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RCL SERIESLOW SILL CONSOLE
SINGLE SPEED0.75 TON - 1.5 TON
Issue Date: December 3, 2019
R-410A
WATER SOURCE HEAT PUMP
INSTALLATION, OPERATION, MAINTENANCE Supersedes: 146.09-NOM1 (818) Form 146.09-NOM1 (1219)
This equipment is a relatively complicated apparatus. During rigging, installation, operation, maintenance, or service, individuals may be exposed to certain com-ponents or conditions including, but not limited to: heavy objects, refrigerants, materials under pressure, rotating components, and both high and low voltage. Each of these items has the potential, if misused or handled improperly, to cause bodily injury or death. It is the obligation and responsibility of rigging, instal-lation, and operating/service personnel to identify and recognize these inherent hazards, protect themselves, and proceed safely in completing their tasks. Failure to comply with any of these requirements could result in serious damage to the equipment and the property in
IMPORTANT!READ BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
which it is situated, as well as severe personal injury or death to themselves and others at the site.
This document is intended for use by owner-authorized rigging, installation, and operating/service personnel. It is expected that these individuals possess independent training that will enable them to perform their assigned tasks properly and safely. It is essential that, prior to performing any task on this equipment, this individual shall have read and understood the on-product labels, this document and any referenced materials. This in-dividual shall also be familiar with and comply with all applicable industry and governmental standards and regulations pertaining to the task in question.
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to specific situations:
Indicates a possible hazardous situation which will result in death or serious injury if proper care is not taken.
Indicates a potentially hazardous situa-tion which will result in possible injuries or damage to equipment if proper care is not taken.
Identifies a hazard which could lead to damage to the machine, damage to other equipment and/or environmental pollu-tion if proper care is not taken or instruc-tions and are not followed.
Highlights additional information useful to the technician in completing the work being performed properly.
External wiring, unless specified as an optional connection in the manufacturer’s product line, is not to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls and any external wiring must not be installed inside the micro panel. All wiring must be in accordance with the Johnson Controls' published specifications and must be performed only by a qualified electrician. Johnson Controls will NOT be responsible for damage/problems resulting from improper connections to the controls or application of improper control signals. Failure to follow this warning will void the manufacturer’s warranty and cause serious damage to property or personal injury.
WARNING: This product can expose you to chemicals including formaldehyde, which is known to the state of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
RCL SERIES INSTALLATION MANUAL
Table of Contents
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installation Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
System Cleaning and Flushing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Open Loop Ground Water Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Blower Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Unit Startup Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Unit Startup Checklist/Unit Startup Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Compressor and Thermistor Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Refrigerant Circuit Guideline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Heat of Extraction/Rejection Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Reference Calculations and Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Startup/Troubleshooting Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Replacement Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Service Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Revision Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4
RCL SERIES INSTALLATION MANUAL
Model Nomenclature
All RCL Series product is Safety listed under UL1995 thru ETL and performance listed with AHRI in accordance with standard 13256-1.
RCL S
Model Nomenclature
RCL S1-3 5-6 7 8 9
Model Type RCL – RCL Series
Cabinet Configuration C – Chassis Only W – Chassis with Cabinet S – Chassis with Slope Top
Unit Capacity 09, 12, 15, 18
Piping Option L – Left R – Right
Voltage 0 – 208-230/60/1 2 – 265-277/60/1 9 – 115/60/1 (09 & 12 Only)
Unit Control 1 – CCM A – AuroraTM Base Control (ABC) Z – AuroraTM with SMART Equipment DDC
Vintage * - Factory Use Only
Non-Standard Options SS – Standard
Air Coil/Insulation Option 5 – AlumiSealTM/Extended Range 6 – AlumiSealTM/Standard Range 7 – No Coating/Extended Range 8 – No Coating/Standard Range
Sound Kit A – None B – Blanket
Future Option N – None
Future Option N – None
Coax Option C – Copper N – CuproNickel
Thermostat Control 1 – Unit Mounted Thermostat 2 – Remote Wall-Mount Thermostat
10 11 12 1409 L 0 A 1 C N N B
135
15SS
16-17
ypeRCL
Confhassishassisassis
pacity 15, 1
Optionftght
0/60/17/60/11 (09 & 12 Only)
S
figs Os s w
y 18
n
8
S
gOww
Series
gurationOnlywith Cabinetwith Slope Top
18*
Note: Chassis only available with left piping option SMART Equipment option is only available with remote wall-mounted thermostat control. 09-12 only available with PSC blower motor. 15-18 only available with 3-Speed ECM motor.
3
5
RCL SERIES INSTALLATION MANUAL
Safety ConsiderationsWARNING: Before performing service or maintenance operations on a system, turn off main power switches to the indoor unit. If applicable, turn off the accessory heater power switch. Electrical shock could cause personal injury.
Installing and servicing heating and air conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair or service heating and air conditioning equipment. Untrained personnel can perform the basic maintenance functions of cleaning coils and cleaning and replacing filters. All other operations should be performed by trained service personnel. When working on heating and air conditioning equipment, observe precautions in the literature, tags and labels attached to the unit and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use a quenching cloth for brazing operations and have a fire extinguisher available.
Moving and StorageMove units in the normal “up” orientation. Do not stack units. When the equipment is received, all items should be carefully checked against the bill of lading to be sure all crates and cartons have been received. Examine units for shipping damage, removing the units from the packaging if necessary. Units in question should also be internally inspected. If any damage is noted, the carrier should make the proper notation on the delivery receipt, acknowledging the damage.
Water PipingThe proper water flow must be provided to each unit whenever the unit operates. To assure proper flow, use pressure/temperature ports to determine the flow rate. These ports should be located at the supply and return water connections on the unit. The proper flow rate cannot be accurately set without measuring the water pressure drop through the refrigerant-to-water heat exchanger.
All source water connections on commercial units are fittings that accept a male pipe thread (MPT). Insert the connectors by hand, then tighten the fitting with a wrench to provide a leakproof joint. When connecting to an open loop (groundwater) system, thread any copper MPT fitting into the connector and tighten in the same manner as described above.
Refrigerant Systems To maintain sealed circuit integrity, do not install service gauges unless unit operation appears abnormal. Compare the change in temperature on the air side as well as the water side to the Unit Operating Parameters tables. If the unit’s performance is not within the ranges listed, and the airflow and water flow are known to be correct, gauges should then be installed and superheat and subcooling numbers calculated. If superheat and subcooling are outside recommended ranges, an adjustment to the refrigerant charge may be necessary.
General Installation Information
6
RCL SERIES INSTALLATION MANUAL
Dimensional Data - Flat Top Cabinet
Left Hand CabinetRight Hand Cabinet
FRONT
TOP
SIDERight return cabinet shown in dimensional views
A
D E
C
GB
F
Flat TopConfiguration
Overall Cabinet Grille
A B C D E F G
Width Depth HeightGrilleLid
Grille Length
Grille Width
09-12in. 45.1 10.8 22.5 9.2 35.0 6.1 2.3
cm. 114.6 27.4 57.2 23.4 88.9 15.6 5.8
15-18in. 50.0 12.8 22.5 9.2 35.0 6.1 3.3
cm. 127.0 32.4 57.2 23.4 88.9 15.6 8.3
RCLW09-18
7
RCL SERIES INSTALLATION MANUAL
Dimensional Data - Slope Top Cabinet
Left Hand CabinetRight Hand Cabinet
FRONT
TOP
SIDERight return cabinet shown in dimensional views
D E
F
C
A GB
H
80°
Slope TopConfiguration
Overall Cabinet Grille
A B C D E F G H
Width Depth HeightGrilleLid
Grille Length
Grille Width
09-12in. 45.1 10.8 24.0 9.2 35.0 6.1 2.0 22.4
cm. 114.6 27.4 61.0 23.4 88.9 15.6 5.1 56.9
15-18in. 50.0 12.8 24.0 9.2 35.0 6.1 2.0 22.5
cm. 127.0 32.4 61.0 23.4 88.9 15.6 5.1 57.2
RCLS09-18
8
RCL SERIES INSTALLATION MANUAL
Dimensional Data - Chassis
CONDENSATEDRAIN CONNECTION
BLOWER ACCESS PANEL COMPRESSORACCESS PANEL
WATER OUT1/2 in. FPT
WATER IN1/2 in. FPT
9.5
17.6
21.7
10.2
8.6
2.1
0.8
2.1
25.4 AIR FLOW
2.1
2.11.5
38.412.026.3
9.6
17.6
21.7
33.1 AIR FLOW
33.6 9.1
42.7
1.5
1.5
8.6
2.1
2.10
1.0
WATER OUT1/2 in. FPT
WATER IN1/2 in. FPT
12.1
RCLC09-12
RCLC15-18
9
RCL SERIES INSTALLATION MANUAL
Control Panel(Remove For Access
To Control Box)
Wall Mount For Chassisw/Flat Top Cabinets
OptionalFused/
Non-fusedDisconnect
OptionalBall Valves
OptionalHose Kits
Handy Box
Blower Option Switch
Air Filter
Control Panel (Remove ForAccess To Control Box)
Wall Mount For Chassisw/Flat Top Cabinets
OptionalFused/Non-fusedDisconnect
OptionalBall Valves
OptionalHose Kits
Handy Box
Blower Option Switch
Air Filter
Left Return Right Return
Dimensional Data - Controls Detail: Flat Top Chassis
Control Panel (Remove ForAccess To Control Box)
Air FilterAir Filter
Control Panel (Remove ForAccess To Control Box)
Blower Option Switch(On Side Panel)
Blower Option Switch(On Side Panel)
Optional Hose Kits
Optional Hose Kits
Optional Ball Valves
Optional Ball Valves
Optional Fused/Non-fusedDisconnect
Optional Fused/
Non-fusedDisconnect
Wall MountAttached to Unit
Wall MountAttached to Unit
Handy BoxHandy Box
Dimensional Data - Controls Detail: Slope Top Chassis
10
RCL SERIES INSTALLATION MANUAL
Physical Data
ModelConsole
09 12 15 18Compressor (1 each) Rotary
Factory Charge R-410A, oz [kg] 27 [0.77] 27 [0.77] 36 [1.02] 34 [1.0]
Blower Motor & Blower
Blower Motor Type/Speeds 3-SpdECM N/A 3 Speeds
Blower Motor - hp [W] 3-SpdECM N/A 1/4 [186] 1/4 [186]
Blower Wheel Size (Dia x W), in. [mm] 3-SpdECM N/A 6.0 x 6.5
[152 x 165]6.0 x 6.5
[152 x 165]Blower Motor Type/Speeds PSC 2 Speeds N/A
Blower Motor - hp [W] PSC 1/16 [44.7] 1/16 [44.7] N/A
Blower Wheel Size (Dia x W), in. [mm] PSC 5.75 x 5.50 [146 x 140]
5.75 x 5.50 [146 x 140] N/A
Coax and Water Piping
Water Connection Size - FPT - in [mm] 1/2 [12.7] 1/2 [12.7] 1/2 [12.7] 1/2 [12.7]
Coax & Piping Water Volume - gal [l] 0.15 [0.6] 0.18 [0.7] 0.15 [0.6] 0.18 [0.7]
Air Coil
Air Coil Dimensions (H x W), in. [mm] 8 x 22[203 x 559]
8 x 22[203 x 559]
8 x 30[203 x 762]
8 x 30[203 x 762]
Air Coil Total Face Area, ft2 [m2] 1.2 [0.114] 1.2 [0.114] 1.7 [0.16] 1.7 [0.16]
Air Coil Tube Size, in [mm] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5]
Air Coil Number of Rows 3 3 4 4
Filter Standard - Throwaway, in [mm] 23 x 9.6[584 x 244]
23 x 9.6[584 x 244]
32 x 9.6[813 x 244]
32 x 9.6[813 x 244]
Weight - Packaged, lb [kg] 200 [91] 205 [93] 215 [98] 220 [100]12/13/13
11
RCL SERIES INSTALLATION MANUAL
Installation StepsStep 1: Unpack Equipment and Inspect for Damage
Step 2: Determine Equipment Location• Choose level flooring surface (Correctable with shims. Do not pitch towards drain.)• Location of wall support and fasteners required to secure chassis backplate.• Easy access for both installation and service. • Consider availability and ease of wiring, water piping and condensate drain.• No obstructions to block airflow in front of the unit.
Step 3: Mark Unit Position• Ensure that floor is level. If shims are required, make sure that the entire compressor compartment area is uniformly shimmed and that the backplate mounting height is increased by the thickness of the shims used.• Position backplate in desired equipment location. To further reduce the operating sound level of the unit, 1/8-inch thick rubber matting may be placed under the chassis to eliminate vibration on hard flooring surfaces. (Make sure back plate is level).• Mark and cut floor or wall penetrations for electrical wiring, water and condensate piping.
Optional Electrical Disconnect and Motorized Outside Air Damper• Mark and cut wall penetrations for field fabricated outside air duct sleeve.• Align mounting holes with backplate and attach with screws supplied.
