1.5 Application data MULTI TYPE AIR-CONDITIONER

- 30 -

'15 • SCM-T-186

RPC012A915B

MULTI TYPE AIR-CONDITIONERR410A REFRIGERANT USED

• Read the “SAFETY PRECAUTIONS” carefully first of all and strictly follow it during the installation work in order to protect yourself.

• The precautionary items mentioned below are distinguished into two levels, and . : Wrong installation would cause serious consequences such as injuries or death. : Wrong installation might cause serious consequences depending on

circumstances. Both mentions the important items to protect your health and safety so strictly follow them by

any means.• Be sure to confirm no anomaly on the equipment by commissioning after completed installation

and explain the operating methods as well as the maintenance methods of this equipment to the user according to the owner’s manual.

• Keep the installation manual together with owner’s manual at a place where any user can read at any time. Moreover if necessary, ask to hand them to a new user.

• For installing qualified personnel, take precautions in respect to themselves by using suitable protective clothing, groves, etc., and then perform the installation works.

• Please pay attention not to fall down the tools, etc. when installing the unit at the high position.• If unusual noise can be heard during operation, consult the dealer.• The meanings of “Marks” used here are shown as follows:

• This installation manual deals with outdoor units and general installation specifications only. For indoor units, refer to page 107.• When install the unit, be sure to check whether the selection of installation place, power source specifications, usage limitation (piping length, height differences between

indoor and outdoor units, power source voltage and etc.) and installation spaces.

SAFETY PRECAUTIONS

WARNING

CAUTIONWARNING

CAUTIONWARNING

CAUTION• Carry out the electrical work for ground lead with care. Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults such as electric shocks due to

short-circuiting.

• Installation must be carried out by the qualified installer.

If you install the system by yourself, it may cause serious trouble such as water leaks, electric shocks, fire and personal injury, as a result of a system malfunction. Do not carry out the installation and maintenance work except the by qualified installer.

• Install the system in full accordance with the installation manual.

Incorrect installation may cause bursts, personal injury, water leaks, electric shocks and fire.

• Be sure to use only for household and residence. If this appliance is installed in inferior environment such as

machine shop and etc., it can cause malfunction. • When installing in small rooms, take prevention

measures not to exceed the density limit of refrigerant in the event of leakage, referred by the formula (accordance with ISO5149).

If the density of refrigerant exceeds the limit, please consult the dealer and install the ventilation system, otherwise lack of oxygen can occur, which can cause serious accident.

• Use the original accessories and the specified components for installation.

If parts other than those prescribed by us are used, It may cause water leaks, electric shocks, fire and personal injury.

• Install the unit in a location with good support. Unsuitable installation locations can cause the unit to fall

and cause material damage and personal injury.• Ensure the unit is stable when installed, so that it can

withstand earthquakes and strong winds. Unsuitable installation locations can cause the unit to fall

and cause material damage and personal injury.• Ventilate the working area well in the event of

refrigerant leakage during installation. If the refrigerant comes into contact with naked flames,

poisonous gas is produced.

• Use the prescribed pipes, flare nuts and tools for R410A.

Using existing parts (for R22 or R407C) can cause the unit failure and serious accidents due to burst of the refrigerant circuit.

• Tighten the flare nut by torque wrench with specified method.

If the flare nut were tightened with excess torque, this may cause burst and refrigerant leakage after a long period.

• Do not open the service valves for liquid line and gas line until completed refrigerant piping work, air tightness test and evacuation.

If the compressor is operated in state of opening service valves before completed connection of refrigerant piping work, air can be sucked into refrigerant circuit, which can cause bust or personal injury due to anomalously high pressure in the refrigerant.

• The electrical installation must be carried out by the qualified electrician in accordance with “the norm for electrical work” and “national wiring regulation”, and the system must be connected to the dedicated circuit.

Power source with insufficient capacity and incorrect function done by improper work can cause electric shocks and fire.

• Be sure to shut off the power before starting electrical work.

Failure to shut off the power can cause electric shocks, unit failure or incorrect function of equipment.

• Be sure to use the cables conformed to safety standard and cable ampacity for power distribution work.

Unconformable cables can cause electric leak, anomalous heat production or fire.

• This appliance must be connected to main power source by means of a circuit breaker or switch (fuse:25A) with a contact separation of at least 3mm.

• Arrange the wiring in the control box so that it cannot be pushed up further into the box. Install the service panel correctly.

Incorrect installation may result in overheating and fire.• Use the prescribed cables for electrical connection,

tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks.

Loose connections or cable mountings can cause anomalous heat production or fire.

• Be sure to fix up the service panels. Incorrect fixing can cause electric shocks or fire due to

intrusion of dust or water.• Be sure to switch off the power source in the event of

installation, inspection or servicing. If the power source is not shut off, there is a risk of electric

shocks, unit failure or personal injury due to the unexpected start of fan.

• Stop the compressor before removing the pipe after shutting the service valve on pump down work.

If the pipe is removed when the compressor is in operation with the service valve open, air would be mixed in the refrigeration circuit and it could cause explosion and injuries due to abnormal high pressure in the cooling cycle.

• Only use prescribed option parts. The installation must be carried out by the qualified installer.

If you install the system by yourself, it can cause serious trouble such as water leaks, electric shocks, fire.

• Be sure to wear protective goggles and gloves while at work.

• Earth leakage breaker must be installed. If the earth leakage breaker is not installed, it can cause

electric shocks.

• Ensure that no air enters in the refrigerant circuit when the unit is installed and removed.

If air enters in the refrigerant circuit, the pressure in the refrigerant circuit becomes too high, which can cause burst and personal injury.

• Do not processing, splice the power cord, or share a socket with other power plugs.

This may cause fire or electric shock due to defecting contact, defecting insulation and over-current etc.

• Do not bundling, winding or processing for the power cord. Or, do not deforming the power plug due to tread it.

This may cause fire or heating.• Do not run the unit with removed panels or

protections. Touching rotating equipments, hot surfaces or high voltage

parts can cause personal injury due to entrapment, burn or electric shocks.

• Do not perform any change of protective device itself or its setup condition.

The forced operation by short-circuiting protective device of pressure switch and temperature controller or the use of non specified component can cause fire or burst.

• Use the circuit breaker of correct capacity. Circuit breaker should be the one that disconnect all poles under over current.

Using the incorrect one could cause the system failure and fire.

• Install isolator or disconnect switch on the power source wiring in accordance with the local codes and regulations.

The isolator should be locked in OFF state in accordance with EN60204-1.

• After maintenance, all wiring, wiring ties and the like, should be returned to their original state and wiring route, and the necessary clearance from all metal parts should be secured.

• Secure a space for installation, inspection and maintenance specified in the manual.

Insufficient space can result in accident such as personal injury due to falling from the installation place.

• Take care when carrying the unit by hand. If the unit weights more than 20kg, it must be carried by two

or more persons. Do not carry by the plastic straps, always use the carry handle when carrying the unit by hand. Use gloves to minimize the risk of cuts by the aluminum fins.

• Dispose of any packing materials correctly. Any remaining packing materials can cause personal injury

as it contains nails and wood. And to avoid danger of suffocation, be sure to keep the plastic wrapper away from children and to dispose after tear it up.

• Be sure to insulate the refrigerant pipes so as not to condense the ambient air moisture on them.

Insufficient insulation can cause condensation, which can lead to moisture damage on the ceiling, floor, furniture and any other valuables.

• When perform the air-conditioner operation (cooling or drying operation) in which ventilator is installed in the room. In this case, using the air-conditioner in parallel with the ventilator, there is the possibility that drain water may backflow in accordance with the room lapse into the negative pressure status. Therefore, set up the opening port such as incorporate the air into the room that may appropriate to ventilation (For example; Open the door a little). In addition, just as above, so set up the opening port if the room lapse into negative pressure status due to register of the wind for the high rise apartment etc.

• Do not install the unit in the locations listed below. • Locations where carbon fiber, metal powder or any

powder is floating. • Locations where any substances that can affect the unit

such as sulphide gas, chloride gas, acid and alkaline can occur.

• Vehicles and ships. • Locations where cosmetic or special sprays are often

used. • Locations with direct exposure of oil mist and steam such

as kitchen and machine plant.

• Locations where any machines which generate high frequency harmonics are used.

• Locations with salty atmospheres such as coastlines. • Locations with heavy snow (If installed, be sure to provide

base flame and snow hood mentioned in the manual). • Locations where the unit is exposed to chimney smoke. • Locations at high altitude (more than 1000m high).

• Locations with ammonic atmospheres (e.g. organic fertilizer).• Locations with calcium chloride (e.g. snow melting agent).

• Locations where heat radiation from other heat source can affect the unit.

• Locations without good air circulation. • Locations with any obstacles which can prevent inlet and

outlet air of the unit. • Locations where short circuit of air can occur (in case of

multiple units installation). • Locations where strong air blows against the air outlet of

outdoor unit. • Locations where something located above the unit could

fall. It can cause remarkable decrease in performance, corrosion

and damage of components, malfunction and fire.

Never do it under any circumstances.

Always do it according to the instruction.

1.5 Application data (1) Models SCM40ZM-S, 45ZM-S

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'15 • SCM-T-186

Accessories for outdoor unit

• Model name and power source• Refrigerant piping length• Piping, wiring and miscellaneous small parts• Indoor unit installation manual

Necessary tools for the installation workWrench key (Hexagon) [4m/m]Vacuum pumpVacuum pump adapter (Anti-reverse flow type)(Designed specifically for R410A)Gauge manifold (Designed specifically for R410A)Charge hose (Designed specifically for R410A)Flaring tool set (Designed specifically for R410A)Gas leak detector (Designed specifically for R410A)Gauge for projection adjustment (Used when flare is made by using conventional flare tool)

910

11

12131415

16

Plus headed driverKnifeSawTape measureHammerSpanner wrenchTorque wrench [14.0~62.0N·m (1.4~6.2kgf·m)]Hole core drill (65mm in diameter)

12345678

Grommet (Heat pump type only)Drain elbow (Heat pump type only)

Q’ty

11

Option parts

Sealing plateSleeveInclination platePuttyDrain hose (extension hose)Piping cover (for insulation of connection piping)

Q’ty

1111

1

1

Check before installation work

abcd

e

f12

② Notabilia for installation

Fasten with bolts (M10-12)

Use a thicker block to anchor deeper.Use a long block toextend the width.

① Anchor bolt fixed position

Installation

50Intake

136.9203.1 510Outlet

65850

12 13.5

312.

5

290

340

14

●

●

●

●

●

① Installation Space (on a flat surface)

◎Blowing out port and suction port on the back sideof the unit can be installed at a distance of 10cmfrom walls.

In case the barrier is 1.2m or above in height,or is overhead, the sufficient space betweenthe unit and wall shall be secured.

When the unit is installed, the space of the following dimension and above shall be secured.

○

In installing the unit, fix the unit’s legs with bolts specified on the above.The protrusion of an anchor bolt on the front side must be kept within 15 mm.Securely install the unit so that it does not fall over during earthquakes or strong winds, etc.Refer to the above illustrations for information regarding concrete foundations.Install the unit in a level area. (With a gradient of 5 mm or less.)Improper installation can result in a compressor failure, broken piping within the unit and abnormal noise generation.

No obstacles(Service space for electrical parts)

10cm MIN

60cm MIN

Airintake

Air outlet

Air intake10cmMIN

CAUTION• Do not install the outdoor unit in the locations listed

below. • Locations where discharged hot air or operating sound of

the outdoor unit can bother neighborhood. • Locations where outlet air of the outdoor unit blows

directly to plants. The outlet air can affect adversely to the plant etc.

• Locations where vibration can be amplified and transmitted due to insufficient strength of structure.

• Locations where vibration and operation sound generated by the outdoor unit can affect seriously (on the wall or at the place near bed room).

• Locations where an equipment affected by high harmonics is placed (TV set or radio receiver is placed within 1m).

• Locations where drainage cannot run off safely. It can affect surrounding environment and cause a claim.• Do not install the unit near the location where leakage

of combustible gases can occur. If leaked gases accumulate around the unit, it can cause fire.• Do not install the unit where corrosive gas (such as

sulfurous acid gas etc.) or combustible gas (such as thinner and petroleum gases) can accumulate or collect, or where volatile combustible substances are

handled. Corrosive gas can cause corrosion of heat exchanger,

breakage of plastic parts and etc. And combustible gas can cause fire.

• Do not install nor use the system close to the equipment that generates electromagnetic fields or high frequency harmonics.

Equipment such as inverters, standby generators, medical high frequency equipments and telecommunication equipments can affect the system, and cause malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.

• Do not install the outdoor unit in a location where insects and small animals can inhabit.

Insects and small animals can enter the electric parts and cause damage or fire. Instruct the user to keep the surroundings clean.

• Do not use the base flame for outdoor unit which is corroded or damaged due to long periods of operation.

Using an old and damage base flame can cause the unit falling down and cause personal injury.

• Do not use any materials other than a fuse with the correct rating in the location where fuses are to be used.

Connecting the circuit with copper wire or other metal thread can cause unit failure and fire.

• Do not touch any buttons with wet hands. It can cause electric shocks.• Do not touch any refrigerant pipes with your hands

when the system is in operation. During operation the refrigerant pipes become extremely hot

or extremely cold depending the operating condition, and it can cause burn injury or frost injury.

• Do not touch the suction or aluminum fin on the outdoor unit.

This may cause injury.• Do not put anything on the outdoor unit and operating

unit. This may cause damage the objects or injury due to falling

to the object.• Do not use the unit for special purposes such as

storing foods, cooling precision instruments and preservation of animals, plants or art.

• Do not clean up the unit with water.

Be careful of the following conditions and choose an installation place.● Where air is not trapped.● Where the installation fittings can be firmly installed.● Where wind does not hinder the intake and outlet pipes.● Out of the heat range of other heat sources.● A place where stringent regulation of electric noises is not applicable.● Where it is safe for the drain water to be discharged.● Where noise and hot air will not bother neighboring residents.● Where snow will not accumulate.● Where strong winds will not blow against the outlet pipe.● A place where no TV set or radio receiver is placed within 1m. (If electrical interference is caused, seek a place less likely to cause the problem)● If a operation is conducted when the outdoor air temperature is –5℃ lower, the outdoor

unit should be installed at a place where it is not influenced by natural wind.● Where it is likely that the unit is subjected to strong winds, provide wind guards

according to the following guidelines. Strong winds can cause performance degradation, an accidental stop due to a rise of high pressure and a broken fan.

Do not install the unit in places which exposed to sea breeze (e.g. coastal area) or calcium chloride (e.g. snow melting agent), exposed to ammonia substance (e.g. organic fertilizer).

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'15 • SCM-T-186

Drainage

View of Terminal block

outdoor unit

unit A

unit A

indoor unit

L N

Circuitbreaker

Earthleakagebreaker

CONNECTION OF REFRIGERANT PIPINGS3

●

●

●

Copper pipe diameter Clutch typr flare tool for

R410AConventional (R22) flare tool

Clutch type Wing nut type

Measurement B (mm)

6.35 0.0～0.5 1.0～1.5 1.5～2.0

9.52 0.0～0.5 1.0～1.5 1.5～2.0

[Connection of pipes]NOTE

Cover the pipes with tape so that dust and sand do not enter the pipe until they are

When connecting the pipes to the outdoor unit, be careful about the discharge of fluorocarbon

Make sure to match the pipes between the indoor unit and the outdoor unit with the

connected.

gas or oil.

correct service valves.

Outdoor

Press

Remove

A

90±

0.5°

Dimension A

Liquid side 9.1dia.Gas side

9.52 : 13.2dia.

○Remove the flared nuts. (on both liquid and gas sides)

○Install the removed flared nuts to the pipes to be connected, then flare the pipes.

Do not apply excess torque to the flared nuts.Otherwise, the flared nuts may crack dependingon the conditions and refrigerant leak may occur.

CAUTIONDo not apply refrigerating machine oil to the flared surface.

CAUTION

Measurement B

Flaringblock Copper pipe

OutdoorConnection

Liquid sideGas side Ensure that there are no gas leaks from the pipe

joints by using a leak detector or soap water.

Gas Leakage Test

●

○Connect the pipes on both liquid and gas sides.○Tighten the nuts to the following torque. Liquid side : 14.0～18.0N・m (1.4～1.8kgf・m) Gas side ( 9.52): 34.0～42.0N･m (3.4～4.2kgf･m)

piping length

hight difference

length of chargelessrefrigerant pipe

one indoor unit MAX 25mall indoor unit MAX 30m

30m

MAX25m

MAX 15m

MAX 15m

outdoorunit

indoorunit

indoorunit

indoorunit

[Limit]

Connection of the power source cable and the connecting cables for indoor and outdoor units.

This multi-type room air-conditioner receives its power from outside.To ensure correct connections, mark each ends of the cables with number, A and B.It is important to use the same number the corresponding cables and pipes.An earth leakage breaker and a circuit breaker must be installed.Their capacities are 25A.

①Remove the service panel. (Remove the screw of the service panel.)Remove the terminal cover. (Remove the screw of the terminal cover.)②③

⑤④

Connect the power source cable and the connection wire securely to the terminal block.

〔POWER SOURCE CODE〕 CENELEC code for cables requiring fields cables. H05RNR3G4.0〔INTERCONNECTING WIRING CODE〕 CENELEC code for cables requiring fields cables. H05RNR4G1.5

1) In wiring, make sure that the wire terminal numbers of outdoor unit terminal block are match to the wire terminal numbers of indoor unit terminal block.2) Terminal number A of the outdoor unit is used for A indoor unit and terminal

number B for B indoor unit respectively.

After connecting the wire, use wiring clamps to secure the wiring.Fit the terminal cover and the service panel.

●

●●

unit A unit BPOWERSUPPLY

Use a flare tool designed for R410A or a conventional flare tool. Please note that measurement B (protrusion from the flaring block) will vary depending on the type of a flare tool in use.If a conventional flare tool is used, please use copper pipe gauge or a similar instrument to check protrusion so that you can keep measurement B to a correct value.

Drain hole

Terminal cover

Service panel

The screw of the service panel is tightened securely.

Screw

1 2 3

1 2 3

unit B

unit B

1 2 3

1 2 3

Main fuse specification

250V 15A

Specification Part No.

SSA564A136

● Circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country.● The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop

is 2%. For an installation falling outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.

● Execute drain piping by using a drain elbow and drain grommets, where water drained from the outdoor unit is a problem.

● There are 2 drain holes provided on the bottom plate of an outdoor unit to discharge condensed water.

● When condensed water needs to be led to a drain, etc., install the unit on a flat base (supplied separately as an option part) or concrete blocks.

● Where you are likely to have several days of sub-zero temperatures in a row, do not use a drain elbow and drain grommets. (There is a risk of drain water freezing inside and blocking the drain.)

- 33 -

'15 • SCM-T-186

4 AIR PURGING NOTE : Fully open the service valves (on both liquid and gas sides) after completing air purging.

● Since the system uses service ports differing in diameter from those foundon the conventional models, a charge hose (for R22) presently in use is notapplicable. Please use one designed specifically for R410A.

● Please use an anti-reverse flow type vacuum pump adapter so as to preventvacuum pump oil from running back into the system. Oil running back intoan air-conditioning system may cause the refrigerant cycle to break down.

● Remove the cap on both gas and liquid sides before starting operation.● After completing the operation, do not forget to tighten the cap (gas may leak).

● Conduct air purging for all connected indoor units.

Procedure

(1) Secure all flare nuts on both indoor and outdoor sides to prevent leaks from the pipes.

(2) Connect the service valves, charge hose, manifoldvalve and vacuum pump as shown in the right figure.

(3) Fully open the handle Lo for the manifold valve, andpump a vacuum for 15 minutes. Ensure that the meteris indicating -0.1MPa (-76cmHg).

(4) After vacuuming, fully open the service valve (both liquid and gas sides) with a hexagon wrench.

(5) Remove the charge hose from service port.(6) Repeat the above steps (1) ~ (5) for all connected indoor units.(7) Ensure that there are no gas leaks from the joints in the indoor and outdoor units.

Open Open

Heat insulation for jointsVinyltape Position so

the slit comes on top.

Cover the joint with insulation material for the indoor unit and tape it.

Pipe clamp

Pipes

Crossover wires

Exterior tape

Drain hoseTapping screw

Apply exterior tape andshape along the placewhere the pipes will berouted. Secure to the wallwith a pipe clamp. Becareful not to damage thepipes and the wires.

7 BEWARE OF WRONG CONNECTIONS INREFRIGERANT PIPING AND WIRING

● Make sure to match the piping and wiring from each unit to the

● Be careful because if connections are wrong, normal operationcannot be achieved and may damage the compressor.

outdoor unit.

[Correct connections] [Example of wrong connections]Piping

Wiring

Indoor unit Indoor unit

EARTHING WORK○ Earth work shall be carried out without fail in order to prevent electric

shock and noise generation.○ The connection of the earth cable to the following substances causes

dangerous failures, therefore it shall never be done. (City water pipe,Town gas pipe, TV antenna, lightning conductor, telephoneline, etc.)

Check the following points again after completion of the installation, and beforeturning on the power.Conduct a test run again and ensure that the unit operates properly.At the same time, explain to the customer how to use the unit and how to takecare of the unit following the installation manual.If the compressor does not operate after the operation has started, wait for 5-10minutes. (This may be due to delayed start.)(Three-minutes restart preventive timer)When the air-conditioner is restarted or when changing the operation, the unit willnot start operating for approximately 3minutes. This is to protect the unit and it isnot a malfunction.

After installation

Test run

□ The power source voltage is correct as the rating.□ No gas leaks from the joints of the service valve.□ Power cables and crossover wires are securely fixed to the terminal board.□ Each indoor and outdoor unit is properly connected (no wrong wiring or piping). □ Service valve is fully open.□ Refrigerant has been additionally charged (when the total pipe length exceeds

the refrigerant charged pipe length).□ The pipe joints for indoor and outdoor pipes have been insulated.□ Earthing work has been conducted properly.

□ Air-conditioning and heating are normal.□ No abnormal noise.□ Water drains smoothly.□ Protective functions are not working.□ Operation of the unit has been explained to the customer.□ The remote control is normal.

□ The screw of the service panel is tightened securely.

Operation of indicator lampsINDICATION LAMP

LED E (1)

1 TIME FLASH

2 TIME FLASH

3 TIME FLASH

4 TIME FLASH

5 TIME FLASH

6 TIME FLASH

7 TIME FLASH

8 TIME FLASH

LIGHT ON

COLOR

RED

SELF DIAGNOSIS FUNCTION BY LED E

FUNCTION

WARNING LAMP

CURRENT CUT

TROUBLE OF OUTDOOR UNIT

OVER CURRENTTRANSMISSION ERROR IN OUTDOOR UNIT PCB

OVER HEAT OF COMPRESSOR

ERROR OF SIGNAL TRANSMISSION

LOCK OF COMPRESSOR

SENSOR ERROR

OUTDOOR FAN MOTOR ERROR

DISCHARGE PIPE SENSOR COMING OFF

Installation test check points

tightening torque (N·m)Service valve cap

tightening torque (N·m)Check joint blind nut

φ6.35 (1/4")

φ9.52 (3/8")20 30 10 12

Service valve size (mm)

Securely tighten the service valve cap and the check joint blind nut after adjustment.

(Gas side)

Charge hose(Designed specifically for R410A)

Compound pressure gaugePressure gauge

Gauge Manifold(Designed specifically for R410A)

Handle Hi.

Vacuum pump

Vacuum pump adapter(Anti-reverse flow type)(Designed specifically for R410A)


Check joint

-0.1MPa(-76cmHg)

Handle Lo

Service valve

Service valve

(Liquid side)

Service valveCap

Service valveCap

Service valve for room B

Service valve for room A

HEAT INSULATION FOR JOINTS5 TEST RUN AND HANDLING INSTRUCTIONS6

Finish and fixing

4 SEC LIGHTAND

4 SEC OFF

unit B

unit A

Outdoor

unit

B

A

unit B

unit A

Outdoor

unit

B

A

- 34 -

'15 • SCM-T-186

(2) Models SCM50ZM-S, 60ZM-S RPC012A916D












SAFETY PRECAUTIONS

WARNING

CAUTIONWARNING

CAUTIONWARNING


short-circuiting.








































• Only use prescribed option parts. The installation must be carried out by the qualified installer.




electric shocks.













• Install isolator or disconnect switch on the power source wiring in accordance with the local codes and regulations.































- 35 -

'15 • SCM-T-186




910

11

12131415

16


12345678

Grommet (Heat pump type only)Drain elbow (Heat pump type only)Variable diameter joint φ9.52⇒φ12.7

SCM50SCM60

Note: Provide flare nuts when using the variable diameter joint (for φ12.7).

Q’ty

1112

Option parts


Q’ty

1111

1

1


abcd

e

f

12

3





Installation

50Intake

136.9203.1 510Outlet

65850

12 13.5

312.

5

290

340

14

● This model requires a minimum of 2 indoor units.

●

●

●

●

●





○



10cm MIN

60cm MIN

Airintake

Air outlet

Air intake10cmMIN


































- 36 -

'15 • SCM-T-186

Drainage



This multi-type room air-conditioner receives its power from outside.To ensure correct connections, mark each ends of the cables with number, A to C. Itis important to use the same number the corresponding cables and pipes.An earth leakage breaker and a circuit breaker must be installed.Their capacities are 25A.


⑤④






outdoor unit

1 2 31 2 3 1 2 3

unit A unit B unit C

unit A unit B

indoor unitunit C

L N

Circuitbreaker

Earthleakagebreaker

Regarding the change in the sizes of gas side pipes (usage of the variable joints);If a 5.0, 6.0 kw class indoor unit (gas side pipe 12.7) is going to be connected to theservice valves (9.52), variable joints available as accessories must be applied to thegas side service valves.

[Examples of use of variable diameter joints]

Connection of indoor unit of Class 5.0 to A unit.●

●

●

●●

●

●

●

●

Servicevalve for room A

Liquid side service valve ( 6.35)6.35 pipe 5.0 kw

Indoor unit

Gas side operationvalve ( 9.52) Copper packing Variable diameter joint

( 9.52 - 12.7)

12.7 pipe




Measurement B (mm)

6.35 0.0～0.5 1.0～1.5 1.5～2.09.52 0.0～0.5 1.0～1.5 1.5～2.012.7 0.0～0.5 1.0～1.5 2.0～2.5

Securely fit the copper packing between the service valve and the variablediameter joint to prevent shifting.





connected.

gas or oil.


Outdoor

Press

Remove

A

90±

0.5°

Dimension A


9.52 : 13.2dia.12.7 : 16.6dia.





CAUTION

Measurement B


unit A unit B unit CPOWERSUPPLY


Drain hole

Terminal cover

Service panel


Screw

1 2 3 1 2 3 1 2 3


250V 15A


SSA564A136

250V 20A

SCM50

SCM60 SSA564A136A







OutdoorConnection

Liquid sideGas side Ensure that there are no gas leaks from the pipe

joints by using a leak detector or soap water.

Gas Leakage Test

●

○Connect the pipes on both liquid and gas sides.○Tighten the nuts to the following torque. Liquid side : 14.0～18.0N・m (1.4～1.8kgf・m) Gas side ( 9.52): 34.0～42.0N･m (3.4～4.2kgf･m) ( 12.7): 49.0～61.0N･m (4.9～6.1kgf･m)

piping length

hight difference



40m

MAX25m

MAX 15m

MAX 15m

outdoorunit

indoorunit

indoorunit

indoorunit

[Limit]

- 37 -

'15 • SCM-T-186






Procedure






Open Open




Pipe clamp

Pipes

Crossover wires

Exterior tape






outdoor unit.

[Correct connections] [Example of wrong connections]

Piping

Wiring

Indoor unit Indoor unit

unit C

unit B

unit A

Outdoor unit

C

AB





After installation

Test run





LED E (1)

1 TIME FLASH

2 TIME FLASH

3 TIME FLASH

4 TIME FLASH

5 TIME FLASH

6 TIME FLASH

7 TIME FLASH

8 TIME FLASH

LIGHT ON

COLOR

RED


FUNCTION

WARNING LAMP

CURRENT CUT





LOCK OF COMPRESSOR

SENSOR ERROR




unit C

unit B

unit A

Outdoor unit

C

AB



φ6.35 (1/4")

φ12.7 (1/2")

φ9.52 (3/8")20 30

25 35

10 12

Service valve size

(mm)


(Gas side)




Handle Hi.

Vacuum pump



Check joint

-0.1MPa(-76cmHg)

Handle Lo

Servie valve

Service valve

(Liquid side)

Service valveCap

Service valveCap

Service valve for room C

Service valve for room B

Service valve for room A

Finish and fixing

TEST RUN AND HANDLING INSTRUCTIONS6HEAT INSULATION FOR JOINTS5


4 SEC LIGHTAND

4 SEC OFF

- 38 -

'15 • SCM-T-186

RPC012A913C












SAFETY PRECAUTIONS

WARNING

CAUTIONWARNING

CAUTIONWARNING


short-circuiting.








































• Only use prescribed optional parts. The installation must be carried out by the qualified installer.




electric shocks.













• Install isolator or disconnect switch on the power supply wiring in accordance with the local codes and regulations.































(3) Models SCM71ZM-S, 80ZM-S

- 39 -

'15 • SCM-T-186




910

11

12131415

16


12345678

Grommet (Heat pump type only)Drain elbow (Heat pump type only)Variable diameter joint φ9.52⇒φ12.7

Note: Provide flare nuts when using the variable diameter joint (for φ12.7).

Q’ty

212

Option parts


Q’ty

1111

1

1


abcd

e

f

123





Installation

60Intake

150150 580Outlet

72.9880

15 1938

0

340

418

19

● This model requires a minimum of 2 indoor units.

●

●

●

●

●





○



10cm MIN

60cm MIN

Airintake

Air outlet

Air intake10cmMIN


































- 40 -

'15 • SCM-T-186

Drainage


This multi-type room air-conditioner receives its power from outside.To ensure correct connections, mark each ends of the cables with number, A to D. Itis important to use the same number the corresponding cables and pipes.An earth leakage breaker and a circuit breaker must be installed.Their capacities are 25A.

①Remove the service panel. (Remove the 2 sets screws of the service panel.)Remove the terminal cover. (Remove the 2 sets screws of the terminal cover.)②③

⑤④






L N

Circuitbreaker

Earthleakagebreaker

●

●●

outdoor unit

1 2 31 2 3 1 2 3 1 2 3

1 2 31 2 3 1 2 3


unit A unit B

indoor unitunit C

1 2 3

unit D

unit D


drain hole

Terminal cover

Service panel


Screwunit A unit B

unit C unit D

POWERSUPPLY

CONNECTION OF REFRIGERANT PIPINGS3

Regarding the change in the sizes of gas side pipes (usage of the variable joints);If a 5.0, 6.0 kw class indoor unit (gas side pipe 12.7) is going to be connected to theservice valves (9.52), variable joints available as accessories must be applied to thegas side service valves.