Figure 1
Low Sill FlatTop Cabinet
Low SillChassis
Wall Mount for Chassisw/Flat Top Cabinets
Fused ElectricalDisconnect (Optional)
CondensateDrain Location
Ball Valves(Optional)
Optional Hoses
Wall Penetrationfor Water Connection
Floor Penetration forWater Connection
Water Out
Water In
P/T Plugs (Optional)
19.0Centered
w/ Cabinet
12
RCL SERIES INSTALLATION MANUAL
Installation Steps cont.Step 4: Provide Water and Condensate Drain Connections• A two-pipe reverse return piping configuration is recommended as it equalizes the piping circuit lengths and delivers even water flow to each unit. A direct return piping configuration may be used, but it may be difficult to achieve and maintain proper water flow to the units.• An air vent must be installed in the water distribution system.• The supply and return water piping should be run through the wall or floor penetration and terminate with a ball valve. The piping material used must comply with all local codes.• Refer to: System Cleaning and Flushing procedures.
Pipe Locations
Figure 2
CondensateDrainLocation
Water Connections
Fused ElectricalDisconnect (Optional
Wall Mounted)
Cabinet Extendsto this Point
Console Chassis
Console Cabinet
Target Area forWall Penetration
Target Areafor FloorPenetration
5 in. x 8 in. Area Approx.1/2 in. from Edge of
Chassis 1 in. from FrontEdge of Cabinet
5 in. x 8 in. Area Approx.1/2 in. from Edge of
Chassis 3 in. from Floor
ElectricalJunction
Box 24V Accessory
13
RCL SERIES INSTALLATION MANUAL
Installation Steps cont.Step 5: Provide Line Voltage Wiring• Check unit data plate located on control side of chassis for ampacity and fuse size.• Remove electrical knockouts from chassis backplate.• Run line voltage wiring through knockout and secure wiring to backplate or disconnect.
Step 6: Chassis Installation• Level and secure backplate to wall.• Position the chassis against back plate. Drive (2) screws through holes in lip of backplate into top flange of chassis.
Step 7: Final Electrical Connection• Install flexible electrical conduit between the backplate or electrical disconnect and the unit mounted junction box.• Make final wiring connections in disconnect and junction box, taking care to replace all covers when done. Wiring must
conform to NEC and/or all local codes. Refer to Electrical Data.
NOTE: It is necessary to make final wiring connections prior to securing unit chassis to back plate on right-hand piping models with electrical disconnect.
Step 8: Final Water Connection• For ease of installation and sound attenuation, high pressure (recommended) flexible hoses with a swivel fitting should
be provided. Apply Teflon® tape or sealant compound to threaded hose fittings.• Combination shut-off/balancing valves should be installed on both the supply and return water lines of the unit.• Flow control valves should be installed on the water discharge line.• It is recommended that P/T ports be installed on the supply and return water lines.
Step 9: Set Unit Controls• Locate the “continuous fan/cycle fan” switch within the electrical compartment of the chassis and set to desired position.
(Remote wall thermostat units do not use this optional switch.)• Optional Control Settings-
Remote Thermostat - Run low voltage wiring from unit to the desired thermostat location.Mount and wire thermostat according to manufacturer’s recommendations.
Step 10: Secure the Cabinet Cover• Position and lower cabinet over unit chassis. Apply pressure to the front of the cabinet to ensure that the back lip of the
cabinet hooks over the tabs provided on the backplate.• Secure cabinet to chassis with mounting screws provided.
Step 11: Perform Final Unit Check• Measure the pressure drop across the water coil and monitor water or air temperatures in both heating and cooling
modes. The measured values should fall within the acceptable ranges shown in the Startup Performance table.
14
RCL SERIES INSTALLATION MANUAL
Installation Steps cont.Field Converting ConsoleChassis is normally configured with controls on right end and piping on left end (see Figure 3 top view). In this position panel number 1 would be positioned against wall or back plate. Unit may also be turned 180° against wall or back plate. In this position controls will be on left end and piping on right end panel number 2 would be positioned against wall or back plate. Chassis must be enclosed with an approved cabinet enclosure.
1. Remove 4 screws from front kick panel on cabinet.2. Remove cabinet from chassis by lifting and sliding cabinet
straight up.3. Remove grille assembly from cabinet by removing 4 screws from
brackets located on the bottom of the grille and door assemblies.4. Replace grille/door assemblies into cabinet repositioning pieces
1, 2, and 3 into the locations directly opposite the original positions. Secure by replacing mounting brackets. (Note: Be sure that louvers on the grille assembly are facing the proper direction when replacing the grille section.)
5. Replace grille/frame assembly into cabinet, and secure by replacing mounting brackets.
6. Replace cabinet by sliding it down over the top of the chassis.7. Remove tab on leg that extends into return air opening. When
the grille side of the cabinet is flat against chassis there will be 4 holes that line up in the leg section. Only use 1 hole for alignment for opposite side of grille. (Note: The tab can be removed by twisting back and forth until it breaks off.)
8. Remove plastic strip from tab and replace on rough edge that the tab was removed from.
9. Replace screws in font kick panel to secure cabinet to chassis.10. Mount filter bracket in designated opening area. (Note: The filter
bracket will only fit in one direction if cabinet is installed properly.)
LEFT RETURN
RIGHT RETURN
1
3
2
7
6
5
5
4
6
7
3
4
5
5
2
1
15
RCL SERIES INSTALLATION MANUAL
System Cleaning and FlushingCleaning and FlushingPrior to start up of any heat pump, the water circulating system must be cleaned and flushed of all dirt and debris.
If the system is equipped with water shutoff valves, the supply and return runouts must be connected together at each unit location (This will prevent the introduction of dirt into the unit, see Figure 7). The system should be filled at the water make-up connection with all air vents open. After filling, vents should be closed.
The contractor should start the main circulator with the pressure reducing valve makeup open. Vents should be checked in sequence to bleed off any trapped air and to verify circulation through all components of the system.
As water circulates through the system, the contractor should check and repair any leaks found in the piping system. Drain(s) at the lowest point(s) in the system should be opened for initial flush and blowdown, making sure water fill valves are set at the same rate. Check the pressure gauge at the pump suction and manually adjust the make-up water valve to hold the same positive pressure both before and after opening the drain valves. Flushing should continue for at least two hours, or longer if required, until drain water is clean and clear.
The supplemental heater and/or circulator pump, if used, should be shut off. All drains and vents should be opened to completely drain the system. Short-circuited supply and return runouts should now be connected to the unit supply and return connections.
Refill the system with clean water. Test the system water for acidity and treat as required to leave the water slightly alkaline (pH 7.5 to 8.5). The specified percentage of antifreeze may also be added at this time. Use commercial grade antifreeze designed for HVAC systems only. Environol™ brand antifreeze is recommended..
Once the system has been filled with clean water and antifreeze (if used), precautions should be taken to protect the system from dirty water conditions. Dirty water will result in system-wide degradation of performance, and solids may clog valves, strainers, flow regulators, etc. Additionally, the heat exchanger may become clogged which reduces compressor service life and can cause premature unit failure.
In boiler/tower application, set the loop control panel set points to desired temperatures. Supply power to all motors and start the circulating pumps. After full flow has been established through all components including the heat rejector (regardless of season), air vented and loop temperatures stabilized, each of the units will be ready for check, test and start up and for air and water balancing.
Ground Source Loop System CheckoutOnce piping is completed between the unit pumping system and ground loop, final purging and charging of the loop is needed. A high pressure pump is needed to achieve adequate flow velocity in the loop to purge air and dirt particles from the loop itself. Antifreeze solution is used in most areas to prevent freezing. Flush the system adequately to remove as much air as possible; then pressurize the loop to a static pressure of 40-50 psi (summer) or 50-75 psi (winter). This is normally adequate for good system operation. Loop static pressure may decrease soon after initial installation, due to pipe expansion and loop temperature change. Running the unit for at least 30 minutes after the system has been completely purged of air will allow for the “break-in” period. It may be necessary to adjust static loop pressure (by adding water) after the unit has run for the first time. Loop static pressure will also fluctuate with the seasons. Pressures will be higher in the winter months than during the cooling season. This fluctuation is normal and should be considered when charging the system initially.
Ensure the pump provides adequate flow through the unit by checking pressure drop across the heat exchanger. Usually 2.25-3.0 gpm of flow per ton of cooling capacity is recommended in earth loop applications.
Return Runout
Supply Runout
Mains
Rubber Hose
Runouts InitiallyConnected Together
Figure 7: Flushing with WaterShutoff Valve Equipped Systems
16
RCL SERIES INSTALLATION MANUAL
Open Loop Ground Water SystemsAlways maintain water pressure in the heat exchanger by placing water control valves at the outlet of the unit to prevent mineral precipitation. Use a closed, bladder-type expansion tank to minimize mineral formation due to air exposure. Ensure proper water flow through the unit by checking pressure drop across the heat exchanger and comparing it to the figures in unit capacity data tables in the specification catalog. 1.5-2 gpm of flow per ton of cooling capacity is recommended in open loop applications.
Discharge water from the unit is not contaminated in any manner and can be disposed of in various ways, depending on local codes, i.e. recharge well, storm sewer, drain field, adjacent stream or pond, etc. Most local codes forbid the use of sanitary sewer for disposal.Consult your local building and zoning departments to assure compliance in your area.
Note: For open loop/groundwater systems or systems that do not contain an antifreeze solution, set SW1-Switch #2 to the “WELL” position (Refer to the Dip Switch Field Selection table). Slow opening/closing solenoid valves (type VM) are recommended to eliminate water hammer.
Water QualityIn ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be present, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualified service mechanic, as special solutions and pumping equipment are required. Desuperheater coils can likewise become scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger may require occasional flushing.
Units with cupronickel heat exchangers are recommended for open loop applications due to the increased resistance to build-up and corrosion, along with reduced wear caused by acid cleaning.
Material Copper 90/10 Cupronickel 316 Stainless SteelpH Acidity/Alkalinity 7 - 9 7 - 9 7 - 9
Scaling Calcium andMagnesium Carbonate
(Total Hardness)less than 350 ppm
(Total Hardness)less than 350 ppm
(Total Hardness)less than 350 ppm
Corrosion
Hydrogen Sulfide Less than 0.5 ppm (rotten egg smell appears at 0.5 ppm) 10 - 50 ppm Less than 1 ppm
Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppmChlorine Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmChlorides Less than 20 ppm Less than 125 ppm Less than 300 ppm
Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10 - 50 ppmAmmonia Less than 2 ppm Less than 2 ppm Less than 20 ppm
Ammonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmAmmonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Ammonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppmAmmonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Total Dissolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppmLSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5
Iron Fouling(Biological Growth)
Iron, FE2+ (Ferrous)Bacterial Iron Potential < 0.2 ppm < 0.2 ppm < 0.2 ppm
Iron Oxide Less than 1 ppm, above this level deposition will occur
Less than 1 ppm, above this level deposition will occur
Less than 1 ppm, above this level deposition will occur
ErosionSuspended Solids Less than 10 ppm and filtered for
max. of 600 micron sizeLess than 10 ppm and filtered for
max. of 600 micron sizeLess than 10 ppm and filtered for
max. of 600 micron sizeThreshold Velocity
(Fresh Water) < 6 ft/sec < 6 ft/sec < 6 ft/sec
NOTES: Grains = ppm divided by 17mg/L is equivalent to ppm
2/22/12
17
RCL SERIES INSTALLATION MANUAL
Electrical ConnectionsGeneralBe sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable.
208 Volt OperationAll 208/230 units are factory wired for 230 volt operation. For 208 volt operation, the red and blue transformer wires must be switched.
Microprocessor Remote Thermostat Wiring
TB
O
G
Y
C
R
L
S
X2
X1
W2
FieldConnections
UnitConnections
24 VAC
COMMON
COMPRESSOR
REVERSINGVALVE
FAN
LOCKOUTSIGNAL
SHUTDOWN
Requires commonconnection or 24
VAC for activation
Red
Black
Yellow
Orange
Green
Brown
Blue
Figure 5
18
RCL SERIES INSTALLATION MANUAL
Blower Performance Data
Electrical Data
Model RatedVoltage
VoltageMin/Max
Compressor BlowerMotorFLA
TotalUnitFLA
MinCircAmp
MaxFuse/HACRMCC RLA LRA
09
115/60/1 104/127 12.5 8.0 50.0 1.5 9.5 11.5 15
208-230/60/1 187/253 6.4 4.1 21.0 0.6 4.7 5.7 10/15
265/60/1 238/292 6.7 4.3 22.0 0.6 4.9 6.0 10/15
12
115/60/1 104/127 14.8 9.5 50.0 1.5 11.0 13.4 20
208-230/60/1 187/253 7.7 4.9 25.0 0.6 5.5 6.7 10/15
265/60/1 238/292 7.0 4.5 22.0 0.6 5.1 6.2 10/15
15208-230/60/1 187/253 9.2 5.9 29.0 2.6 8.5 10.0 15
265/60/1 238/292 7.8 5.0 28.0 2.5 7.5 8.7 10/15
18208-230/60/1 187/253 10.4 6.7 33.5 2.6 9.3 11.0 15
265/60/1 238/292 8.7 5.6 28.0 2.5 8.1 9.5 15
HACR circuit breaker in USA only 6/10/13
ModelCFM
Low Speed High Speed09 260 30012 300 34015 375 45018 450 600
Air fl ow values are with dry coil and standard fi lter.For wet coil performance, fi rst calculate the face velocity of the air coil (face velocity (fpm) = airfl ow (cfm) / face area (sq ft))
19
RCL SERIES INSTALLATION MANUAL
Wiring SchematicsCCM with Remote Thermostat - 208-230-265/60/1
Cap
BrnWht
Grn
PSCBlowerMotor
Factory low voltage wiring
Legend
Wiring lug
Ground
Relay Contacts -N.O., N.C.
Factory line voltage wiring
Quick connect terminal
Wire nut
Notes:1. Switch Red and Blue wires for 208 volt operation.2. Terminal C of the 24V PB is used as “L” output for Brown wire 3 for Lockout.3. When installed, 24VAC connection for remote start/stop controller option.
L1
Factory low voltage wiringFactory line voltage wiring
LP
HP
UnitPower Supply208-230/60/1 or265-277/60/1
GHandi - Box
Ground Lug
HL CCT2 T1
Compressor
C
R
S
Tan (33)
Red Blk
Blue
L1L2
High
Low
RV
RB
COMPRESSOR CONTROL MODULE
TESTPIN
HPHP
CCCG
LOR
CLP
LPY
HPHP
CCCG
LOR
CLP
LPY
Transformer
24V
Blue230V265V
Red208V
Black
Yellow
Black/White
Black/White (1)
Red (2)
Black (6)
Black (7)
Blue (8)Blue (9)
Violet (5)
Violet (4)
Yellow (10)
Orange (21)
Black (29)
Red (30)
NOTE 1
Black (22)
Black (25)
White (28) Black (31)
Red (32)Brown (26)
Black (27)
RB
4 2
5
CR
Y1O
GL
S
Terminal Board X2
X1W
1
Brown
Brown (3)
NOTE 2 RSR
24 V Supply for Start/Stop Signal
NOTE 3
31
FS
Green (00)
Green
Orange
Yellow
Black
Red
Pink
White Not Used
97P827-01 6/24/11
PB
1
2
3
RSR
4 5
Blower Switch
CC
LegendCC - Compressor Contactor
HP - High Pressure SwitchLP - Low Pressure Switch
RV - Reversing Valve CoilST - Entering Air Temperature Sensor
RB - Blower Relay
DT - Damper Terminal Block
PB - Power Block
FS - Freeze Sensing Device
RSR – Remote Start/Stop Relay
Temperature Switch
Switch - High Pressure
Switch - Low Pressure
Relay coil
Capacitor
Thermistor
HP
LP
T
Pink
Violet (5)
Violet (4)
NOTE 3
1 3
PB-21
2
Brown
Red
Black
Yellow Yellow (10)
Orange
Green
20
RCL SERIES INSTALLATION MANUAL
Wiring Schematics cont.CCM with Unit Mounted Thermostat - 208-230-265/60/1
CC
Cap
Brn
WhtGrn
PSCBlowerMotor
Factory low voltage wiring
Temperature Switch
Factory line voltage wiring
Quick connect terminal
Wire nut
Notes:1. Switch Red and Blue wires for 208 volt operation.2. Terminal C of 24 V PB is used as “L”output for Brown wire 3 for Lockout.
3. Optional field installed freeze sensing device.
Field low voltage wiringField line voltage wiring
LP
HP
Handi - Box
Ground Lug
HL
Cycled
CCT2 T1
Compressor
C
R
S
Tan (33)
Red Blk
Blue
L1L2
High
Low
Fan
6
1
32
4
5
COMPRESSOR CONTROL MODULE
TESTPIN
HPHP
CCCG
LOR
CLP
LPY
HPHP
CCCG
LOR
CLP
LPY
24V
Blue230V265V
Red208V
Black
Yellow Black/White
Black/White (1)
Red (2)
Brown (3)
Black (6)
Black (7)
Blue (8)Blue (9)
Ther
mistor
T1
T3
T2
T4
T6
T5
SHUT
DOWN
24 V
AC
INPUT
T6
T4
T5
T2
T1
T3
Overide
Shut down
J1
Red
Violet (4)
Yellow (13)
Yellow (10)
White (20)
Orange (14) Orange (21)
Black (29)
Red (30)
Orange
Black (12)
White (18)
Red (11)
Red (19)
Red (17)
24VAC
Red (15)
Red (16)
NOTE 1
T
ST
CC - Compressor Contactor
HP - High Pressure SwitchLP - Low Pressure Switch
RV - Reversing Valve CoilST - Entering Air Temperature Sensor
RB - Blower Relay
Black
Black
Red (11)
Black (12)
Red (17)
Red (19)
Black (25)
White (28)
Black (31)Red (32)
Brown (26)
4 2
5
Red
Black (22)
White (18)
Blue (T6)
NOTE 2
31
Green (00)
Yellow (13)
Not Used
Yellow (13)
Yellow (10)
Legend
97P827-02 7/14/11
Black (22)
White (28)
Black (27)
Brown (26)
DT - Damper Terminal Block
PB - Power Block
PB
1
2
3
Field wire lug
Earth Ground
Relay Contacts -N.O., N.C.
PolarizedConnector
132
P
Switch - High Pressure
Switch - Low Pressure
Relay coil
Capacitor
Thermistor
HP
LP
T
L1
NOTE 3
FS - Freeze Sensing Device
G
UnitPower Supply
208-230/60/1 or265-277/60/1
Violet (5)
21
RCL SERIES INSTALLATION MANUAL
Wiring Schematics cont.ABC - with PSC Motor and Electronic Stat - 208-230-265/60/1
Com
pres
sor
C
ycle
d
Co
ntin
uousA
uto
Fan
6 1
32
4
5
Whi
te (1
8)
Red
(17)
CC L1
L2
T1T2
C
R
S
Tan
(33)
Red
Blac
k
Blue
Han
di -
Box
Gro
und
Lug
Uni
tPo
wer
Sup
ply
208-
230/
60/1
or
265-
277/
60/1
G
24V
Transformer
Th
er
mis
tor
Elec
tron
ic T
HER
MO
STA
T
T1T3
B Co
ol
A H
eat
T2 T4 T6 T5
SHU
T
DO
WN
24 V
AC
IN PUT
T6
T4T5T2
T1
T3
Overide
Shut down
J1
Red
Yello
w (1
3)
Ora
nge
(14)
Ora
nge
TSTBl
ack
Blac
k
Red
Blue
(T6)
Not
Use
d
Red
(11)
Blac
k (1
2)R
ed (1
1)
Yello
w (1
3)
Not
e 1
Blac
k (3
1)
Red
(32)
Blac
kYe
llow
Blac
k/W
hite
Red
208
V
Blue
230
V/26
5V
Red
(19)
Red
(19)
Mod
e Sw
itch
Fan
Mod
e Sw
itch
CFM P1
3
P4
SW1
P5
JW2
P9
LO O/B
Y2 W DH
P8P7
RS4
85 N
ETR
S485
NET
P6
RS4
85 E
XP
P3
SW2O
n
Futu
re U
se
L O
utpu
t Typ
eC
C –
Dua
l/Sin
gle
Acc
– D
ip 5
Acc
– D
ip 4
RV
– B/
OFP
2 –
15°F
/30°
FFP
1 –
15°F
/30°
F
Com
1LE
D5
Com
2LE
D5
Test
Mod
e
F1-3
A
P1
C
PWM 1 2 3 4 5 6 7 8
ALM
ALG
ACC
CO
M
ACC
NO
ACC
NC
R C G Y1
EH2
CEH
1C
CO
CR
-+
CR
-+
Off
Faul
tLE
D1
R
Stat
usLE
D3
Con
figLE
D2
CC
2C
CF
CR
FFG
CC
CC
GC
C2
HI
CC
2LO
CC
2G
REV
REV
FP1
FP1
FP2
FP2
LPS
LPS
HPS
HPS
Auro
ra B
ase
Con
trol
(ABC
)
K1-RV Relay
K2-CC Relay
K3-CC2 Relay
K4-Fan Relay
K5-A
larm
R
elay K6
-Acc
R
elay
FRC
CC
GY1
C
R
ES LS
P2
EH1
YG
G
G470
470
Res
isto
r
Orange (01)
Orange (02)RVH
PLP
TFDR
V
Blue (07)
Blue (08)
Black (09)
Black (10)
Yellow
Yellow
Con
dens
ate
Brow
n (2
3)
Green(00)
CC Violet (14)
Black (15)
Yello
w
Gre
en
RB White (12)
Black (13)
Blac
k (1
2)
Cap
Brn/
Wht
Brn
Grn
HL
PSC
Fan
Mot
or
Hig
hLo
w
RB
Red
Blac
k (2
5)4
2
Fan
Spee
d Sw
itch
Blac
k (2
9)
Red
(30)
Blac
k (2
7)
Whi
te (2
8)
Whi
te (2
8)
Yellow
RedRed
24V
Em
erge
ncy
Shu
tdow
n
ES
ES
Ora
nge
(14)
Note 2
22
RCL SERIES INSTALLATION MANUAL
Wiring Schematics cont.ABC - with PSC Motor and Electronic Stat - 208-230-265/60/1
CC2
EH1
Fact
ory
Fault
ALG
ALM
LSES
ACC
c
Status
AURORA BASE CONTROL™
RV – K1
CC
2
CC – K2
CC Hi – K3
Fan – K4
Alarm – K5
Acc – K6
ACC
no
ACC
nc
O/BCRLO G Y1 Y2 W DH
3A-F
use
O/BCRLO G Y1 Y2 W DH
LO
G
HI
CCG
CC
FG
F
R
HP
HP
LP
FP2
FP2
FP1
REV
REV
CFM
PWM
ECM PWM
Fact
ory
Factory Fan Connection
R R
CC
C
C
R
(-)
(+)
RS
485
EH2
C
EH1
C
CO
(+)
(-)
R
CRS4
85 E
xpFa
ctor
y
Com1
Com2
Config
G
G
G
YR
SW1 Test
FP1 – 15oF/30oF
JW2 - Alarm
P11
P5
P2 P1
P8
P7
P9
P6
P3
SW2
P13P4 FP2 – 15oF/30oF
RV – B/O
ACC – Dip 4
ACC – Dip 5
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
Fact
ory
Use
Field ConnectionsField Connections
C
LP
FP1
F
CC
G
Y1
1
2
3
4
5
6
7
8
Off On
N/AR
S485
NET
LED3
LED2LED1
Notes:1 – Swap blue and red leads for 208V operation.2 – Use ALG Output for 24V lockout.
Wire nut
Temperature Switch
Thermistor
Relay Coil
Switch - Condensate Overflow
Switch - High pressure
Switch - Low pressure
Polarized connector
Factory Low Voltage WiringFactory Line Voltage WiringField Low Voltage WiringField Line Voltage WiringOptional BlockDC Voltage PCB Traces
Internal JunctionQuick Connect Terminal
Field Wiring Lug
Ground
Relay Contacts – N.O., N.C.