[Examples of use of variable diameter joints]

Connection of indoor unit of Class 5.0 to A unit.●

●

●

●

●

●


Liquid side operation valve ( 6.35)6.35 pipe 5.0 kw

Indoor unit


( 9.52 - 12.7)

12.7 pipe




Measurement B (mm)

6.35 0.0～0.5 1.0～1.5 1.5～2.09.52 0.0～0.5 1.0～1.5 1.5～2.012.7 0.0～0.5 1.0～1.5 2.0～2.5

Securely fit the copper packing between the service valve and the variablediameter joint to prevent shifting.





connected.

gas or oil.


Outdoor

Press

Remove

A

90±

0.5°

Dimension A


9.52 : 13.2dia.12.7 : 16.6dia.





CAUTION

Measurement B


hight difference

[Limit]


OutdoorConnection

Liquid sideGas side

Ensure that there are no gas leaks from the pipe joints by using a leak detector or soap water.

Gas Leakage Test

●

○Connect the pipes on both liquid and gas sides.○Tighten the nuts to the following torque. Liquid side : 14.0～18.0N･m(1.4～1.8kgf･m) Gas side ( 9.52): 34.0～42.0N･m (3.4～4.2kgf･m) ( 12.7): 49.0～61.0N･m (4.9～6.1kgf･m)

When the total refrigerant pipe lenght for all the rooms exceeds the lenght of the uncharged pipe (40m), additional refrigerant is required.(If 40m or less, additional charge is not required.)Additional charge amount per meter = 20g/m

● piping length



40m

MAX25m

MAX 20m

MAX 20m

outdoorunit

indoorunit

indoorunit

indoorunit

indoorunit


250V 20A


SSA564A136A







- 41 -

'15 • SCM-T-186




Pipe clamp

Pipes

Crossover wires

Exterior tape







LED E (1)

1 TIME FLASH

2 TIME FLASH

3 TIME FLASH

4 TIME FLASH

5 TIME FLASH

6 TIME FLASH

7 TIME FLASH

8 TIME FLASH

LIGHT ON

COLOR

RED


FUNCTION

WARNING LAMP

CURRENT CUT





LOCK OF COMPRESSOR

SENSOR ERROR



Finish and fixing







Procedure






Open Opentightening torque (N·m)

Service valve captightening torque (N·m)Check joint blind nut

φ6.35 (1/4")

φ12.7 (1/2")

φ9.52 (3/8")20～30

25～35

10～12

Service valve size

(mm)


(Gas side)




Handle Hi.

Vacuum pump



Check joint

-0.1MPa(-76cmHg)

Handle Lo

Service valve

Service valve

(Liquid side)

Service valveCap

Service valveCap

Service valve for room DService valve for room CService valve for room BService valve for room A




outdoor unit.


Piping

Wiring

Indoor unit

Indoor unit

D unit

C unit

B unit

A unit

Outdoor unit

D unit

C unit

B unit

A unit

Outdoor unit

DC

AB

DC

AB


After installation

Test run






4 SEC LIGHTAND

4 SEC OFF

- 42 -

'15 • SCM-T-186

(4) Models SCM100ZM-S, 125ZM-S

• Read the “SAFETY PRECAUTIONS” carefully first of all and strictly follow it during the installationwork in order to protect yourself.

• The precautionary items mentioned below are distinguished into two levels, and.: Wrong installation would cause serious consequences such as injuries or death.: Wrong installation might cause serious consequences depending oncircumstances.

Both mentions the important items to protect your health and safety so strictly follow them byany means.

• Be sure to confirm no anomaly on the equipment by commissioning after completed installationand explain the operating methods as well as the maintenance methods of this equipment tothe user according to the owner’s manual.

• Keep the installation manual together with owner’s manual at a place where any user can readat any time. Moreover if necessary, ask to hand them to a new user.

• For installing qualified personnel, take precautions in respect to themselves by using suitableprotective clothing, groves, etc., and then perform the installation works.


RPC012A918B

MULTI TYPE AIR-CONDITIONER



SAFETY PRECAUTIONS

WARNING

CAUTIONWARNING

CAUTIONWARNING

CAUTION• Carry out the electrical work for ground lead with care.

Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults such as electric shocks due toshort-circuiting.

• Installation must be carried out by the qualifiedinstaller.If you install the system by yourself, it may cause serioustrouble such as water leaks, electric shocks, fire andpersonal injury, as a result of a system malfunction. Do notcarry out the installation and maintenance work except theby qualified installer.

• Install the system in full accordance with theinstallation manual.Incorrect installation may cause bursts, personal injury,water leaks, electric shocks and fire.

• Be sure to use only for household and residence.If this appliance is installed in inferior environment such asmachine shop and etc., it can cause malfunction.

• When installing in small rooms, take preventionmeasures not to exceed the density limit of refrigerantin the event of leakage, referred by the formula(accordance with ISO5149).If the density of refrigerant exceeds the limit, please consultthe dealer and install the ventilation system, otherwise lackof oxygen can occur, which can cause serious accident.

• Use the original accessories and the specifiedcomponents for installation.If parts other than those prescribed by us are used, It maycause water leaks, electric shocks, fire and personal injury.

• Install the unit in a location with good support.Unsuitable installation locations can cause the unit to falland cause material damage and personal injury.

• Ensure the unit is stable when installed, so that it canwithstand earthquakes and strong winds.Unsuitable installation locations can cause the unit to falland cause material damage and personal injury.

• Ventilate the working area well in the event ofrefrigerant leakage during installation.If the refrigerant comes into contact with naked flames,poisonous gas is produced.

• Use the prescribed pipes, flare nuts and tools forR410A.Using existing parts (for R22 or R407C) can cause the unitfailure and serious accidents due to burst of the refrigerantcircuit.

• Tighten the flare nut by torque wrench with specifiedmethod.If the flare nut were tightened with excess torque, this maycause burst and refrigerant leakage after a long period.

• Do not open the service valves for liquid line and gasline until completed refrigerant piping work, airtightness test and evacuation.If the compressor is operated in state of opening servicevalves before completed connection of refrigerant pipingwork, air can be sucked into refrigerant circuit, which cancause bust or personal injury due to anomalously highpressure in the refrigerant.

• The electrical installation must be carried out by thequalified electrician in accordance with “the norm forelectrical work” and “national wiring regulation”, andthe system must be connected to the dedicatedcircuit.Power source with insufficient capacity and incorrectfunction done by improper work can cause electric shocksand fire.

• Be sure to shut off the power before starting electricalwork.Failure to shut off the power can cause electric shocks, unitfailure or incorrect function of equipment.

• Be sure to use the cables conformed to safetystandard and cable ampacity for power distributionwork.Unconformable cables can cause electric leak, anomalousheat production or fire.

• This appliance must be connected to main powersource by means of a circuit breaker or switch(fuse:30A) with a contact separation of at least 3mm.

• Arrange the wiring in the control box so that it cannotbe pushed up further into the box. Install the servicepanel correctly.Incorrect installation may result in overheating and fire.

• Use the prescribed cables for electrical connection,tighten the cables securely in terminal block andrelieve the cables correctly to prevent overloading theterminal blocks.Loose connections or cable mountings can causeanomalous heat production or fire.

• Be sure to fix up the service panels.Incorrect fixing can cause electric shocks or fire due tointrusion of dust or water.

• Be sure to switch off the power source in the event ofinstallation, inspection or servicing.If the power source is not shut off, there is a risk of electricshocks, unit failure or personal injury due to the unexpectedstart of fan.

• Stop the compressor before removing the pipe aftershutting the service valve on pump down work.If the pipe is removed when the compressor is in operationwith the service valve open, air would be mixed in therefrigeration circuit and it could cause explosion and injuriesdue to abnormal high pressure in the cooling cycle.

• Only use prescribed option parts. The installationmust be carried out by the qualified installer.If you install the system by yourself, it can cause serioustrouble such as water leaks, electric shocks, fire.

• Be sure to wear protective goggles and gloves whileat work.

• Earth leakage breaker must be installed.If the earth leakage breaker is not installed, it can causeelectric shocks.

• Ensure that no air enters in the refrigerant circuitwhen the unit is installed and removed.If air enters in the refrigerant circuit, the pressure in therefrigerant circuit becomes too high, which can cause burstand personal injury.

• Do not processing, splice the power cord, or share asocket with other power plugs.This may cause fire or electric shock due to defectingcontact, defecting insulation and over-current etc.

• Do not bundling, winding or processing for the powercord. Or, do not deforming the power plug due totread it.This may cause fire or heating.

• Do not run the unit with removed panels orprotections.Touching rotating equipments, hot surfaces or high voltageparts can cause personal injury due to entrapment, burn orelectric shocks.

• Do not perform any change of protective device itselfor its setup condition.The forced operation by short-circuiting protective device ofpressure switch and temperature controller or the use ofnon specified component can cause fire or burst.

• Use the circuit breaker of correct capacity. Circuitbreaker should be the one that disconnect all polesunder over current.Using the incorrect one could cause the system failure andfire.

• Install isolator or disconnect switch on the powersource wiring in accordance with the local codes andregulations.The isolator should be locked in OFF state in accordancewith EN60204-1.

• After maintenance, all wiring, wiring ties and the like,should be returned to their original state and wiringroute, and the necessary clearance from all metalparts should be secured.

• Secure a space for installation, inspection andmaintenance specified in the manual.

Insufficient space can result in accident such as personalinjury due to falling from the installation place.

• Take care when carrying the unit by hand.If the unit weights more than 20kg, it must be carried by twoor more persons. Do not carry by the plastic straps, alwaysuse the carry handle when carrying the unit by hand. Usegloves to minimize the risk of cuts by the aluminum fins.

• Dispose of any packing materials correctly.Any remaining packing materials can cause personal injuryas it contains nails and wood. And to avoid danger ofsuffocation, be sure to keep the plastic wrapper away fromchildren and to dispose after tear it up.

• Be sure to insulate the refrigerant pipes so as not tocondense the ambient air moisture on them.Insufficient insulation can cause condensation, which canlead to moisture damage on the ceiling, floor, furniture andany other valuables.

• When perform the air-conditioner operation (coolingor drying operation) in which ventilator is installed inthe room. In this case, using the air-conditioner inparallel with the ventilator, there is the possibility thatdrain water may backflow in accordance with theroom lapse into the negative pressure status.Therefore, set up the opening port such asincorporate the air into the room that may appropriateto ventilation (For example; Open the door a little). Inaddition, just as above, so set up the opening port ifthe room lapse into negative pressure status due toregister of the wind for the high rise apartment etc.

• Do not install the unit in the locations listed below.• Locations where carbon fiber, metal powder or any

powder is floating.• Locations where any substances that can affect the unit

such as sulphide gas, chloride gas, acid and alkaline canoccur.

• Vehicles and ships.• Locations where cosmetic or special sprays are often

used.• Locations with direct exposure of oil mist and steam such


• Locations where any machines which generate highfrequency harmonics are used.

• Locations with salty atmospheres such as coastlines.• Locations with heavy snow (If installed, be sure to provide

base flame and snow hood mentioned in the manual).• Locations where the unit is exposed to chimney smoke.• Locations at high altitude (more than 1000m high).• Locations with ammonic atmospheres (e.g. organic fertilizer).• Locations with calcium chloride (e.g. snow melting agent).• Locations where heat radiation from other heat source can

affect the unit.

• Locations without good air circulation.• Locations with any obstacles which can prevent inlet and

outlet air of the unit.• Locations where short circuit of air can occur (in case of

multiple units installation).• Locations where strong air blows against the air outlet of

outdoor unit.• Locations where something located above the unit could

fall.It can cause remarkable decrease in performance, corrosionand damage of components, malfunction and fire.

R410A REFRIGERANT USED

Never do it under anycircumstances.

Always do it according to theinstruction.

- 43 -

'15 • SCM-T-186



Necessary tools for the installation workWrench key (Hexagon) [4m/m]Vacuum pumpVacuum pump adapter (Anti-reverse flow type)(Designed specifically for R410A)Gauge manifold (Designed specifically for R410A)Charge hose (Designed specifically for R410A)Flaring tool set (Designed specifically for R410A)Gas leak detector (Designed specifically for R410A)Gauge for projection adjustment (Used when flare ismade by using conventional flare tool)

910

11

12131415

16


12345678

Grommet (Heat pump type only)Drain elbow (Heat pump type only)Variable diameter jointφ9.52⇒φ12.7Variable diameter jointφ9.52⇒φ15.88

Note: Provide flare nuts when using the variablediameter joint (for φ12.7,φ15.88).

Q’ty

2132

Option parts

Sealing plateSleeveInclination platePuttyDrain hose (extensionhose)Piping cover (for insulationof connection piping)

Q’ty

1111

1

1


abcd

e

f

1234


Fasten withbolts (M10-12)

Use a thicker block toanchor deeper.

Use a long block toextend the width.


Installation

76Intake

190 200580

Outlet

73970

15 2041

0

370

450

20

SELECTION OF INSTALLATION LOCATION1

Install at location that meets the following conditions after getting approval from the customer.

• This model requires normally a minimum of 4 indoor units.• This model requires a minimum of 3 indoor units in case of SRK71ZR-S, SRK-ZMX-S, FDEN type combination only.• This model requires a minimum of 2 indoor units in case of SRK71ZR-S type only.

CAUTION

① Installation Space (on a flat surface)Be careful of the following conditions and choose an installationplace.● Where air is not trapped.● Where the installation fittings can be firmly installed.● Where wind does not hinder the intake and outlet pipes.● Out of the heat range of other heat sources.● A place where stringent regulation of electric noises is not

applicable.● Where it is safe for the drain water to be discharged.● Where noise and hot air will not bother neighboring residents.● Where snow will not accumulate.● Where strong winds will not blow against the outlet pipe.● A place where no TV set or radio receiver is placed within 1m.

(If electrical interference is caused, seek a place less likely tocause the problem)

● If a operation is conducted when the outdoor air temperature is–5℃ lower, the outdoor unit should be installed at a placewhere it is not influenced by natural wind.

● Where it is likely that the unit is subjected to strong winds,provide wind guards according to the following guidelines.Strong winds can cause performance degradation, an accidentalstop due to a rise of high pressure and a broken fan.

Do not install the unit in places which exposed to sea breeze(e.g. coastal area) or calcium chloride (e.g. snow melting agent),exposed to ammonia substance (e.g. organic fertilizer).

● Walls surrounding the unit in the four sides are not acceptable.● There must be a 1-meter or large space in the above.● Where a danger of short-circuiting exists, install guide louvers.● When more than one unit are installed, provide sufficient intake space

consciously so that short-circuiting may not occur.● When piling snow can bury the outdoor unit, provide proper snow guards.

● In installing the unit, fix the unit’s legs with bolts specified on theright.

● The protrusion of an anchor bolt on the front side must be keptwithin 15 mm.

● Securely install the unit so that it does not fall over duringearthquakes or strong winds, etc.

● Refer to the right illustrations for information regarding concretefoundations.

● Install the unit in a level area. (With a gradient of 5 mm or less.)Improper installation can result in a compressor failure, brokenpiping within the unit and abnormal noise generation.

Air intake

No obstacles(Service space forelectrical parts)

(Servicespace )

Airintake

Air outlet

L3L2

L1

Examples ofinstallation

(mm)

L1

L2

L3

Open300150

Ⅰ

Open5

300

Ⅱ

500Open150

ⅢDemensions


below.• Locations where discharged hot air or operating sound of

the outdoor unit can bother neighborhood.• Locations where outlet air of the outdoor unit blows

directly to plants. The outlet air can affect adversely to theplant etc.

• Locations where vibration can be amplified andtransmitted due to insufficient strength of structure.

• Locations where vibration and operation sound generatedby the outdoor unit can affect seriously (on the wall or atthe place near bed room).

• Locations where an equipment affected by high harmonicsis placed (TV set or radio receiver is placed within 1m).

• Locations where drainage cannot run off safely.It can affect surrounding environment and cause a claim.

• Do not install the unit near the location where leakageof combustible gases can occur.If leaked gases accumulate around the unit, it can cause fire.

• Do not install the unit where corrosive gas (such assulfurous acid gas etc.) or combustible gas (such asthinner and petroleum gases) can accumulate orcollect, or where volatile combustible substances are

handled.Corrosive gas can cause corrosion of heat exchanger,breakage of plastic parts and etc. And combustible gas cancause fire.

• Do not install nor use the system close to theequipment that generates electromagnetic fields orhigh frequency harmonics.Equipment such as inverters, standby generators, medicalhigh frequency equipments and telecommunicationequipments can affect the system, and cause malfunctionsand breakdowns. The system can also affect medicalequipment and telecommunication equipment, and obstructits function or cause jamming.

• Do not install the outdoor unit in a location whereinsects and small animals can inhabit.Insects and small animals can enter the electric parts andcause damage or fire. Instruct the user to keep thesurroundings clean.

• Do not use the base flame for outdoor unit which iscorroded or damaged due to long periods ofoperation.Using an old and damage base flame can cause the unitfalling down and cause personal injury.

• Do not use any materials other than a fuse with thecorrect rating in the location where fuses are to beused.Connecting the circuit with copper wire or other metalthread can cause unit failure and fire.

• Do not touch any buttons with wet hands.It can cause electric shocks.

• Do not touch any refrigerant pipes with your handswhen the system is in operation.During operation the refrigerant pipes become extremely hotor extremely cold depending the operating condition, and itcan cause burn injury or frost injury.

• Do not touch the suction or aluminum fin on theoutdoor unit.This may cause injury.

• Do not put anything on the outdoor unit and operatingunit.This may cause damage the objects or injury due to fallingto the object.

• Do not use the unit for special purposes such asstoring foods, cooling precision instruments andpreservation of animals, plants or art.


- 44 -

'15 • SCM-T-186

INSTALLATION OF OUTDOOR UNIT2

Drainage


Connection of the power source cable and the connecting cablesfor indoor and outdoor units.


⑤④


〔POWER SOURCE CODE〕CENELEC code for cables requiring fields cables. H05RNR3G5.5

〔INTERCONNECTING WIRING CODE〕CENELEC code for cables requiring fields cables. H05RNR4G1.5

1) In wiring, make sure that the wire terminal numbers of outdoor unit terminalblock are match to the wire terminal numbers of indoor unit terminal block.

2) Terminal number A of the outdoor unit is used for A indoor unit and terminalnumber B for B indoor unit respectively.


outdoor unit

1 2 31 2 3 1 2 3


unit A unit B

indoor unitunit C

L N

Circuitbreaker

Earthleakagebreaker

CONNECTION OF REFRIGERANT PIPINGS3 [Examples of use of variable diameter joints]

● Connection of indoor unit of Class 5.0 or 7.1 to A unit.


Liquid side operation valve ( 6.35)6.35 pipe 5.0 kW, 7.1 kW

Indoor unit


( 9.52 - 12.7) ........ 5.0 kW( 9.52 - 15.88) ...... 7.1 kW

12.7 pipe (5.0 kW)15.88 pipe (7.1 kW)


Outdoor

Press

Remove

A

90±

0.5°

Dimension A


9.52 : 13.2dia.12.7 : 16.6dia.15.88 : 19.7dia.

○Remove the flared nuts.(on both liquid and gas sides)

○Install the removed flared nuts to the pipesto be connected, then flare the pipes.


Do not apply refrigerating machineoil to the flared surface.

piping length

hight difference



50m

MAX25mbetween theindoor unit( )

MAX 20m

MAX 20m

outdoorunit

indoorunit

indoorunit

indoorunit

indoorunit

indoorunit

indoorunit

[Limit]

CAUTION CAUTION

Terminalcover

Service panel


Screw

1 2 3 1 2 3 1 2 3

● Execute drain piping by using a drain elbow and drain grommets, where waterdrained from the outdoor unit is a problem.

● There are 3 drain holes provided on the bottom plate of an outdoor unit to dischargecondensed water.

● When condensed water needs to be led to a drain, etc., install the unit on a flat base(supplied separately as an optional part) or concrete blocks.

● Connect a drain elbow as shown in the illustration and close the other two drainholes with grommets.

● Where you are likely to have several days of sub-zero temperatures in a row, do notuse a drain elbow and drain grommets. (There is a risk of drain water freezing insideand blocking the drain.)

● This multi-type room air-conditioner receives its power from outside.● To ensure correct connections, mark each ends of the cables with number, A to F

(5 rooms unit A to E). Itis important to use the same number the correspondingcables and pipes.

● An earth leakage breaker and a circuit breaker must be installed.Their capacities are 30A.



● Regarding the change in the sizes of gas side pipes (usage of the variable joints); If a 5.0, 6.0 kWclass indoor unit (gas side pipe 12.7) or 7.1 kW class indoor unit (gas side pipe 15.88) is going tobe connected to the service valves (9.52), variable joints available as accessories must beapplied to the gas side service valves.

● Securely fit the copper packing between the service valve and the variable diameter joint toprevent shifting.

● Cover the pipes with tape so that dust and sand do not enter the pipe until they are connected.● When connecting the pipes to the outdoor unit, be careful about the discharge of fluorocarbon

gas or oil.● Make sure to match the pipes between the indoor unit and the outdoor unit with the correct

service valves.

unit A unit B unit C unit D unit E unit F

1 2 3 1 2 3

unit D unit E

unit D unit E

1 2 3 1 2 3

1 2 3

unit F

unit F

1 2 3

OutdoorConnection

Liquid sideGas side

Ensure that there are no gas leaks from the pipejoints by using a leak detector or soap water.

Gas Leakage Test

●

○Connect the pipes on both liquid and gas sides.○Tighten the nuts to the following torque.

Liquid side : 14.0～18.0N・m (1.4～1.8kgf・m)Gas side ( 9.52): 34.0～42.0N･m (3.4～4.2kgf･m)

( 12.7): 49.0～61.0N･m (4.9～6.1kgf･m)( 15.88): 68.0～82.0N･m (6.8～8.2kgf･m)

● When the total refrigerant pipe length for all therooms exceeds the length of the uncharged pipe(50m), additional refrigerant is required.(If 50m or less, additonal charge is not required.)Additonal charge amount per meter = 20g/m

Drain elbowDrain hose(To be procured onthe installer’s part)

POWERSUPPLY


250V 30A


SSA564A049A

Copper pipediameter

Clutch type flaretool for R410A

Conventional (R22) flare toolClutch type Wing nut type

Measurement B (mm)

6.359.5212.715.88

0.0～0.50.0～0.50.0～0.50.0～0.5

1.0～1.51.0～1.51.0～1.51.0～1.5

1.5～2.01.5～2.02.0～2.52.0～2.5

Measurement B

Flaring block Copper pipe

Use a flare tool designed for R410A or a conventional flare tool. Please notethat measurement B (protrusion from the flaring block) will vary depending onthe type of a flare tool in use.If a conventional flare tool is used, please use copper pipe gauge or a similarinstrument to check protrusion so that you can keep measurement B to acorrect value.

Grommet

- 45 -

'15 • SCM-T-186






Procedure

(1) Secure all flare nuts on both indoor and outdoor sides toprevent leaks from the pipes.



(4) After vacuuming, fully open the service valve (bothliquid and gas sides) with a hexagon wrench.


Open Open


the slitcomes on top.

Cover the joint withinsulation materialfor the indoor unitand tape it.

Pipe clamp

Pipes

Crossover wires

Exterior tape






outdoor unit.


Piping

WiringIndoor unit Indoor unit

unit C

unit B

unit A

C

AB





After installation

Test run

□ The power source voltage is correct as the rating.□ No gas leaks from the joints of the service valve.□ Power cables and crossover wires are securely fixed to the terminal board.□ Each indoor and outdoor unit is properly connected (no wrong wiring or piping).□ Service valve is fully open.□ Refrigerant has been additionally charged (when the total pipe length exceeds

the refrigerant charged pipe length).□ The pipe joints for indoor and outdoor pipes have been insulated.□ Earthing work has been conducted properly.□ The screw of the service panel is tightened securely.



LED 1

1 TIME FLASH

2 TIME FLASH

4 TIME FLASH

5 TIME FLASH

6 TIME FLASH

8 TIME FLASH

LIGHT ON

4 SEC LIGHTAND

4 SEC OFF

COLOR

RED


FUNCTION

WARNING LAMP

CURRENT CUT

TROUBLE OF OUTDOOR UNITTRANSMISSION ERROR IN OUTDOOR UNIT PCB



SENSOR ERROR




unit F

unit E

unit D

unit F

unit E

unit DOutdoor

unit

F

DE

C

AB

Outdoorunit

F

DE

unit C

unit B

unit A



φ6.35 (1/4")

φ12.7 (1/2")

φ9.52 (3/8")20 30

25 35

φ15.88 (5/8") 30 40

10 12

Service valve size

(mm)


(Gas side)




Handle Hi.

Vacuum pump



Check joint

-0.1MPa(-76cmHg)

Handle Lo

Service valve

Service valve

(Liquid side)

Service valveCap

Service valveCap

Service valvefor room A

Service valvefor room B

Service valvefor room C

Service valvefor room D

Service valvefor room E

Service valvefor room F

Finish and fixing


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R410A REFRIGERANT USEDWALL TYPE AIR CONDITIONER RKY012A011A

WARNING• Installation must be carried out by the qualified installer.


• Install the system in full accordance with the installation manual. Incorrect installation may cause bursts, personal injury, water leaks, electric

shocks and fire.• Be sure to use only for household and residence. If this appliance is installed in inferior environment such as machine shop

and etc., it can cause malfunction. • Use the original accessories and the specified components for

installation. If parts other than those prescribed by us are used, It may cause water

leaks, electric shocks, fire and personal injury.• Install the unit in a location with good support. Unsuitable installation locations can cause the unit to fall and cause

material damage and personal injury.• Ventilate the working area well in the event of refrigerant leakage

during installation. If the refrigerant comes into contact with naked flames, poisonous gas is

produced.• When installing in small rooms, take prevention measures not to

exceed the density limit of refrigerant in the event of leakage, referred by the formula (accordance with ISO5149).


• After completed installation, check that no refrigerant leaks from the system.

If refrigerant leaks into the room and comes into contact with an oven or other hot surface, poisonous gas is produced.

• Use the prescribed pipes, flare nuts and tools for R410A. Using existing parts (for R22 or R407C) can cause the unit failure and

serious accidents due to burst of the refrigerant circuit.

• Tighten the flare nut by torque wrench with specified method. If the flare nut were tightened with excess torque, this may cause burst and

refrigerant leakage after a long period.• The electrical installation must be carried out by the qualified

electrician in accordance with “the norm for electrical work” and “national wiring regulation”, and the system must be connected to the dedicated circuit.


• Be sure to shut off the power before starting electrical work. Failure to shut off the power can cause electric shocks, unit failure or

incorrect function of equipment.• Be sure to use the cables conformed to safety standard and cable

ampacity for power distribution work. Unconformable cables can cause electric leak, anomalous heat production

or fire. • This appliance must be connected to main power source by means

of a circuit breaker or switch (fuse:16A) with a contact separation of at least 3mm.

• When plugging this appliance, a plug conforming to the norm IEC60884-1 must be used.

• Use the prescribed cables for electrical connection, tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks.



Incorrect installation may result in overheating and fire.• Be sure to switch off the power source in the event of installation,

inspection or servicing. If the power source is not shut off, there is a risk of electric shocks, unit

failure or personal injury due to the unexpected start of fan.• Be sure to wear protective goggles and gloves while at work.• Earth leakage breaker must be installed. If the earth leakage breaker is not installed, it can cause electric shocks.

CAUTION


Using the incorrect one could cause the system failure and fire.• Install isolator or disconnect switch on the power source wiring in

accordance with the local codes and regulations. The isolator should be locked in OFF state in accordance with EN60204-1.• Be sure to install indoor unit properly according to the installation

manual in order to run off the drainage smoothly. Improper installation of indoor unit can cause dropping water into the room

and damaging personal property.• Install the drainage pipe to run off drainage securely according to

the installation manual. Incorrect installation of the drainage pipe can cause dropping water into the

room and damaging personal property.• Be sure to install the drainage pipe with descending slope of 1/100

or more, and not to make traps and air-bleedings. Check if the drainage runs off securely during commissioning and ensure

the space for inspection and maintenance. • Secure a space for installation, inspection and maintenance

specified in the manual. Insufficient space can result in accident such as personal injury due to

falling from the installation place.• For installation work, be careful not to get injured with the heat

exchanger, piping flare portion or screws etc.• Be sure to insulate the refrigerant pipes so as not to condense the

ambient air moisture on them. Insufficient insulation can cause condensation, which can lead to moisture

damage on the ceiling, floor, furniture and any other valuables.• When perform the air-conditioner operation (cooling or drying opera-

tion) in which ventilator is installed in the room. In this case, using the air-conditioner in parallel with the ventilator, there is the possibility that drain water may backflow in accordance with the room lapse into the negative pressure status. Therefore, set up the opening port such as incorporate the air into the room that may appropriate to ventila-tion (For example; Open the door a little). In addition, just as above, so set up the opening port if the room lapse into negative pressure status due to register of the wind for the high rise apartment etc.

• Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work.

If the density of refrigerant exceeds the limit in the event of refrigerant leakage in the small room, lack of oxygen can occur, which can cause serious accidents.

• Do not install the unit in the locations listed below. • Locations where carbon fiber, metal powder or any powder is floating. • Locations where any substances that can affect the unit such as sulphide

gas, chloride gas, acid and alkaline can occur. • Vehicles and ships. • Locations where cosmetic or special sprays are often used. • Locations with direct exposure of oil mist and steam such as kitchen and

machine plant. • Locations where any machines which generate high frequency harmonics

are used. • Locations with salty atmospheres such as coastlines. • Locations with heavy snow (If installed, be sure to provide base flame and

snow hood mentioned in the manual). • Locations where the unit is exposed to chimney smoke. • Locations at high altitude (more than 1000m high). • Locations with ammonic atmospheres (e.g. organic fertilizer).

• Locations with calcium chloride (e.g. snow melting agent). • Locations where heat radiation from other heat source can affect the unit. • Locations without good air circulation. • Locations with any obstacles which can prevent inlet and outlet air of the unit. • Locations where short circuit of air can occur (in case of multiple units

installation). • Locations where strong air blows against the air outlet of outdoor unit. • Locations where something located above the unit could fall. It can cause remarkable decrease in performance, corrosion and damage

of components, malfunction and fire.• Do not install the indoor unit in the locations listed below (Be sure

to install the indoor unit according to the installation manual for each model because each indoor unit has each limitation).