Field Zone Sensor Wiring
Legend
L1
Capacitor
T
123
CC – Compressor Contactor CO – Condensate Overflow SensorES – Emergency ShutdownHP – High Pressure SwitchLP – Low Pressure Switch FD – Freeze Detection Sensor F1 – Fuse
Fuse
Light Emitting Diode - GreenG
Light Emitting Diode - YellowY
Light Emitting Diode - RedR
SW1 – Push buttonSW2 – DIP package 8 positionPB – Power BlockRB – Blower RelayRV – Reversing Valve Coil
Slow FlashFast FlashFlash Code
Status LED (LED1, Green)Configuration LED (LED2, Yellow)Fault LED (LED3, Red)
Status LED (LED1, Green)Normal ModeControl is Non-FunctionalTest ModeLockout ActiveDehumidification ModeReservedReservedLoad ShedESD
1 second on and 1 second off
Random Start DelayFast Flash
OFFON
Slow FlashFast Flash
Flash Code 2Flash Code 3
Flash Code 6
Flash Code 4Flash Code 5
Aurora LED Flash Codes
100 milliseconds on and 100 milliseconds off100 milliseconds on and 400 milliseconds off with a 2 second pause before repeating
Reserved Flash Code 7
Configuration LED (LED2, Yellow) Fault LED (LED3, Red)
Fast FlashFast Flash
No Software Overide Flash ECM SettingDIP Switch Overide Slow Flash
Normal ModeInput Fault LockoutHigh Pressure LockoutLow Pressure Lockout
Low Water Coil Limit Lockout - FP1Low Air Coil Limit Lockout - FP2
ReservedCondensate Overflow LockoutOver/Under Voltage ShutdownReservedReservedAir/Water Coil Limit Sensor Error
Flash Code 1OFF
Flash Code 2Flash Code 3Flash Code 4Flash Code 5
Flash Code 8
Flash Code 6Flash Code 7
Flash Code 9Flash Code 10Flash Code 11
ECM Configure Mode Fast FlashReset Configure Mode Off
Accessory Relay
Cycle with BlowerCycle with CompressorWater Valve Slow OpenOutdoor Air Damper
SW2-4 SW2-5On OnOff OffOn OffOff On
Operation
Event Normal Mode Test ModeRandom Start DelayCompressor On DelayCompressor Minimum On TimeCompressor Short Cycle DelayBlower Off DelayFault Recognition Delay – High PressureStart-Up Bypass – Low PressureFault Recognition Delay – Low PressureStart-Up Bypass – Low Water/Air Coil LimitFault Recognition Delay – Low Water/Air Coil LimitFault Recognition Delay – Condensate OverflowThermostat Call Recognition TimeAuxiliary Heat Staging DelayEmergency Heat Staging Delay
Less than 1 second
5 to 80 seconds 1 second5 seconds < 1 second
30 seconds 2 secondsLess than 1 second
2 minutes 5 seconds4 minutes 15 seconds
2 minutes
2 minutes
30 seconds30 seconds 30 seconds
30 seconds30 seconds
30 seconds30 seconds30 seconds
2 seconds 2 seconds5 minutes2 minutes
20 seconds7.5 seconds
Aurora Timing Events
Reheat Delay 30 seconds 30 secondsWater Valve Slow Open Delay 90 seconds 90 seconds
23
RCL SERIES INSTALLATION MANUAL
Wiring Schematics cont.ABC - PSC Motor with Remote Stat - 208-230-265/60/1
Transformer
Blue 230V/265V
Red 208V
Black
Note 1
Compressor
CC
T2
R
S
C
BlkRed
Tan
Blu
L2
T1
L1
Handi - Box
Ground Lug
UnitPower Supply208-230/60/1 or
265/60/1
G
BlackWhite
CFM
P13
P4
SW1
P5JW2
P9
LO
O/B
Y2
W
DH
P8 P7
RS485 NET RS485 NET
P6
RS485 EXP
P3
SW2
On
Future Use L Output Type
CC – Dual/SingleAcc – Dip 5Acc – Dip 4
RV – B/OFP2 – 15°F/30°FFP1 – 15°F/30°F
Com1LED5
Com2LED5
Test Mode
F1-3A
P1
C
PWM
12345678
ALM
ALG
ACC COM
ACC NO
ACC NC
R
C
G
Y1
EH2CEH1CCOC R - +C R - +
Off
FaultLED1
R
StatusLED3
ConfigLED2
CC2 CC F CR F FG CC CCG
CC2HI
CC2LO
CC2G
REV REV FP1 FP1 FP2 FP2 LPS LPS HPSHPS
Aurora Base Control(ABC)
K1-RV R
elay
K2-CC
Relay
K3-CC
2 Relay
K4-Fan Relay
K5-Alarm Relay
K6-Acc Relay
F
R
C
CCGY1C
R
ES
LS
P2
EH1
YG G
G
470
470Resistor
Orange (01)
Orange (02)
RV
HPLP
T
FDRV
Blue (07)
Blue (08)
Black (09)
Black (10)
Yellow
Yellow
CC
Violet (14)
Black (15)
Condensate
Brown (23)Green
(00)
TB
ESEmerg Shutdown
LSLoad Shed
LO1Lockout Circuit A
R24VAC
C24VAC Common
OReversing Valve
GFan
Y1Compressor A
WElectric Heat
DHDehumidification
LO2Lockout Circuit B
Y2Compressor B
Class 2
Black/White
Black/White
Black (13)
RB
White (12)
Black (27)
Cap
Brn/Wht
BrnGrn
H L
PSCFan
Motor
High Low
RBRedBlack (25) 4 2
Fan Speed Switch
Black (29)
Red (30)
Black (27)
White (28)
White (28)
Note 2
Red
Red
24V EmergencyShutdown
ESESYellow
Black/White
Yellow
24
RCL SERIES INSTALLATION MANUAL
Wiring Schematics cont.ABC - PSC Motor with Remote Stat - 208-230-265/60/1
Wire nut
Temperature Switch
Thermistor
Relay Coil
Switch - Condensate Overflow
Switch - High pressure
Switch - Low pressure
Polarized connector
Factory Low Voltage WiringFactory Line Voltage WiringField Low Voltage WiringField Line Voltage WiringOptional BlockDC Voltage PCB Traces
Internal JunctionQuick Connect Terminal
Field Wiring Lug
Ground
Relay Contacts – N.O., N.C.
Field Zone Sensor Wiring
Legend
L1
Capacitor
T
123
CC – Compressor Contactor CO – Condensate Overflow SensorES – Emergency ShutdownHP – High Pressure SwitchLP – Low Pressure Switch FD – Freeze Detection Sensor F1 – Fuse
Fuse
Light Emitting Diode - GreenG
Light Emitting Diode - YellowY
Light Emitting Diode - RedR
SW1 – Push buttonSW2 – DIP package 8 positionPB – Power BlockRB – Blower RelayRV – Reversing Valve Coil
CC2
EH1
Fact
ory
Fault
ALG
ALM
LSES
ACC
c
Status
AURORA BASE CONTROL™
RV – K1
CC
2
CC – K2
CC Hi – K3
Fan – K4
Alarm – K5
Acc – K6
ACC
no
ACC
nc
O/BCRLO G Y1 Y2 W DH
3A-F
use
O/BCRLO G Y1 Y2 W DH
LO
G
HI
CCG
CC
FG
F
R
HP
HP
LP
FP2
FP2
FP1
REV
REV
CFM
PWM
ECM PWM
Fact
ory
Factory Fan Connection
R R
CC
C
C
R
(-)
(+)
RS
485
EH2
C
EH1
C
CO
(+)
(-)
R
CRS4
85 E
xpFa
ctor
y
Com1
Com2
Config
G
G
G
YR
SW1 Test
FP1 – 15oF/30oF
JW2 - Alarm
P11
P5
P2 P1
P8
P7
P9
P6
P3
SW2
P13P4 FP2 – 15oF/30oF
RV – B/O
ACC – Dip 4
ACC – Dip 5
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
Fact
ory
Use
Field ConnectionsField Connections
C
LP
FP1
F
CC
G
Y1
1
2
3
4
5
6
7
8
Off On
N/A
RS4
85 N
ET
LED3
LED2LED1
Notes:1 – Swap blue and red leads for 208V operation.2 - When field installed 24VAC motorized valve is used, connect
to C and Y.
Slow FlashFast FlashFlash Code
Status LED (LED1, Green)Configuration LED (LED2, Yellow)Fault LED (LED3, Red)
Status LED (LED1, Green)Normal ModeControl is Non-FunctionalTest ModeLockout ActiveDehumidification ModeReservedReservedLoad ShedESD
1 second on and 1 second off
Random Start DelayFast Flash
OFFON
Slow FlashFast Flash
Flash Code 2Flash Code 3
Flash Code 6
Flash Code 4Flash Code 5
Aurora LED Flash Codes
100 milliseconds on and 100 milliseconds off100 milliseconds on and 400 milliseconds off with a 2 second pause before repeating
Reserved Flash Code 7
Configuration LED (LED2, Yellow) Fault LED (LED3, Red)
Fast FlashFast Flash
No Software Overide Flash ECM SettingDIP Switch Overide Slow Flash
Normal ModeInput Fault LockoutHigh Pressure LockoutLow Pressure Lockout
Low Water Coil Limit Lockout - FP1Low Air Coil Limit Lockout - FP2
ReservedCondensate Overflow LockoutOver/Under Voltage ShutdownReservedReservedAir/Water Coil Limit Sensor Error
Flash Code 1OFF
Flash Code 2Flash Code 3Flash Code 4Flash Code 5
Flash Code 8
Flash Code 6Flash Code 7
Flash Code 9Flash Code 10Flash Code 11
ECM Configure Mode Fast FlashReset Configure Mode Off
Accessory Relay
Cycle with BlowerCycle with CompressorWater Valve Slow OpenOutdoor Air Damper
SW2-4 SW2-5On OnOff OffOn OffOff On
Operation
Event Normal Mode Test ModeRandom Start DelayCompressor On DelayCompressor Minimum On TimeCompressor Short Cycle DelayBlower Off DelayFault Recognition Delay – High PressureStart-Up Bypass – Low PressureFault Recognition Delay – Low PressureStart-Up Bypass – Low Water/Air Coil LimitFault Recognition Delay – Low Water/Air Coil LimitFault Recognition Delay – Condensate OverflowThermostat Call Recognition TimeAuxiliary Heat Staging DelayEmergency Heat Staging Delay
Less than 1 second
5 to 80 seconds 1 second5 seconds < 1 second
30 seconds 2 secondsLess than 1 second
2 minutes 5 seconds4 minutes 15 seconds
2 minutes
2 minutes
30 seconds30 seconds 30 seconds
30 seconds30 seconds
30 seconds30 seconds30 seconds
2 seconds 2 seconds5 minutes2 minutes
20 seconds7.5 seconds
Aurora Timing Events
Reheat Delay 30 seconds 30 secondsWater Valve Slow Open Delay 90 seconds 90 seconds
25
RCL SERIES INSTALLATION MANUAL
Wiring Schematics cont.ABC - with ECM Motor and Electronic Stat - 208-230-265/60/1
Com
pres
sor
Hig
hLo
w
RBRed
Blac
k (2
5)4
2
C
ycle
d
Co
ntin
uousA
uto
Fan
6 1
32
4
5
Whi
te (1
8)
Red
(17)
Fan
Spee
d Sw
itch
CC L1
L2
T1T2
C
R
S
Tan
(33)
Red
Blac
k
Blue
Han
di -
Box
Gro
und
Lug
Uni
tPo
wer
Sup
ply
208-
230/
60/1
or
265-
277/
60/1
G
24V
Transformer
Th
er
mis
tor
Elec
tron
ic T
HER
MO
STA
T
T1T3
B Co
ol
A H
eat
T2 T4 T6 T5
SHU
T
DO
WN
24 V
AC
IN PUT
T6
T4T5T2
T1
T3
Overide
Shut down
J1
Red
Yello
w (1
3)
Ora
nge
(14)
Ora
nge
TSTBl
ack
Blac
k
Red
Blue
(T6)
Not
Use
d
Red
(11)
Blac
k (1
2)R
ed (1
1)
Yello
w (1
3)
NO
TE 1
Blac
k (3
1)
Red
(32)
Blac
k (2
7)
Blac
kYe
llow
Blac
k/W
hite
Red
208
V
Blue
230
V/26
5V
Red
(19)
Red
(19)
Mod
e Sw
itch
Fan
Mod
e Sw
itch
Gre
en/Y
ello
w
ECM
M
otor
Mod
ule
ECM
Mot
or
Not
e 3
ECM
M
otor
Mod
ule
White
Yellow
BlueR
ed Blac
k
CFM P1
3
P4
SW1
P5
JW2
P9
LO O/B
Y2 W DH
P8P7
RS4
85 N
ETR
S485
NET
P6
RS4
85 E
XP
P3
SW2O
n
Futu
re U
se
L O
utpu
t Typ
eC
C –
Dua
l/Sin
gle
Acc
– D
ip 5
Acc
– D
ip 4
RV
– B/
OFP
2 –
15°F
/30°
FFP
1 –
15°F
/30°
F
Com
1LE
D5
Com
2LE
D5
Test
Mod
e
F1-3
A
P1
C
PWM 1 2 3 4 5 6 7 8
ALM
ALG
ACC
CO
M
ACC
NO
ACC
NC
R C G Y1
EH2
CEH
1C
CO
CR
-+
CR
-+
Off
Faul
tLE
D1
R
Stat
usLE
D3
Con
figLE
D2
CC
2C
CF
CR
FFG
CC
CC
GC
C2
HI
CC
2LO
CC
2G
REV
REV
FP1
FP1
FP2
FP2
LPS
LPS
HPS
HPS
Auro
ra B
ase
Con
trol
(ABC
)
K1-RV Relay
K2-CC Relay
K3-CC2 Relay
K4-Fan Relay
K5-A
larm
R
elay K6
-Acc
R
elay
FRC
CC
GY1
C
R
ES LS
P2
EH1
YG
G
G470
470
Res
isto
r
Orange (01)
Orange (02)RV
HP
LP
TFDR
V
Blue (07)
Blue (08)
Black (09)
Black (10)
Yellow
Yellow
Con
dens
ate
Brow
n (2
3)
Green(00)
CC Violet (14)
Black (15)
Yello
w
Gre
en
RB White (12)
Black (13)
Blac
k (1
2)
Yellow
RedRed
24V
Em
erge
ncy
Shu
tdow
n
ES
ES
Ora
nge
(14)
Note 3
26
RCL SERIES INSTALLATION MANUAL
Wiring Schematics cont.ABC - with ECM Motor and Electronic Stat - 208-230-265/60/1
Page 1
CC2
EH1
Fact
ory
Fault
ALG
ALM
LSES
ACC
c
Status
AURORA BASE CONTROL™
RV – K1
CC
2
CC – K2
CC Hi – K3
Fan – K4
Alarm – K5
Acc – K6
ACC
no
ACC
nc
O/BCRLO G Y1 Y2 W DH
3A-F
use
O/BCRLO G Y1 Y2 W DH
LO
G
HI
CCG
CC
FG
F
R
HP
HP
LP
FP2
FP2
FP1
REV
REV
CFM
PWM
ECM PWM
Fact
ory
Factory Fan Connection
R R
CC
C
C
R
(-)
(+)
RS
485
EH2
C
EH1
C
CO
(+)
(-)
R
CRS4
85 E
xpFa
ctor
y
Com1
Com2
Config
G
G
G
YR
SW1 Test
FP1 – 15oF/30oF
JW2 - Alarm
P11
P5
P2 P1
P8
P7
P9
P6
P3
SW2
P13P4 FP2 – 15oF/30oF
RV – B/O
ACC – Dip 4
ACC – Dip 5
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
Fact
ory
Use
Field ConnectionsField Connections
C
LP
FP1
F
CC
G
Y1
1
2
3
4
5
6
7
8
Off On
N/A
RS4
85 N
ETLED3
LED2LED1
Notes:1 – Swap blue and red leads for 208V operation.2 – Use ALG Output for 24V lockout.3 – Factory wired. Refer to blower table settings.
Wire nut
Temperature Switch
Thermistor
Relay Coil
Switch - Condensate Overflow
Switch - High pressure
Switch - Low pressure
Polarized connector
Factory Low Voltage WiringFactory Line Voltage WiringField Low Voltage WiringField Line Voltage WiringOptional BlockDC Voltage PCB Traces
Internal JunctionQuick Connect Terminal
Field Wiring Lug
Ground
Relay Contacts – N.O., N.C.
Field Zone Sensor Wiring
Legend
L1
Capacitor
T
123
CC – Compressor Contactor CO – Condensate Overflow SensorES – Emergency ShutdownHP – High Pressure SwitchLP – Low Pressure Switch FD – Freeze Detection Sensor F1 – Fuse
Fuse
Light Emitting Diode - GreenG
Light Emitting Diode - YellowY
Light Emitting Diode - RedR
SW1 – Push buttonSW2 – DIP package 8 positionPB – Power BlockRB – Blower RelayRV – Reversing Valve Coil
Slow FlashFast FlashFlash Code
Status LED (LED1, Green)Configuration LED (LED2, Yellow)Fault LED (LED3, Red)
Status LED (LED1, Green)Normal ModeControl is Non-FunctionalTest ModeLockout ActiveDehumidification ModeReservedReservedLoad ShedESD
1 second on and 1 second off
Random Start DelayFast Flash
OFFON
Slow FlashFast Flash
Flash Code 2Flash Code 3
Flash Code 6
Flash Code 4Flash Code 5
Aurora LED Flash Codes
100 milliseconds on and 100 milliseconds off100 milliseconds on and 400 milliseconds off with a 2 second pause before repeating
Reserved Flash Code 7
Configuration LED (LED2, Yellow) Fault LED (LED3, Red)
Fast FlashFast Flash
No Software Overide Flash ECM SettingDIP Switch Overide Slow Flash
Normal ModeInput Fault LockoutHigh Pressure LockoutLow Pressure Lockout
Low Water Coil Limit Lockout - FP1Low Air Coil Limit Lockout - FP2
ReservedCondensate Overflow LockoutOver/Under Voltage ShutdownReservedReservedAir/Water Coil Limit Sensor Error
Flash Code 1OFF
Flash Code 2Flash Code 3Flash Code 4Flash Code 5
Flash Code 8
Flash Code 6Flash Code 7
Flash Code 9Flash Code 10Flash Code 11
ECM Configure Mode Fast FlashReset Configure Mode Off
Accessory Relay
Cycle with BlowerCycle with CompressorWater Valve Slow OpenOutdoor Air Damper
SW2-4 SW2-5On OnOff OffOn OffOff On
Operation
Event Normal Mode Test ModeRandom Start DelayCompressor On DelayCompressor Minimum On TimeCompressor Short Cycle DelayBlower Off DelayFault Recognition Delay – High PressureStart-Up Bypass – Low PressureFault Recognition Delay – Low PressureStart-Up Bypass – Low Water/Air Coil LimitFault Recognition Delay – Low Water/Air Coil LimitFault Recognition Delay – Condensate OverflowThermostat Call Recognition TimeAuxiliary Heat Staging DelayEmergency Heat Staging Delay
Less than 1 second
5 to 80 seconds 1 second5 seconds < 1 second
30 seconds 2 secondsLess than 1 second
2 minutes 5 seconds4 minutes 15 seconds
2 minutes
2 minutes
30 seconds30 seconds 30 seconds
30 seconds30 seconds
30 seconds30 seconds30 seconds
2 seconds 2 seconds5 minutes2 minutes
20 seconds7.5 seconds
Aurora Timing Events
Reheat Delay 30 seconds 30 secondsWater Valve Slow Open Delay 90 seconds 90 seconds
High LowLC*15 Yellow WhiteLC*18 Blue Yellow
Blower Settings
27
RCL SERIES INSTALLATION MANUAL
Standard CCM Control FeaturesCompressor control module (CCM) controls are standard on the RCL Series Low Sill Console heat pump. This control features unit mounted thermostat and switches,Features of the standard control are:• Easy to understand color coded thermostat adjustment markings.• Large, rocker type mode and blower switches.• Internally mounted blower switch to choose cycled or constant blower operation.• High pressure and low pressure safety controls to protect the unit components.• Lockout circuit to shut down unit operation upon receipt of a fault indicator from the safety controls.• A 24 volt control circuit allows for safe and easy diagnosis.
The user selects either “Heat/Cool” or “Fan Only” on the mode switch, then either “High” or “Low” at the blower speed switch. The temperature can be controlled by rotating the thermostat control knob.
The “Fan Only” setting provides constant blower operation.
In the “Heat” mode, a call for heat by the thermostat closes the compressor contactor contacts, energizing the compressor, which will run until the thermostat is satisfied.
In the “Cool” mode, a call for cooling by the thermostat energizes the reversing valve and closes the compressor contactor contacts, energizing the compressor, which will run until the thermostat is satisfied.
If either the low or high pressure safety switches are opened, the compressor and reversing valve are disabled by the lockout relay. Unit operation will resume only after the voltage to the unit is interrupted or the mode switch is placed in the “Off” position.
ControlsControl General Description Application Display/Interface Protocol Thermostat Options
CCM Control The CCM (Compressor control module) is a more reliable replacement for electro-mechanical control applications. It features a small microprocessor board that handles the lockout function of the unit. A second microporcessor handles the unit mounted thermostat for maintaining accurate room temperature.
Residential and commercial applications requiring minimal but reliable controls. Includes Random Start, High and low pressure switches and auto changeover capability.
Dial thermostat with Hi and Low blower speeds, and auto changeover or cont blower selection switches.
None Unit Mounted DigitalDial Thermostat
Remote MountedStandard Thermostat
Unit Mounted Control
28
RCL SERIES INSTALLATION MANUAL
Aurora ‘Base’ Control
NOTE: Refer to the Aurora Base Control Application and Troubleshooting Guide and the Instruction Guide: Aurora Interface and Diagnostics (AID) Tool for additional information.
Control FeaturesS oftware ABC Standard Version 3.0Single or Dual Capacity CompressorsEither single or dual capacity compressors can be operated.
Variable Speed ECM Blower Motor Option (If Applicable)A Variable Speed ECM blower motor can be driven directly using the onboard PWM output. Four blower speeds are available based upon the G, Y1, Y2, and W input signals to the board. The blower speeds can be changed either by the ECM manual con�gurations mode method or by using the Aurora AID Tool directly. All four blower speeds can be set to the same speed if desired.
5-Speed ECM Blower Motor Option (If Applicable)A 5-Speed ECM blower motor will be driven directly using the thermostat connections. Any of the G, Y1, or Y2/W signals can drive any of the 5 available pre-programmed blower speeds on the motor. All 5 Series "G" vintage units will be wired this way at the factory.
Other Control Features• Random start at power up• Anti-short cycle protection• High and low pressure cutouts• Loss of charge• Water coil freeze detection• Air coil freeze detection• Over/under voltage protection• Condensate over�ow sensor• Load shed• Dehumidi�cation (where applicable)• Emergency shutdown• Hot gas reheat operation (where applicable)• Diagnostic LED• Test mode push button switch• Two auxiliary electric heat outputs• Alarm output• Accessory output with N.O. and N.C.• Modbus communication (master)• Modbus communication (satellite)
Field Selectable Options via HardwareDIP Switch (SW1) – Test/Con�guration Button (See SW1 Operation Table)
Test ModeThe control is placed in the test mode by holding the push button switch SW1 for 2 - 5 seconds. In test mode most of the control timings will be shortened by a factor of sixteen (16). LED3 (green) will �ash at 1 second on and 1 second o�. Additionally, when entering test mode LED1 (red) will �ash the last lockout one time. Test mode will automatically time out after 30 minutes. Test mode can be exited by pressing and holding the SW1 button for 2 to 5 seconds or by cycling the power. NOTE: Test mode will automatically be exited after 30 minutes.
Variable Speed ECM Con�guration Mode (If Applicable)
The control is placed in the ECM con�guration mode by holding the pushbutton switch SW1 for 5 to 10 seconds, the high, low, and “G” ECM speeds can be selected by following the LED display lights. LED2 (yellow) will fast �ash when entering the ECM con�guration. When setting “G” speed LED3 (green) will be continuously lit, for low speed LED1 (red) will be continuously lit, and for high speed both LED3 (green) and LED1 (red) will be continuously lit. During the ECM con�guration mode LED2 (yellow) will �ash each of the 12 possible blower speeds 3 times. When the desired speed is �ashed press SW1, LED2 will fast �ash until SW1 is released. “G” speed has now been selected. Next select low speed, and high speed blower selections following the same process above. After third selection has been made, the control will exit the ECM con�guration mode. Aux fan speed will remain at default or current setting and requires the AID Tool for adjustment.
Reset Con�guration ModeThe control is placed in reset con�guration mode by holding the push button switch SW1 for 50 to 60 seconds. This will reset all con�guration settings and the EEPROM back to the factory default settings. LED3 (green) will turn o� when entering reset con�guration mode. Once LED3 (green) turns o�, release SW1 and the control will reset.
DIP Switch (SW2) SW2-1 FP1 Selection – Low water coil temperature limit
setting for freeze detection. On = 30°F; O� = 15°F.SW2-2 FP2 Selection – On = 30°F; O� = N/ASW2-3 RV – O/B - thermostat type. Heat pump
thermostats with “O” output in cooling or “B” output in Heating can be selected. On = O; O� = B.
SW2-4 Access Relay Operation (P2)and 2-5
Access Relay Operation SW2-4 SW2-5Cycle with Blower ON ON
Cycle with Compressor OFF OFFWater Valve Slow Opening ON OFF
Cycle with Comm. T-stat Hum Cmd OFF ON
Controls cont.
29
RCL SERIES INSTALLATION MANUAL
Cycle with Blower - The accessory relay will cycle with the blower output.
Cycle with Compressor - The accessory relay will cycle with the compressor output.
Water Valve Slow Opening - The accessory relay will cycle and delay both the blower and compressor output for 90 seconds.
SW2-6 CC Operation – selection of single or dual capacity compressor. On = Single Stage; Off = Dual Capacity
SW2-7 Lockout and Alarm Outputs (P2) – selection of a continuous or pulsed output for both the LO and ALM Outputs. On = Continuous; Off = Pulsed
SW2-8 Future Use
Alarm Jumper Clip SelectionFrom the factory, ALM is connected to 24 VAC via JW2. By cutting JW2, ALM becomes a dry contact connected to ALG.
Variable Speed ECM Blower SpeedsThe blower speeds can be changed either by using the ECM manual configurations mode method or by using the Aurora AID Tool directly (see Instruction Guide: Aurora Interface and Diagnostics (AID) Tool topic).
Field Selectable Options via Software(Selectable via the Aurora AID Tool)ECM Blower SpeedsAn ECM blower motor can be driven directly using the onboard PWM output. Four blower speeds are available, based upon the “G”, Y1 (low), Y2 (high), and Aux input signals to the board. The blower speeds can be changed either by the ECM manual configurations mode method (see ECM Configuration Mode topic) or by using the Aurora AID Tool directly. All four blower speeds can be set to the same speed if desired. Aux blower speed will remain at default or current setting and requires the AID Tool for adjustment.
Safety FeaturesThe following safety features are provided to protect the compressor, heat exchangers, wiring and other components from damage caused by operation outside of design conditions.
Fuse – a 3 amp automotive type plug-in fuse provides protection against short circuit or overload conditions.
Anti-Short Cycle Protection – 4 minute anti-short cycle protection for the compressor.
Random Start – 5 to 80 second random start upon power up.
Fault Retry – in the fault condition, the control will stage off the outputs and then “try again” to satisfy the thermostat Y input call. Once the thermostat input calls are satisfied, the control will continue on as if no fault occurred. If 3 consecutive faults occur without satisfying the thermostat Y input call, then the control will go to Lockout mode.
Lockout – when locked out, the blower will operate continuously in “G” speed, and PSC blower motor output will remain on. The Alarm output (ALM) and Lockout output (L) will be turned on. The fault type identification display LED1 (Red) shall flash the fault code. To reset lockout conditions with SW2-8 On, thermostat inputs “Y1”, “Y2”, and “W” must be removed for at least 3 seconds. To reset lockout conditions with SW2-8 Off, thermostat inputs “Y1”, “Y2”, “W”, and “DH” must be removed for at least 3 seconds. Lockout may also be reset by turning power off for at least 30 seconds or by enabling the emergency shutdown input for at least 3 seconds.