• Locations with any obstacles which can prevent inlet and outlet air of the unit.

• Locations where vibration can be amplified due to insufficient strength of structure.

• Locations where the infrared receiver is exposed to the direct sunlight or the strong light beam (in case of the infrared specification unit).


• Locations where drainage cannot run off safely. It can affect performance or function and etc. • Do not install the unit near the location where leakage of

combustible gases can occur. If leaked gases accumulate around the unit, it can cause fire.• Do not install the unit where corrosive gas (such as sulfurous acid

gas etc.) or combustible gas (such as thinner and petroleum gases) can accumulate or collect, or where volatile combustible substances are handled.

Corrosive gas can cause corrosion of heat exchanger, breakage of plastic parts and etc. And combustible gas can cause fire.

• Do not use the indoor unit at the place where water splashes may occur such as in laundries.

Since the indoor unit is not waterproof, it can cause electric shocks and fire. • Do not install nor use the system close to the equipment that

generates electromagnetic fields or high frequency harmonics. Equipment such as inverters, standby generators, medical high frequency

equipments and telecommunication equipments can affect the system, and cause malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.

• Do not place any variables which will be damaged by getting wet under the indoor unit.

When the relative humidity is higher than 80% or drainage pipe is clogged, condensation or drainage water can drop and it can cause the damage of valuables.

• Do not install the remote control at the direct sunlight. It can cause malfunction or deformation of the remote control.• Do not use the unit for special purposes such as storing foods,

cooling precision instruments and preservation of animals, plants or art.

It can cause the damage of the items.• Do not use any materials other than a fuse with the correct rating in

the location where fuses are to be used. Connecting the circuit with copper wire or other metal thread can cause

unit failure and fire.• Do not touch any buttons with wet hands. It can cause electric shocks.• Do not touch any refrigerant pipes with your hands when the

system is in operation. During operation the refrigerant pipes become extremely hot or extremely

cold depending the operating condition, and it can cause burn injury or frost injury.

• Carry out the electrical work for ground lead with care. Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults

such as electric shocks due to short-circuiting.

• Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulphide gas can occur.

Poisonous gases will flow into the room through drainage pipe and seriously affect the user’s health and safety. This can also cause the corrosion of the indoor unit and a resultant unit failure or refrigerant leak.






This may cause fire or heating.

• Do not vent R410A into the atmosphere : R410A is a fluorinated greenhouse gas, covered by the Kyoto Protocol with Groval Warming Potential (GWP)=1975.

• Do not run the unit with removed panels or protections. Touching rotating equipments, hot surfaces or high voltage parts can cause

personal injury due to entrapment, burn or electric shocks.



WARNING

SAFETY PRECAUTIONS• Read the “SAFETY PRECAUTIONS” carefully first of all and strictly follow it

during the installation work in order to protect yourself.• The precautionary items mentioned below are distinguished into two levels, and . : Wrong installation would cause serious consequences such

as injuries or death. : Wrong installation might cause serious consequences

depending on circumstances. Both mentions the important items to protect your health and safety so strictly

follow them by any means.• Be sure to confirm no anomaly on the equipment by commissioning after com-

pleted installation and explain the operating methods as well as the maintenance methods of this equipment to the user according to the owner’s manual.



• Please pay attention not to fall down the tools, etc. when installing the unit at the high position.

• If unusual noise can be heard during operation, consult the dealer.• The meanings of “Marks” used here are shown as follows:



CAUTIONWARNING

CAUTION

WARNING

• This installation manual illustrates the method of installing an indoor unit.

• For electrical wiring work, please see instructions set out on the backside.

• For outdoor unit installation and refrigerant piping, please refer to page 30.

• A wired remote control unit is supplied separately as an option part.• When install the unit, be sure to check whether the selection of

installation place, power source specifications, usage limitation (piping length, height differences between indoor and outdoor units, power source voltage and etc.) and installation spaces.

2.6 Application data (1) Wall mounted type (SRK)

(a) Models SRK20ZMX-S, 25ZMX-S, 35ZMX-S, 50ZMX-S, 60ZMX-S

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Necessary tools for the installation work

1

2

3

4

5

6

7

8

9

10

11

12

13

1

1

1

1

1

1

Q’tyOption parts

Sealing plate

Sleeve

Inclination plate

Putty

Drain hose (extension hose)

Piping cover(for insulation of connection piping)

Plus headed driver

Knife

Saw

Tape measure

Hammer

Spanner wrench

Torque wrench

Hole core drill (65mm in diameter)

Wrench key (Hexagon) [4m/m]

Flaring tool set

Gas leak detector

Pipe bender

Gauge for projection adjustment Used when flare is made by using conventional flare tool

( )

( )

14.0 ~ 61.0N·m(1.4 ~ 6.1kgf·m)(

Designed specificallyfor R410A

)Piping in the left direction

Piping in the right rear directionPiping in the left rear direction

Piping in the right direction

INSTALLATION SPACE (INDOOR UNIT) (FRONT VIEW)

Piping is possible in the rear, left, left rear, left downward, right or downward direction.

Right

Rear

DownwardLeft rear

Left downward

Left

○ Before installation check that the power source matches the air-conditioner.

Indoor unit

Relation between setting plate and indoor unit

Installing the support of piping

(Install at location that meets the following conditions, after getting approval from the customer)

○ Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed.○ A solid place where the unit or the wall will not vibrate.○ A place where there will be enough space for servicing. (Where space mentioned below can be secured)○ Where wiring and the piping work will be easy to conduct.○ The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting.○ A place where it can be easily drained.○ A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.)○ Places where this unit is not affected by the high frequency equipment or electric equipment.○ Avoid installing this unit in place where there is much oil mist.○ Places where there is no electric equipment or household under the installing unit.○ Install the indoor unit on the wall where the height from the floor is more than 1.8m.

Wireless remote control

In case of piping in the right rear direction

○ A place where the air-conditioner can be received the signal surely during operating the wireless remote control.○ Places where there is no affected by the TV and radio etc.○ Do not place where exposed to direct sunlight or near heat devices such as a stove.

Sufficient care must be taken not to damage the panel when connecting pipes.

[Top view]

When drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use pipe hole sleeve sold separately.

• Matters of special notice when piping from left or central/rear of the unit.

Left-hand-side piping Right-hand-side piping

Installation of installation board

Drilling of holes and fixture of sleeve (Option parts)

Level position (2 locations)

Mating mark for level surface

Fixing on concrete wallUse of nut anchor Use of bolt anchor

Shaping of pipings Taping of the exterior

Pipings

Drain hose

Top

Nut(M6)

Mountingboard

Mountingboard

Max.10

Thickness of the wall + 1.5cm

5

ø65

Indoor side Outdoor sideIndoor side Outdoor side Installed state

Turn totighten

b b c

a

Bolt(M6 12)

○ In case of rear piping draw out, cut off the lower and the right side portions of the sleeve collar.

○ Drill a hole with whole core drill.

○ Hold the bottom of the piping and fix direction before stretching it and shaping it.

○ Tape only the portion that goes through the wall.

○ Always tape the wiring with the piping.

[Drain hose changing procedures]1. Remove the drain hose 2. Remove the drain cap.

○ Remove it with hand or pliers.○ Remove the screw and drain hose, making it rotate.

3. Insert the drain cap. 4. Connect the drain hose.

○ Insert the drain cap which was removed at procedure “2” securely using a hexagonal wrench etc.Note: Be careful that If it is not inserted

securely, water leakage may occur.

○ Insert the drain hose securely, making rotate. And install the screw.Note: Be careful that If it is not inserted


○ Adjustment of the installation board in the horizontal direction is to be conducted with four screws in a temporary tightened state.

○ Adjust so the board will be level by turning the board with the standard hole as the center.

Look for the inside wall structures (Intermediats support or pillar and firmly install the unit after level surface has been checked.)

Standardhole

Piping for Liquid (20 to 60 type) : ø6.35Piping for Gas (20 to 35 type) : ø9.52

(50 to 60 type) : ø12.7

1

1

1

4

2

2

2

2

1

Q’tyStandard accessories (Installation kit)Accessories for indoor unit

Installation board(Attached to the rear of the indoor unit)


Remote control holder

Battery [R03 (AAA, Micro) 1.5V]

Air-cleaning filters

Filter holders(Attached to the front panel of indoor unit)

Insulation (#486 50 x 100 t3)

Tapping screws (for installation board ø4 X 25mm)

Wood screws(for remote control holder ø3.5 X 16mm)

1

2

3

4

5

6

7

8

9

( )Designed specificallyfor R410A

Completely seal the hole on the wall with putty. Otherwise, furniture, or other, may be wetted by leaked water or dewing.

putty

putty

Indoor side Outdoor side



Wood screws

(Unit : mm)

Nothing is connected to this hole on the back of indoor unit.

Installation board

10 cm minimumfrom the wall

7.0 cm minimum from the ceiling

Sleeve(sold separately)


220650450 220

100120

35 35

58 54

491.1

520.8

559.1

48.9

222.

548

70Sp

ace

for

serv

ice

15Sp

ace

for

serv

ice

7.9

295.

45.

6

48

Installation board

Piping for Gas

Drain hose (ø16)

Piping for Liquid Piping hole (ø65)Piping hole (ø65)

Space for service Space for serviceIndoor unit

12050

450

180

cm m

inim

um fr

om th

e flo

or

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Flaring

Finishing work and fixing

Connection wiring, Earth wiringOuter tape

Refrigerant piping

Drain hoseWood screw

Clamp

Cover the exterior portion with outer tape andshape the piping so it will match the contoursof the route that the piping to take.Also fix the wiring and pipings to the wall withclamps.

Open/close and detachment/attachment of the air inlet panel

○ To open, pull the panel at both ends of lower part and release latches, then pull up the panel until you feel resistance.(The panel stops at approx. 60 open position)

○ To close, hold the panel at both ends of lower part to lower downward and push it slightly until the latch works.

○ To remove, pull up the panel to the position shown in right illustration and pull it toward you.

○ To install, insert the panel arm into the slot on the front panel from the position shown in right illustration, hold the panel at both ends of lower part, lower it downward slowly, then push it slightly until the latch works.

How to remove and fit the front panel

○ RemovingRemove the air inlet panel.Remove the 5 set screws.Remove the 4 latches in the upper section.Move the lower part of the panel forward and push upwards to remove.

1234

○ FittingDo remove the air filter.Cover the body with the front panel.Fit the 4 latches in the upper section.Tighten the 5 set screws.Fit the air filter.Fit the air inlet panel.

123456

○ Install the removed flared nuts to the pipes to be connected, then flared the pipes.

○ Remove the flared nuts. (on both liquid and gas sides)

Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.

CONNECTION OF REFRIGERANT PIPINGSPreparation

(Do not turn)Press

Remove

A

90 ±

0.5

˚ Dimension ALiquid side ø6.35 : 9.1 (mm)Gas side ø9.52 : 13.2 (mm)

ø12.7 : 16.6 (mm)

CAUTION

Do not apply refrigerating machine oil to the flared surface.

Indoor

Copper pipe diameter

Use a flare tool designed for R410A or a conventional flare tool.Please note that measurement B (protrusion from the flaring block) will vary depending on the type of a flare tool in use.If a conventional flare tool is used, please use a copper pipe gauge or a similar instrument to check protrusion so that you can keep measurement B to a correct value.

Clutch type flare tool forR410A

Conventional (R22) flare tool

ø6.35

ø9.52

ø12.7

0.0 - 0.5

0.0 - 0.5

0.0 - 0.5

1.0 - 1.5

1.0 - 1.5

1.0 - 1.5

1.5 - 2.0

1.5 - 2.0

2.0 - 2.5

Measurement B (mm)


CAUTION

Do not apply excess torque to the flared nuts. Otherwise, the flared nuts may check depending.

○ Arrange the drain hose in a downward angle.○ Avoid the following drain piping.

○ Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor.○ When the extended drain hose is indoor, securely insulate it with a heat insulator available in the market.

CAUTION

Wall

Gutter

Pipe accommodating section

Since this air-conditioner has been designed to collect dew drops on the rear surface to the drain pan, do not attach the power cord above the gutter.

Drainage

Go through all installation steps and check if the drainage is all right. Otherwise water leak may occur.

Higher than specified The drain hosetip is in water.

Wavy The drain hosetip is in the gutter.

The gap to the ground is5 cm or less.

Odor fromthe gutter

2

1

Installation Steps

Pass the pipe throughthe hole in the wall,and hook the upperpart of the indoor unitto the installation board.

Gently push the lowerpart to secure the unit.

• How to remove the indoor unit from the installation board

Fixing of indoor unit

Push up at the marked portion of the indoor unit base lower latch, and slightly pull it toward you. (both right and left hand sides) (The indoor unit base lower latch can be removed from the installation board)Push up the indoor unit upward. So the indoor unit will be removed from the installation board.

1

2

○ Connect the pipes on both liquid and gas sides.○ Tighten the nuts to the following torque.

Liquid side (ø6.35) : 14.0 - 18.0 N·m (1.4 - 1.8 kgf·m)Gas side (ø9.52) : 34.0 - 42.0 N·m (3.4 - 4.2 kgf·m)

(ø12.7) : 49.0 - 61.0 N·m (4.9 - 6.1 kgf·m)

Connection Insulation of the connection portion

Indoor Liquid sideGas side

(Do not turn)

• Cover the indoor unit s flare-connected joints, after they are checked for a gas leak, with an indoor unit heat insulating material and then wrap them with a tape with an attached insulation pad placed over the heat insulating material’s slit area.

Cover the coupling with insulator and then cover it with tapes.

Vinyl tape Use an attached insulation pad for heat insulation.

Position it so that the slit area faces upward.

• Flaring work

Measurement B

block Copper pipe

The marked portion of the indoorunit base lower latch.

Indoor unitI

Latch(2 locations)

Installationborad

Installation boradWall

Indoor unit base lower latch

Set screws latch

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Open the air inlet panel.Remove the service panel.Remove the wiring clamp.Connect the connecting wire securely to the terminal block.1) Connect the connection wire securely to the terminal

block. If the wire is not affixed completely, contact will be poor, and it is dangerous as the terminal block may heat up and catch fire.

2) Take care not to confuse the terminal numbers for indoor and outdoor connections.

Fix the connecting wire by wiring clamp.Attach the service panel.Close the air inlet panel.

1234

567

ELECTRICAL WIRING WORKCAUTION

In case of faulty wiring connection, the indoor unit stops, and then the run lamp turns on and the timer lamp blinks.

Use cables for interconnection wiring to avoid loosening of the wires.CENELEC code for cables Required field cables.

H05RNR4G1.5 (example) or 245IEC57 H Harmonized cable type 05 300/500 volts R Natural-and/or synth, rubber wire insulation N Polychloroprene rubber conductors insulation R Stranded core 4or5 Number of conductors G One conductor of the cable is the earth conductor (yellow/green) 1.5 Section of copper wire (mm2)

Preparation of indoor unit

Mounting of connecting wires

• Forced cooling operationTurn on a power source again after a while after turn off a power source.Then press continually the ON/OFF button 5 seconds or more.

CONCERNING TERMINAL CONNECTION FOR AN INTERFACERemove the front panel and lid of control.Remove the control.There is a terminal (respectively marked with CNS) for the indoor control board.In connecting an interface, connect to the respective terminal securely with the connection harness supplied with an optional “ Interface connection kit SC-BIKN-E” and fasten the connection harness onto the indoor control box with the clamp supplied with the kit.For more details, please refer to the user’s manual of your “ Interface connection kit SC-BIKN-E”.

123

○ Uncover the wireless remote control, and mount the batteries [R03 (AAA, Micro), ×2 pieces] in the body regularly.(Fit the poles with the indication marks, ＋ & － without fail)

○ Conventionally, operate the wireless remote control by holding in your hand.

○ Avoid installing it on a clay wall etc.

Cover

CAUTION

Wood screwsø3.5 X 16


Battery

INSTALLATION OF WIRELESS REMOTE CONTROLMounting method of battery Fixing to pillar or wall

Do not use new and old batteries together.

2

6

5

Disconnect

TIME SETUPACL

When two air-conditioners are installed in the same room, use this setting when the two air-conditioners are not operated with one wireless remote control. Set the wireless remote control and indoor unit.

INSTALLING TWO AIR-CONDITIONERS IN THE SAME ROOM

Setting the wireless remote controlPull out the cover and take out batteries.Disconnect the switching line next to the battery with wire cutters.

Insert batteries. Close the cover.

12

3

Setting an indoor unit12

3

Turn off the power source, and turn it on after 1 minute.Point the wireless remote control that was set according to the procedure described on the left side at the indoor unit and send a signal by pressing the ACL switch on the remote control.Since the signal is sent in about 6 seconds after the ACL switch is pressed, point the wireless remote control at the indoor unit for some time.Check that the reception buzzer sound "pip" is emitted from the indoor unit.At completion of the setting, the indoor unit emits a buzzer sound "pip". (If no reception tone is emitted, start the setting from the beginning again.)

INSTALLATION TEST CHECK POINTSAfter installation

The power source voltage is correct as the rating.No gas leaks from the joints of the service valve.Power cables and crossover wires are securely fixed to the terminal board.The screw of the service panel is tightened securely.

Test runAir-conditioning operation is normal.No abnormal noise.Water drains smoothly.Protective functions are not working.

The wireless remote control is normal.Operation of the unit has been explained to the customer. (Three-minutes restart preventive timer)When the air-conditioner is restarted or when changing the operation, the unit will not start operating for approximately 3 minutes. This is to protect the unit and it is not a malfunction.

Service valve is fully open.The pipe joints for indoor and outdoor pipes have been insulated.

Check the following points again after completion of the installation, and before turning on the power. Conduct a test run again and ensure that the unit operates properly.At the same time, explain to the customer how to use the unit and how to take care of the unit following the user’s manual.

Reception

pip

Installing the air-cleaning filters

Air-cleaning filter

1. Open the air inlet panel and remove the air filters.2. Install the air-cleaning filter in the filter holders, and then install the filter holders in the air-conditioner.

• Each air-cleaning filter can be installed in the left or right filter holder.3. Install the air filters and close the inlet panel.

Connect charge hose to check joint of outdoor unit.Liquid side : Close the liquid valve with hexagon wrench key.Gas side : Fully open the service valve (Gas side).Carry out cooling operation. (If indoor temperature is low, operate forced cooling operation.)After low pressure gauge become 0.01MPa, stop cooling operation and close the service valve (Gas side).

12

3

<How to pump down>

○ In order to protect the environment, be sure to pump down (recovery of refrigerant).○ Pump down is the method of recovering refrigerant from the indoor unit to the

outdoor unit when the pipes are removed from the unit.

HOW TO RELOCATE OR DISPOSE OF THE UNIT

Terminal block

Service panel

Clamp


Filter holder

Unit ON/OFF button

• Earth wire shall be Yellow/Green (Y/G) in color and longer than other AC wires for safety reason.

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R410A REFRIGERANT USEDWALL TYPE AIR CONDITIONER RLA012A020A


• Install the system in full accordance with the installation manual. Incorrect installation may cause bursts, personal injury, water leaks, electric

shocks and fire.• Be sure to use only for household and residence. If this appliance is installed in inferior environment such as machine shop

and etc., it can cause malfunction. • Use the original accessories and the specified components for

installation. If parts other than those prescribed by us are used, It may cause water

leaks, electric shocks, fire and personal injury.• Install the unit in a location with good support. Unsuitable installation locations can cause the unit to fall and cause

material damage and personal injury.• Ventilate the working area well in the event of refrigerant leakage

during installation. If the refrigerant comes into contact with naked flames, poisonous gas is

produced.• When installing in small rooms, take prevention measures not to

exceed the density limit of refrigerant in the event of leakage, referred by the formula (accordance with ISO5149).


• After completed installation, check that no refrigerant leaks from the system.

If refrigerant leaks into the room and comes into contact with an oven or other hot surface, poisonous gas is produced.

• Use the prescribed pipes, flare nuts and tools for R410A. Using existing parts (for R22 or R407C) can cause the unit failure and

serious accidents due to burst of the refrigerant circuit.

• Tighten the flare nut by torque wrench with specified method. If the flare nut were tightened with excess torque, this may cause burst and

refrigerant leakage after a long period.• The electrical installation must be carried out by the qualified

electrician in accordance with “the norm for electrical work” and “national wiring regulation”, and the system must be connected to the dedicated circuit.


• Be sure to shut off the power before starting electrical work. Failure to shut off the power can cause electric shocks, unit failure or

incorrect function of equipment.• Be sure to use the cables conformed to safety standard and cable

ampacity for power distribution work. Unconformable cables can cause electric leak, anomalous heat production

or fire. • This appliance must be connected to main power source by means

of a circuit breaker or switch (fuse:16A) with a contact separation of at least 3mm.


• Use the prescribed cables for electrical connection, tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks.



Incorrect installation may result in overheating and fire.• Be sure to switch off the power source in the event of installation,

inspection or servicing. If the power source is not shut off, there is a risk of electric shocks, unit

failure or personal injury due to the unexpected start of fan.• Be sure to wear protective goggles and gloves while at work.• Earth leakage breaker must be installed. If the earth leakage breaker is not installed, it can cause electric shocks.

CAUTION


Using the incorrect one could cause the system failure and fire.• Install isolator or disconnect switch on the power source wiring in

accordance with the local codes and regulations. The isolator should be locked in OFF state in accordance with EN60204-1.• Be sure to install indoor unit properly according to the installation

manual in order to run off the drainage smoothly. Improper installation of indoor unit can cause dropping water into the room

and damaging personal property.• Install the drainage pipe to run off drainage securely according to

the installation manual. Incorrect installation of the drainage pipe can cause dropping water into the

room and damaging personal property.• Be sure to install the drainage pipe with descending slope of 1/100

or more, and not to make traps and air-bleedings. Check if the drainage runs off securely during commissioning and ensure

the space for inspection and maintenance. • Secure a space for installation, inspection and maintenance

specified in the manual. Insufficient space can result in accident such as personal injury due to

falling from the installation place.• For installation work, be careful not to get injured with the heat

exchanger, piping flare portion or screws etc.• Be sure to insulate the refrigerant pipes so as not to condense the

ambient air moisture on them. Insufficient insulation can cause condensation, which can lead to moisture

damage on the ceiling, floor, furniture and any other valuables.• When perform the air-conditioner operation (cooling or drying opera-

tion) in which ventilator is installed in the room. In this case, using the air-conditioner in parallel with the ventilator, there is the possibility that drain water may backflow in accordance with the room lapse into the negative pressure status. Therefore, set up the opening port such as incorporate the air into the room that may appropriate to ventila-tion (For example; Open the door a little). In addition, just as above, so set up the opening port if the room lapse into negative pressure status due to register of the wind for the high rise apartment etc.

• Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work.


• Do not install the unit in the locations listed below. • Locations where carbon fiber, metal powder or any powder is floating. • Locations where any substances that can affect the unit such as sulphide

gas, chloride gas, acid and alkaline can occur. • Vehicles and ships. • Locations where cosmetic or special sprays are often used. • Locations with direct exposure of oil mist and steam such as kitchen and

machine plant. • Locations where any machines which generate high frequency harmonics

are used. • Locations with salty atmospheres such as coastlines. • Locations with heavy snow (If installed, be sure to provide base flame and

snow hood mentioned in the manual). • Locations where the unit is exposed to chimney smoke. • Locations at high altitude (more than 1000m high).


• Locations where heat radiation from other heat source can affect the unit. • Locations without good air circulation. • Locations with any obstacles which can prevent inlet and outlet air of the unit. • Locations where short circuit of air can occur (in case of multiple units

installation). • Locations where strong air blows against the air outlet of outdoor unit. • Locations where something located above the unit could fall. It can cause remarkable decrease in performance, corrosion and damage

of components, malfunction and fire.• Do not install the indoor unit in the locations listed below (Be sure

to install the indoor unit according to the installation manual for each model because each indoor unit has each limitation).

• Locations with any obstacles which can prevent inlet and outlet air of the unit.

• Locations where vibration can be amplified due to insufficient strength of structure.

• Locations where the infrared receiver is exposed to the direct sunlight or the strong light beam (in case of the infrared specification unit).


• Locations where drainage cannot run off safely. It can affect performance or function and etc. • Do not install the unit near the location where leakage of

combustible gases can occur. If leaked gases accumulate around the unit, it can cause fire.• Do not install the unit where corrosive gas (such as sulfurous acid

gas etc.) or combustible gas (such as thinner and petroleum gases) can accumulate or collect, or where volatile combustible substances are handled.

Corrosive gas can cause corrosion of heat exchanger, breakage of plastic parts and etc. And combustible gas can cause fire.

• Do not use the indoor unit at the place where water splashes may occur such as in laundries.

Since the indoor unit is not waterproof, it can cause electric shocks and fire. • Do not install nor use the system close to the equipment that

generates electromagnetic fields or high frequency harmonics. Equipment such as inverters, standby generators, medical high frequency

equipments and telecommunication equipments can affect the system, and cause malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.

• Do not place any variables which will be damaged by getting wet under the indoor unit.

When the relative humidity is higher than 80% or drainage pipe is clogged, condensation or drainage water can drop and it can cause the damage of valuables.

• Do not install the remote control at the direct sunlight. It can cause malfunction or deformation of the remote control.• Do not use the unit for special purposes such as storing foods,

cooling precision instruments and preservation of animals, plants or art.

It can cause the damage of the items.• Do not use any materials other than a fuse with the correct rating in

the location where fuses are to be used. Connecting the circuit with copper wire or other metal thread can cause

unit failure and fire.• Do not touch any buttons with wet hands. It can cause electric shocks.• Do not touch any refrigerant pipes with your hands when the

system is in operation. During operation the refrigerant pipes become extremely hot or extremely

cold depending the operating condition, and it can cause burn injury or frost injury.

• Carry out the electrical work for ground lead with care. Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults

such as electric shocks due to short-circuiting.

• Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulphide gas can occur.

Poisonous gases will flow into the room through drainage pipe and seriously affect the user’s health and safety. This can also cause the corrosion of the indoor unit and a resultant unit failure or refrigerant leak.






This may cause fire or heating.


• Do not run the unit with removed panels or protections. Touching rotating equipments, hot surfaces or high voltage parts can cause

personal injury due to entrapment, burn or electric shocks.



WARNING

SAFETY PRECAUTIONS• Read the “SAFETY PRECAUTIONS” carefully first of all and strictly follow it

during the installation work in order to protect yourself.• The precautionary items mentioned below are distinguished into two levels, and . : Wrong installation would cause serious consequences such


depending on circumstances. Both mentions the important items to protect your health and safety so strictly

follow them by any means.• Be sure to confirm no anomaly on the equipment by commissioning after com-

pleted installation and explain the operating methods as well as the maintenance methods of this equipment to the user according to the owner’s manual.



• Please pay attention not to fall down the tools, etc. when installing the unit at the high position.




CAUTIONWARNING

CAUTION

WARNING

• This installation manual illustrates the method of installing an indoor unit.

• For electrical wiring work, please see instructions set out on the backside.

• For outdoor unit installation and refrigerant piping, please refer to page 30.

• A wired remote control unit is supplied separately as an option part.• When install the unit, be sure to check whether the selection of

installation place, power source specifications, usage limitation (piping length, height differences between indoor and outdoor units, power source voltage and etc.) and installation spaces.

(b) Models SRK20ZM-S, 25ZM-S, 35ZM-S, 50ZM-S

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1

2

3

4

5

6

7

8

9

10

11

12

13

1

1

1

1

1

1

Q’tyOption parts

Sealing plate

Sleeve

Inclination plate

Putty



Plus headed driver

Knife

Saw

Tape measure

Hammer

Spanner wrench

Torque wrench



Flaring tool set

Gas leak detector

Pipe bender


( )

( )

14.0 ~ 61.0N·m(1.4 ~ 6.1kgf·m)(


)Piping in the left direction





Right

Rear

DownwardLeft rear

Left downward

Left

○ Before installation check that the power source matches the air-conditioner.

Indoor unit




○ Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed.○ A solid place where the unit or the wall will not vibrate.○ A place where there will be enough space for servicing. (Where space mentioned below can be secured)○ Where wiring and the piping work will be easy to conduct.○ The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting.○ A place where it can be easily drained.○ A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.)○ Places where this unit is not affected by the high frequency equipment or electric equipment.○ Avoid installing this unit in place where there is much oil mist.○ Places where there is no electric equipment or household under the installing unit.○ Install the indoor unit on the wall where the height from the floor is more than 1.8m.





[Top view]




Installation of installation board


Level position (2 locations)

Mating mark for level surface

Fixing on concrete wallUse of nut anchor Use of bolt anchor


Pipings

Drain hose

Top

Nut(M6)

Mountingboard

Mountingboard

Max.10


5

ø65


Turn totighten

b b c

a

Bolt(M6 12)



Installation board


6.5 cm minimum from the ceiling


○ Drill a hole with whole core drill.

○ Hold the bottom of the piping and fix direction before stretching it and shaping it.


○ Always tape the wiring with the piping.


○ Remove it with hand or pliers.○ Remove the screw and drain hose, making it rotate.

3. Insert the drain cap. 4. Connect the drain hose.

○ Insert the drain cap which was removed at procedure “2” securely using a hexagonal wrench etc.Note: Be careful that If it is not inserted




○ Adjustment of the installation board in the horizontal direction is to be conducted with four screws in a temporary tightened state.


450

Look for the inside wall structures (Intermediats support or pillar and firmly install the unit after level surface has been checked.)

Standardhole

Piping for Liquid Model SRK20～50, DXK09～18 : ø6.35Piping for Gas Model SRK20～35, DXK09 / 12 : ø9.52

Model SRK50, DXK18 : ø12.7

Completely seal the hole on the wall with putty. Otherwise, furniture, or other, may be wetted by leaked water or dewing.

putty

putty

1

1

1

5

2

2

2

2

1








Insulation (#486 50 x 100 t3)



1

2

3

4

5

6

7

8

9


Space for service Space for serviceIndoor unit Installation board

Piping hole (ø65)

Drain hose (ø16)Piping for Liquid

Piping for Gas

Piping hole (ø65)

Spac

e fo

r ser

vice

48.9

47

65

139 450 209106.5 585 106.5

50 100

7.2

7.7

279.

1

4715

Spa

ce fo

r ser

vice

55

531.8471.6

403.655




Wood screws

(Unit : mm)

180

cm m

inim

um fr

om th

e flo

or

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Flaring



Refrigerant piping


Clamp

Cover the exterior portion with outer tape andshape the piping so it will match the contoursof the route that the piping to take.Also fix the wiring and pipings to the wall withclamps.


○ To open, pull the panel at both ends of lower part and release latches, then pull up the panel until you feel resistance.(The panel stops at approx. 60 open position)

○ To close, hold the panel at both ends of lower part to lower downward and push it slightly until the latch works.



How to remove and fit the front panel

○ RemovingRemove the air inlet panel.Remove the 2 set screws.Remove the 3 latches in the upper section.Move the lower part of the panel forward and push upwards to remove.

1234

○ FittingDo remove the air filter.Cover the body with the front panel.Fit the 3 latches in the upper section.Tighten the 2 set screws.Fit the air filter.Fit the air inlet panel.

123456

Set screws





(Do not turn)Press

Remove

A

90 ±

0.5

˚ Dimension ALiquid side ø6.35 : 9.1 (mm)Gas side ø9.52 : 13.2 (mm)

ø12.7 : 16.6 (mm)

CAUTION


Indoor


Use a flare tool designed for R410A or a conventional flare tool.Please note that measurement B (protrusion from the flaring block) will vary depending on the type of a flare tool in use.If a conventional flare tool is used, please use a copper pipe gauge or a similar instrument to check protrusion so that you can keep measurement B to a correct value.



ø6.35

ø9.52

ø12.7

0.0 - 0.5

0.0 - 0.5

0.0 - 0.5

1.0 - 1.5

1.0 - 1.5

1.0 - 1.5

1.5 - 2.0

1.5 - 2.0

2.0 - 2.5

Measurement B (mm)


CAUTION

Do not apply excess torque to the flared nuts. Otherwise, the flared nuts may check depending.


○ Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor.○ When the extended drain hose is indoor, securely insulate it with a heat insulator available in the market.

CAUTION

Wall

Gutter



Drainage


Higher than specified The drain hosetip is in water.

Wavy The drain hosetip is in the gutter.

The gap to the ground is5 cm or less.

Odor fromthe gutter

2

1

Installation Steps

Pass the pipe throughthe hole in the wall,and hook the upperpart of the indoor unitto the installation board.

Gently push the lowerpart to secure the unit.

• How to remove the indoor unit from the installation board


Push up at the marked portion of the indoor unit base lower latch, and slightly pull it toward you. (both right and left hand sides) (The indoor unit base lower latch can be removed from the installation board)Push up the indoor unit upward. So the indoor unit will be removed from the installation board.

1

2

The marked portion of the indoor unit base lower latch.

Indoor unit

Installation board

Installation board

Indoor unit base latch

Wall

Latch (2 locations)



(ø12.7) : 49.0 - 61.0 N·m (4.9 - 6.1 kgf·m)


Indoor Liquid sideGas side

(Do not turn)

• Cover the indoor unit s flare-connected joints, after they are checked for a gas leak, with an indoor unit heat insulating material and then wrap them with a tape with an attached insulation pad placed over the heat insulating material’s slit area.

Cover the coupling with insulator and then cover it with tapes.

Vinyl tape Use an attached insulation pad for heat insulation.


• Flaring work

Measurement B

block Copper pipe

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Remove the lid.Remove the terminal cover.Remove the wiring clamp.Connect the connecting wire securely to the terminal block.1) Connect the connection wire securely to the terminal



Fix the connecting wire by wiring clamp.Attach the terminal cover.Attach the lid.

1234

567


Use cables for interconnection wiring to avoid loosening of the wires.CENELEC code for cables Required field cables.


Preparation of indoor unit


Terminal block

Lid

Terminal cover

Clamp

The screws of the lid and the terminal cover are tightened securely.

1 32 N

• Forced cooling operationTurn on a power source again after a while after turn off a power source.Then press continually the ON/OFF button 5 seconds or more.

CONCERNING TERMINAL CONNECTION FOR AN INTERFACERemove the front panel and lid of control.Remove the control.There is a terminal (respectively marked with CNS) for the indoor control board.In connecting an interface, connect to the respective terminal securely with the connection harness supplied with an optional “ Interface connection kit SC-BIKN-E” and fasten the connection harness onto the indoor control box with the clamp supplied with the kit.For more details, please refer to the user’s manual of your “ Interface connection kit SC-BIKN-E”.

123

○ Uncover the wireless remote control, and mount the batteries [R03 (AAA, Micro), ×2 pieces] in the body regularly.(Fit the poles with the indication marks, ＋ & － without fail)

○ Conventionally, operate the wireless remote control by holding in your hand.


Cover

CAUTION



Battery


Do not use new and old batteries together.

2

6

5

DisconnectTIME SETUP

ACL

When two air-conditioners are installed in the same room, use this setting when the two air-conditioners are not operated with one wireless remote control. Set the wireless remote control and indoor unit.




12

3


3

Turn off the power source, and turn it on after 1 minute.Point the wireless remote control that was set according to the procedure described on the left side at the indoor unit and send a signal by pressing the ACL switch on the remote control.Since the signal is sent in about 6 seconds after the ACL switch is pressed, point the wireless remote control at the indoor unit for some time.Check that the reception buzzer sound "pip" is emitted from the indoor unit.At completion of the setting, the indoor unit emits a buzzer sound "pip". (If no reception tone is emitted, start the setting from the beginning again.)


The power source voltage is correct as the rating.No gas leaks from the joints of the service valve.Power cables and crossover wires are securely fixed to the terminal board.The screw of the lid and the terminal cover are tightened securely.





Reception

pip


Filter holderAir-cleaning filter

1. Open the air inlet panel and remove the air filters.2. Install the air-cleaning filter in the filter holders, and then install the filter holders in the air-conditioner.

• Each air-cleaning filter can be installed in the left or right filter holder.3. Install the air filters and close the inlet panel.


12

3

<How to pump down>

○ In order to protect the environment, be sure to pump down (recovery of refrigerant).○ Pump down is the method of recovering refrigerant from the indoor unit to the



Unit ON/OFF button

Indoor unit PCB

CNS terminal

Lid of control


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R410A REFRIGERANT USEDWALL TYPE AIR-CONDITIONER

INSTALLATION MANUAL FOR INDOOR UNITRLD012A001



• Install the system in full accordance with the installation manual.Incorrect installation may cause bursts, personal injury, water leaks, electric shocks and fire.

• Be sure to use only for household and residence. If this appliance is installed in inferior environment such as machine shop and etc., it can cause malfunction.

• Use the original accessories and the specified components for installation.If parts other than those prescribed by us are used, It may cause water leaks, electric shocks, fire and personal injury.

• Install the unit in a location with good support.Unsuitable installation locations can cause the unit to fall resulting in material damage and personal injury.

• Ventilate the working area well in the event of refrigerant leakage during installation.If the refrigerant comes into contact with naked flames, poisonous gas is produced.

• When installing in small rooms, take prevention measures not to exceed the density limit of refrigerant in the event of leakage, referred by the formula (accordance with ISO5149). If the density of refrigerant exceeds the limit, consult the dealer and install the ventilation system, otherwise lack of oxygen can occur, which can cause serious accident.

• After completing installation, check that no refrigerant leaks from the system.If refrigerant leaks into the room and comes into contact with an oven or other hot surface, poisonous gas is produced.

• Use the prescribed pipes, flare nuts and tools for R410A.Using existing parts (for R22 or R407C) can cause the unit failure and serious accidents due to burst of the refrigerant circuit.

• Tighten the flare nut by torque wrench with specified method.If the flare nuts were tightened with excess torque, this may cause burst and refrigerant leakage after a long period.

• The electrical installation must be carried out by the qualified electrician in accordance with “the norm for electrical work” and “national wiring regulation”, and the system must be connected to the dedicated circuit.Power source with insufficient capacity and incorrect function done by improper work can cause electric shocks and fire.

• Be sure to shut off the power before starting electrical work.Failure to shut off the power can cause electric shocks, unit failure or incorrect function of equipment.

• Be sure to use the cables conformed to safety standard and cable ampacity for power distribution work. Unconformable cables can cause electric leak, anomalous heat production or fire.

• This appliance must be connected to main power source by means of a circuit breaker or switch [fuse Model 63(21):16A, Model 71(24), 80(28), 92, 100:20A] with a contact separation of at least 3mm.


• Use the prescribed cables for electrical connection, tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks.Loose connections or cable mountings can cause anomalous heat production or fire.

• Arrange the wiring in the control box so that it cannot be pushed up further into the box. Install the service panel correctly.Incorrect installation may result in overheating and fire.

• Be sure to switch off the power source in the event of installation, inspection or servicing.If the power source is not shut off, there is a risk of electric shocks, unit failure or personal injury due to the unexpected start of fan.

• Be sure to wear protective goggles and gloves while at work.• Earth leakage breaker must be installed.

If the earth leakage breaker is not installed, it can cause electric shocks.

CAUTION

• Use the circuit breaker of correct capacity. Circuit breaker should be able to disconnect all poles under over current.Using the incorrect one could cause the system failure and fire.

• Install isolator or disconnect switch on the power source wiring in accordance with the local codes and regulations.The isolator should be locked in OFF state in accordance with EN60204-1.

• Be sure to install indoor unit properly according to instruction manual so that drainage can run off smoothly.Improper installation of indoor unit can cause dropping water into the room and damaging personal property.

• Install the drainage pipe to run off drainage securely according to the installation manual.Incorrect installation of the drainage pipe can cause dropping water into the room and damaging personal property.

• Be sure to install the drainage pipe with descending slope of 1/100 or more, and not to make traps and air-bleedings.Check if the drainage runs off securely during commissioning and ensure the space for inspection and maintenance.


• Secure a space for installation, inspection and maintenance specified in the manual.Insufficient space can result in accident such as personal injury due to falling from the installation place.

• Take care when carrying the unit by hand.

If the unit weights more than 20kg, it must be carried by two or more persons. Donot carry by the plastic straps, always use the carry handle when carrying the unitby hand. Use gloves to minimize the risk of cuts by the aluminum fins.

• Dispose of any packing materials correctly.Any remaining packing materials can cause personal injury as it contains nailsand wood. And to avoid danger of suffocation, be sure to keep the plastic wrapper away from children and to dispose after tear it up.

• For installation work, be careful not to get injured with the heat exchanger, piping flare portion or screws etc.

• Be sure to insulate the refrigerant pipes so as not to condense the ambient air moisture on them.Insufficient insulation can cause condensation, which can lead to moisture damage on the ceiling, floor, furniture and any other valuables.

• When perform the air-conditioner operation (cooling or drying operation) in which ventilator is installed in the room. In this case, using theair-conditioner in parallel with the ventilator, there is the possibility that drain water may backflow in accordance with the room lapse into the negative pressure status. Therefore, set up the opening port such as incorporate the air into the room that may appropriate to ventilation (For example; Open the door a little). In addition, just as above, so set up the opening port if the room lapse into negative pressure status due to register of the wind for the high rise apartment etc.

• Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work.If the density of refrigerant exceeds the limit in the event of refrigerant leakage in the small room, lack of oxygen can occur, which can cause serious accidents.

• Do not install the unit in the locations listed below.• Locations where carbon fiber, metal powder or any powder is floating.• Locations where any substances that can affect the unit such as sulphide

gas, chloride gas, acid and alkaline can occur.• Vehicles and ships.• Locations where cosmetic or special sprays are often used.• Locations with direct exposure of oil mist and steam such as kitchen and

machine plant.• Locations where any machines which generate high frequency harmonics

are used.• Locations with salty atmospheres such as coastlines. • Locations with heavy snow (If installed, be sure to provide base flame and

snow hood mentioned in the manual).• Locations where the unit is exposed to chimney smoke.• Locations at high altitude (more than 1000m high).• Locations with ammonic atmospheres (e.g. organic fertilizer).• Locations with calcium chloride (e.g. snow melting agent).• Locations where heat radiation from other heat source can affect the unit.• Locations without good air circulation.• Locations with any obstacles which can prevent inlet and outlet air of the unit.• Locations where short circuit of air can occur (in case of multiple units

installation).• Locations where strong air blows against the air outlet of outdoor unit.• Locations where something located above the unit could fall.It can cause remarkable decrease in performance, corrosion and damage of components, malfunction and fire.

• Do not install the indoor unit in the locations listed below (Be sure to install the indoor unit according to the installation manual for each model because each indoor unit has each limitation).• Locations with any obstacles which can prevent inlet and outlet air of the unit.• Locations where vibration can be amplified due to insufficient strength of structure.• Locations where the infrared receiver is exposed to the direct sunlight or

the strong light beam (in case of the infrared specification unit).• Locations where an equipment affected by high harmonics is placed (TV

set or radio receiver is placed within 1m).• Locations where drainage cannot run off safely.It can affect performance or function and etc.

• Do not install the unit near the location where leakage ofcombustible gases can occur.

If leaked gases accumulate around the unit, it can cause fire.• Do not install the unit where corrosive gas (such as sulfurous acid

gas etc.) or combustible gas (such as thinner and petroleum gases)can accumulate or collect, or where volatile combustible substancesare handled.Corrosive gas can cause corrosion of heat exchanger, breakage of plastic parts and etc. And combustible gas can cause fire.

• Do not use the indoor unit at the place where water splashes may occur such as in laundries.Since the indoor unit is not waterproof, it can cause electric shocks and fire.

• Do not install nor use the system close to the equipment that generates electromagnetic fields or high frequency harmonics.Equipment such as inverters, standby generators, medical high frequency equipments and telecommunication equipments can affect the system, and cause malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.

• Do not place any variables which will be damaged by getting wet under the indoor unit.When the relative humidity is higher than 80% or drainage pipe is clogged, condensation or drainage water can drop and it can cause the damage of valuables.

• Do not install the remote control at the direct sunlight.It can cause malfunction or deformation of the remote control.

• Do not use the unit for special purposes such as storing foods,cooling precision instruments and preservation of animals, plantsor art.It can cause the damage of the items.

• Do not use any materials other than a fuse with the correct rating in the location where fuses are to be used.Connecting the circuit with copper wire or other metal thread can cause unit failure and fire.


• Do not touch any refrigerant pipes with your hands when the system is in operation.During operation the refrigerant pipes become extremely hot or extremely cold depending the operating condition, and it can cause burn injury or frost injury.

• Do not wash the inside of the air-conditioner.Water leakage and permanent damage may result.

Electrical hazard exists.

• Carry out the electrical work for ground lead with care.Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults such as electric shocks due to short-circuiting.

• Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulphide gas can occur.Poisonous gases will flow into the room through drainage pipe and seriously affect the user’s health and safety. This can also cause the corrosion of the indoor unit and a resultant unit failure or refrigerant leak.

• Ensure that no air enters in the refrigerant circuit when the unit is installed and removed.If air enters in the refrigerant circuit, the pressure in the refrigerant circuit becomes too high, which can cause burst and personal injury.

• Do not process or splice the power cord, or share the socket with other power plugs.This may cause fire or electric shock due to defecting contact, defecting insulation and over-current etc.

• Do not bundle or wind or process the power cord. Do not deform the power cord by treading it.This may cause fire or heating.


• Do not run the unit with removed panels or protections.Touching rotating equipments, hot surfaces or high voltage parts can cause personal injury due to entrapment, burn or electric shocks.

• Do not perform any change of protective device itself or its setupcondition.The forced operation by short-circuiting protective device of pressure switch and temperature controller or the use of non specified component can cause fire or burst.

SAFETY PRECAUTIONS• Before installation, read the “SAFETY PRECAUTIONS” carefully and strictly

follow it during the installation work in order to protect yourself.• The precautionary items mentioned below are distinguished into two levels, and . : Wrong installation would cause serious consequences such


depending on circumstances.Both mention the important items to protect your health and safety so strictly follow them by any means.

• Be sure to confirm no anomaly on the equipment by commissioning after completedinstallation and explain the operating methods as well as the maintenance methodsof this equipment to the user according to the owner’s manual.


• Before starting the installation work, proper precautions (using suitable protective clothing, groves etc.) should be taken by qualified installer.

• Pay attention not to fall down the tools, etc. when installing the unit at the high position.




CAUTIONWARNING

CAUTION

WARNING

• This installation manual illustrates the method of installing an indoor unit.• For electrical wiring work, see instructions set out on the backside.• For outdoor unit installation and refrigerant piping, refer to page 30.

• While installing the unit, be sure to check the selection of installation place, power source specifications, usage limitation (piping length, height differences between indoor and outdoor units, power source voltage etc.) and installation spaces. • A wired remote control unit is supplied separately as an option part.

(c) Model SRK71ZR-S

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1

2

3

4

5

6

7

8

9

10

11

12

13

1

1

1

1

1

1

Q’tyLocally procured parts

Sealing plate

Sleeve

Inclination plate

Putty



Plus headed driver

Knife

Saw

Tape measure

Hammer

Spanner wrench

Torque wrench



Flaring tool set

Gas leak detector

Pipe bender


( )

( )

14.0 ~ 82.0N·m(1.4 ~ 8.2kgf·m)(


)

BEFORE INSTALLATION○ Before installation check that the power source matches the air-conditioner.

1

1

1

10

2

2

2







2

1Insulation (#486 50 x 100 t3)

Filter holders

Tapping screws (for installation board ø4 X 25mm)Wood screws(for remote control holder ø3.5 X 16mm)

1

2

3

4

5

6

7

8

9






Installation board

Sleeve (sold separately)

10 cm minimum from the ceiling


○Remove it with hand or pliers.○Remove the screw and drain hose, making it rotate.3. Insert the drain cap. 4. Connect the drain hose.

○ Insert the drain cap which was removedat procedure “2” securely using a hexagonal wrench etc.Note: Be careful that If it is not inserted




CAUTIONCompletely seal the hole on the wall with putty. Otherwise, furniture, or other, may be wetted by leaked water or dewing.

putty

putty


Piping in the left direction




Right

RearDownward

Leftrear

Left downwardLeft




[Top view]




Drilling of hole and fixture of sleeve (Locally procured parts)


Pipings

Drain hose

Top


5

ø65


Turn totighten

b b c

a


○Drill a hole with whole core drill.

○Hold the bottom of the piping and fix direction before stretching it and shaping it.


○Always tape the wiring with the piping.

180

cm m

inim

um fr

om th

e flo

or

screw

cap

(Unit : mm)

SELECTION OF INSTALLATION LOCATION

INSTALLATION OF INDOOR UNIT

Indoor unit(Install at location that meets the following conditions, after getting approval from the customer)

○ Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed.○ A solid place where the unit or the wall will not vibrate.○ A place where there will be enough space for servicing. (Where space mentioned below can be secured)○ Where wiring and the piping work will be easy to conduct.○ The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting.○ A place where it can be easily drained.○ A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.)○ Places where this unit is not affected by the high frequency equipment or electric equipment.○ Avoid installing this unit in place where there is much oil mist.○ Places where there is no electric equipment or household under the installing unit.○ Install the indoor unit on the wall where the height from the floor to the bottom of the unit is more than 1.8m.

Wireless remote control○ A place where the air-conditioner can be received the signal surely during operating the wireless remote control.○ Places where there is no affected by the TV and radio etc.○ Do not place where exposed to direct sunlight or near heat devices such as a stove.

Installation of Installation board

Fixing on concrete wallUse of nut anchor

Bolt(M6 12)

Standardhole

Installationsample

Indoor unit

Obstacle such as curtain

Be sure that the flap of outlet should not touch any obstacles.

for service

Indoor unit

768157

48.3

240

6.732

2.4

214.5 214.5883 157

10

53.577

47

15050

1510

0

Piping for Liquid 780

Installation board

60

240

43

470 363.5363.5568.5 568.5

Spacefor serviceSpace

for se

rvice

Spac

efor

servi

ceSp

ace

and nut anchorFor bolt anchor

Piping hole (ø65)

Piping hole (ø65)

Drain hose 759 (ø16)

Piping for Gas 715 (SRK24/71/80/92/100, DXK24/28/32)709 (SRK63, DXK21)

47

○Adjustment of the installation board in the horizontal direction is to be conducted with eight screws in a temporary tightened state.


13cm



Wood screws

Look for the inside wall structures (Intermediate support or pillar and firmly install the unit after level surface has been checked.)

768410

Mating mark forlevel surface

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○ Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor.○ When extended drain hose is present inside the room, insulate it securely with heat insulator available in the market.

CAUTION

Wall

Gutter


Drainage

Higher than specified Wavy

Installation Steps • How to remove the indoor unit from the installation board


Push up at the marked portion of the indoor unit base lower latch, and slightly pull it toward you. (both right and left hand sides) (The indoor unit base lower latch can be removed from the installation board)Push up the indoor unit upward so that it can be removed from installation board.

latch

Installation board

Indoor unit base latch

Wall


2

1

2

1

Gently push the lower part to secure the unit.

Pass the pipe through the hole in the wall, and hook the upper part of the indoor unit to the installation board.


The drain hose tip is in water.

The gap to the ground is 5 cm or less.

The drain hose tip is in the gutter.

Odor from the gutter

Installation board

Indoor unit

Latch (2 locations)


○ To open, pull the panel at both ends of lower part and release latches, then pull up the panel until you feel resistance.

(The panel stops at approx. 60° open position)○ To close, hold the panel at both ends of lower part to

lower downward and push it slightly until the latch works.



To remove / To install

Approx. 80°

• Flaring work

Measurement B




Refrigerant piping

Drain hoseWood screwClamp





(Do not turn) PressRemove

A

90

0.5˚

Dimension A CAUTION


Indoor

CAUTION

Do not apply excess torque to the flared nuts. Otherwise, the flared nuts may crack.



Indoor

(Do not turn)

• Cover the indoor unit’s flare-connected joints, after they are checked for a gas leak, with an indoor unit heat insulating material and then wrap them with a tape with an attached insulation pad placed over the heat insulating material’s slit area.

Cover the coupling with insulator and then cover it with tapes.Vinyl tape Use an attached insulation pad for heat insulation.


Liquid side Gas side

Cover the exterior portion with outer tape and shape the piping to match with the contours of the route that piping will take.Also fix the wiring and pipings to the wall with clamps.


Use a flare tool designed for R410A or a conventional flare tool.Note that measurement B (protrusion from the flaring block) will vary depending on the type of a flare tool in use.If a conventional flare tool is used, use a copper pipe gauge or a similar instrument to check protrusion so that you can keep measurement B to a correct value.



ø6.35

ø15.88

0.0 - 0.5

0.0 - 0.5

1.0 - 1.5

1.0 - 1.5

1.5 - 2.0

2.0 - 2.5ø12.7 0.0 - 0.5 1.0 - 1.5 2.0 - 2.5ø9.52 0.0 - 0.5 1.0 - 1.5 1.5 - 2.0

Measurement B (mm)


How to remove and install the front panelLatch

○ Removing

○ InstallingRemove the air filter.Cover the unit with the front panel.Tighten the 8 screws to fix the front panel.Install the air filter. Install the air inlet panel.

Front panel

Air inlet panelAir filter

Screw

54

3

21

321

Remove the air inlet panel.Remove the 8 screws fixing to the front panel.Remove the 5 latches in the upper section of the front panel and then remove the front panel from the unit.

If FDC71VNP is connected, use reducer at gas side of indoor unit to change the pipe size from ø15.88 to ø12.7. (Reducer is attached in the outdoor unit accessory)

Liquid side ø6.35 : 9.1 (mm) ø9.52 : 13.2 (mm)Gas side ø9.52 : 13.2 (mm) ø12.7 : 16.6 (mm) ø15.88 : 19.7 (mm)

Liquid side (ø6.35) : 14.0 - 18.0 N·m (1.4 - 1.8 kgf·m) (ø9.52) : 34.0 - 42.0 N·m (3.4 - 4.2 kgf·m)Gas side (ø9.52) : 34.0 - 42.0 N·m (3.4 - 4.2 kgf·m) (ø12.7) : 49.0 - 61.0 N·m (4.9 - 6.1 kgf·m) (ø15.88) : 68.0 - 82.0 N·m (6.8 - 8.2 kgf·m)

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○ Uncover the wireless remote control, and mount the batteries [R03 (AAA, Micro),×2 pieces] in the body regularly.(Fit the poles with the indication marks, + & − without fail)

○ Conventionally, operate the wireless remote controlby holding in your hand.


Cover



Battery


2

6

5

Receptionpip

Disconnect

TIME SETUP ACL

When two air-conditioners are installed in the same room, use this setting when the two air-conditioners are not operated with onewireless remote control. Set the wireless remote control and indoor unit.


Setting the wireless remote controlPull out the cover and take out batteries.Disconnect the switching line next to the battery withwire cutters.


1

2

3


2

3


The power source voltage is correct as the rating.No gas leaks from the joints of the service valve.Power cables and crossover wires are securely fixed to the terminal board.



The screw of the lid is tightened securely.Service valve is fully open.The pipe joints for indoor and outdoor pipes have been insulated.


Turn off the power source, and turn it on after 1 minute.Point the wireless remote control that was set according to the procedure described on the left side at the indoor unit and send a signal by pressing the ACL switch on the wireless remote control. Since the signal is sent in about 6 seconds after the ACL switc h is pressed,point the wireless remote control at the indoor unit for some time.Check that the reception buzzer sound "pip" is emitted from theindoor unit.At completion of the setting, the indoor unit emits a buzzer sound"pip". (If no reception tone is emitted, start the setting from the beginning again.)

Open the air inlet panel.Remove the lid.Remove the wiring clamp.Connect the connecting wire securely to the terminal block.1) Connect the connection wire securely to the terminal



Fix the connecting wire by wiring clamp.Attach the lid.Close the air inlet panel.

ELECTRICAL WIRING WORKPreparation of indoor unit


765

4321 Use cables for interconnection wiring to avoid loosening of the wires.

CENELEC code for cables Required field cables.


Terminal block

Wiring Clamp

Lid


The screw of the lid is tightened securely

Connecting wire• Pass the connecting wire through the path from

the bottom of the control box to the front part as shown in the illustration.

• Forced cooling operationTurn off power source. Turn on power source again after a while. Then, press the ON/OFF button continuously for at least 5 seconds. (The operation will start.)

TERMINAL CONNECTION FOR AN INTERFACERemove the air inlet panel, lid and front panel.Remove the control cover. (Remove the screw.)There is a terminal (respectively marked with CNS) for the indoor control board.In connecting an interface, connect to the respective terminal securely with the connection harness supplied with an optional “ Interface connection kit SC-BIKN-E” and fasten the connection harness onto the indoor control box with the clamp supplied with the kit.For more details, refer to the user’s manual of your “ Interface connection kit SC-BIKN-E”.

3

21

321


<How to pump down>

○ In order to protect the environment, be sure to pump down (recovery of refrigerant).○ Pump down is the method of recovering refrigerant from the indoor unit to the outdoor

unit when the pipes are removed from the unit.

HOW TO RELOCATE OR DISPOSE OF THE UNITIndoor unit PCB

screw

Unit ON/OFF button

Control cover

CNS terminal

Installing the air-cleaning filters① Open the air inlet panel and remove the air filters.② Install the air-cleaning filter in the filter holders, and then install the filter

holders in the air-conditioner. • Each air-cleaning filter can be installed in the left or right filter holder.

③ Install the air filters and close the inlet panel.

Filter holder

Air-cleaningfilter

○ In case of faulty wiring connection, indoor unit does not operate. Then, run lamp turns on and timer lamp blinks.

○ Do not use new and old batteries together.

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R410A REFRIGERANT USEDFLOOR TYPE AIR CONDITIONER

INSTALLATION MANUAL FOR INDOOR UNIT

RFB012A007

WARNINGInstallation must be carried out by the qualified installer.If you install the system by yourself, it may cause serious trouble such as water leaks, electric shocks, fire and personal injury, as a result of a system malfunction. Do not carry out the installation and maintenance work except the by qualified installer.Install the system in full accordance with the installation manual.Incorrect installation may cause bursts, personal injury, water leaks, electric shocks and fire.Be sure to use only for household and residence.If this appliance is installed in inferior environment such as machine shop and etc., it can cause malfunction. Use the original accessories and the specified components for installation.If parts other than those prescribed by us are used, It may cause water leaks, electric shocks, fire and personal injury.Install the unit in a location with good support.Unsuitable installation locations can cause the unit to fall and cause material damage and personal injury.Ventilate the working area well in the event of refrigerant leakage during installation.If the refrigerant comes into contact with naked flames, poisonous gas is produced.When installing in small rooms, take prevention measures not to exceed the density limit of refrigerant in the event of leakage, referred by the formula (accordance with ISO5149). If the density of refrigerant exceeds the limit, please consult the dealer and install the ventilation system, otherwise lack of oxygen can occur, which can cause serious accident. After completed installation, check that no refrigerant leaks fromthe system.If refrigerant leaks into the room and comes into contact with an oven or other hot surface, poisonous gas is produced.Use the prescribed pipes, flare nuts and tools for R410A.Using existing parts (for R22 or R407C) can cause the unit failure and serious accidents due to burst of the refrigerant circuit.

Tighten the flare nut by torque wrench with specified method.If the flare nut were tightened with excess torque, this may cause burst and refrigerant leakage after a long period.The electrical installation must be carried out by the qualified electrician in accordance with “the norm for electrical work” and “national wiring regulation”, and the system must be connected to the dedicated circuit.Power source with insufficient capacity and incorrect function done by improper work can cause electric shocks and fire.Be sure to shut off the power before starting electrical work.Failure to shut off the power can cause electric shocks, unit failure or incorrect function of equipment.Be sure to use the cables conformed to safety standard and cable ampacity for power distribution work. Unconformable cables can cause electric leak, anomalous heat productionor fire.This appliance must be connected to main power source by means of a circuit breaker or switch (fuse:16A) with a contact separation of at least 3mm. When plugging this appliance, a plug conforming to the norm IEC60884-1 must be used.Use the prescribed cables for electrical connection, tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks.Loose connections or cable mountings can cause anomalous heat production or fire.Arrange the wiring in the control box so that it cannot be pushed up further into the box. Install the service panel correctly.Incorrect installation may result in overheating and fire.Be sure to switch off the power source in the event of installation, inspection or servicing.If the power source is not shut off, there is a risk of electric shocks, unit failure or personal injury due to the unexpected start of fan.Be sure to wear protective goggles and gloves while at work.Earth leakage breaker must be installed.If the earth leakage breaker is not installed, it can cause electric shocks.