Lockout With Emergency Heat - if the control is locked out in the heating mode, and a Y2 or W input is received, the control will operate in the emergency heat mode while the compressor is locked out. The first emergency heat output will be energized 10 seconds after the W input is received, and the blower will shift to high speed. If the control remains locked out, and the W input is present, additional stage of emergency heat will stage on after 2 minutes. When the W input is removed, all of the emergency heat outputs will turn off, and the ECM blower will shift to “G” speed and PSC blower motor output will remain on.
High Pressure – fault is recognized when the Normally Closed High Pressure Switch, P4-9/10 opens, no matter how momentarily. The High Pressure Switch is electrically in series with the Compressor Contactor and serves as a hard-wired limit switch if an overpressure condition should occur.
Low Pressure - fault is recognized when the Normally Closed Low Pressure Switch, P4-7/8 is continuously open for 30 seconds. Closure of the LPS any time during the 30 second recognition time restarts the 30 second continuous open requirement. A continuously open LPS shall not be recognized during the 2 minute startup bypass time.
Loss of Charge – fault is recognized when the Normally Closed Low Pressure Switch, P4-7/8 is open prior to the compressor starting.
Condensate Overflow - fault is recognized when the impedance between this line and 24 VAC common or chassis ground drops below 100K ohms for 30 seconds continuously.
Freeze Detection (Coax) - set points shall be either 30°F or 15°F. When the thermistor temperature drops below the selected set point, the control shall begin counting down the 30 seconds delay. If the thermistor value rises above the selected set point, then the count should reset. The resistance value must remain below the selected set point for the entire length of the appropriate delay to be recognized as a fault. This fault will be ignored for the initial 2 minutes of the compressor run time.
Freeze Detection (Air Coil) - uses the FP2 input to protect against ice formation on the air coil. The FP2 input will operate exactly like FP1 except that the set point is 30 degrees and is not field adjustable.
Controls cont.
30
RCL SERIES INSTALLATION MANUAL
Over/Under Voltage Shutdown - An over/under voltage condition exists when the control voltage is outside the range of 18 VAC to 30 VAC. If the over/under voltage shutdown lasts for 15 minutes, the lockout and alarm relay will be energized. Over/under voltage shutdown is self-resetting in that if the voltage comes back within range of 18 VAC to 30 VAC for at least 0.5 seconds, then normal operation is restored.
Operation DescriptionPower Up - The unit will not operate until all the inputs and safety controls are checked for normal conditions. The unit has a 5 to 80 second random start delay at power up. Then the compressor has a 4 minute anti-short cycle delay after the random start delay.
Standby In standby mode, Y1, Y2, W, DH, and G are not active. Input O may be active. The blower and compressor will be off.
Heating OperationSingle Compressor Heating, 2nd Stage (Y1, Y2) The compressor will be staged to full capacity 20 seconds after Y2 input is received. The ECM blower will shift to high speed seconds after the Y2 input is received.
Dual Compressor Heating, 2nd Stage (Y1, Y2) In dual compressor operation, two ABC boards used in 24 VAC operation, there will be a Y2 call to the Y1 input on the second ABC. The compressor will stage to full capacity 30 seconds after Y1 input is received to the second board.
Single Compressor Heating, 3rd Stage (Y1, Y2, W) The hot water pump is de-energized and the first stage of electric heat is energized 10 seconds after the W command is received. If the demand continues the second stage of electric heat will be energized after 5 minutes.
Dual Compressor Heating, 3rd Stage (Y1, Y2, W) - The first stage of electric heat is energized 10 seconds after the W command is received. If the demand continues the second stage of electric heat will be energized after 5 minutes
Emergency Heat (W) - The blower will be started on “G” speed, 10 seconds later the first stage of electric heat will be turned on. 5 seconds after the first stage of electric heat is energized the blower will shift to Aux speed. If the emergency heat demand is not satisfied after 2 minutes the second electric heat stage will be energized.
Blower (G) - The blower will start immediately upon receiving a thermostat G command. If there are no other commands from the thermostat the ECM will run on “G” speed until the G command is removed. Regardless of blower input (G) from the thermostat, the blower will remain on for 30 seconds at the end of each heating cycle.
Cooling OperationIn all cooling operations, the reversing valve directly tracks the O input. Thus, anytime the O input is present, the reversing valve will be energized.
Single Compressor Cooling, 2nd Stage (Y1, Y2, 0) The compressor will be staged to full capacity 20 seconds after Y2 input was received. The ECM blower will shift to high speed 15 seconds after the Y2 input was received.
Dual Compressor Cooling, 2nd Stage (Y1, Y2, O) In dual compressor operation, two ABC boards used in 24 VAC operation, there will be a Y2 call to the Y1 input on the second ABC. The compressor will stage to full capacity 30 seconds after Y1 input is received to the second board.
Blower (G) - The blower will start immediately upon receiving a thermostat G command. If there are no other commands from the thermostat the ECM will run on “G” speed until the G command is removed. Regardless of blower input (G) from the thermostat, the blower will remain on for 30 seconds at the end of each heating, cooling, and emergency heat cycle.
Dehumidification (Y1, O, DH or Y1, Y2, O, DH) - When a DH command is received from the thermostat during a compressor call for cooling the ECM blower speed will be reduced by 15% to increase dehumidification.
Emergency Shutdown - Four (4) seconds after a valid ES input, P2-7 is present, all control outputs will be turned off and remain off until the emergency shutdown input is no longer present. The first time that the compressor is started after the control exits the emergency shutdown mode, there will be an anti-short cycle delay followed by a random start delay. Input must be tied to common to activate.
Continuous Blower Operation - The blower output will be energized any time the control has a G input present, unless the control has an emergency shutdown input present. The blower output will be turned off when G input is removed.
Load Shed - The LS input disables all outputs with the exception of the blower output. When the LS input has been cleared, the anti-short cycle timer and random start timer will be initiated. Input must be tied to common to activate.
Controls cont.
31
RCL SERIES INSTALLATION MANUAL
CC2
EH1
Fact
ory
Faul t
ALG
ALMLSES
AC
C c
Status
AURORA BASE CONTROL™
RV – K1
CC2
CC – K2
CC Hi – K3
Fan – K4
Alarm – K5
Acc – K6
AC
C n
o
AC
C n
c
O/BCRLO G Y1 Y2 W DH
3A-F
use
O/BCRLO G Y1 Y2 W DH
LOG
HICCGCCFGFR
HPHPLP
FP2FP2FP1
REVREV
CFM
PW
M
ECM PWM
Fact
ory
Factory Fan Connection
R RC
CC
RS
485
EH2C
EH1C
CO
(+)(-)RCR
S485
Exp
Fact
ory
Com1
Com2
Config
G
G
G
YR
SW1 Test
FP1 – 15oF/30oF
JW2 - Alarm
P11
P5
P2 P1
P8
P7
P9
P6
P3
SW2
P13P4
FP2 – 15oF/30oF
RV – B/O
ACC – Dip 4
ACC – Dip 5
CC – Dual/Single
L – Pulse/Continuous
Reheat/Normal
Fact
ory
Use
Field ConnectionsField Connections
C
LP
FP1
F
CC
G
Y1
1
2
3
4
5
6
7
8
Off On
N/A
RS4
85 N
ET
LED3
LED2LED1
Aurora Interface and Diagnostics (AID) ToolThe Aurora Interface and Diagnostics (AID) Tool is a device that is a member of the Aurora network. The AID Tool is used to troubleshoot equipment which uses the Aurora control via Modbus RTU communication. The AID Tool provides diagnostics, fault management, ECM setup, and system configuration capabilities to the Aurora family of controls. An AID Tool is recommended, although not required, for ECM airflow settings. The AID Tool simply plugs into the exterior of the cabinet in the AID Tool port.
ABC Control Board Layout
Aurora ‘Base’ Control LED DisplaysThese three LEDs display the status, configuration, and fault codes for the control. These can also be read in plain English via the Aurora AID Tool.
Status LED (LED3, Green)
Description of Operation Fault LED, Green
Normal Mode ON
Control is Non-functional OFF
Test Mode Slow Flash
Lockout Active Fast Flash
Dehumidification Mode Flash Code 2
(Future Use) Flash Code 3
(Future Use) Flash Code 4
Load Shed Flash Code 5
ESD Flash Code 6
(Future Use) Flash Code 7
Configuration LED (LED2, Yellow)
Description of Operation Configuration LED, Yellow
No Software Overwritten Flashing ECM Setting
DIP Switch was Overwritten Slow Flash
ECM Configuration Mode Fast Flash
Fault LED (LED1, Red)
Red Fault LEDLED Flash
Code*Lockout
Reset/Remove
AB
C B
asi
c F
au
lts
Normal - No Faults OFF –
Fault - Input 1 No Auto
Fault - High Pressure 2 Yes Hard or Soft
Fault - Low Pressure 3 Yes Hard or Soft
Fault - Freeze Detection FP2 4 Yes Hard or Soft
Fault - Freeze Detection FP1 5 Yes Hard or Soft
Fault - Condensate Overflow 7 Yes Hard or Soft
Fault - Over/Under Voltage 8 No Auto
Fault - FP1 & FP2 Sensor Error 11 Yes Hard or Soft
NOTE: All codes >11 use long flash for tens digit and short flash for the ones digit. 20, 30, 40, 50, etc. are skipped.
Controls cont.
32
RCL SERIES INSTALLATION MANUAL
Aurora ‘Advanced’ Control FeaturesThe Aurora ‘Advanced’
Control system expands on
the capability of the Aurora
‘Base’ Control (ABC)
by adding the Aurora
Expansion Board (AXB).
All of the preceding
features of the Aurora
‘Base’ Control are included.
The following control
description is of the
additional features and
capability of the Aurora
advanced control.
It is highly recommended the
installing/servicing contractor obtain
an Aurora Interface and Diagnostic
Tool (AID) and specialized training
before attempting to install or service
an Aurora ‘Advanced’ control system.
The additional AXB features include the following:
AXB DIP Switch
DIP 1 - ID: This is the AXB ModBus ID and should always
read On.
DIP 2 & 3 - Future UseDIP 4 & 5 - Accessory Relay2: A second, DIP configurable,
accessory relay is provided that can be cycled with the
compressor 1 or 2 , blower, or the Dehumidifier (DH)
input. This is to complement the Accessory 1 Relay on
the ABC board.
Position DIP 4 DIP 5 Description
1 ON ON Cycles with Fan or ECM (or G)
2 OFF ONCycles with CC1 first stage of compressor
or compressor spd 6
3 ON OFFCycles with CC2 second stage of
compressor or compressor spd 7-12
4 OFF OFF Cycles with DH input from ABC board
Advanced Hot Water Generator Control (Domestic Hot Water Option)
In lieu of the ‘Base Hot Water Generator Control’, the
Advanced features an AID Tool selectable temperature limit
and microprocessor control of the process. This will maximize
hot water generation and prevent undesirable energy use. An
alert will occur when the hot water input temperature is at
or above setpoint (100°F - 140°F) for 30 continuous seconds
(130°F is the default setting). This alert will appear as an E15
on the AID Tool and the hot water pump de-energizes. Hot
water pump operations resume on the next compressor cycle
or after 15 minutes of continuous compressor operation during
the current thermostat demand cycle. Since compressor hot
gas temperature is dependent on loop temperature in cooling
mode, loop temperatures may be too low to allow proper
heating of water. The control will monitor water and refrigerant
temperatures to determine if conditions are satisfactory for
heating water. LED1 (red LED) will flash code 15 when the
DHW limit is reached and when conditions are not favorable
for water heating. Error code 15 will also be displayed on the
AID Tool in the fault screen. This flash code is a noncritical
alert and does not necessarily indicate a problem.
Compressor Monitoring
The AXB includes two current transducers to monitor the
compressor current and starting characteristics. Open
circuits or welded contactor faults will be detected. A fault
will produce an E10 code.
IntelliZone2 Zoning Compatibility (Optional IntelliZone2 Zoning)
A dedicated input to connect and communicate with the
IntelliZone2 (IZ2) zoning system is provided on P7. The is a
dedicated communication port using a proprietary ModBus
protocol. An AXB can be added to other selected ABC-only
systems as well. Then an advanced communicating IntelliZone2
zoning system can be added to ABC-only systems. Consult the
IntelliZone2 literature for more information.
Variable Speed Pump
This input and output are provided to drive and monitor
a variable speed pump. The VS pump output is a PWM
signal to drive the variable speed pump. The minimum and
maximum level are set using the AID Tool. 75% and 100%
are the default settings respectively. The VS data input
allows a separate PWM signal to return from the pump
giving fault and performance information. Fault received
from the variable speed pump will be displayed as E16.
Modulating Water Valve
This output is provided to drive a modulating water valve.
Through advanced design the 0-10VDC valve can be
driven directly from the VS pump output. The minimum
and maximum level are set in the same way as the VS
pump using the AID Tool. 75% and 100% are the default
settings respectively.
Loop Pump Linking
This input and output are provided so that two units can be
linked together with a common flow center. When either unit
has a call for loop pump, both unit’s loop pump relays and
variable speed pumps are energized. The flow center then can
simply be wired to either unit. The output from one unit should
be routed to the input of the other. If daisy chained up to 16
heat pumps can be wired and linked together in this fashion.
Controls cont.
33
RCL SERIES INSTALLATION MANUAL
Advanced Communication Ports
Communication ports P6 and P8 will provide future
expansion via dedicated protocols. These are for future use.
Smart Grid-On Peak (SG) Input
The 'On Peak' input was designed to allow utilities to
utilize simple radio controlled switches to control the On
Electric Peak behavior of the 5 and 7 Series Geothermal
Heat Pumps. With a closed contact signal, this input will
limit the operation and thus the power consumption of the
unit by one of the below selections. The AID Tool will allow
configuration of this input for the action of:
• No Action
• Disable compressor operation until removed
• Go to On Peak thermostat settings until removed
[Requires Com T-Stat] (Future Release)
• Compressor limited to 50% or low cap until removed
[dual capacity or variable speed only] (Future Release)
• Disable compressor operation for 1/2 hr (can be
removed immediately) (Future Release)
Then Flash Code 7 on the Green LED for the 'On Peak' mode.
And On Peak will display on communicating thermostats.
Home Automation 1 and 2 Inputs
The Home automation inputs are simple closed contact
inputs that will trigger an AID Tool and thermostat alert
for the homeowner. These would require optional sensors
and or equipment for connection to the AXB board. With
two inputs two different sensors can be selected. The
selected text will then be displayed on the AID Tool and
communicating thermostats. These events will NOT alter
functionality or operation of the heat pump/accessories
and is for homeowner/service notification only.
Home Automation 1 - E23 HA1With a closed dry contact signal, this input will cause an
alarm and Alert Code 23 to indicate on the stat or flash
on ABC. The AID Tool will allow configuration of this input
between the following selections:
• No Action
• Home Automation Fault [no lockout info only]
- Output from home automation system
• Security Alarm [no lockout info only]
- Output from home security
• Sump Alarm Fault [no lockout info only]
- Switch output from sump sensor
• Smoke/CO Alarm Fault [no lockout info only]
- Switch output from Smoke/CO sensor
• Dirty Filter Alarm [no lockout info only]
- Output from dirty filter sensor
Home Automation 2 – E24 HA2With a closed dry contact signal, this input will cause an
alarm and Alert Code 24 to indicate on the stat or flash
on ABC. The AID Tool will allow configuration of this input
between the following selections:
• No Action
• Home Automation Fault [no lockout info only]
- Output from home automation system
• Security Alarm [no lockout info only]
- Output from home security
• Sump Alarm Fault [no lockout info only]
- Switch output from sump sensor
• Smoke/CO Alarm Fault [no lockout info only]
- Switch output from Smoke/CO sensor
• Dirty Filter Alarm [no lockout info only]
- Output from dirty filter sensor
Monitoring Sensor KitsEnergy Monitoring (Standard Sensor Kit on ‘Advanced’ models)
The Energy Monitoring Kit includes two current transducers
(blower and electric heat) added to the existing two
compressor sensors so that the complete power usage of
the heat pump can be measured. The AID Tool provides
configuration detail for the type of blower motor and a
line voltage calibration procedure to improve the accuracy.
This information can be displayed on the AID Tool or
selected communicating thermostats. The TPCM32U03/04
will display instantaneous energy use while the color
touchscreen TPCC32U01 will in addition display a 13 month
history in graph form.
Refrigerant Monitoring (optional sensor kit)
The optional Refrigerant Monitoring Kit includes two
pressure transducers, and three temperature sensors,
heating liquid line, suction temperature and existing cooling
liquid line (FP1). These sensors allow the measurement
of discharge and suction pressures, suction and liquid line
temperatures as well as superheat and subcooling. This
information will only be displayed on the AID Tool.
Performance Monitoring (optional sensor kit)
The optional Performance Monitoring Kit includes three
temperature sensors, entering and leaving water, leaving
air temperature and a water flow rate sensor. With this kit
heat of extraction and rejection will be calculated. This
requires configuration using the AID Tool for selection of
water or antifreeze.
Controls cont.
34
RCL SERIES INSTALLATION MANUAL
Controls cont.Aurora ‘Advanced’ Control LED DisplaysThese three LEDs display the status, configuration, and fault codes for the control. These can also be read in plain English via the Aurora AID Tool.
Status LED (LED3, Green)
Description of Operation Fault LED, Green
Normal Mode ON
Control is Non-functional OFF
Test Mode Slow Flash
Lockout Active Fast Flash
Dehumidification Mode Flash Code 2
Load Shed Flash Code 5
Emergency Shutdown Flash Code 6
On Peak Mode Flash Code 7
(Future Use) Flash Code 8
(Future Use) Flach Code 9
Configuration LED (LED2, Yellow)
Description of Operation Configuration LED, Yellow
No Software Overwritten ECM Setting
DIP Switch Overwritten Slow Flash
ECM Configuration Mode Fast Flash
Reset Configuration Mode OFF
Special Modes and Applications5-Speed ECM Blower Motor
Normally the 5-Speed ECM motor can be driven off
of thermostat signals and the ABC connector P9.
Communicating thermostats, however present a special
problem in this application since they operate without 24
VAC thermostat signals. The ABC board is wired to operate
these systems from the alternate relay output signals CC1,
CC2, Fan, and EH1 and should be wired for this.
Communicating Digital Thermostats
The Aurora controls system also features either mono-
chromatic or color touch screen graphic display
thermostats for user interface. These displays not only
feature easy to use graphical interface but display alerts
and faults in plain English. Many of the features discussed
here may not be applicable without these thermostats.
Dehumidification – Passive
In passive dehumidification mode, the airflow is reduced
by 15% from the heating airflow setting. If cooling airflow is
set to +5, -5 or -10% of heating airflow it will automatically
be set to -15% of heating airflow whenever the
dehumidification call is present in the communicating stat
or from the thermostat input DH. If the airflow for cooling is
already set to -15% no airflow change will be noticed from
normal cooling. Dehumidification mode will be shown on
the ABC and the communicating thermostats.
Fault LED (LED1, Red)
Red Fault LEDLED Flash
Code *Lockout
Reset/ Remove
Fault Condition Summary
AB
C B
asi
c F
au
lts
Normal - No Faults Off -
Fault-Input 1 No Auto Tstat input error. Autoreset upon condition removal.
Fault-High Pressure 2 Yes Hard or Soft HP switch has tripped (>600 psi)
Fault-Low Pressure 3 Yes Hard or Soft Low Pressure Switch has tripped (<40 psi for 30 continuous sec.)
Fault-Freeze Detection FP2 4 Yes Hard or Soft Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Fault-Freeze Detection FP1 5 Yes Hard or Soft Freeze protection sensor has tripped (<15 or 30 degF for 30 continuous sec.)
Fault-Condensate Overflow 7 Yes Hard or Soft Condensate switch has shown continuity for 30 continuous sec.
Fault-Over/Under Voltage 8 No Auto Instantaneous voltage is out of range. **Controls shut down until resolved.
Fault-FP1 Snsr Error 11 Yes Hard or Soft If FP1 Sensor Error
AB
C &
AX
B A
dvan
ce
d F
au
lts
Fault-Compressor Monitor 10 Yes Hard or Soft Open Crkt, Run, Start or welded cont
Non-CriticAXBSnsrErr 13 No Auto Any Other Sensor Error
CriticAXBSnsrErr 14 Yes Hard or Soft Sensor Error for EEV or HW
Alert-HotWtr 15 No Auto HW over limit or logic lockout. HW pump deactivated.
Fault-VarSpdPump 16 No Auto Alert is read from PWM feedback.
Not Used 17 No Auto IZ2 Com Fault. Autoreset upon condition removal.
Non-CritComErr 18 No Auto Any non-critical com error
Fault-CritComErr 19 No Auto Any critical com error. Auto reset upon condition removal
Alarm - Low Loop Pressure 21 No Auto Loop pressure is below 3 psi for more than 3 minutes
Alarm - Home Automation 1 23 No Auto Closed contact input is present on Dig 2 input - Text is configurable
Alarm - Home Automation 2 24 No Auto Closed contact input is present on Dig 3 input - Text is configurable
NOTES: *All codes >11 use long flash for tens digit and short flash for the ones digit. 20, 30, 40, 50 etc. are skipped!Alert’ is a noncritical sensor or function that has failed. Normal operation of the heat pump is maintained but service is desired at some point.
35
RCL SERIES INSTALLATION MANUAL
Unit Startup NotesElectrical DisconnectOptional field installed console disconnect provides a permanent electrical connection to the main electrical supply branch. Wiring between the disconnect and the unit chassis is field supplied and allows the electrical power source to the chassis to be interrupted for unit servicing.
Non-FusedConstructed of heavy gauge galvanized steel, the rocker style disconnect switch provides reliable electrical control. Wiring pigtails, using 12-gauge wires, are factory installed to simplify field wiring.
Fused Similar in construction to the non-fused electrical disconnect. The fused disconnect is available in five models with equipment rated fuses to provide additional circuit protection. The fuses are panel mounted to allow easy inspection and removal without removing the cover on the disconnect.CFD-10 - 10 amp rated fuseCFD-12 - 12 amp rated fuseCFD-15 - 15 amp rated fuseCFD-20 - 20 amp rated fuseCFD-25 - 25 amp rated fuse
Hydronic Loop Controller for Boiler/Tower InstallationsThe hydronic loop controller is a microprocessor based control panel for control of water loop heat rejector (tower), heat supplier (boiler), and/or water well pumps and circulation pumps. Includes audible and visual alarms, temperature indication, and add-on options of low switches, remote alarm sensor wells and pump alternator.
36
RCL SERIES INSTALLATION MANUAL
Unit Startup Checklist/Unit Startup StepsBefore Powering Unit, Check The Following:• High voltage is correct and matches nameplate.• Fuses, breakers and wire size correct.• Low voltage wiring complete.• Piping completed and water system cleaned and flushed.• Air is purged from closed loop system.• Isolation valves are open, water control valves or loop pumps wired.• Condensate line open and correctly pitched.• Transformer switched to 208V if applicable.• Dip switches are set correctly, if applicable.• Blower rotates freely• Air filter is clean and in position.• Service/access panels are in place.• Return air temperature is between 50-80°F heating and 60-95°F cooling.1. Check air coil cleanliness to ensure optimum performance. Clean as needed according to maintenance guidelines. To obtain maximum performance the air coil should be cleaned before startup. A 10-percent solution of dishwasher detergent and water is recommended for both sides of coil, a thorough water rinse should follow.
Startup StepsNote: Complete the Equipment Start-Up/Commissioning Check Sheet during this procedure. Refer to thermostat operating instructions and complete the startup procedure.1. Initiate a control signal to energize the blower motor. Check blower operation. 2. Initiate a control signal to place the unit in the cooling mode. Cooling setpoint must be set below room temperature. 3. Be sure that the compressor and water control valve or loop pump(s) are activated. 4. Verify that the water flow rate is correct by measuring the pressure drop through the heat exchanger using the P/T plugs and
comparing to unit capacity data in specification catalog. 5. Check the temperature of both the supply and discharge water (Refer to Unit Operating Parameters tables). 6. Check for an air temperature drop of 15°F to 25°F across the air coil, depending on the fan speed and entering water temperature.7. Adjust the cooling setpoint above the room temperature and verify that the compressor and water valve or loop pumps deactivate.8. Initiate a control signal to place the unit in the heating mode. Heating set point must be set above room temperature. 9. Check the temperature of both the supply and discharge water (Refer to Unit Operating Parameters tables). 10. Check for an air temperature rise of 20°F to 35°F across the air coil, depending on the fan speed and entering water temperature.11. Adjust the heating setpoint below room temperature and verify that the compressor and water valve or loop pump deactivate. 12. During all testing, check for excessive vibration, noise or water leaks. Correct or repair as required. 13. Set system to desired normal operating mode and set temperature to maintain desired comfort level. 14. Instruct the owner/operator in the proper operation of the thermostat and system maintenance.
Note: Be certain to fill out and forward all warranty registration papers.