CAUTION

Use the circuit breaker of correct capacity. Circuit breaker should be the one that disconnect all poles under over current.Using the incorrect one could cause the system failure and fire.Install isolator or disconnect switch on the power source wiring in accordance with the local codes and regulations.The isolator should be locked in OFF state in accordance with EN60204-1.Be sure to install indoor unit properly according to the installation manual in order to run off the drainage smoothly.Improper installation of indoor unit can cause dropping water into the roomand damaging personal property.Install the drainage pipe to run off drainage securely according to the installation manual.Incorrect installation of the drainage pipe can cause dropping water into the room and damaging personal property.Be sure to install the drainage pipe with descending slope of 1/100 or more, and not to make traps and air-bleedings.Check if the drainage runs off securely during commissioning and ensurethe space for inspection and maintenance. Secure a space for installation, inspection and maintenance specified in the manual.Insufficient space can result in accident such as personal injury due to

falling from the installation place.For installation work, be careful not to get injured with the heat exchanger, piping flare portion or screws etc.Be sure to insulate the refrigerant pipes so as not to condense the ambient air moisture on them.Insufficient insulation can cause condensation, which can lead to moisturedamage on the ceiling, floor, furniture and any other valuables.When perform the air-conditioner operation (cooling or drying opera-tion) in which ventilator is installed in the room. In this case, using theair-conditioner in parallel with the ventilator, there is the possibilitythat drain water may backflow in accordance with the room lapse intothe negative pressure status. Therefore, set up the opening port suchas incorporate the air into the room that may appropriate to ventila-tion (For example; Open the door a little). In addition, just as above, soset up the opening port if the room lapse into negative pressure statusdue to register of the wind for the high rise apartment etc.Be sure to perform air tightness test by pressurizing with nitrogengas after completed refrigerant piping work.If the density of refrigerant exceeds the limit in the event of refrigerantleakage in the small room, lack of oxygen can occur, which can cause serious accidents.

Do not install the unit in the locations listed below.Locations where carbon fiber, metal powder or any powder is floating.Locations where any substances that can affect the unit such as sulphide gas, chloride gas, acid and alkaline can occur.Vehicles and ships.Locations where cosmetic or special sprays are often used.Locations with direct exposure of oil mist and steam such as kitchen and machine plant.Locations where any machines which generate high frequency harmonics are used.Locations with salty atmospheres such as coastlines. Locations with heavy snow (If installed, be sure to provide base flame and snow hood mentioned in the manual).Locations where the unit is exposed to chimney smoke.Locations at high altitude (more than 1000m high).Locations with ammonic atmospheres.Locations where heat radiation from other heat source can affect the unit.Locations without good air circulation.Locations with any obstacles which can prevent inlet and outlet air of the unit.Locations where short circuit of air can occur (in case of multiple units installation).Locations where strong air blows against the air outlet of outdoor unit.Locations where something located above the unit could fall.

It can cause remarkable decrease in performance, corrosion and damage of components, malfunction and fire.Do not install the indoor unit in the locations listed below (Be sureto install the indoor unit according to the installation manual for each model because each indoor unit has each limitation).

Locations with any obstacles which can prevent inlet and outlet air of the unit.Locations where vibration can be amplified due to insufficient strength of structure.Locations where the infrared receiver is exposed to the direct sunlight or the strong light beam (in case of the infrared specification unit).Locations where an equipment affected by high harmonics is placed (TV set or radio receiver is placed within 1m).Locations where drainage cannot run off safely.

It can affect performance or function and etc. Do not install the unit near the location where leakage of combustible gases can occur.

If leaked gases accumulate around the unit, it can cause fire.Do not install the unit where corrosive gas (such as sulfurous acid gas etc.) or combustible gas (such as thinner and petroleum gases) can accumulate or collect, or where volatile combustible substances are handled.Corrosive gas can cause corrosion of heat exchanger, breakage of plastic parts and etc. And combustible gas can cause fire.Do not use the indoor unit at the place where water splashes may occur such as in laundries.Since the indoor unit is not waterproof, it can cause electric shocks and fire.Do not install nor use the system close to the equipment that generates electromagnetic fields or high frequency harmonics.Equipment such as inverters, standby generators, medical high frequencyequipments and telecommunication equipments can affect the system, and cause malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.Do not place any variables which will be damaged by getting wet under the indoor unit.When the relative humidity is higher than 80% or drainage pipe is clogged, condensation or drainage water can drop and it can cause the damage of valuables.Do not install the wireless remote control at the direct sunlight.It can cause malfunction or deformation of the wireless remote control.Do not use the unit for special purposes such as storing foods, cooling precision instruments and preservation of animals, plants or art.It can cause the damage of the items.Do not use any materials other than a fuse with the correct rating in the location where fuses are to be used.Connecting the circuit with copper wire or other metal thread can cause unit failure and fire.Do not touch any buttons with wet hands.It can cause electric shocks.Do not touch any refrigerant pipes with your hands when the system is in operation.During operation the refrigerant pipes become extremely hot or extremelycold depending the operating condition, and it can cause burn injury or frost injury.

Carry out the electrical work for ground lead with care.Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults such as electric shocks due to short-circuiting.

Do not put the drainage pipe directly into drainage channels wherepoisonous gases such as sulphide gas can occur.Poisonous gases will flow into the room through drainage pipe and seriously affect the user’s health and safety. This can also cause the corrosion of the indoor unit and a resultant unit failure or refrigerant leak.Ensure that no air enters in the refrigerant circuit when the unit is installed and removed.If air enters in the refrigerant circuit, the pressure in the refrigerant circuitbecomes too high, which can cause burst and personal injury.

Do not processing, splice the power cord, or share a socket with other power plugs.This may cause fire or electric shock due to defecting contact, defecting insulation and over-current etc.Do not bundling, winding or processing for the power cord. Or, do not deforming the power plug due to tread it.This may cause fire or heating.

Do not vent R410A into the atmosphere : R410A is a fluorinated greenhouse gas, covered by the Kyoto Protocol with GrovalWarming Potential (GWP)=1975.Do not run the unit with removed panels or protections.Touching rotating equipments, hot surfaces or high voltage parts can cause personal injury due to entrapment, burn or electric shocks.

Do not perform any change of protective device itself or its setup condition.The forced operation by short-circuiting protective device of pressureswitch and temperature controller or the use of non specified component can cause fire or burst.

WARNING

SAFETY PRECAUTIONSRead the “SAFETY PRECAUTIONS” carefully first of all and strictly follow it during the installation work in order to protect yourself.The precautionary items mentioned below are distinguished into two levels,

and . : Wrong installation would cause serious consequences such


depending on circumstances.Both mentions the important items to protect your health and safety so strictly follow them by any means.Be sure to confirm no anomaly on the equipment by commissioning after com-pleted installation and explain the operating methods as well as the maintenancemethods of this equipment to the user according to the owner’s manual.

Keep the installation manual together with owner’s manual at a place whereany user can read at any time. Moreover if necessary, ask to hand them to a new user.For installing qualified personnel, take precautions in respect to themselves by using suitable protective clothing, groves, etc., and then perform the installation works.Please pay attention not to fall down the tools, etc. when installing the unit at the high position.If unusual noise can be heard during operation, consult the dealer.The meanings of “Marks” used here are shown as follows:



CAUTIONWARNING

CAUTION

WARNING

This installation manual illustrates the method of installing an indoor unit.For electrical wiring work, please see instructions set out on the backside.For outdoor unit installation and refrigerant piping, please refer to page 30.

A wired remote control unit is supplied separately as an option part.When install the unit, be sure to check whether the selection of installation place, power source specifications, usage limitation (piping length, height differences between indoor and outdoor units, power source voltage and etc.) and installation spaces.

(2) Floor standing type (SRF)

Models SRF25ZMX-S, 35ZMX-S, 50ZMX-S

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1

2

3

4

5

6

7

8

9

10

11

12

13

1

1

1

1

1

1

Q’tyOption parts

Sealing plate

Sleeve

Inclination plate

Putty



Plus headed driver

Knife

Saw

Tape measure

Hammer

Spanner wrench

Torque wrench



Flaring tool set

Gas leak detector

Pipe bender


( )

( )

14.0 ~ 61.0N·m(1.4 ~ 6.1kgf·m)(


)

BEFORE INSTALLATION

1

1

1

9

2

2

2

2

1

2








Pipe cover (200mm)


Wood screws(for remote control switch holder ø3.5 X 16mm)

1

2

3

4

5

6

7

8

9

10 Band


Before installation check that the power source matches the air-conditioner.

Right

Rear

Downward Left rear

Left downward

Left 60

15

60

6022.785.3

100

55

157.276.3

For Right or Left rear piping For Right or Left piping

Right/Leftpiping

For Right or Left bottom piping

Left bottom piping

Right bottom piping



Indoor unit




In case of piping in the right rear directionWhen drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use pipe hole sleeve sold separately.

Taping of the exteriorTop

Thicknese of the wall + 1.5cm

5

ø65


Turn totighten

b b c

a

Open and detachment of the air inlet panel


How to remove the front panel

Indoor unit piping direction

CAUTION

Drainage

The drain hosetip is in water

Higher thanspecified

Wavy The gap to the groundis 5 cm or less

The drain hose tipis in the gutter

Odor fromthe gutter

Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed.A solid place where the unit or the wall will not vibrate. A place where there will be enough space for servicing. (Where space mentioned below can be secured)Where wiring and the piping work will be easy to conduct. The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting. A place where it can be easily drained. A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.) Places where this unit is not affected by the high frequency equipment or electric equipment.Avoid installing this unit in place where there is much oil mist. Places where there is no electric equipment or household under the installing unit.Install the indoor unit on flat wall.

A place where the air-conditioner can be received the signal surely during operating the wireless remote control.Places where there is no affected by the TV and radio etc.Do not place where exposed to direct sunlight or near heat devices such as a stove.

To open, pull the panel at both ends of upper part and release latches, and undo the strings.Then remove the panel.

When removing the air-inlet panel, be careful not to drop it on your feet.

CAUTION

Remove the air inlet panel.Remove the 5 set screws.Remove the 3 latches in the upper section.If the latches are difficult to remove, push the latch portion out using a screwdriver, for example.Move the lower part of the panel forward and remove the 6 latches in the under section.

123

4



Wood screws

Installation board


5 cm + Service space (30cm)

from the wall

7 cm minimum from the ceiling

15 cm or below from the floor


CAUTION

putty

putty


Completely seal the hole on the wall with putty.Otherwise, furniture, or other, may be wetted byleaked water or dewing.

CAUTIONBe careful not to stress the connecting refrigerantpipse. (Do not pull with a force of larger than 5 kgf.) If improperly installed, it may cause abnormal noise and vibration.

Latch

Latch

The screw of the lid is tightened securely.

Drill a hole with whole core drill. In case of rear piping draw out, cut off the lower and the right side portions of the sleeve collar.

18.5 91.5

45

65

65 65

470

80

65

45

Right rearpiping

Left rearpiping


Tape only the portion that goes through the wall.Always tape the wiring with the piping.

Arrange the drain hosein a downward angle.Avoid the following drain piping. Pour water to the drain pan located under the heat exchanger, and ensure that

the water is discharged outdoor.When the extended drain hose is indoor, securely insulate it with a heat insulator available in the market.


Go through all installation steps and check if the dralnage is all right. Otherwise water leak may occur.

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(860)

103.5

726

30.5

25.5

585 5

585

5 95

( 600

)

30.5

(238)

198

185

Installation of Installation board

Fixing on concrete wallUse of nut anchor

Installationboard

Bolt(M6 12)

Standard hole


Floor installation Wall installation Tapping screw(860)

103.5

156.572658

5 558

559

5(6

00)

30.5

83.5

(238)

CAUTION • During the installation, do not lean on the control box or the display, as they may be damaged.• Install the indoor unit on flat wall. If improperly installed, it may cause abnormal noise and vibration. (Distortion on the wall shall be no larger than 3 mm.)

Secure using upper 2 screws for floor installations.If possible, also attach two lower screws.

At first secure the installation board using 5 screws and the indoor unit using 2 screws.

Look for the inside wall structures (Intersediats support or pillar and finally install the unit after level surface has been checked.)

When practicing the half-console, make sure to fix the unit securely.Otherwise, it could fall.

Adjustment of the installation board in the horizontal direction is to be conducted with five screws in a temporary tightened state.Adjust so the board will be level by turning the board with the standard hole as the center.

If there is an obstacle such as a cable cover, cut off the hatched part before installation.

Refrigerantpipe

Slit

Refrigerantpipe

Slit

Tape

Refrigerantpipe

155

45

105

130140


Indoor (Do not turn)

PressRemove

90±

0.5˚ Dimension A (mm)

Liquid side ø6.35 : 9.1 Gas side ø9.52 : 13.2

ø12.7 : 16.6

Measurement B


Connection Finishing work and fixing

Insulation of the connection portion

Indoor

Liquid sideGas side

(Do not turn)Connection wiring, Earth wiring

Outer tape

Refrigerant piping


Clamp

Install the removed flared nuts to the pipes to be connected, then flared the pipes.

Remove the flared nuts. (on both liquid and gas sides)


CAUTION

• Flaring workCopper pipe

diameterClutch type flaretool for R410A


ø6.35

ø9.52

ø12.7

0.0 - 0.5

0.0 - 0.5

0.0 - 0.5

1.0 - 1.5

1.0 - 1.5

1.0 - 1.5

1.5 - 2.0

1.5 - 2.0

2.0 - 2.5

Measurement B (mm)


Use a flare tool designed for R410A or a conventional flare tool.Please note that measurement B (protrusion from the flaring block)will vary depending on the type of a flare tool in use.If a conventional flare tool is used, please use a copper pipe gaugeor a similar instrument to check protrusion so that you can keepmeasurement B to a correct value.


Connect the pipes on both liquid and gas sides.Tighten the nuts to the following torque.Liquid side (ø6.35) : 14.0 - 18.0 N·m (1.4 - 1.8 kgf·m)Gas side (ø9.52) : 34.0 - 42.0 N·m (3.4 - 4.2 kgf·m)

(ø12.7) : 49.0 - 61.0 N·m (4.9 - 6.1 kgf·m)

CAUTION Do not apply excess torque to the flared nuts. Otherwise, the flared nuts may check depending.

CAUTION Be careful not to stress the connecting refrigerantpipes. (Do not pull with a force of larger than 5 kgf.)

Cover the exterior portion with outer tape and shape the piping so it will match the contours of the route that the piping to take.Also fix the wiring and pipings to the wall with clamps.


Terminal block

Sensor

Fixing screw

Clamp

Wiring holder

Remove the fixing screw of clamp.Connect the connecting wire securely to the terminal block.1) Connect the connection wire securely to the terminal



Fix the connecting wire by wiring clamp.Pass the connecting wire through the wiring holder.

12

34

H05RNR4G1.5 (example) or 245IEC57H05RNR

4 or 5G

1.5

Harmonized cable type300/500 voltsNatural-and/or synth, rubber wire insulationPolychloroprene rubber conductors insulationStranded coreNumber of conductorsOne conductor of the cable is the earth conductor(yellow/green)Section of copper wire (mm2)



CAUTION• During installation, do not lean on the control box or the

display, as they may be damaged.• Pass the connecting wire securely through the wiring holder.

If it passeson the sensor, it may not detect suction temperature and/or humidity.

• Earth wire shall be Yellow/Green (Y/G) in color and longer than other AC wiresfor safety reason.

• Cover the indoor unit’s flare-connected joints, after they are checked for a gas leak, with an indoor unit heat insulating material and then wrap them with a tape with an attached pipe cover placed over the heat insulating material’s slit area.

Use cables for interconnection wiring to avoid loosening of the wires. CENELEC code for cables Required field cables.

Pass the refrigerant pipe through the piping hole to indoor side. Arrange the pipes accordingto the direction of piping.

Cover the coupling with insulator and then cover it with tapes.Use an attached pipe cover for heat insulation.


Addband10

Pipe cover9

CAUTIONIf heat insulation is insufficient, water leakage may occur. In addition, the room temperature sensor may give a false alert due to heat radiation fromthe pipes.

A

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• Forced cooling operationTurn on a power source again after a while after turn off a power source.Then press continually the ON/OFF button 5 seconds or more.Conventionally, operate the

wireless remote control byholding in your hand.Avoid installing it on a claywall etc.


CAUTIONDo not use new and old batteries together. Wood screws

ø3.5 X 16

Wireless remote control2

5

Cover

Battery6


The power source voltage is correct as the rating.No gas leaks from the joints of the service valve.Power cables and crossover wires are securely fixed to the terminal board.The screw of the lid is tightened securely.





Connect charge hose to service port of outdoor unit.Liquid side : Close the service valve with hexagon wrench key.Gas side : Fully open the service valveCarry out cooling operation. (If indoor temperature is low,operate forced cooling operation.)After low pressure gauge become 0.01MPa, stop cooling operation and close the service valve (gas side).

12

3

<How to pump down>


Unit ON/OFF button

In order to protect the environment, be sure to pump down (recovery of refrigerant).Pump down is the method of recovering refrigerant from theindoor unit to the outdoor unit when the pipes are removedfrom the unit.

Uncover the wireless remote control, andmount the batteries [R03 (AAA, Micro), ×2pieces] in the body regularly.(Fit the poles with the indicationmarks, ＋ & － without fail)

CONCERNING TERMINALCONNECTION FOR AN INTERFACE

Remove the front panel and lid of control.There is a terminal (respectively marked with CNS) for the indoor control board.In connecting an interface, connect to the respective terminal securely with the connection harness supplied with an optional “Interface connection kit SC-BIKN-E” and fasten the connection harness onto the indoor control box with the clamp supplied with the kit.For more details, please refer to the user’s manual of your “Interfaceconnection kit SC-BIKN-E”.

12

Install the indoor unit according to the following instructions.Secure the upper, right, and left spaces according to the right figure.Do not let the horizontal bar obstruct wind from blowing out upward/downward or reception from the wirelee remote control.The lattice size should be 70 % or greater of the open rate.Cut the jumper cable (JP173) on the indoor circuit board to control the blow-out angle.

1

2

34

Incorrect installation may cause problems such as non-cooling, non-warming, and condensation water leaking into the room.

CAUTION

Concealed installation

5cm or more 5cm or more

7cm or more

2 - 3cm

JP171JP170

JP172

JP173

COOL ONLY

AIR FLOW

SWITCH

CUSTOM

AUTORESTARTREMOTE/

Cut

Disconnect

When two air-conditioners are installed in the same room, use this setting when the two air-conditioners are not operated with one wireless remote control. Set the wireless remote control INSTALLING TWO AIR-CONDITIONERS IN THE SAME ROOM

Setting the wireless remote controlPull out the cover and take out batteries.Disconnect the switching line next to the battery with wire cutters.Insert batteries. Close the cover.

12

3


Turn off the power source, and turn it on after 1 minute.Point the wireless remote control that was set according to theprocedure described on the left side at the indoor unit and send a signal by pressing the ACL switch on the wireless remote control.Since the signal is sent in about 6 seconds after the ACL switch is pressed, point the wireless remote control at the indoor unit for some time.

3 Check that the reception buzzer sound “pip” is emitted from theindoor unit.At completion of the setting, the indoor unit emits a buzzer sound “pip”. (If no reception tone is emitted, start the settingfrom the beginning again.)

FittingDo remove the air filter.Cover the body with the front panel.Fit the 6 latches in the lower section, then 3 latches in the upper section.Tighten the 5 set screws.Fit the air filter.Fit the air inlet panel.

123

456

To close, attach the panel after pulling the strings, hold the panel at both ends of upper part to lower downward and push it slightly until the latch works.

How to fit the front panel Close and attachment of the air inler panelLatch

Latch

1. Open the air inlet panel and remove the air filters.

2. Install the air-cleaning filter in the filter holders, and then install the filter holders in the air-conditioner.• Each air-cleaning filter can be

installed in the upper or lower filter holder.

3. Install the air filters and close the inlet panel.

When installing an air-cleaning filter in the indoor unit, be carefulnot to injure your hand with the heat exchanger.

CAUTION

Air-cleaning filter7 Filter holder8


Reception

pip

TIME SETUP ACL

and indoor unit.

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R410A REFRIGERANT USEDFOR MODEL SRR SERIES

INSTALLATION MANUAL FOR INDOOR UNITRJJ012A002



• Install the system in full accordance with the installation manual.Incorrect installation may cause bursts, personal injury, water leaks, electric shocks and fire.

• Be sure to use only for household and residence. If this appliance is installed in inferior environment such as machine shop and etc., it can cause malfunction.

• Use the original accessories and the specified components for installation.If parts other than those prescribed by us are used, It may cause water leaks, electric shocks, fire and personal injury.

• Install the unit in a location with good support.Unsuitable installation locations can cause the unit to fall resulting in material damage and personal injury.

• Ventilate the working area well in the event of refrigerant leakage during installation.If the refrigerant comes into contact with naked flames, poisonous gas is produced.

• When installing in small rooms, take prevention measures not to exceed the density limit of refrigerant in the event of leakage, referred by the formula (accordance with ISO5149). If the density of refrigerant exceeds the limit, consult the dealer and install the ventilation system, otherwise lack of oxygen can occur, which can cause serious accident.

• After completing installation, check that no refrigerant leaks from the system.If refrigerant leaks into the room and comes into contact with an oven or other hot surface, poisonous gas is produced.

• Use the prescribed pipes, flare nuts and tools for R410A.Using existing parts (for R22 or R407C) can cause the unit failure and serious accidents due to burst of the refrigerant circuit.

• Tighten the flare nut by torque wrench with specified method.If the flare nuts were tightened with excess torque, this may cause burst and refrigerant leakage after a long period.

• The electrical installation must be carried out by the qualified electrician in accordance with “the norm for electrical work” and “national wiring regulation”, and the system must be connected to the dedicated circuit.Power source with insufficient capacity and incorrect function done by improper work can cause electric shocks and fire.

• Be sure to shut off the power before starting electrical work.Failure to shut off the power can cause electric shocks, unit failure or incorrect function of equipment.

• Be sure to use the cables conformed to safety standard and cable ampacity for power distribution work. Unconformable cables can cause electric leak, anomalous heat production or fire.



• Use the prescribed cables for electrical connection, tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks.Loose connections or cable mountings can cause anomalous heat production or fire.

• Arrange the wiring in the control box so that it cannot be pushed up further into the box. Install the service panel correctly.Incorrect installation may result in overheating and fire.

• Be sure to switch off the power source in the event of installation, inspection or servicing.If the power source is not shut off, there is a risk of electric shocks, unit failure or personal injury due to the unexpected start of fan.

• Be sure to wear protective goggles and gloves while at work.• Earth leakage breaker must be installed.


CAUTION

• Use the circuit breaker of correct capacity. Circuit breaker should be able to disconnect all poles under over current.Using the incorrect one could cause the system failure and fire.

• Install isolator or disconnect switch on the power source wiring in accordance with the local codes and regulations.The isolator should be locked in OFF state in accordance with EN60204-1.

• Be sure to install indoor unit properly according to instruction manual so that drainage can run off smoothly.Improper installation of indoor unit can cause dropping water into the room and damaging personal property.

• Install the drainage pipe to run off drainage securely according to the installation manual.Incorrect installation of the drainage pipe can cause dropping water into the room and damaging personal property.

• Be sure to install the drainage pipe with descending slope of 1/100 or more, and not to make traps and air-bleedings.Check if the drainage runs off securely during commissioning and ensure the space for inspection and maintenance.


• Secure a space for installation, inspection and maintenance specified in the manual.Insufficient space can result in accident such as personal injury due to falling from the installation place.

• Take care when carrying the unit by hand.If the unit weights more than 20kg, it must be carried by two or more persons. Do not carry by the plastic straps, always use the carry handle

when carrying the unit by hand. Use gloves to minimize the risk of cuts by the aluminum fins.

• Dispose of any packing materials correctly.Any remaining packing materials can cause personal injury as it contains nails and wood. And to avoid danger of suffocation, be sure to keep the plastic wrapper away from children and to dispose after tear it up.

• For installation work, be careful not to get injured with the heat exchanger, piping flare portion or screws etc.

• Be sure to insulate the refrigerant pipes so as not to condense the ambient air moisture on them.Insufficient insulation can cause condensation, which can lead to moisture damage on the ceiling, floor, furniture and any other valuables.


• Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work.If the density of refrigerant exceeds the limit in the event of refrigerant leakage in the small room, lack of oxygen can occur, which can cause serious accidents.

• Do not install the unit in the locations listed below.• Locations where carbon fiber, metal powder or any powder is floating.• Locations where any substances that can affect the unit such as sulphide

gas, chloride gas, acid and alkaline can occur.• Vehicles and ships.• Locations where cosmetic or special sprays are often used.• Locations with direct exposure of oil mist and steam such as kitchen and

machine plant.• Locations where any machines which generate high frequency harmonics

are used.• Locations with salty atmospheres such as coastlines. • Locations with heavy snow (If installed, be sure to provide base flame and

snow hood mentioned in the manual).• Locations where the unit is exposed to chimney smoke.• Locations at high altitude (more than 1000m high).• Locations with ammonic atmospheres (e.g. organic fertilizer).• Locations with calcium chloride (e.g. snow melting agent).• Locations where heat radiation from other heat source can affect the unit.• Locations without good air circulation.• Locations with any obstacles which can prevent inlet and outlet air of the unit.• Locations where short circuit of air can occur (in case of multiple units

installation).• Locations where strong air blows against the air outlet of outdoor unit.• Locations where something located above the unit could fall.It can cause remarkable decrease in performance, corrosion and damage of components, malfunction and fire.

• Do not install the indoor unit in the locations listed below (Be sure to install the indoor unit according to the installation manual for each model because each indoor unit has each limitation).• Locations with any obstacles which can prevent inlet and outlet air of the

unit.• Locations where vibration can be amplified due to insufficient strength of

structure.• Locations where the infrared receiver is exposed to the direct sunlight or

the strong light beam (in case of the infrared specification unit).• Locations where an equipment affected by high harmonics is placed (TV

set or radio receiver is placed within 1m).• Locations where drainage cannot run off safely.It can affect performance or function and etc.

• Do not install the unit near the location where leakage ofcombustible gases can occur.If leaked gases accumulate around the unit, it can cause fire.

• Do not install the unit where corrosive gas (such as sulfurous acid gas etc.) or combustible gas (such as thinner and petroleum gases)can accumulate or collect, or where volatile combustible substancesare handled.Corrosive gas can cause corrosion of heat exchanger, breakage of plastic parts and etc. And combustible gas can cause fire.

• Do not use the indoor unit at the place where water splashes may occur such as in laundries.Since the indoor unit is not waterproof, it can cause electric shocks and fire.

• Do not install nor use the system close to the equipment that generates electromagnetic fields or high frequency harmonics.Equipment such as inverters, standby generators, medical high frequency equipments and telecommunication equipments can affect the system, and cause malfunctions and breakdowns. The system can also affect medical equipment and telecommunication equipment, and obstruct its function or cause jamming.

• Do not place any variables which will be damaged by getting wet under the indoor unit.When the relative humidity is higher than 80% or drainage pipe is clogged, condensation or drainage water can drop and it can cause the damage of valuables.

• Do not install the remote control at the direct sunlight.It can cause malfunction or deformation of the remote control.

• Do not use the unit for special purposes such as storing foods, cooling precision instruments and preservation of animals, plants or art.It can cause the damage of the items.

• Do not use any materials other than a fuse with the correct rating in the location where fuses are to be used.Connecting the circuit with copper wire or other metal thread can cause unit failure and fire.


• Do not touch any refrigerant pipes with your hands when the system is in operation.During operation the refrigerant pipes become extremely hot or extremely cold depending the operating condition, and it can cause burn injury or frost injury.

• Do not wash the inside of the air-conditioner.Water leakage and permanent damage may result.Electrical hazard exists.

• Carry out the electrical work for ground lead with care.Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults such as electric shocks due to short-circuiting.

• Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulphide gas can occur.Poisonous gases will flow into the room through drainage pipe and seriously affect the user’s health and safety. This can also cause the corrosion of the indoor unit and a resultant unit failure or refrigerant leak.

• Ensure that no air enters in the refrigerant circuit when the unit is installed and removed.If air enters in the refrigerant circuit, the pressure in the refrigerant circuit becomes too high, which can cause burst and personal injury.

• Do not process or splice the power cord, or share the socket with other power plugs.This may cause fire or electric shock due to defecting contact, defecting insulation and over-current etc.

• Do not bundle or wind or process the power cord. Do not deform the power cord by treading it.This may cause fire or heating.


• Do not run the unit with removed panels or protections.Touching rotating equipments, hot surfaces or high voltage parts can cause personal injury due to entrapment, burn or electric shocks.

• Do not perform any change of protective device itself or its setup condition.The forced operation by short-circuiting protective device of pressure switch and temperature controller or the use of non specified component can cause fire or burst.

SAFETY PRECAUTIONS• Before installation, read the “SAFETY PRECAUTIONS” carefully and strictly

follow it during the installation work in order to protect yourself.• The precautionary items mentioned below are distinguished into two levels, and . : Wrong installation would cause serious consequences such


depending on circumstances.Both mention the important items to protect your health and safety so strictly follow them by any means.

• Be sure to confirm no anomaly on the equipment by commissioning after completedinstallation and explain the operating methods as well as the maintenance methodsof this equipment to the user according to the owner’s manual.


• Before starting the installation work, proper precautions (using suitable protective clothing, groves etc.) should be taken by qualified installer.

• Pay attention not to fall down the tools, etc. when installing the unit at the high position.




CAUTIONWARNING

CAUTION

WARNING

• This installation manual illustrates the method of installing an indoor unit.• For electrical wiring work, see instructions set out on the backside.• For outdoor unit installation and refrigerant piping, refer to page 30.

• While installing the unit, be sure to check the selection of installation place, power source specifications, usage limitation (piping length, height differences between indoor and outdoor units, power source voltage etc.) and installation spaces. • A wired remote control unit is supplied separately as an option part.

(3) Ceiling concealed type (SRR)

Models SRR25ZM-S, 35ZM-S, 50ZM-S, 60ZM-S

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11

2

21

Q’tyStandard accessories (installation kit)Accessories for indoor unit

Wireless remote controlRemote control holder

Battery [R03 (AAA, Micro) 1.5V]Joint (for drain hose)

28

24

Washer (for suspension bolt M10)

2Flat head machine screw(for remote control signal receiver M3.5x10)

1Plate (display)

Clamp (for drain hose) (big:1, small:1)


• Model name and power source• Refrigerant piping length• Piping, wiring and miscellaneous small parts

10

98

BandPipe cover (big:1, small:1)

1312

76

5

21Remote control signal receiver31Installation frame (for remote control signal receiver)4

1


1

2

3

4

5

6

7

8

9

Plus headed driver

Knife

Saw

Tape measure

Hammer

Spanner wrench

Torque wrench [14.0~62.0N·m (1.4~6.2kgf·m)]



10 Flaring tool set (Designed specifically for R410A)

11 Gas leak detector (Designed specifically for R410A)

12 Gauge for projection adjustment (Used when flare is made by using conventional flare tool)

13 Pipe bender

1

Q’tyOption parts (Separately sold parts)

Bottom air inlet kit 25, 35 models : UT-BAT1EF 50, 60 models : UT-BAT2EF

Q’tyLocally procured parts

1

48

4

Drain hose (VP25)

Suspension bolts (M10)

Nuts (M10)Spring lock washers (M10)H

GF

E

1

11

1

Sealing plate

SleeveInclination plate

PuttyD

CB

A

11


Drilling of hole and fixture of sleeve (Locally procured parts)

TopSleeve

Thickness of the wall + 1.5cm Indoor side Outdoor side

5

ø65

Indoor side Outdoor side Installed state

Turn totighten

B C

* Sleeve is for use in refrigerant piping work. Please install another pipe separately for drain piping work.

In case of rear piping draw out, cut off the lower and the right side portions of the sleeve collar.

Drill a hole with whole core drill.

※Dimensions of the opening on the ceiling after removing inspection opening (1)

Model25, 3550, 60

A750950

B770970

C100(80)or more

D150(50)or more

E270

or more

F150(0)or more

D

Dedicatedinspection openingmust be provided.

Inspection opening (1)

Inspection opening (2)

Indoor Unit

Ceiling plate

Air intake direction

E Funit : mm

1000 or more

unit : mm

Obs

tacl

e

1000

or m

ore

Obstacle

Pipe locations

All models

Suspension Bolt LocationA

B

Model25, 3550, 60

A790990

B457457

○ Adhere to the measurements given below for the length of the suspension bolts.Unit

Suspension bolt (M10)

Und

er 6

0 m

m

Remove bracketin this direction.

Inspection opening (1)Service Inspection opening (2)

Clamping of the flare of required and gas refrigerant pipe UseNot Use

Drain pipe connection UseNot Use

Installation and removal of blower Not UseUse

Control box

Connecting wire (between indoor and outdoor) UseNot Use

Unit display section (Remote control signal receiver) UseNot Use

Replace drain pump UseNot Use

Replace heat exch sensor UseNot Use

Replace air filter Not UseUse

Refrigerant gas pipe

Refrigerant liquid pipe

Drain Pipe connectionVP25 (I.D. 25, O.D. 32)

500413370326

380

200

168 10

555

3030

Gravity drainage

The minimum dimensions when used Bottom air inlet kit (Option parts) are shown in parentheses.

① Wireless remote control

② Remote control holder

⑤ Wood screws

Sleeve(Locally procured

parts)

3 Remote control signal receiver

450

○ Remove bracket from the unit after unpacking according to process as shown below.

(1) Loosen 2 screws.(2) Remove bracket.(3) Tighten the screws.

Sleeve Inclination plate

A Sealing plate

B

Drain pipe, refrigerant gas pipeand refrigerant liquid pipe

A

200

C

200

Air blowout direction

Air outlet

100 450

B

F

E

Screw

CAUTIONCompletely seal the hole on the wall with putty. Otherwise, furniture, or other, may be wetted by leaked water or dewing.

putty

putty

Indoor side Outdoor sideD

D

Grill (Prepare on site)

37



Indoor unit(Install at location that meets the following conditions, after getting approval from the customer)

○ Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed.○ A firm location that may sustain the weight of the unit, and do not cause the unit or the ceiling to vibrate.○ A place where there will be enough space for servicing. (Where space mentioned below can be secured)○ Where wiring and the piping work will be easy to conduct.○ The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting.○ A place where it can be easily drained.○ A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.)○ Places where this unit is not affected by the high frequency equipment or electric equipment.○ Avoid installing this unit in place where there is much oil mist.○ Places where there is no electric equipment or household under the installing unit.


Space for installation and service


○ Where the suction inlet of the unit is located far from the air inlet on the ceiling, the entire inside of ceiling acts as an air suction duct so that the capacity is reduced at the startup.

○ Areas where dew point is lower than around 28°C and relative humidity is lower than 80%.This indoor unit is tested under the condition of JIS (Japan Industrial Standard) high humidity condition and confirmed there is no problem. However, there is some risk of condensation drop if the air-conditioner is operated under the severer condition than mentioned above.If there is a possibility to use it under such a condition, attach additional insulation of 10 to 20mm thick for entire surface of indoor unit, refrigeration pipe and drain pipe.

Inspection opening for services

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• Flaring work

Measurement B





CONNECTION OF REFRIGERANT PIPINGS


Preparation

(Do not turn) PressRemove

A

90 ±

0.5˚ Dimension A

Liquid side ø6.35 : 9.1 (mm)Gas side ø9.52 : 13.2 (mm)

ø12.7 : 16.6 (mm)

CAUTION


Indoor

CAUTION

Do not apply excess torque to the flared nuts. Otherwise, the flared nuts may crack.

○Connect the pipes on both liquid and gas sides.○Tighten the nuts to the following torque.


(ø12.7) : 49.0 - 61.0 N·m (4.9 - 6.1 kgf·m)

Connection

Indoor

(Do not turn)

Liquid side Gas side

○ Attach the washers and nuts to the suspension bolts.

○ Attach the hanging tool to the above nuts, and tighten the nuts.

M10 washer

M10 nutM10 suspension bolt

M10 nut

M10 washer

M10 spring lock washer

Main frame

InsertsHoled anchor

Holed plug

Suspension bolts M10

Concrete

If steel embedded ceiling

Let the pipe side be slightly sloped.

Pipe side

Pour waterWatersurface

0~5mm Vinyl hose

B

A

unit : mm

Model

25, 3550, 60

Inlet

160

Outlet

99

Adjustment for horizontality

• Adjust so the bottom side of the unit will be leveled with the water surface as illustrated below.

Air inlet and outlet size

○ Size of air inlet and outlet of the plate.

○ Cover the flare connection part of the indoor unit with attached insulation material after a gas leakage inspection, and tighten both ends with attached bands.• Make sure to insulate both gas pipes and liquid pipes completely.

Incomplete insulation may cause dew condensation or water dropping. • Use heat-resistant (120 °C or more) insulations on the gas side pipes.• In case of using at high humidity condition, reinforce insulation of refrigerant pipes.

Surface of insulation may cause dew condition or water dropping, if insulations are not reinfoced.

<The case of using thickness of insulation is 10mm> <The case of using reinfoced insulation>Pipe cover

Unit Unit

BandBand (Prepare on site)

Insulation (Prepare on site)

Pipe cover (Prepare on site)

BandThe thickness of insulation is 10mm

• If the bottom drain piping can be done with a descending gradient (1/50-1/100), it is possible to connect the pipes as shown in the drawing below.

• When sharing a drain pipe for more than one unit, lay the main pipe 100mm below the drain outlet of the unit. In addition, select VP-30 or bigger size for main drain pipe.

Descending slope greater than 1/100

VP-30 or bigger

As wide as possible (about100mm)

○ Install the drain pipe according to the installation manual in order to drain properly.Imperfection in draining may cause flood indoors and wetting the household goods, etc.

○ Do not put the drain pipe directly into the ditch where toxic gas such as sulfur, the other harmful and inflammable gas is generated. Toxic gas would flow into the room and it would cause serious damage to user’s health and safety (some poisoning or deficiency of oxygen). In addition, it may cause corrosion of heat exchanger and bad smell.

○ Connect the pipe securely to avoid water leakage from the joint.○ Insulate the pipe properly to avoid condensation drop.○ Check if the water can flow out properly from both the drain outlet on the indoor unit and the end of the drain pipe after installation.

Insulating material(to be removed)

Joint

Rubber stopper(to be removed)

Standard hard polyvinylchloride pipe

Connecting port of bottomdrain pipes

(Outside diameter:25mm)

Connecting port of top drain pipe

DRAIN PIPE

(3) Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway.• Pay attention not to give stress on the pipe on the indoor unit side, and support and fix the pipe as close place to the unit as possible when connecting the drain pipe.• Do not set up air vent.

Drain hose

Joint

Drain hose (VP25)Cramp

(1) Insert the joint to the drain hose on the indoor unit and fix it securely with the clamp (small).• Do not apply adhesives on this end.

(2) Connect the drain pipe (VP25) to the joint and fix it seaurely with the clamp (big).

• The position for drain pipe outlet can be raised up to 600mm above the ceiling. Use elbows for installation to avoid obstacles inside ceiling. If the horizontal drain pipe is too long before vertical pipe, the backflow of water will increase when the unit is stopped, and it may cause overflow of water from the drain pan on the indoor unit. In order to avoid overflow, keep the horizontal pipe length and offset of the pipe within the limit shown in the figure below.

(4) Insulate the drain pipe.• Be sure to insulate the joint and the drain pipe installed indoor otherwise it may cause dew condensation and water leakage.

Drain up235~265mm

Drain hose

Maxim

um lo

cal

drain

up di

mens

ion

Joint for VP25 (Prepare on site)

600

Right overhead

Pour water in the drain pan with a siphon.

Pouring water hose

Drain pan Remove grommet from the unit.

Gromment

Outline of bottom drain piping work

Securing the suspension boltsInstalling the main unit

If wooden ceiling

Holes for suspention bolts

Clamps Beams

Square bars for suspension the air-conditioner

○ Either use a level vial, or adjust the level according to the method below.

○ If the unit is not leveled, it may cause malfunctions or inoperation of the float switch.

Work procedure

○ Secure the suspension bolts firmly following theillustrations and other instructions.

⑨

⑨

F G

H

G

A B

660860

13

12

13

8

7 Pipe cover (Prepare on site)

Supporting fixture Supporting metal

Air vent

No bumpNo trap

Not touching the water

Trapped air will generate noises.

Insulation material

1.5m~2m


○ Conduct a drainage test after completion of the electrical work and piping work.○ During the trial, make sure that drain flows properly through the piping and that no water

leaks from connections.○ In case of a new building, conduct the test before it is furnished with the ceiling.○ Be sure to conduct this test even when the unit is installed in the heating season.

(1) Supply about 1000 cc of water to the unit through the air outlet by using a feed water pump.(2) Check the drain while cooling operation.

Drain test

Procedures of drain test

7

E


Use a flare tool designed for R410A or a conventional flare tool.Note that measurement B (protrusion from the flaring block) will vary depending on the type of a flare tool in use.If a conventional flare tool is used, use a copper pipe gauge or a similar instrument to check protrusion so that you can keep measurement B to a correct value.



ø6.35

ø12.7

0.0 - 0.5

0.0 - 0.5

1.0 - 1.5

1.0 - 1.5

1.5 - 2.0

2.0 - 2.5ø9.52 0.0 - 0.5 1.0 - 1.5 1.5 - 2.0

Measurement B (mm)


- 126 -

'15 • SC

M-T

-186

TERMINAL CONNECTION FOR AN INTERFACERemove the control lid. (Remove the screw.)There is a terminal (respectively marked with CNS) for the indoor control board.In connecting an interface, connect to the respective terminal securely with the connection harness supplied with an optional “ Interface connection kit SC-BIKN-E” and fasten the connection harness onto the indoor control box with the clamp supplied with the kit.For more details, please refer to the user’s manual of your “ Interface connection kit SC-BIKN-E”.

Remove the control lid.Remove the wiring clamp.Connect the connecting wire to the terminal block.1) Connect the connection wire securely. If the wire is not affixed completely,

contact will be poor, and it is dangerous as the terminal block may heat up and catch fire.


Fix the connecting wire by wiring clamp.Connect the connector of the remote control singnal receiver to the relay wiring.Attach the control lid.



Use cables for interconnection wiring to avoid loosening of the wires. CENELEC code for cables Required field cables.


○ In case of faulty wiring connection, indoor unit does not operate. Then, run lamp turns on and timer lamp blinks.

Securing the remote control signal receiver(1) Open a through-hole on the wall to install the reception face for the

remote control signal receiver ③.(2) Insert the remote control signal receiver ③ in the installation frame 4 ,

and fix the calking section.(3) Fix the installation frame ④ on the wall using the flat head machine

screws⑩.(4) Fix the plate (display) ⑪ on the installation frame ④ using the flat head

machine screws packed together with the plate (display) ⑩.

⑪Plate (display)

⑩Flat head machine screw

Flat head machine screw(In the pack of ⑪)

④ Installation frame

③Remote control signal receiver

Cut off this section if it interferes with the wall.

CalkingCalkingCut off this section if it interfereswith the wall.

○Conventionally, operate the wirelessremote control by holding in your hand.

○Avoid installing it on a clay wall etc.


1



5Cover

Battery6○Pull out the cover and mount the batteries[R03 (AAA, Micro), 2 pieces] in the body regularly.(Fit the poles with the indication marks,

& without fail)○Do not use new and old batteries together.

Disconnect

When two air-conditioners are installed in the same room, use this setting when the two air-conditioners are not operated with one wireless remote control. Set thewireless remote control and indoor unit.




Setting an indoor unitTurn off the power source, and turn it on after 1 minute.Point the wireless remote control that was set according to the procedure described on the left side at the unit display section and send a signal by pressing the ACL switch on the wireless remote control.Since the signal is sent in about 6 seconds after the ACL switch is pressed, point the wireless remote control at the unit display section for some time.Check that the reception buzzer sound "pip" is emitted from the indoor unit.At completion of the setting, the indoor unit emits a buzzer sound "pip". (If no reception tone is emitted, start the setting from the beginning again.)

• Forced cooling operationTurn off power source. Turn on power source again after a while. Then, press the ON/OFF button continuously for at least 5 seconds. (The operation will start.)

Connect charge hose to check joint of outdoor unit.Liquid side : Close the liquid valve with hexagon wrench key.Gas side : Fully open the gas valve.Carry out cooling operation. (If indoor temperature is low, operate forced cooling operation.)After low pressure gauge become 0.01MPa, stop cooling operation and close the gas valve.

<How to pump down>

○ In order to protect the environment, be sure to pump down (recovery of refrigerant).○Pump down is the method of recovering refrigerant from the indoor unit to the



Unit ON/OFF button

INSTALLATION TEST CHECK POINTS

After installationPower cables and connecting wires are securely fixed to the terminal block. (Both indoor and outdoor)The power source voltage is correct as the rating.The drain hose is fixed securely.Service valve is fully open.

No gas leaks from the joints of the service valve.

The pipe joints for indoor and outdoor pipes have been insulated.The screw of the control lid is tightened securely.

Test runOperation of the unit has been explained to the customer. (Three-minutes restart preventive timer)When the air-conditioner is restarted or when changing the operation, the unit will not start operating for approximately 3 minutes. This is to protect the unit and it is not a malfunction.

The wireless remote control is normal.Protective functions are not working.Water drains smoothly.No abnormal noise.Air-conditioning operation is normal.

Check the following points again after completion of the installation, and before turning on the power. Conduct a test run again and ensure that the unit operates properly. Explain to the customer how to use the unit and how to take care of the unit following the installation manual.

Receptionpip

(1)

(3)(2)

(5)(6)

(4)

48 75mm

(1)(2)

(1)(2)

(3)

(3)

(1)(2)

(1)(2)

(3)

Earth wire shall be Yellow/Green (Y/G) in color and longer than other AC wires for safety reason.

Be sure to connect securely.

Terminal block Wiring Clamp

The screw of the lid is tightened securely

Control Lid

Connecting wire

Wiring of the remote control signal receiver

- 127 -

'15 • SCM-T-186

PJA012D781INSTALLATION MANUAL FOR CEILING CASSETTE– 4 WAY COMPACT (600 x 600mm) –

This manual is for the installation of an indoor unit.For electrical wiring work (Indoor), refer to the electrical wiring work installation manual. For remote controller installation, refer to the installation manual attached to a remote controller. For wireless kit installation, refer to the installation manual attached to a wireless kit. For electrical wiring work (Outdoor) and refrigerant pipe work installation for outdoor unit, refer to the installation manual attached to an outdoor unit.This unit must always be used with the panel.

SAFETY PRECAUTIONS

Read the “SAFETY PRECAUTIONS” carefully first of all and then strictly follow it during the installationwork in order to protect yourself. The precautionary items mentioned below are distinguished into two levels, and . : Wrong installation would cause serious consequences such as injuries or death. : Wrong installation might cause serious consequences depending on circumstances.

Both mentions the important items to protect your health and safety so strictly follow them by any means. After completing the installation, do commissioning to confirm there are no abnormalities, and explain to the customers about “SAFETY PRECAUTIONS”, correct operation method and maintenance method (air filter cleaning, operation method and temperature setting method) with user’s manual of this unit.Ask your customers to keep this installation manual together with the user’s manual. Also, ask them to hand over the user’s manual to the new user when the owner is changed.

Installation should be performed by the specialist.If you install the unit by yourself, it may lead to serious trouble such as water leakage, electric shock, fire, and injury due to overturn of the unit.

Install the system correctly according to these installation manuals. Improper installation may cause explosion, injury, water leakage, electric shock, and fire.

Consider measurement not to exceed the limit of the density of refrigerant in the event of leakage especially when it is installed in a small room.Consult the specialist about the measure. If the density of refrigerant exceeds the limit in the event of the leakage, serious accidents may occur due to lack of oxygen.

Use the genuine accessories and the specified parts for installation.If parts unspecified by our company are used it could cause water leakage, electric shock, fire, and injury due to overturn of the unit.

Ventilate the working area well in case the refrigerant leaks during installation.If the refrigerant contacts the fire, toxic gas is produced.

Install the unit in a location that can hold heavy weight.Improper installation may cause the unit to fall leading to accidents.

Install the unit properly in order to be able to withstand strong winds such as typhoons, and earthquakes.Improper installation may cause the unit to fall leading to accidents.

Do not mix air in to the cooling cycle on installation or removal of the air conditioner.If air is mixed in, the pressure in the cooling cycle will rise abnormally and may cause explosion and injuries.

Be sure to have the electrical wiring work done by qualified electrical installer, and use exclusive circuit.Power source with insufficient capacity and improper work can cause electric shock and fire.

Use specified wire for electrical wiring, fasten the wiring to the terminal securely, and hold the cable securely in order not to apply unexpected stress on the terminal.Loose connections or hold could result in abnormal heat generation or fire.

Arrange the electrical wires in the control box properly to prevent them from rising. Fit the lid of the services panel property.Improper fitting may cause abnormal heat and fire.

Check for refrigerant gas leakage after installation is completed.If the refrigerant gas leaks into the house and comes in contact with a fan heater, a stove, or an oven, toxic gas is produced.

Use the specified pipe, flare nut, and tools for R410A.Using existing parts (R22) could cause the unit failure and serious accident due to explosion of the cooling cycle.

Tighten the flare nut according to the specified method by with torque wrench.If the flare nut were tightened with excess torque, it could cause burst and refrigerant leakage after a long period.

Make sure there is no dust or clogging on both the plug and the socket nor loose connection of the socket before plugging, and plug in securely to the end of the blade.Accumulation of dust, clogging on the socket or plug, or loose installation of the socket could cause electric shock and fire. Replace the socket if it is loose.

Connect the pipes for refrigeration circuit securely in installation work before compressor is operated.If the compressor is operated when the service valve is open without connecting the pipe, it could cause explosion and injuries due to abnormal high pressure in the system.

Stop the compressor before removing the pipe on pump down work.If the pipe is removed when the compressor is in operation with the service valve open, air would be mixed in the refrigeration circuit and it could cause explosion and injuries due to abnormal high pressure in the cooling cycle.

Use the genuine optional parts. And installation should be performed by a specialist.If you install the unit by yourself, it could cause water leakage, electric shock and fire.

Do not repair by yourself. And consult with the dealer about repair.Improper repair may cause water leakage, electric shock or fire.

Consult the dealer or a specialist about removal of the air conditioner.Improper installation may cause water leakage, electric shock or fire.

Turn off the power source during servicing or inspection work.If the power is supplied during servicing or inspection work, it could cause electric shock and injury by the operating fan.

Do not run the unit when the panel or protection guard are taken off.Touching the rotating equipment, hot surface, or high voltage section could cause an injury to be caught in the machine, to get burned, or electric shock.

Shut off the power before electrical wiring work.It could cause electric shock, unit failure and improper running.

WARNING

Perform earth wiring surely.Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth wiring. Improper earth could cause unit failure and electric shock due to a short circuit.

Use the circuit breaker of correct capacity.Using the incorrect capacity one could cause the system failure and fire.

Do not use any materials other than a fuse of correct capacity where a fuse should be used.Connecting the circuit by wire or copper wire could cause unit failure and fire.

Do not install the indoor unit near the location where there is possibility of flammable gas leakages.If the gas leaks and gathers around the unit, it could cause fire.

Do not install and use the unit where corrosive gas (such as sulfurous acid gas etc.) or flammable gas (such as thinner, petroleum etc.) may be generated or accumulated, or volatile flammable substances are handled.It could cause the corrosion of heat exchanger, breakage of plastic parts etc. And inflammable gas could cause fire.

Do not use the indoor unit at the place where water splashes such as laundry.Indoor unit is not waterproof. It could cause electric shock and fire.

Do not use the indoor unit for a special purpose such as food storage, cooling for precision instrument, preservation of animals, plants, and a work of art.It could cause the damage of the items.

Do not install nor use the system near equipments which generate electromagnetic wave or high harmonics.Equipments like inverter equipment, private power generator, high-frequency medical equipment, or telecommunication equipment might influence the air conditioner and cause a malfunction and breakdown. Or the air conditioner might influence medical equipments or telecommunication equipments, and obstruct their medical activity or cause jamming.

Do not install the remote controller at the direct sunlight.It could cause breakdown or deformation of the remote controller.

Do not install the indoor unit at the place listed below.Places where flammable gas could leak.Places where carbon fiber, metal powder or any powder is floated.Place where the substances which affect the air conditioner are generated such as sulfide gas, chloride gas, acid or alkali.Places exposed to oil mist or steam directly.On vehicles and shipsPlaces where machinery which generates high harmonics is used.Places where cosmetics or special sprays are frequently used.Highly salted area such as beach.Heavy snow areaPlaces where the system is affected by smoke from a chimney.Altitude over 1000m

Do not put any valuables which will break down by getting wet under the air conditioner.Condensation could drop when the relative humidity is higher than 80% or drain pipe is clogged, and it damages user’s belongings.

Do not use the base frame for the outdoor unit which is corroded or damaged after a long period of use.It could cause the unit falling down and injury.

Pay attention not to damage the drain pan by weld sputter when brazing work is done near the unit.If sputter entered into the unit during brazing work, it could cause damage (pinhole) of drain pan and leakage of water. To avoid damaging, keep the indoor unit packed or cover the indoor unit.

Install the drain pipe to drain the water surely according to the installation manual.Improper connection of the drain pipe may cause dropping water into room and damaging user’s belongings.

Do not put the drain pipe directly into the ditch where toxic gas such as sulfide gas is generated.Toxic gas would flow into the room and it would cause serious damage to user’s health and safety.

Do not share the drain pipe for indoor unit and GHP (Gas Heat Pump system) outdoor unit.Toxic exhaust gas would flow into room and it might cause serious damage (some poisoning or deficiency of oxygen) to user’s health and safety.

For drain pipe installation, be sure to make descending slope of greater than 1/100, not to make traps, and not to make air-bleeding Check if the drainage is correctly done during commissioning and ensure the space for inspection and maintenance.

Ensure the insulation on the pipes for refrigeration circuit so as not to condense water.Incomplete insulation could cause condensation and it would wet ceiling, floor, and any other valuables.

Do not install the outdoor unit where is likely to be a nest for insects and small animals.Insects and small animals could come into the electronic components and cause breakdown and fire. Instruct the user to keep the surroundings clean.

Pay extra attention, carrying the unit by hand.Carry the unit with 2 people if it is heavier than 20kg. Do not use the plastic straps but the grabbing place, moving the unit by hand. Use protective gloves in order to avoid injury by the aluminum fin.

Make sure to dispose of the packaging material.Leaving the materials may cause injury as metals like nail and woods are used in the package.

Do not operate the system without the air filter.It may cause the breakdown of the system due to clogging of the heat exchanger.

Do not touch any button with wet hands.It could cause electric shock.

Do not touch the refrigerant piping with bare hands when in operation.The pipe during operation would become very hot or cold according to the operating condition, and it could cause a burn or frostbite.

Do not clean up the air conditioner with water.It could cause electric shock.

Do not turn off the power source immediately after stopping the operation.Be sure to wait for more than 5 minutes. Otherwise it could cause water leakage or breakdown.

Do not control the operation with the circuit breaker.It could cause fire or water leakage. In addition, the fan may start operation unexpectedly and it may cause injury.

CAUTION

This manual is for the installation of an indoor unit.For electrical wiring work (Indoor), refer to the electrical wiring work installation manual. For remotecontroller installation, refer to the installation manual attached to a remote controller. For wirelesskit installation, refer to the installation manual attached to a wireless kit. For electrical wiring work(Outdoor) and refrigerant pipe work installation for outdoor unit, refer to the installation manualattached to an outdoor unit.This unit must always be used with the panel.

SAFETY PRECAUTIONS

WARNING

CAUTION

Read the “SAFETY PRECAUTIONS” carefully first of all and then strictly follow it during the installation work in order to protect yourself.The precautionary items mentioned below are distinguished into two levels, and .

: Wrong installation would cause serious consequences such as injuries or death.: Wrong installation might cause serious consequences depending on circumstances.

Both mentions the important items to protect your health and safety so strictly follow them by any means.The meanings of “Marks” used here are as shown as follows:

After completing the installation, do commissioning to confirm there are no abnormalities, and explain to the customers about “SAFETY PRECAUTIONS”, correct operation method and maintenance method (air filter cleaning, operation method and temperature setting method) with user’s manual of this unit.Ask your customers to keep this installation manual together with the user’s manual. Also, ask them to hand over the user’s manual to the new user when the owner is changed.

CAUTION


CAUTION

Installation should be performed by the specialist.

If you install the unit by yourself, it may lead to serious trouble such as water leakage, electric shock, fire, and injury due to overturn of the unit.

Install the system correctly according to these installation manuals.

Improper installation may cause explosion, injury, water leakage, electric shock, and fire.

When installing in small rooms, take prevention measures not to exceed the density limit of refrigerant in the

event of leakage, referred by the formula (accordance with ISO5149).

If the density of refrigerant exceeds the limit, please consult the dealer and install the ventilation system, otherwise lack of oxygen can occur, which can cause serious accidents.

Use the genuine accessories and the specified parts for installation.

If parts unspecified by our company are used it could cause water leakage, electric shock, fire, and injury due to overturn of the unit.

Ventilate the working area well in case the refrigerant leaks during installation.

If the refrigerant contacts the fire, toxic gas is produced.

Install the unit in a location that can hold heavy weight.

Improper installation may cause the unit to fall leading to accidents.

Install the unit properly in order to be able to withstand strong winds such as typhoons, and earthquakes.


Do not mix air in to the cooling cycle on installation or removal of the air conditioner.

If air is mixed in, the pressure in the cooling cycle will rise abnormally and may cause explosion and injuries.

Be sure to have the electrical wiring work done by qualified electrical installer, and use exclusive circuit.

Power source with insufficient capacity and improper work can cause electric shock and fire.

Use specified wire for electrical wiring, fasten the wiring to the terminal securely, and hold the cable securely in order not to apply unexpected stress on the terminal.

Loose connections or hold could result in abnormal heat generation or fire.

Arrange the electrical wires in the control box properly to prevent them from rising. Fit the lid of the servicespanel property.

Improper fitting may cause abnormal heat and fire.

Check for refrigerant gas leakage after installation is completed.

If the refrigerant gas leaks into the house and comes in contact with a fan heater, a stove, or an oven, toxic gas is produced.

Use the specified pipe, flare nut, and tools for R410A.

Using existing parts (R22) could cause the unit failure and serious accident due to explosion of the cooling cycle.

Tighten the flare nut according to the specified method by with torque wrench.

If the flare nut were tightened with excess torque, it could cause burst and refrigerant leakage after a long period.

Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulfide gas can occur.

Poisonous gases will flow into the room through drainage pipe and seriously affect the user's health and safety. This can also cause the corrosion of the indoor unit and a resultant unit failure or refrigerant leak.

Connect the pipes for refrigeration circuit securely in installation work before compressor is operated.

If the compressor is operated when the service valve is open without connecting the pipe, it could cause explosion and injuries due to abnormal high pressure in the system.

Stop the compressor before removing the pipe after shutting the service valve on pump down work.


Only use prescribed optional parts. The installation must be carried out by the qualified installer.


Do not repair by yourself. And consult with the dealer about repair.

Improper repair may cause water leakage, electric shock or fire.

Consult the dealer or a specialist about removal of the air conditioner.

Improper installation may cause water leakage, electric shock or fire.

Turn off the power source during servicing or inspection work.

If the power is supplied during servicing or inspection work, it could cause electric shock and injury by the operating fan.

Do not run the unit when the panel or protection guard are taken off.

Touching the rotating equipment, hot surface, or high voltage section could cause an injury to be caught in the machine, to get burned, or electric shock.

Shut off the power before electrical wiring work.

It could cause electric shock, unit failure and improper running.

Perform earth wiring surely.

Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth wiring. Improper earth could cause unit failure and electric shock due to a short circuit.

Earth leakage breaker must be installed.


Use the circuit breaker of correct capacity. Circuit breaker should be the one that disconnect all poles under over current.


Do not use any materials other than a fuse of correct capacity where a fuse should be used.

Connecting the circuit by wire or copper wire could cause unit failure and fire.

Do not install the indoor unit near the location where there is possibility of flammable gas leakages.

If the gas leaks and gathers around the unit, it could cause fire.

Do not install and use the unit where corrosive gas (such as sulfurous acid gas etc.) or flammable gas (such as thinner, petroleum etc.) may be generated or accumulated, or volatile flammable substances are handled.

It could cause the corrosion of heat exchanger, breakage of plastic parts etc. And inflammable gas could cause fire.

Secure a space for installation, inspection and maintenance specified in the manual.


Do not use the indoor unit at the place where water splashes such as laundry.

Indoor unit is not waterproof. It could cause electric shock and fire.

Do not use the indoor unit for a special purpose such as food storage, cooling for precision instrument, preservation of animals, plants, and a work of art.

It could cause the damage of the items.

Do not install nor use the system near equipments which generate electromagnetic wave or high harmonics.

Equipments like inverter equipment, private power generator, high-frequency medical equipment, or telecommunicationequipment might influence the air conditioner and cause a malfunction and breakdown. Or the air conditioner might influence medical equipments or telecommunication equipments, and obstruct their medical activity or cause jamming.