37
RCL SERIES INSTALLATION MANUAL
Operating ParametersEntering Water
Temp °FWater Flow
gpm/ton
CoolingSuction Pressure
psigDischarge
Pressure psig Superheat Subcooling Water Temp Rise °F
Air Temp Drop °F DB
30 1.5 100 - 115 170 - 190 17 - 26 10 - 14 18 - 22 20 - 303.0 115 - 125 150 - 170 20 - 29 7 - 11 8 - 10 20 - 30
50 1.5 133 - 148 225 - 245 8 - 11 7 - 11 18 - 22 20 - 303.0 129 - 144 185 - 205 8 - 11 6 - 10 8 - 10 20 - 30
70 1.5 139 - 154 300 - 320 6 - 10 6 - 10 18 - 22 18 - 263.0 137 - 152 250 - 270 6 - 10 6 - 10 8 - 10 18 - 26
90 1.5 143 - 158 360 - 380 6 - 10 6 - 10 18 - 22 18 - 263.0 141 - 156 330 - 350 6 - 10 6 - 10 8 - 10 18 - 26
110 2.3 143 - 158 360 - 380 6 - 10 6 - 10 18 - 22 18 - 223.0 141 - 156 440 - 460 6 - 10 6 - 10 8 - 10 18 - 22
Entering Water Temp °F
Water Flowgpm/ton
HeatingSuction Pressure
psigDischarge
Pressure psig Superheat Subcooling Water Temp Drop °F
Air Temp Rise °F DB
30 1.5 73 - 79 305 - 330 7 - 13 7 - 11 7 -10 20 - 263.0 79 - 85 315 - 345 7 - 13 7 - 11 3 - 6 20 - 26
50 1.5 103 - 109 330 - 370 7 - 13 7 - 11 8 - 11 22 - 323.0 115 - 130 350 - 380 7 - 13 7 - 11 4 - 7 22 - 32
70 1.5 145 - 155 375 - 410 7 - 13 7 - 11 11 - 14 28 - 383.0 155 - 165 415 - 435 10 - 14 7 - 11 7 - 10 35 - 45
90 1.5 170 - 185 435 - 470 11 - 18 7 - 11 8 - 11 42 - 503.0 174 - 190 465 - 500 11 - 18 7 - 11 8 - 11 42 - 50
110 2.33.0
NOTES: Cooling performance based on entering air temperatures of 80°F DB, 67°F WB. 6/20/11 Heating performance based on entering air temperature of 70°F DB.
Operating LimitsOperating Limits Cooling Heating
(°F) (°C) (°F) (°C)Air Limits Min. Ambient Air 45 7.2 45 7.2 Rated Ambient Air 80 26.7 70 21.1 Max. Ambient Air 100 37.8 85 29.4 Min. Entering Air 50 10.0 40 4.4 Rated Entering Air db/wb 80.6/66.2 27/19 68 20.0 Max. Entering Air db/wb 110/83 43/28.3 80 26.7Water Limits Min. Entering Water 30 -1.1 20 -6.7 Normal Entering Water 50-110 10-43.3 30-70 -1.1 Max. Entering Water 120 48.9 90 32.2
NOTE: Minimum/maximum limits are only for start-up conditions, and are meant for bringing the space up to occupancy temperature. Units are not designed to operate at the minimum/maximum conditions on a regular basis. The operating limits are dependant upon three primary factors: 1) water temperature, 2) return air temperature, and 3) ambient temperature. When any of the factors are at the minimum or maximum levels, the other two factors must be at the normal level for proper and reliable unit operation.
38
RCL SERIES INSTALLATION MANUAL
Compressor and Thermistor Resistance
Thermistor ResistanceThermistor
Temperature (°F)Microprocessor
Resistance (Ohms)FX10
Resistance (Ohms)5 75757-70117 746-770
14 57392-53234 775-80323 43865-40771 808-83632 33809-31487 841-86941 26269-24513 875-90350 20570-19230 910-93859 16226-15196 946-97468 12889-12093 981-101377 10310-9688 1019-105186 8300-7812 1058-109095 6723-6337 1097-1129
104 5480-5172 1137-1169113 4490-4246 1179-1211122 3700-3504 1221-1253131 3067-2907 1261-1297140 2554-2424 1305-1341149 2149-2019 1350-1386
7/6/10
Pressure Drop
Model GPMPressure Drop (psi)
30°F 50°F 70°F 90°F 110°F
091.2 1.0 0.9 0.8 0.7 0.6
1.8 2.3 2.2 2.0 1.9 1.8
2.5 3.8 3.7 3.5 3.3 3.1
121.5 0.9 0.8 0.7 0.6 0.5
2.3 1.7 1.5 1.4 1.3 1.1
3.5 3.0 2.7 2.5 2.4 2.2
152.0 1.7 1.6 1.5 1.4 1.3
3.0 3.3 3.2 3.0 2.9 2.8
4.5 5.7 5.5 5.3 5.1 4.9
183.0 1.7 1.6 1.5 1.4 1.3
4.0 4.1 4.0 3.9 3.7 3.6
5.5 7.9 7.6 7.4 7.2 6.96/10/13
Compressor ResistanceModel 115/60/1 208-230/60/1 265/60/1
Run Start Run Start Run Start09 0.77 - 0.89 1.79 - 2.05 3.65 - 4.19 3.75 - 4.31 3.73 - 4.27 4.45 - 5.1312 0.77 - 0.89 1.79 - 2.05 3.35 - 3.85 2.80 - 3.22 3.73 - 4.27 4.45 - 5.1315 2.74 - 3.16 2.60 - 3.00 3.03 - 3.49 2.39 - 2.7518 2.24 - 2.58 2.84 - 3.26 3.03 - 3.49 2.39 - 2.75
6/10/13
39
RCL SERIES INSTALLATION MANUAL
Symptom Head Pressure
Suction Pressure
CompressorAmp Draw Superheat Subcooling Air Temp.
DifferentialWater Temp. Differential
Under Charged System (Possible Leak) Low Low Low High Low Low LowOver Charged System High High High Normal High Normal/Low NormalLow Air Flow Heating High High High High/Normal Low High LowLow Air Flow Cooling Low Low Low Low/Normal High High LowLow Water Flow Heating Low/Normal Low/Normal Low Low High Low HighLow Water Flow Cooling High High High High Low Low HighHigh Air Flow Heating Low Low Low Low High Low LowHigh Air Flow Cooling Low High Normal High Low Low NormalHigh Water Flow Heating Normal Low Normal High Normal Normal LowHigh Water Flow Cooling Low Low Low Low High Normal LowLow Indoor Air Temperature Heating Low Low Low Normal High Normal Normal/HighLow Indoor Air Temperature Cooling Low Low Low Normal/Low High Low LowHigh Indoor Air Temperature Heating High High High Normal/High Normal/Low Low NormalHigh Indoor Air Temperature Cooling High High High High Low Low HighRestricted TXV (Check Service Advisory) High Low Normal/Low High High Low LowInsufficient Compressor (Possible Bad Valves) Low High Low High Normal/High Low LowTXV - Bulb Loss of Charge Low Low Low High High Low LowScaled Coaxial Heat Exchanger Heating Low Low Low Normal/Low High Low LowScaled Coaxial Heat Exchanger Cooling High High High Normal/Low Low Low LowRestricted Filter Drier Check temperature difference (delta T) across filter drier.
7/6/10
Refrigerant Circuit Guideline
40
RCL SERIES INSTALLATION MANUAL
Heat of Extraction/Rejection Data
LegendABBREVIATIONS AND DEFINITIONS:cfm = airflow, cubic feet/minuteEWT = entering water temperature, Fahrenheitgpm = water flow in gallons/minuteWPD = water pressure drop, psi and feet of waterEAT = entering air temperature, Fahrenheit (dry bulb/wet bulb)HC = air heating capacity, MBtu/hTC = total cooling capacity, MBtu/hSC = sensible cooling capacity, MBtu/hKW = total power unit input, kilowattsHR = total heat of rejection, MBtu/h
HE = total heat of extraction, MBtu/hHWC = hot water generator capacity, MBtu/hEER = Energy Efficient Ratio = Btu output/Watt inputCOP = Coefficient of Performance = Btu output/Btu inputLWT = leaving water temperature, °FLAT = leaving air temperature, °FTH = total heating capacity, MBtu/hLC = latent cooling capacity, MBtu/hS/T = sensible to total cooling ratio
Reference CalculationsHeating Calculations: Cooling Calculations:
LWT = EWT +
LAT(DB) = EAT(DB) -
LC = TC - SC
S/T =
HRgpm x 500
SCcfm x 1.08
SCTC
HEgpm x 500
LWT = EWT -
LAT = EAT +
TH = HC + HWC
HCcfm x 1.08
Model gpm Heat of Extraction (HE) Heat of Rejection (HR)30°F 50°F 70°F 90°F 30°F 50°F 70°F 90°F 110°F
091.2 6.2 8.1 10.6 12.9 12.1 11.81.8 5.0 6.6 8.5 10.8 13.9 13.1 12.4 11.7 10.92.5 5.0 6.9 9.0 10.9 14.0 13.4 12.6 11.8 11.0
121.5 7.8 10.1 12.4 15.2 14.4 13.92.3 6.3 8.1 10.4 12.6 16.3 15.4 14.6 13.9 12.93.5 6.2 8.6 10.9 12.8 16.3 15.8 14.9 14.0 13.0
152.0 10.3 12.4 16.4 19.7 18.2 19.93.0 8.8 10.7 12.9 16.7 19.4 19.8 18.2 20.0 18.74.5 7.4 11.3 13.7 17.0 19.5 19.9 18.2 20.2 18.9
183.0 12.0 15.2 17.6 23.8 22.0 20.74.0 9.5 12.2 15.5 17.9 23.4 23.9 21.9 20.7 19.45.5 8.5 12.6 16.0 18.2 23.5 23.9 21.9 20.9 19.5
Data provided in MBtu/h 6/10/13
41
RCL SERIES INSTALLATION MANUAL
COOLING CYCLE ANALYSIS
EXPANSIONVALVE
°F AIRCOIL
°F°F
PSI PSIBRINE IN BRINE OUT
COMPRESSOR
DISCHARGE
SUCTION
Subcooling
Superheat
REVERSINGVALVE
PSI
°F
SAT °F=
PSI = SAT F
F°FLIQUID LINE
°
°
°F
COAXSOURCE
Heat of Extraction/Rejection = GPM x 500 (485 for water/antifreeze) x ∆T
Note: DO NOT hook up pressure gauges unless there appears to be a performance problem.
Line Voltage:
Loop: OpenUnit Amp Draw:
Closed
COAXSOURCE
HEATING CYCLE ANALYSIS
EXPANSIONVALVE
°F AIRCOIL
°F°F
PSI PSIBRINE IN BRINE OUT
COMPRESSOR
DISCHARGE
SUCTION
Subcooling
Superheat
REVERSINGVALVE
PSI
°F
SAT °F=
PSI = SAT F
FFLIQUID LINE
°
°
°
°FLine Voltage:
Loop: OpenUnit Amp Draw:
Closed
DEALER:
PHONE #: DATE:
PROBLEM:
MODEL #:
SERIAL #: Startup/Troubleshooting Form
42
RCL SERIES INSTALLATION MANUAL
Obtaining PartsWhen ordering service or replacement parts, refer to the model number and serial number of the unit as stamped on the serial plate attached to the unit. If replacement parts are required, men-tion the date of installation of the unit and the date of failure, along with an explanation of the malfunctions and a description of the replacement parts required.
To order replacement parts, contact WaterFurnace at 877-677-4420 or [email protected].
In-Warranty Material ReturnMaterial may not be returned except by permission of authorized warranty personnel. Contact your local distributor for warranty return authorization and assistance.
CAUTION: Fin edges are sharp.
Preventive Maintenance
Replacement Procedures
Water Coil Maintenance1. Keep all air out of the water. An open loop system should be
checked to ensure that the well head is not allowing air toinfiltrate the water line. Lines should always be airtight.
2. Keep the system under pressure at all times. It is recommendedin open loop systems that the water control valve be placed inthe discharge line to prevent loss of pressure during off cycles.Closed loop systems must have positive static pressure.
Note: On open loop systems, if the installation is in an area with a known high mineral content (125 PPM or greater) in the water, it is best to establish with the owner a periodic maintenance schedule so the coil can be checked regularly. Should periodic coil cleaning be necessary, use standard coil cleaning procedures which are compatible with either the cupronickel or copper water lines. Generally, the more water flowing through the unit the less chance for scaling.
Other MaintenanceFilters Filters must be clean to obtain maximum performance. They should be inspected monthly under normal operating conditions and be replaced when necessary. Units should never be operated without a filter.
Condensate DrainIn areas where airborne bacteria produce a slime in the drain pan, it may be necessary to treat chemically to minimize the problem.
The condensate drain can pick up lint and dirt, especially with dirty filters. Inspect twice a year to avoid the possibility of overflow.
Blower MotorsBlower motors are equipped with sealed ball bearings and require no periodic oiling.
Air CoilThe air coil must be cleaned to obtain maximum performance. Check once a year under normal operating conditions and, if dirty, brush or vacuum (with a brush attachment) clean. Care must be taken not to damage the aluminum fins while cleaning.
43
RCL SERIES INSTALLATION MANUAL
Revision GuidePages: Description: Date: By:Misc. Removed FX10 Control Option, Added Aurora Controls, Updated Wiring Schematics 01 Mar 2017 MA
23-24, 43 Updated Wiring Schematic, Updated Service Parts Table 11 May 2015 MA
All Updated with All-Aluminum Air Coils 06 Mar 2014 DS
All Added 15 & 18 Models 09 Oct 2013 DS
45 Added Revision Table 09 Oct 2013 DS
Subject to change without notice. Printed in USAwww.johnsoncontrols.com ALL RIGHTS RESERVED
100 JCI Way, York, Pennsylvania USA 17406-8469 Copyright © by Johnson Controls 2019Form 146.09-NOM1 (1219)Issue Date: December 3, 2019 Supersedes: 146.09-NOM1 (818)