Do not install the remote controller at the direct sunlight.

It could cause breakdown or deformation of the remote controller.

Do not install the indoor unit at the place listed below.

· Places where flammable gas could leak.· Places where carbon fiber, metal powder or any powder is floated.· Place where the substances which affect the air conditioner are generated

such as sulfide gas, chloride gas, acid, alkali or ammonic atmospheres.· Places exposed to oil mist or steam directly.· On vehicles and ships· Places where machinery which generates high harmonics is used.

Do not install the indoor unit in the locations listed below (Be sure to install the indoor unit according to the installation manual for each model because each indoor unit has each limitation) · Locations with any obstacles which can prevent inlet and outlet air of the unit· Locations where vibration can be amplified due to insufficient strength of structure.· Locations where the infrared receiver is exposed to the direct sunlight or the strong light beam. (in case of the

infrared specification unit)· Locations where an equipment affected by high harmonics is placed. (TV set or radio receiver is placed within 5m)· Locations where drainage cannot run off safely.It can affect performance or function and etc..

Do not put any valuables which will break down by getting wet under the air conditioner.

Condensation could drop when the relative humidity is higher than 80% or drain pipe is clogged, and it damages user’s belongings.

Do not use the base frame for the outdoor unit which is corroded or damaged after a long period of use.

It could cause the unit falling down and injury.

Pay attention not to damage the drain pan by weld sputter when brazing work is done near the unit.

If sputter entered into the unit during brazing work, it could cause damage (pinhole) of drain pan and leakage of water.To avoid damaging, keep the indoor unit packed or cover the indoor unit.

Install the drain pipe to drain the water surely according to the installation manual.

Improper connection of the drain pipe may cause dropping water into room and damaging user’s belongings.

Do not share the drain pipe for indoor unit and GHP (Gas Heat Pump system) outdoor unit.

Toxic exhaust gas would flow into room and it might cause serious damage (some poisoning or deficiency of oxygen) to user’s health and safety.

Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work.


For drain pipe installation, be sure to make descending slope of greater than 1/100, not to make traps,and not to make air-bleeding.

Check if the drainage is correctly done during commissioning and ensure the space for inspection and maintenance.

Ensure the insulation on the pipes for refrigeration circuit so as not to condense water.

Incomplete insulation could cause condensation and it would wet ceiling, floor, and any other valuables.

Do not install the outdoor unit where is likely to be a nest for insects and small animals.

Insects and small animals could come into the electronic components and cause breakdown and fire. Instruct the user to keep the surroundings clean.

Pay extra attention, carrying the unit by hand.

Carry the unit with 2 people if it is heavier than 20kg. Do not use the plastic straps but the grabbing place, moving the unit by hand. Use protective gloves in order to avoid injury by the aluminum fin.

Make sure to dispose of the packaging material.

Leaving the materials may cause injury as metals like nail and woods are used in the package.

Do not operate the system without the air filter.

It may cause the breakdown of the system due to clogging of the heat exchanger.

Do not touch any button with wet hands.

It could cause electric shock.

Do not touch the refrigerant piping with bare hands when in operation.

The pipe during operation would become very hot or cold according to the operating condition, and it could cause a burn or frostbite.

Do not clean up the air conditioner with water.


Do not turn off the power source immediately after stopping the operation.

Be sure to wait for more than 5 minutes. Otherwise it could cause water leakage or breakdown.

Do not control the operation with the circuit breaker.

It could cause fire or water leakage. In addition, the fan may start operation unexpectedly and it may cause injury.


· Places where cosmetics or special sprays are frequently used.

· Highly salted area such as beach.· Heavy snow area· Places where the system is affected by

smoke from a chimney.· Altitude over 1000m

PJA012D786

This manual is for the installation of an indoor unit.For remote control installation, refer to page 384. For wireless kit installation, refer to page 389. For electrical wiring work (Outdoor) and refrigerant pipe work installation for outdoor unit, refer to page 30.This unit must always be used with the panel.

WARNING

CAUTION


: Wrong installation would cause serious consequences such as injuries or death. : Wrong installation might cause serious consequences depending on circumstances. Both mentions the important items to protect your health and safety so strictly follow them by any means.

The meanings of “Marks” used here are as shown as follows:


CAUTION


CAUTION
















Do not mix air in to the cooling cycle on installation or removal of the air-conditioner.






Arrange the electrical wires in the control box properly to prevent them from rising. Fit the lid of the services panel property.














Only use prescribed option parts. The installation must be carried out by the qualified installer.




Consult the dealer or a specialist about removal of the air-conditioner.









Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth wiring. Improper earth could cause unit failure and electric shock due to a short circuit.


















Equipments like inverter equipment, private power generator, high-frequency medical equipment, or telecommunication equipment might influence the air-conditioner and cause a malfunction and breakdown. Or the air-conditioner might influence medical equipments or telecommunication equipments, and obstruct their medical activity or cause jamming.

Do not install the remote control at the direct sunlight.

It could cause breakdown or deformation of the remote control.


· Places where flammable gas could leak.· Places where carbon fiber, metal powder or any powder is floated.· Place where the substances which affect the air-conditioner are generated such as sulfide gas, chloride gas, acid, alkali or ammonic atmospheres.· Places exposed to oil mist or steam directly.· On vehicles and ships· Places where machinery which generates high harmonics is used.



Do not put any valuables which will break down by getting wet under the air-conditioner.





If sputter entered into the unit during brazing work, it could cause damage (pinhole) of drain pan and leakage of water. To avoid damaging, keep the indoor unit packed or cover the indoor unit.







For drain pipe installation, be sure to make descending slope of greater than 1/100, not to make traps, and not to make air-bleeding.
















Do not clean up the air-conditioner with water.










SAFETY PRECAUTIONS

PJA012D786B B(4) 4way ceiling cassette type (FDTC)

Models FDTC25VF, 35VF, 50VF, 60VF

- 128 -

'15 • SCM-T-186

① Before installationInstall correctly according to the installation manual.Confirm the following points:

Unit type/Power source specification Pipes/Wires/Small parts Accessory items

Accessory itmeFor unit hanging For refrigerant pipe For draom pipe

Flat washer (M10)

Level gauge(Insulation)

Pipe cover(big)Pipe cover

(small)Strap Pipe cover(big) Pipe cover(small) Drain hose Hose clamp

8 4 1 1 4 1 1 1 1

For unit hangingFor adjustment in hoisting in the unit's main body

For heat insulationof gas pipe

For heat insulationof liquid tube

For pipe cover fixing

For heat insulationof drain socket

For heat insulationof drain socket

For drain pipe connecting

For drain hosemounting

② Selection of installation location for the indoor unit1Select the suitable areas to install the unit under approval of the user. Areas where the indoor unit can deliver hot and cold wind sufficiently. Suggest to the user to use

a circulator if the ceiling height is over 3m to avoid warm air being accumulated on the ceiling. Areas where there is enough space to install and service. Areas where it can be drained properly. Areas where drain pipe descending slope can be taken. Areas where there is no obstruction of airflow on both air return grille and air supply port. Areas where fire alarm will not be accidentally activated by the air-conditioner. Areas where the supply air does not short-circuit. Areas where it is not influenced by draft air. Areas not exposed to direct sunlight. Areas where dew point is lower than around 28°C and relative humidity is lower than 80%.

This indoor unit is tested under the condition of JIS (Japan Industrial Standard) high humidity condition and confirmed there is no problem. However, there is some risk of condensation drop if the air-conditioner is operated under the severer condition than mentioned above.If there is a possibility to use it under such a condition, attach additional insulation of 10 to 20mm thick for entire surface of indoor unit, refrigeration pipe and drain pipe. Areas where TV and radio stays away more than 1m. (It could cause jamming and noise.) Areas where any items which will be damaged by getting wet are not placed such as food, table

wares, server, or medical equipment under the unit. Areas where there is no influence by the heat which cookware generates. Areas where not exposed to oil mist, powder and/or steam directly such as above fryer. Areas where lighting device such as fluorescent light or incandescent light doesn’t affect the

operation.(A beam from lighting device sometimes affects the infrared receiver for the wireless remote controller and the air conditioner might not work properly.)

2Check if the place where the air-conditioner is installed can hold the weight of the unit. If it is not able to hold, reinforce the structure with boards and beams strong enough to hold it. If the strength is not enough, it could cause injury due to unit falling.

3 If there are 2 units of wireless type, keep them away for more than 5m to avoid malfunction due to cross communication.

4When plural indoor units are installed nearby, keep them away for more than 4m.


When it is not possible to keep enough space between indoor unit and wall or between indoor units, close the air supply port where it is not possible to keep space and confirm there is no short circuit of airflow.Install the indoor unit at a height of more than 2.5m above the floor.

tinuroodnItinuroodnI

WallCeilingsurface

Decorative panel

1000mm or more

4000mm or more

1000mm or more2500mm or more

Obstacle

Floor

③ Preparation before installationIf suspension bolt becomes longer, do reinforcement of earthquake resistant.

For grid ceilingWhen suspension bolt length is over 500mm, or the gap between the ceiling and roof is over 700mm, apply earthquake resistant brace to the bolt.In case the unit is hanged directly from the slab and is installed on the ceiling plane which has enough strength.When suspension bolt length is over 1000mm, apply the earthquake resistant brace to the bolt.

Prepare four (4) sets of suspension bolt, nut and spring washer (M10 or M8) on site.

Ceiling opening, Suspension bolts pitch, Pipe position

④ Installation of indoor unitWork procedure

1. This units is designed for 2 x 2 grid ceiling.If necessary, please detach the T bar temporarily before you install it.If it is installed on a ceiling other than 2 x 2 grid ceiling, provide an inspection port on the control box side.

2. Arrange the suspension bolt at the right position (530mm×530mm). 3. Make sure to use four suspension bolts and fix them so as to be able to hold 500N load.4. Ensure that the lower end of the suspension bolt should be 45mm above the ceiling plane.

Temporarily put the four lower nuts 88mm above the ceiling plane and the upper nuts on distant place from the lower nuts in order not to obstruct hanging the indoor unit or adjust the indoor unit position, and then hang the indoor unit.

T bar Ceilingpanel

Control box

5. Adjust the indoor unit position after hanging it by inserting the level gauge attached on the package into the air supply port and checking if the gap between the ceiling plane and the indoor unit is appropriate. In order to adjust the indoor unit position, adjust the lower nuts while the upper nuts are put on distant place. Confirm there is no backlash between the hanger plate for suspension bolt and the lower nut and washer.

88mm

Suspension bolt

Nut (upper)

Flat washer

Spring washer

Nut (lower)

Ceiling surface

45mm

Refrigerant piping

Drain piping

Level gauge

30 30

Level gaugeT-barCeiling panel (insulation)

Use level gauges asreference, adjust the bottom to the face of the indoor unit.

DiffuserLevel gauge (insulation)

T-barCeiling panel

Use level gauges asreference, adjust the bottom to the face of the indoor unit.

When the ceiling panel comes below the Tbar, align the bottom of the level gauge tothe lower face of the ceiling panel.

Diffuser

Unit

Correct

Unit

Wrong

Touch the nut (lower) and washer without any play

Play is left between the fixtureand the nut (lower) and washer.

A B C E

F

F

F

D

F

6- 4

DE

CBA

Symbol Content

Air outlet openingfor ductingF

Gas pipingLiquid pipingDrain pipingHole for wiringSuspension bolts

Decorative panel

Air supplyAir returngrille

Hanger plate forsuspension bolt

(Installed on site)

Drain hose piece(Accessory)

Controlbox

Holes fortapping screws

Hole

145325□570

45 or

more

13219

2

35

88

210

248

185190 223

326

350

530(Suspension bolts pitch)

530 (Suspension bolts pitch)

556

67

200 48□413□700

21

35

60140

100

100

88

140

586 to 660 (ceiling hole size)

control and the air-conditioner might not work properly.)

- 129 -

'15 • SCM-T-186

6. Make sure to install the indoor unit horizontally. Confirm the levelness of the indoor unit with a level gauge or transparent hose filled with water. Keep the height difference at both ends of the indoor unit within 3mm.

7. Tighten four upper nuts and fix the unit after height and levelness adjustment.

Caution

Do not adjust the height by adjusting upper nuts. It will cause unexpected stress on the indoor unit and it will lead to deformation of the unit, failure of attaching a panel, and generating noise from the fan.Make sure to install the indoor unit horizontally and set the gap between the unit underside and the ceiling plane properly. Improper installation may cause air leakage, dew condensation, water leakage and noise.Even after decorative panel attached, still the unit height can be adjusted finely. Refer to the installation manual for decorative panel for details.Make sure there is no gap between decoration panel and ceiling surface, and between decoration panel and the indoor unit. The gap may cause air leakage, dew condensation and water leakage.In case decorative panel is not installed at the same time, or ceiling material is installed after the unit installed, put the cardboard template for installation attached on the package (packing material of cardboard box) on the bottom of the unit in order to avoid dust coming into the indoor unit.

Indoor unit

hose

Caution

Install the drain pipe according to the installation manual in order to drain properly.

Do not put the drain pipe directly into the ditch where toxic gas such as sulfur, the other harmful and inflammable gas is generated. Toxic gas would flow into the room and it would cause serious

damage to user’s health and safety (some poisoning or deficiency of oxygen). In addition, it may cause corrosion of heat exchanger and bad smell.Connect the pipe securely to avoid water leakage from the joint.Insulate the pipe properly to avoid condensation drop.Check if the water can flow out properly from both the drain outlet on the indoor unit and the end of the drain pipe after installation.Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway. In addition, do not put air vent on the drain pipe. Check if water is drained out properly from the pipe during commissioning. Also, keep sufficient space for inspection and maintenance.

Work procedure

1. Make sure to insert the drain hose (the end mode of soft PVC) to the end of the step part of drain socket.

Attach the hose clamp to the drain hose around 10mm from the end, and fasten the screw within 5mm left to the nut.

Do not apply adhesives on this end.

Drain socket The step part Drain hose

No adhesive allowed Pipe cover (small)(For insulation)

(Accessory)

Unit

pipe cover (big)(For insulation)

(Accessory)

Joint for VP-20(Prepare on site)

Drain socket

Connect

VP-20(Prepare on site)

Pipe cover (small)(For insulation)

(Prepare on site)

Drain hose(Accessory)

Clamp(Accessory

Drain socket

Metal plate

10mm

Hose clamp

Fasten the screw within 5 mm left to the nut.

Drain hose

2. Prepare a joint for connecting VP-20 pipe, adhere and connect the joint to the drain hose (the end made of rigid PVC), and adhere and connect VP-20 pipe (prepare on site).

As for drain pipe, apply VP-20 made of rigid PVC which is on the market.Make sure that the adhesive will not get into the supplied drain hose.It may cause the flexible part broken after the adhesive is dried up and gets rigid.Do not bend or make an excess offset on the drain hose as shown in the picture.Bend or excess offset will cause drain leakage.

Over 20mm

3. Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway.

Pay attention not to give stress on the pipe on the indoor unit side, and support and fix the pipe as close place to the unit as possible when connecting the drain pipe.Do not set up air vent.

Supporting metalNo bump

No trap



Air vent

Insulation material

1.5m ~ 2m


When sharing a drain pipe for more than one unit, lay the main pipe 100mm below the drain outlet of the unit. In addition, select VP-30 or bigger size for main drain pipe.

4. Insulate the drain pipe. Descending stop greater than 1/100

As wide as possible(about100mm)

VP-30 or bigger

Refrigerant pipe

Caution

● Be sure to use new pipes for the refrigerant pipes. Use the flare nut attached to the product or a nut compatible with JIS B 8607, Class 2.Regarding whether existing pipes can be reused or not, and the washing method, refer to the instruction manual of the outdoor unit, catalogue or technical data.1) In case of reuse: Do not use old flare nut, but use the one attached to the unit or compatible with JIS B 8607, Class 2.2) In case of reuse: Flare the end of pipe replaced partially for R410A.

● Use phosphorus deoxidized copper alloy seamless pipe (C1220T specified in JIS H 3300) for refrig-eration pipe installation.　In addition, make sure there is no damage both inside and outside of the pipe, and no harmful

substances such as sulfur, oxide, dust or a contaminant stuck on the pipes. ● Do not use any refrigerant other than R410A.　Using other refrigerant except R410A (R22 etc.) may degrade inside refrigeration oil. And air getting

into refrigeration circuit may cause over-pressure and resultant it may result in bursting, etc.● Store the copper pipes indoors and seal the both end of them until they are brazed in order to avoid

any dust, dirt or water getting into pipe. Otherwise it will cause degradation of refrigeration oil and compressor breakdown, etc.

● Use special tools for R410A refrigerant.

Work procedure

1. Remove the flare nut and blind flanges on the pipe of the indoor unit.※ Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving

torque to the nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them.(Gas may come out at this time, but it is not abnormal.)● Pay attention whether the flare nut pops out. (as the indoor unit is sometimes pressured.)

2. Make a flare on liquid pipe and gas pipe, and connect the refrigeration pipes on the indoor unit.※Bend radius of pipe must be 4D or larger. Once a pipe is bent, do not readjust the bending.

Do not twist a pipe or collapse to 2/3D or smaller.※Do a flare connection as follows:● Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving

torque to the nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them.● When fastening the flare nut, align the refrigeration pipe with the center of flare nut, screw the

nut for 3-4 times by hand and then tighten it by spanner with the specified torque mentioned in the table above. Make sure to hold the pipe on the indoor unit securely by a spanner when tightening the nut in order to avoid unexpected stress on the copper pipe.

3. Cover the flare connection part of the indoor unit with attached insulation material after a gas leakage inspection, and tighten both ends with attached straps.● Make sure to insulate both gas pipes and liquid pipes completely.※ Incomplete insulation may cause dew condensation or water dropping.

● Use heat-resistant (120 °C or more) insulations on the gas side pipes.● In case of using at high humidity condition, reinforce insulation of refrigerant pipes.

Surface of insulation may cause dew condition or water dropping, if insulations are not reinfoced.4. Refrigerant is charged in the outdoor unit. As for the additional refrigerant charge for the indoor unit and piping, refer to the installation

manual attached to the outdoor unit.

Refrigerant pipe (continued) Installation of indoor unit (continued)

DProtrudingdimension

Flare die

dmm

6.35

9.52

12.7

15.88

19.05

For R410A Conventional tool

Pipe dia. Min. pipewall thickness

Protruding dimension for flare, mm

Rigid (Clutch type)Flare O.D. Flare nut

tightening torque

0～ 0.5 0.7～ 1.3

Dmm

8.9～ 9.1

12.8～ 13.2

16.2～ 16.6

19.3～ 19.7

23.6～ 24.0

N·m

14～ 18

34～ 42

49～ 61

68～ 82

100～ 120

mm

0.8

0.8

0.8

1

1.2

<The case of using thicness of insulation is 10mm> <The case of using reinfoced insulation>Pipe cover (Accessory)

Unit Unit

Band (Accessory)Band (Prepare on site)



Band (Accessory)

The thckness of insulation is 10mm

Drain pipe

Refrigerating machine oil should not be applied to the threads of union or external surface of flare. It is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction force on the threads and increase, in turn, the axial component force so that it could crack the flare by the stress corrosion.Refrigerating machine oil may be applied to the internal surface of flare only.

Caution:

- 130 -

'15 • SCM-T-186

Drain test

After installation of drain pipe, make sure that drain system work in good condition and no water leakage from joint and drain pan. Check if the motor sound of drain pump is normal or not.Do drain test even if installation of heating season.For new building cases, make sure to complete the test before hanging the ceiling.

1. Pour water of about 1000cc into the drain pan in the indoor unit by pump so as not to get the electrical component wet.

2. Make sure that water is drained out properly and there is no water leakage from any joints of the drain pipe at the test.Confirm that the water is properly drained out while the drain motor is operating. At the drain socket (transparent), it is possible to check if the water is drained out properly.

3. Unplug the drain plug on the indoor unit to remove remaining water on the drain pan after the test, and re-plug it. And insulate the drain pipe properly finally.

Drain pump operation

In case electrical wiring work finishedDrain pump can be operated by remote controller (wired).For the operation method, refer to Operation for drain pump in the installation manual for wiring work.In case electrical wiring work not finished

Drain pump will run continuously when the dip switch“SW7-1” on the indoor unit PCB is turned ON, the Connector CNB is disconnected, and then the power source (220-240VAC on the terminal block [① and②] or [ Ⓛ and Ⓝ ] ) is turned ON.

Make sure to turn OFF “SW7-1” and reconnect the Connector CNB after the test.

Drain plug

Electrical installation work must be performed according to the installation manual by an electrical installation service provider qualified by a power provider of the country, and be executed according to the technical standards and other regulations applicable to electrical installation in the country.

Be sure to use an exclusive circuit.Use specified cord, fasten the wiring to the terminal securely, and hold the cord securely in order not to apply unexpected stress on the terminal.Do not put both power source line and signal line on the same route. It may cause miscommunication and malfunction.Be sure to do D type earth work.For the details of electrical wiring work, see attached instruction manual for electrical wiring work.

1. Remove a lid of the control box (1 screws).2. Hold each wiring inside the unit and fasten them to terminal block securely.3. Fix the wiring with clamp.4. Install a lid of the control box back to original place.

4. Insulate the drain pipe.Be sure to insulate the drain socket and rigid PVC pipe installed indoors otherwise it may cause dew condensation and water leakage.

After drainage test implementation, cover the drain socket part with pipe cover (small size), then use the pipe cover (big size) to cover the pipe cover (small size), clamps and part of the drain hose, and fix and wrap it with tapes to wrap and make joint part gapless.

Drain up

The position for drain pipe outlet can be raised up to 600mm above the ceiling. Use elbows for installation to avoid obstacles inside ceiling. If the horizontal drain pipe is too long before vertical pipe, the backflow of water will increase when the unit is stopped, and it may cause overflow of water from the drain pan on the indoor unit. In order to avoid overflow, keep the horizontal pipe length and offset of the pipe within the limit shown in the figure below.

Drain hose

600m

m o

r les

s

Joint for VP-20(Prepare on site)

295 to 325mm 100 or less

Attach the panel on the indoor unit after electrical wiring work.Refer to attached manual for panel installation for details.

After wiring work finished, install the panel on the indoor unit.Refer to attached panel installation manual for details.

Accessory items

1 Hook 1 piece For fixing temporarily

2 Chain 2 pieces

3 Bolt 4 pieces For installing the panel

4 Screw 1 piece For attaching a hook5 Screw 2 pieces For attaching a chain

Check the following items after all installation work completed.

Check if Expected trouble CheckThe indoor and outdoor units are fixed securely? Falling, vibration, noiseInspection for leakage is done? Insufficient capacityInsulation work is properly done? Water leakageWater is drained properly? Water leakageSupply voltage is same as mentioned in the model name plate? PCB burnt out, not working at allThere is mis-wiring or mis-connection of piping? PCB burnt out, not working at allEarth wiring is connected properly? Electric shockCable size comply with specified size? PCB burnt out, not working at allAny obstacle blocks airflow on air inlet and outlet? Insufficient capacity

Drain pipe (continued)

Wiring-out position and wiring connection

Main fuse

Signal side terminal block

Power source sideterminal block

Earth

Remote control line

Wiring clamp

Wiring between indoorand outdoor unit

Drain pump can be operated by remote control (wired).

Single spilit (PAC) series

Panel installation

Check list after installation

Main fuse

Signal side terminal block

Power source sideterminal block

Earth

Remote control line

Signal line (shielded cord)

Wiring clamp

Earth (signal line)

Indoor power souce line

Wiring-out position and wiring connection (continued)

VRF (KX) series

Main fuse specificationSpecification Part No.

T3.15A L250V SSA564A149

- 131 -

'15 • SCM-T-186

source

-

PJA012D783

- 132 -

'15 • SCM-T-186

5

7

Note : This function is not able to be set with wireless remote controls or simple remote control (RCH-H3).

5

7

-

For setting the swing range of other louvers, return to 1 and proceed same procedure respectively.

- 133 -

'15 • SCM-T-186

INSTALLATION MANUAL FOR CEILING SUSPENDED

TYPE (FDE)

This manual is for the installation of an indoor unit.For remote control installation, refer to page 384. For wireless kit installation, refer to page 400. For electrical wiring work (Outdoor) and refrigerant pipe work instal-lation for outdoor unit, refer to page 30.

SAFETY PRECAUTIONS

WARNING

CAUTION



The meanings of “Marks” used here are as shown as follows:


CAUTION


CAUTION

















































Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth wiring. Improper earth could cause unit failure, electric shock and fire due to a short circuit.


If the earth leakage breaker is not installed, it can cause fire and electric shocks.





























































PFA012D621D B(5) Ceiling suspended type (FDEN)

Model FDEN50VF

- 134 -

'15 • SCM-T-186

①Before installation

Air return grilleAccessoriesare inside.

235(Liquid piping)

195(Gas piping)

271110 76

135

75

10

109

53 53

Unit interior10 mm slope

Gaspiping

Liquidpiping

Refrigerant line

Drain piping(right)

Drain piping (left)

Blowout opening

Wall

215

290

690

24 24BA

Grille upside

(Indoor unit)

Filter

Pin Side panel screw (1 each on the left and right) (M4)

Side panel

Indoorunit

Hanging plate

Unscrew 8-12mm

Hanging plate screw

Hangingplate fixing bolts(M8)

Hanging plate

4000~5000mm or more

100mmor more

300m

m o

r mor

e

150mm or more

5mm or more

Obstacle

60100

27

Rear outlet

8498

Top cover Drain line(left)

Rear cover

Cutout parts

108

6047

120 175

19

2731

Drain line(rear left)

Top outlet

Right outlet

Remove the line

Location of pipe outlets

Pipe position

Pitch of suspension bolts

The outlet through which the pipings are taken out is available in three directions.Pipes can be taken out in 3 directions (rear, right or top).

Cut out holes using nippers, etc. Cut out holes to take out pipes along the cutoff line on the rear cover. Cut out the top face cover aligning to the piping position. When taking pipe out to right-hand side, cut out a hole along the groove at the inside of side panel. After installing pipes and wires, seal clearances around pipes and wires with putty, etc. to shut off dust.

Make sure to install the covers at rear and top in order to protect the inside of unit from intrusion of dust or protect wires from damages by sharp edges. When taking them out to the right-hand side, remove burrs or sharp edges from the cutout.

①Before installation ③Preparation before installation (continued)

②Selection of installation location for the indoor unit

Accessory item

For unit hanging For refrigerant pipe

Flat washer (M10) Paper pattern Pipe cover (large) Pipe cover (small) Strap

8 1 1 1 4

For unit hanging For heat insulation of gas pipe

For heat insulation of liquid pipe

For fixing of pipecover

For unit hanging and adjustment

③Preparation before installation

Pitch of suspension bolts and pipe position

1. Remove the air return grille.

Slide stoppers (4 places) of the catches, then pull out the pins ( 4 or 6 places).

3. Remove the hanging plate.

Remove the screw, and then loosen the fixing bolts.

2. Remove the side panel.

Remove the screw and detach the side panel by sliding it toward the direction indicated by the arrow mark.

Move the box as close to the installation area as possible packed.If it must be unpacked, wrap the unit with a nylon sling, and be careful not to damage the unit.If you need to lay the unit on a floor after unpacking, always put it with the intake grille facing upward.

Series type A B

40 to 50type 1070 1022

60 to 71type 1320 1272

100 to 140type 1620 1572

36 to 56type 1070 1022

71type 1320 1272

112 to 140type 1620 1572

Single Split (PAC)series

VRF (KX) series

For drain pipeDrain hose

(with clamp) Hose clamp Fixing bracket Screw Heay insulation

1 1 2 1

For drain hoseFor drain pipeconnection

For fixing ofdrain hose

1

For drain hose mounting

For installing offixing bracket

For air return grille

Screw

4

For fixing airreturn grille

Preparation before instalation

④Remote control

Installation of remote control

Up to two receiver or wired remote control can be installed in one indoor unit group.


Haulage

① Select the suitable areas to install the unit under approval of the user.Areas where the indoor unit can deliver hot and cold wind sufficiently. Suggest to the user to use a circulator if the ceiling height is over 3m to avoid warm air being accumulated on the ceiling.Areas where there is enough space to install and service.Areas where it can be drained properly. Areas where drain pipe descend-ing slope can be taken.Areas where there is no obstruction of airflow on both air return grille and air supply port.Areas where fire alarm will not be accidentally activated by the air-conditioner.Areas where the supply air does not short-circuit.Areas where it is not influenced by draft air.Areas not exposed to direct sunlight.Areas where dew point is lower than around 23°C and relative humidity is lower than 80%.

This indoor unit is tested under the condition of JIS (Japan Industrial Stan-dard) high humidity condition and confirmed there is no problem. How-ever, there is some risk of condensation drop if the air-conditioner is oper-ated under the severer condition than mentioned above.Areas where TV and radio stays away more than 1m. (It could cause jamming and noise.)Areas where any items which will be damaged by getting wet are not placed such as food, table wares, server, or medical equipment under the unit.Areas where there is no influence by the heat which cookware generates.Areas where not exposed to oil mist, powder and/or steam directly such as above fryer.Areas where lighting device such as fluorescent light or incandescent light doesn’t affect the operation.(A beam from lighting device sometimes affects the infrared receiver for the wireless remote control and the air-conditioner might not work properly.)

② Check if the place where the air-conditioner is installed can hold the weight of the unit. If it is not able to hold, reinforce the structure with boards and beams strong enough to hold it. If the strength is not enough, it could cause injury due to unit falling.

③ If there are 2 units of wireless type, keep them away for more than 6m to avoid malfunction due to cross communication.

④ When plural indoor units are installed nearby, keep them away for more than 4 to 5m.

(mm)

Install correctly according to the installation manual.Confirm the following points:


If suspension bolt becomes longer, do reinforcement of earthquake resistant.For grid ceilingWhen suspension bolt length is over 500mm, or the gap between the ceiling and roof is over 700mm, apply earthquake resistant brace to the bolt.In case the unit is hanged directly from the slab and is installed on the ceiling plane which has enough strength.When suspension bolt length is over 1000mm, apply the earthquake resistant brace to the bolt.

Prepare four (4) sets of suspension bolt, nut and spring washer (M10) on site.

When both wired and wireless remote control are used

It is necessary to set wired or wireless remote control as slave.

(For the method of changing the setting, refer to the installtion

manual attached to remote control or wireless kit.)

When wired remote control are used only (wireless type)

It is necessary to remove the line that is connected to the receiver.

Remove signal line connected to the receiver from primary side of terminal block (X, Y).

ATTENTION

①Insulate with tape the removed line.

②The LED of that removed connector will not be able to make any indication.

- 135 -

'15 • SCM-T-186

Work procedure

1. Select the suspension bolt locations and the pipe hole location. (1) Use enclosed paper pattern as a reference, and

drill the holes for the suspension bolts and pipe.Decide the locations based on direct measurements.

(2) Once the locations are properly placed, the paper pattern can be removed.

2. Install the suspension bolts in place.

3. Fix with 4 suspension bolts, which can endure load of 500N.

4. Check the measurements given at the right figure for the length of the suspension bolts.

Paper pattern

Ceiling

Suspension bolt

25 m

m o

r mor

e45

mm

or l

ess

Hanging plate

Air supply<When installed against a ceiling material,>

Please fasten firmly with double nuts.

Hanging plate

Unit

Suspension bolt

Ceiling surfaceWasher (accessory)

Double nuts

<No ceiling material to install against,>

Hanging plate

Unit

Suspension bolt

Nut

Washer (accessory)

Double nuts

Fastenat the front end of anelon-gatedhole.

Hanging plate

Screw for hangingplate (M4)

Fixing bolts (M8)

0~3m

m

0~3m

m

(For left-side drain connection, give the reverse slope.)

⑤Installation of indoor unit

5. Fasten the hanging plate onto the suspension bolts.

6. Install the unit to the hanging plate. (1) Slide the unit in from front side to get it

hanged on the hanging plate with the bolts. (2) Fasten the four fixing bolts (M8: 2

each on the left and right sides) firmly. (3) Fasten the two screws (M4: 1 each on

the left and right sides).WARNINIG : Hang a side panel on from the

panel side to the rear side and then fasten it securely onto the indoor unit with screws.

To ensure smooth drain flow, install the unit with a descending slope toward the drain outlet.CAUTION : Do not give the reversed slope, which may cause water leaks.

⑥Refrigerant pipe

●Be sure to use new pipes for the refrigerant pipes. Use the flare nut attached to the product or a nut compatible with JIS B 8607, Class 2.Regarding whether existing pipes can be reused or not, and the washing method, refer to the instruction manual of the outdoor unit, catalogue or technical data.1) In case of reuse: Do not use old flare nut, but use the one attached to the unit or compatible with JIS B 8607, Class 2.2) In case of reuse: Flare the end of pipe replaced partially for R410A.

●Use phosphorus deoxidized copper alloy seamless pipe (C1220T specified in JIS H 3300) for refrigeration pipe installation.　In addition, make sure there is no damage both inside and outside of the pipe, and no harmful

substances such as sulfur, oxide, dust or a contaminant stuck on the pipes.●Do not use any refrigerant other than R410A.　Using other refrigerant except R410A (R22 etc.) may degrade inside refrigeration oil. And air getting into

refrigeration circuit may cause over-pressure and resultant it may result in bursting, etc.●Store the copper pipes indoors and seal the both end of them until they are brazed in order to avoid any dust, dirt or

water getting into pipe. Otherwise it will cause degradation of refrigeration oil and compressor breakdown, etc.●Use special tools for R410A refrigerant.

Caution


Flare die

dmm

6.35

9.52

12.7

15.88

19.05





tightening torque

0～ 0.5 0.7～ 1.3

Dmm

8.9～ 9.1

12.8～ 13.2

16.2～ 16.6

19.3～ 19.7

23.6～ 24.0

N·m

14～ 18

34～ 42

49～ 61

68～ 82

100～ 120

mm

0.8

0.8

0.8

1

1.2

1. Remove the flare nut and blind flanges on the pipe of the indoor unit.※ Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving torque to the

nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them.(Gas may come out at this time, but it is not abnormal.)● Pay attention whether the flare nut pops out. (as the indoor unit is sometimes pressured.)



torque to the nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them.

● When fastening the flare nut, align the refrigeration pipe with the center of flare nut, screw the nut for 3-4 times by hand and then tighten it by spanner with the specified torque mentioned in the table above. Make sure to hold the pipe on the indoor unit securely by a spanner when tightening the nut in order to avoid unexpected stress on the copper pipe.




Work procedure

Bracket

Pipe

Remove

Cut

Drainsocket

Heat insulation material

Drain hose (accessory) VP-20(prepare on site)Clamp (accessory)

To be a descending angle

No bumps

No traps

Not to be in water

Drain hose

Lowest point

Hose clampIt can be attached from both inside and outside the unit.

10m

m

⑦Drain pipe

Work procedure

1. Insert drain hose completely to the base, and tighten the drain hose clamp securely. ( adhesive must not be used.)

When plumbing on the left side, move the rubber plug and the cylindrical insulating materials by the pipe connecting hole on the left side of the unit to the right side.

Beware of a possible outflow of water that may occur upon removal of a drain plug.2. Fix the drain hose at the lowest point with a

hose clamp supplied as an accessory.Give a drain hose a gradient of 10mm as illustrated in the right drawing by laying it without leaving a slack.Take head of electrical cables so that they may not run beneath the drain hose.

A drain hose must be clamped down with a hose clamp. There is a possibility that drain water overflows.3. Connect VP-20(prepare on site) to drain hose. (adhesive must not be used.)

Use commercially available rigid PVC general pipe VP-20 for drain pipe.4. Do not to make the up-down bending and trap in the mid-way while assum-

ing that the drain pipes is downhill. (more than 1/100)Never set up air vent.

5. Insulate the drain pipe.Insulate the drain hose clamp with the heat insulation supplied as accessories.When the unit is installed in a humid place, consider precautions against dew condensation such as heat insulation for the drain pipe.

The drain pipes may face out towards the back to the left, or to the right side.

Caution

Install the drain pipe according to the installation manual in order to drain properly. Imperfection in draining may cause flood indoors and wetting the household goods etc.

Do not put the drain pipe directly into the ditch where toxic gas such as sulfur, the other harmful andinflammable gas is generated. Toxic gas would flow into the room and it would cause serious damage to user’s health and safety (some poisoning or deficiency of oxygen). In addition, it may cause corrosion of heat exchanger and bad smell.Connect the pipe securely to avoid water leakage from the joint.Insulate the pipe properly to avoid condensation drop.Check if the water can flow out properly from both the drain outlet on the indoor unit and the end of the drain pipe after installation.Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway. In addition, do not put air vent on the drain pipe. Check if water is drained out properly from the pipe during commissioning. Also, keep sufficient space for inspection and maintenance.

The pipe can be connected from three different directions. (back, reight, top)

⑥Refrigerant pipe (continued)

When the pipe is routed through the back.If the bracket is removed, piping work will become easy.

After piping, reinstall the removed bracket.

When the pipe is routed through the back.Cut the removed top cover, and install to the rear panel instead of rear cover.

4. Refrigerant is charged in the outdoor unit. As for the additional refrigerant charge for the indoor unit and piping, refer to the installation



Unit Unit




Band (Accessory)


Refrigerating machine oil should not be applied to the threads of union or external surface of flare. It is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction force on the threads and increase, in turn, the axial component force so that it could crack the flare by the stress corrosion.Refrigerating machine oil may be applied to the internal surface of flare only.

Caution:

- 136 -

'15 • SCM-T-186

(downwards)

(horizontal)

the position of the louver

Lowerposition

Movablerange

Upperposition

1

10

⑪How to set the airflow direction

It is possible to change the movable range of the louver on the air outlet from the wired remote control. Once the top and bottom position is set, the louver will swing within the range between the top and the bottom when swing operation is chosen. It is also possible to apply different setting to each louver.1. Stop the air-conditioner and press SET button and

LOUVER button simultaneously for three seconds ormore.

The following is displayed if the number of the indoor units connected to the remote control is one. Go to step 4.

The following is displayed if the number of the indoor units connected to the remote control are more than one.

2. Press or button.(selection of indoor unit) Select the indoor unit of which the louver is set.

3. Press SET button.(determination of indoor unit) Selected indoor unit is fixed.

4. Press or button.(selection of louver No.) Select the louver No. to be set according to the right figure.

5. Press SET button.(Determination of louver No.)The louver No. to be set is confirmed and the display shows the upper limit of the movable range.

6. Press or button.(selection of upper limit position)Select the upper limit of louver movable range.“position 1” is the most horizontal, and “position 6” is the most downward.“position --” is to return to the factory setting.If you need to change the setting to the default setting, use “position --”.

7. Press SET button.(Fixing of the upper limit position)The upper limit position is fixed and the setting position is displayed for two seconds. Then proceed to lower limit position selection display.

8. Press or button.(Selection of lower limit position)Select the lower limit position of louver.“position 1” is the most horizontal, and “position 6 ”is the most downwards.“position --” is to return to the factory setting. If you need to change the setting to the default setting, use “position --”.

9. Press SET button.(Fixing of the lower limit position)Upper limit position and lower limit position are fixed, and the set positions are displayed for two seconds, then setting is completed.

After the setting is completed, the louver which was set moves from the original position to the lower limit position, and goes back to the original position again. (This operation is not performed if the indoor unit and/or indoor unit fan is in operation.)

10.Press button.Louver adjusting mode ends and returns to the original display.

When plural remote controls are connected, louver setting operation cannot be set by slave remote control.

“ ”

“ ”

“ ”

“ ”

[EXAMPLE]

“ ” (displayed for two seconds)

“ ”

“ ”

[EXAMPLE] If No.1 louver is selected,

“ ” ←current upper limit position

“ ” (the most horizotal)

⇔ “ ”

⇔ “ ”

⇔ “ ”

⇔ “ ”

⇔ “ ” (the most downwards)

⇔ “ ” (return to the default setting)

[EXAMPLE]

“ ”⇔ “ ”⇔ “ ”⇔“ ”

(the most horizontal)

(the most downwards)

(return to the default setting)

[EXAMPLE]

(shows current setting)

(displayed for two seconds)

Caution

If the upper limit position number and the lower limit position number are set to the same position, the louver is fixed at that position auto swing does not funtion.

ATTENTION

If you press RESET button during settings, the display will return to previous display.If you pressbutton during settings, the mode will be ended and return to original display, and the settings that have not been completed will become invalid.

[EXAMPLE]

“ ”⇔“ ”⇔

“ ”

”⇔“

[Example]

(displayed for two seconds)

ChainChain

ChainFix with screws

⑩Check list after installation

Check if Expected trouble Check

The indoor and outdoor units are fixed securely? Falling, vibration, noise

Inspection for leakage is done? Insufficient capacity

Insulation work is properly done? Water leakage

Water is drained properly? Water leakage

Supply voltage is same as mentioned in the model name plate? PCB burnt out, not working at all

There is mis-wiring or mis-connection of piping? PCB burnt out, not working at all

Earth wiring is connected properly? Electric shock

Cable size comply with specified size? PCB burnt out, not working at all

Any obstacle blocks airflow on air inlet and outlet? Insufficient capacity

Check the following items after all installation work completed.

⑦Drain pipe (continued)

Drain test

After installation of drain pipe, make sure that drain system work in good condition and no water leakage from joint and drain pan. Do drain test even if installation of heating season.

⑨Attaching the air return grille

The air return grille must be attached when electrical cabling work is completed.

1. Fix the chains tied to the air return grille onto the indoor unit with screws supplied as accessories (4 pieces).

2. Close the air return grille.This completes the unit installtion work.

⑧Wiring-out position and wiring connection

Electrical installation work must be performed according to the installation manual by an electrical installation service provider qualified by a power provider of the country, and be executed according to the technical standards and other regulations applicable to electrical installation in the country.

Be sure to use an exclusive circuit.Use specified cord, fasten the wiring to the terminal securely, and hold the cord securely in order not to apply unexpected stress on the terminal.Do not put both power source line and signal line on the same route. It may cause miscommunication and malfunction.Be sure to do D type earth work.For the details of electrical wiring work, see attached instruction manual for electrical wiring work.

1. Remove a lid of the electrical box (2 screws).2. Hold each wiring inside the unit and connect to a terminal block surely.3. Fix the wiring by clamps.4. Install the removed parts back to original place.

Single split (PAC) series

VRF(KX) series

Main fuse specificationSpecification

T3.15A L250V

Port No.

SSA564A116G

Remote controlline

Power sourceside terminalblock

Power sourceside terminalblock

Earth

Earth

Wiring clamp

Wiring clamp

Remote control line

Wiring between indoorand outdoor unit

Signal side terminal blockWireless receiver line

Signal side terminal blockWireless receiver line

Signal line(shielded cord)

Indoor powersource line

Main fuse

Main fuse

- 137 -

'15 • SCM-T-186

DUCT CONNECTED MIDDLE STATIC PRESSURE AIR

CONDITIONING UNIT INSTALLATION MANUAL

This manual is for the installation of an indoor unit.For remote control installation, refer to page 384. For wireless kit installation, refer to page 404. For electrical wiring work (Outdoor) and refrigerant pipe work installation for outdoor unit, refer to page 30.

SAFETY PRECAUTIONS

WARNING

CAUTION



The meanings of “Marks” used here are as shown on the right:






Check the density refered by the foumula (accordance with ISO5149).

If the density exceeds the limit density, please consult the dealer and installate the ventilation system.










































Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth wiring. Improper earth could cause unit failure and electric shock or fire due to a short circuit.


If the earth leakage breaker is not installed, it could cause electric shocks or fire.




























































Never do it under any circumstances. Always do it according to the instruction.

CAUTION

CAUTION

PJG012D008C D

(6) Duct connected Low / Middle static pressure type (FDUM)

(a) Indoor unit

- 138 -

'15 • SCM-T-186

A

28B

C

Preparation before installation

Selection of installation location for the indoor unit

Select the suitable areas to install the unit under approval of the user.Areas where the indoor unit can deliver hot and cold wind sufficiently. Suggest to the user to use a circulator if the ceiling height is over 3m to avoid warm air being accumulated on the ceiling.Areas where there is enough space to install and service.Areas where it can be drained properly. Areas where drain pipe descending slope can be taken.Areas where there is no obstruction of airflow on both air return grille and air supply port.Areas where fire alarm will not be accidentally activated by the air-conditioner.Areas where the supply air does not short-circuit.Areas where it is not influenced by draft air.Areas not exposed to direct sunlight.Areas where dew point is lower than around 28°C and relative humidity is lower than 80%.This indoor unit is tested under the condition of JIS (Japan Industrial Standard) high humidity condition and confirmed there is no problem. However, there is some risk of condensation drop if the air-conditioner is operated under the severer condition than mentioned above.If there is a possibility to use it under such a condition, attach additional insulation of 10 to 20mm thick for entire surface of indoor unit, refrigeration pipe and drain pipe.Areas where TV and radio stays away more than 1m. (It could cause jamming and noise.)Areas where any items which will be damaged by getting wet are not placed such as food, table wares, server, or medical equipment under the unit.Areas where there is no influence by the heat which cookware generates.Areas where not exposed to oil mist, powder and/or steam directly such as above fryer.Areas where lighting device such as fluorescent light or incandescent light doesn’t affect

the operation.(A beam from lighting device sometimes affects the infrared receiver for the wireless remote control and the air-conditioner might not work properly.)

Check if the place where the air-conditioner is installed can hold the weight of the unit. If it is not able to hold, reinforce the structure with boards and beams strong enough to hold it. If the strength is not enough, it could cause injury due to unit falling.


Make installation altitude over 2.5m.(Indoor Unit)Select either of two cases to keep space for installation and services.

Notes (a) There must not be obstacle to draw out fan motor. ( marked area) (b) Install refrigerant pipe, drain pipe, and wiring so as not to cross marked area.

If suspension bolt becomes longer, do reinforcement of earthquake resistant.For grid ceilingWhen the suspension bolt length is over 500mm, or the gap between the ceiling and roof is over 700mm, apply earthquake resistant brace to the bolt.In case the unit is hanged directly from the slab and is installed on the ceiling plane which has enough strength.When suspension bolt length is over 1000mm, apply the earthquake resistant brace to the bolt.

Prepare four (4) sets of suspension bolt, nut and spring washer (M10) on site.

This model is middle static ducted type air-conditioning unit. Therefore, do not use this model for direct blow type air-conditioning unit.

Suspension Bolt Location

Adhere to the measurements given below for the length of the suspension bolts.

Suspensionbolt (M10)

Return duct

Air supply duct

Unit

Unde

r60

mm

UNIT: mmMulti typeSingle type

ABC

22-5640-50786472135

71, 9060, 71

986472135

112-160100-140

1404530180

Installation

[Hanging]Hang the unit up.

Adjustment for horizontality

Either use a level vial, or adjust the level according to the method below.

Adjust so the bottom side of the unit will be leveled with the water surface as illustrated below.

If the unit is not leveled, it may cause malfunctions or inoperation of the float switch.

Pipe side

Pour waterWatersurface

0~5mmVinyl hose

Let the pipe side be slightly sloped.

Installation of indoor unit

M10 nut

Suspension bolt

Spring washer for M10Unit

Washer for M10If the measurements between the unit and the ceiling hole do not match upon installation, it may be adjusted with the long holed installation tool.

Multi typeSingle type

112-160100-140

Pipe locations UNIT: mm

Multi typeSingle type

22-9040-71

Before installation

Install correctly according to the installation manual.Confirm the following points:


Accessory item

Accessory parts are storedinside this suction side.

For refrigerant pipe For drain pipe

Pipe cover (big) Pipe cover (small) Pipe cover (big) Pipe cover (small) Drain hose Hose clampStrap

1 1 4 1 1 1 1

For heat insulation of gas pipe

For heat insulation of liquid tube

For pipecover fixing

For hanging

Flat washer (M10)

8

For unithanging

For drain hosemounting

For heat insulation of drain socket

For heat insulation of drain socket

For drain pipe connecting

Single typeMulti type

AB

(Size of inspection hole)40-5022-561100

60-7171-901300

100-140112-160

1720725

(For natural drainage)drain pipe connection VP20 (PVC pipe)

drain pipe connection (PVC pipe) (Drain hose VP25)

510

635468

405

467

187

145

9529

471413

203

174

104

29 467



(For natural drainage)drain pipe connection VP20 (PVC pipe)

drain pipe connection(PVC pipe) (Drain hose VP25)



(Case 2) From bottom of unit

(Case 1) From side of unit

600

or m

ore

100

or m

ore

100

or m

ore

20 or m

ore

20or

mor

e

A

B

Inspectionhole

Note (a)

Note (b)

100-200

370

150-

200

Ceiling

SlabInspectionhole(450x450)

1000

or m

ore

UNIT: mm

UNIT: mm

UNIT: mm

620

- 139 -

'15 • SCM-T-186

Duct Work (continued)Duct Work

Connecting the air intake/vent ducts

Fresh Air Intake[for air intake duct only]

Use the side fresh air intake hole, or supply through a part of the suction duct.

[for simultaneous air intake/vent]Intake air through the suction duct.

(the side cannot be used)

Air VentUse the side air vent hole.

(always use together with the air intake)

Insulate the duct to protect it from dew condensation.

A corrugated board (for preventing sputtering) is attached to the main body of the air-conditioner (on the outlet port). Do not remove it until connecting the duct.An air filter can be provided on the main body of the air-conditioner (on the inlet port). Remove it when connecting the duct on the inlet port.

Blowout ductUse rectangular duct to connect with unit.Duct size for each unit is as shown below.

Duct should be at their minimum length.We recommend to use sound and heat insulated duct to prevent it from condensation.Connect duct to unit before ceiling attachment.

Inlet portWhen shipped the inlet port lies on the back.When connecting the duct to the inlet port, remove the air filter if it is fitted to the inlet port.When placing the inlet port to carry out suction from the bottom side, use the following procedure to replace the suction duct joint and the bottom plate.

Remove the screws which fasten the Replace the removed bottom plate

bottom plate and the duct joint on the and duct joint.

inlet port side of the unit.

Fit the duct join with a screw; fit the bottom plate.

Make sure to insulate the duct to prevent dewing on it.Install the specific blowout duct in a location where the air will circulate to the entire room.

Conduct the installation of the specific blowout hole and the connection of the duct before attaching them to the ceiling.Insulate the area where the duct is secured by a band for dew condensation prevention.

Make sure provide an inspection hole on the ceiling. It is indispensable to service electric equipment, motor, functional components and cleaning of heat exchanger.

If a duct is not provided at the suction side but it is substituted with the space over the ceiling, humidity in the space will increase by the influence of capacity of ventilation fan, strength of wind blowing against the out door air louver, weather (rainy day) and others.

a)Moisture in air is likely to condense over the external plates of the unit and to drip on the ceiling. Unit should be operated under the conditions as listed in the above table and within the limitation of wind volume. When the building is a concrete structure, especially immedi-ately after the construction, humidity tends to rise even if the space over the ceiling is not substituted in place of a duct. In such occasion, it is necessary to insulate the entire unit with glass wool (25mm). (Use a wire net or equivalent to hold the glass wool in place.)

b)It may run out the allowable limit of unit operation (Example: When outdoor air temperature is 35°C DB, suction air temperature is 27°C WB) and it could result in such troubles as compressor overload, etc..

c)There is a possibility that the blow air volume may exceed the allowable range of operation due to the capacity of ventilation fan or strength of wind blowing against external air louver so that drainage from be heat exchanger may fall to reach the drain pan but leak outside (Example: drip on to the ceiling) with consequential water leakage in the room.

If vibration damping is not conducted between the unit and the duct, and between the unit and the slab, vibration will be transmitted to the duct and vibration noise may occur. Also, vibration may be transmitted from the unit to the slab. Vibration damping must be performed.

Secure with a band, etc.

Blowoutduct

Air-conditioner main unit

Ceiling suriace

Suction grille(Locality)

Suction hole(marketed item)(with air filter)Inspection hole

Suction duct(marketed item)Blow outlet

Blowout duct(optional or marketed item)

Bad example of duct work

Bad example of duct work

For ventilation

Louver tooutdoor air

(Pip

e si

de)

(Pip

e si

de)

Side fresh air intake hole

Air vent hole

Fresh air intake through thesuction duct


(Pip

e si

de)

Air vent hole


Refrigerant pipe

Single typeMulti type

AB

40-5022-56682172

60-7171-90882172

100-140112-140

1202172

UNIT: mm

●Be sure to use new pipes for the refrigerant pipes. Use the flare nut attached to the product or a nut compatible with JIS B 8607, Class 2.Regarding whether existing pipes can be reused or not, and the washing method, refer to the instruction manual of the outdoor unit, catalogue or technical data.1) In case of reuse: Do not use old flare nut, but use the one attached to the unit or compatible with JIS B 8607, Class 2.2) In case of reuse: Flare the end of pipe replaced partially for R410A.

●Use phosphorus deoxidized copper alloy seamless pipe (C1220T specified in JIS H 3300) for refrigeration pipe installation.　In addition, make sure there is no damage both inside and outside of the pipe, and no harmful

substances such as sulfur, oxide, dust or a contaminant stuck on the pipes.●Do not use any refrigerant other than R410A.　Using other refrigerant except R410A (R22 etc.) may degrade inside refrigeration oil. And air getting into

refrigeration circuit may cause over-pressure and resultant it may result in bursting, etc.

●Store the copper pipes indoors and seal the both end of them until they are brazed in order to avoid any dust, dirt or water getting into pipe. Otherwise it will cause degradation of refrigeration oil and compressor breakdown, etc.●Use special tools for R410A refrigerant.

Piping work

When conducting piping work, make sure to allow the pipes to be aligned in a straight line for at least 250 mm, as shown in the left illustration. (This is necessary for the drain pump to function)

Work procedure

1. Remove the flare nut and blind flanges on the pipe of the indoor unit.※ Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving torque to the

nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them.(Gas may come out at this time, but it is not abnormal.)● Pay attention whether the flare nut pops out. (as the indoor unit is sometimes pressured.)



torque to the nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them.● When fastening the flare nut, align the refrigeration pipe with the center of flare nut, screw

the nut for 3-4 times by hand and then tighten it by spanner with the specified torque mentioned in the table above. Make sure to hold the pipe on the indoor unit securely by a spanner when tightening the nut in order to avoid unexpected stress on the copper pipe.




Caution


Flare die

dmm

6.35

9.52

12.7

15.88

19.05





tightening torque

0～ 0.5 0.7～ 1.3

Dmm

8.9～ 9.1

12.8～ 13.2

16.2～ 16.6

19.3～ 19.7

23.6～ 24.0

N·m

14～ 18

34～ 42

49～ 61

68～ 82

100～ 120

mm

0.8

0.8

0.8

1

1.2

Refrigerant pipe

250mm(Section where attached in a straight line)

- 140 -

'15 • SCM-T-186

Drain pipe (continued)

3. Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway.

Pay attention not to give stress on the pipe on the indoor unit side, and support and fix the pipe as close place to the unit as possible when connecting the drain pipe.Do not set up air vent.

When sharing a drain pipe for more than one unit, lay the main pipe 100mm below the drain outlet of the unit. In addition, select VP-30 or bigger size for main drain pipe.

4. Insulate the drain pipe.Be sure to insulate the drain socket and rigid PVC pipe installed indoors otherwise it may cause dew condensation and water leakage.

After drainage test implementation, cover the drain socket part with pipe cover (small size), then use the pipe cover (big size) to cover the pipe cover (small size), clamps and part of the drain hose, and fix and wrap it with tapes to wrap and make joint part gapless.

Drain up

The position for drain pipe outlet can be raised up to 600mm above the ceiling. Use elbows for installation to avoid obstacles inside ceiling. If the horizontal drain pipe is too long before vertical pipe, the backflow of water will increase when the unit is stopped, and it may cause overflow of water from the drain pan on the indoor unit. In order to avoid overflow, keep the horizontal pipe length and offset of the pipe within the limit shown in the figure below.

Otherwise, the construction point makes it same as drain pipe construction.

Drain test

1. Conduct a drain test after completion of the electrical work.2. During the trail, make sure that drain flows properly through the piping and that no water

leaks from connections.3. In case of a new building, conduct the test before it is furnished with the ceiling.4. Be sure to conduct this test even when the unit is installed in the heating season.

Procedures

1. Supply about 1000 cc of water to the unit through the air outlet by using a feed water pump.2. Check the drain while cooling operation.

Outline of bottom drain piping work

If the bottom drain piping can be done with a descending gradient (1/50-1/100), it is possible to connect the pipes as shown in the drawing below.

Uncoupling the drain motor connector

Uncouple the connector CNR for the drain motor as illustrated in the drawing on the right.

Note: If the unit is run with the connector coupled, drain water will be discharged from the upperdrain pipe joint, causing a water leak.

P.C. board

Insert water supply hosefor 20mm ~ 30mm to supply water.(Insert hose facingtoward bottom.)

Attached drain hose clamp

DrainpipingMain

unitDrain situation can be checked with transparent socket.

If the electrical work has not been completed, connect a convexjoint in the drain pipe connection to provide a water inlet.Then, check if water leaks from the piping system and thatdrain flows through the drain pipe normally.

Pour water into a convex joint

Remove grommetMake sure to Installit back after test.

Connecting port of top drain pipe

Insulating material

Transparent soft tube(Prepare on site)

Rubber stopper (to be removed)

Connecting port of bottom drain pipes(Outside diameter:20mm)

Standard hard polyvinylchloride pipes

( )

600

max

295-325 100 or less

Refrigerant pipe (continued)

4. Refrigerant is charged in the outdoor unit. As for the additional refrigerant charge for the indoor unit and piping, refer to the installation


Caution:Refrigerating machine oil should not be applied to the threads of union or external surface of flare. It is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction force on the threads and increase, in turn, the axial component force so that it could crack the flare by the stress corrosion.Refrigerating machine oil may be applied to the internal surface of flare only.


As wide as possible (about100mm)

Supporting metal

Descending slope greater than 1/100* Please confirm that the pipe doesn’t bend.

Air vent

No bump

No trap



VP-30 or bigger

1m~2m*

PJG012D008C D


Unit Unit




Band (Accessory)


Drain pipe

CautionInstall the drain pipe according to the installation manual in order to drain properly.

Imperfection in draining may cause flood indoors and wetting the household goods, etc.Do not put the drain pipe directly into the ditch where toxic gas such as sulfur, the other harmful and inflammable gas is generated. Toxic gas would flow into the room and it would cause serious damage to user’s health and safety (some poisoning or deficiency of oxygen).In addition, it may cause corrosion of heat exchanger and bad smell.Connect the pipe securely to avoid water leakage from the joint.Insulate the pipe properly to avoid condensation drop.Check if the water can flow out properly from both the drain outlet on the indoor unit and the end of the drain pipe after installation.Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway. In addition, do not put air vent on the drain pipe. Check if water is drained out properly from the pipe during commissioning. Also, keep sufficient space for inspection and maintenance.

Work procedure

1. Make sure to insert the drain hose (the end mode of soft PVC) to the end of the step part of drain socket.

Attach the hose clamp to the drain hose around 10mm from the end, and fasten the screw within 5mm left to the nut.

Do not apply adhesives on this end.Do not use acetone-based adhesives to connect to the drain socket.

2. Prepare a joint for connecting VP-25 pipe, adhere and connect the joint to the drain hose (the end made of rigid PVC), and adhere and connect VP-25 pipe (prepare on site).

As for drain pipe, apply VP-25 made of rigid PVC which is on the market.Make sure that the adhesive will not get into the supplied drain hose.

It may cause the flexible part broken after the adhesive is dried up and gets rigid.The flexible drain hose is intended to absorb a small difference at installation of the unit or drain pipes. Intentional bending, expanding may cause the flexible hose broken and water leakage.

●As for drain pipe, apply VP25 (OD32).If apply PVC25 (OD25), connect the expanded connector to the drain hose, with adhesive. (Multi unit only)

Drain socket

Pipe cover (big) (For insulation)(Accessory)

VP25 joint (Prepare on site)

VP25(Prepare on site)

Pipe cover (small)(For insulation) (Accessory)

Unit

Clamp (Accessory) Pipe cover (small)(For insulation)(Prepare on site)

Drain socket

Metal plate 10mm

Hose clamp

Fasten the screw within5 mm left to the nut.

Drain hose

Drain socket

Drain hose

Stage difflernce part

Drain hose(Accessory)

Adhesion

295～325mm

PVC25 (Prepare on site)

Elbow (Accessory)(Multi only)

Drain hoseIndoor side

Insulation material Insulation material

- 141 -

'15 • SCM-T-186

(b) Replacement procedure of the fan unitNotes (1) The unit is a heavy item. It must be supported securely and handled with care not to drop when it is necessary toreplace.

Notes (2) For the maintenance space, refer to page 138.

(i) Remove the control box and the side panel, and remove the screws marked in the circles (2 places) in the figure.

(ii) Take out the fan unit in the arrow direction.

Control box

Side panel

Screw

Documents

1.5 Application data MULTI TYPE AIR-CONDITIONER