TECHNICAL QUIETSIDE DPW Dual Purpose Water Heating Season 2008/2009 QS-DPW-CT-001

TECHNICAL QUIETSIDE

DPW Dual Purpose Water

Heating Season 2008/2009

QS-DPW-CT-001

DPW Condensing DPWH• Basic Model Features• 2 models 99k & 120k

Btu/h inputs

• Tested AFUE of 90%

• Provides both Heating and Domestic Hot Water from one unit

• Modulating induction fan and gas valve for complete control

• Wet recuperative heat exchanger to allow condensing to reduce (<140 DegF) exhaust gas temperature allows venting in Schedule 40 PVC

What is a Dual Purpose Water Heater

• A Dual Purpose Water Heater is a unit that will provide both heating water for space heating and also potable domestic hot water for washing from a single unit without any additional controls required

• Domestic hot water is given priority over the space

heating, and is activated by flow through the domestic hot water system

• DHW is “on demand” and continuous, it will be provided as long as the faucet is open

• Once DHW call is completed the unit will revert to heating the house as required


• The Closed Loop Heating system and the Potable DHW system are

COMPLETELY SEPARATED FROM EACH OTHER

• No Check Valves or other Hydronic components are required for this unit to provide both heating and DHW

• This makes this system a true and better alternative to taking a tankless water heater and then adding the necessary components to enable it to provide space heating


• It is not called a Boiler in North America unlike the rest of the world, this is because

• It does not provide closed loop heating water at a temperature above 176 DegF

• It does not have an ASME H stamp, therefore cannot be used in areas where this is a requirement

• Internal Water Volume is less than 1 gallon

• Therefore these units are certified by ANSI Z21.10.3-2004/CSA 4.3-2004 as a gas water heater

Applications – Hydronic Heating • 1. Radiant Heating :

Almost the perfect application for this unit

Low water temperature adds efficiency to the system

Low water volume suits these ultra low mass type of units

However the only issue is not to slice the zones to thin as this can lead to short cycling of the unit when few zones are calling

Applications – Hydronic Heating 2. Fan Coils :

Good application

For maximum efficiency ensure that return temperature is low enough to allow high efficiency operation

Use an aqua stat on the air handler to allow indoor fan to cycle off when in DHW mode

May need 24VAC SPST relay to interface

For Air handlers (even one) with or without pumps we must use the Quietside Primary/Secondary piping arrangement

Applications Hydronic Heating• 3. Baseboard :

Standard US Baseboard temperature is 180 plus DegF

IF baseboard is sized using these temperatures

Quietside DPWH can only make 176 DegF MAXIMUM inside the unit – Typically temperature delivered into the loop is approx 165 DegF

SO – We may need to add additional lengths of baseboard to the house

Applications Hydronic Heating• 3. Baseboard (Cont):

∆T and Hi Flow rates can cause problems maintaining temperature in the system We recommend designing system for a loop ∆T of 20 to 25 DegF to allow the system to inject enough 160/165 DegF water into the loop to maintain temperature and comfort

Return temps above 140 DegF back to the DPW significantly reduce efficiency and condensate production

Therefore care is required as may not be the best possible application, especially in a true retrofit scenario

Applications Hydronic Heating• 4. Cast Iron Horizontal Radiator Panels

See baseboard issues regarding the water temperatures and ∆T delivered at maximum from the DPW

Very high water volume when compared to a radiant or AHU applicationThis can create flow issues and expansion tank sizing problems for the Quietside unit

Return temps above 140 DegF back to the DPW significantly reduce efficiency and condensate production

Therefore not a preferred application, without careful planning prior to installation

Which size of DPW?HOW TO SIZE THE UNIT• 1. Size the unit to the heating load of the

house

THEN• 2. Size the unit to the domestic hot water usage

of the household.

Use the total max DHW load possible,

i.e. count all of the faucets or appliances that can be used at a single time, that will be your max DHW load, e.g. Shower and faucet, Shower and Laundry etc etc etc

Which size of DPW?• IT IS NOT ACCEPTABLE TO JUST PICK THE

LARGEST UNIT IN THE RANGE BECAUSE OF THE DHW REQUIREMENT

• We must ensure that the unit will modulate down to meet the heating load of the house, providing that the load is above minimum modulation level

• Short cycling will reduce efficiency and promote component wear

Sizing the DPW unit• Q : What is the MINIMUM OUTPUT capacity of a

DPW?

• A : DPW 099 – 47,000 Btu/h

DPW 120 – 47,000 Btu/h

Values based on net IBR calculations

But I have small Zones?• Q : My smallest zone is 10,000 Btu/h what can I do to

prevent short cycling of the unit?

• A : Quietside recommends that the smallest zone on the system should be 25% of the rated unit input or 60% of the minimum output shown in the previous slide

• In the above case we either need to increase the size of the zone in question or ………………..

Get a Buffer• Quietside offers a 20

Gallon buffer tank• DPW maintains the

tank temperature and then system pump (field installed) acts as a primary loop pump

Prevents the DPW from short cycling

Sizing the DPW unit, Part 2• DHW Production : DPW099

Sizing the DPW unit, Part 2


• Q : Still not enough DHW Production??

• A : The DPW can be used very easily in conjunction with a storage tank for an instant supply of DHW – An old electric or gas water heater works very well

Use a bronze re-circ pump for temperature control in the tank

OR

Use the Quietside range of Storage tanks which include all of the parts required


• Quietside Storage Tank• 20 Gallon

• Comes complete with

Bronze pump

Mixing Valve

Check Valves

Aquastat to control pump etc

But I want to use a Tankless• Homeowners want to a

unit to provide between 6 and 8 GPM of DHW, without a tank

• All of these units MUST have a Max Input of between 180,000 Btu/h and 240,000 Btu/h for this level of performance

• DPW has a maximum Input of 120,000 Btu/h with a 90,000 Btu/h being sufficient to heat most houses

I want my 8 GPM• Gas Pipe Sizing becomes an issue• Standard House Construction (approx)• Boiler/Furnace 135,000 Btu/h• Storage Water Heater 40,000 Btu/h• Range/Fireplace 30,000 Btu/h

• Total 205,000 Btu/h

• This requires a maximum gas pipe size in the house of 1” giving full capacity at 80ft of gas piping in the house

I want my 8 GPM• Gas Pipe Sizing using a DPW with a tank

• DPW (Largest) 135,000 Btu/h• No storage Water Heater required• Range/Fireplace 30,000 Btu/h


• This requires a maximum gas pipe size in the house of 1”, with ¾” through most of the house giving full capacity at 80ft of gas piping – no change needed for a retrofit

I want my 8 GPM• Gas Pipe Sizing using a Tankless for DHW

• Water Heater 230,000 Btu/h• Furnace or Heating unit 135,000 Btu/h• No storage Water Heater• Range/Fireplace 30,000 Btu/h


• This requires a minimum gas pipe size in the house of 1 ½” to giving full capacity at 80ft of gas piping in the house

But I want to use a Tankless

But I want to use a Tankless

• Added Cost• Pump Taco 007• Expansion Tank• Brazed Plate• Flow Switch• Check Valves

• Plus the venting……………………….

DHW & Well Systems• Pump is required in a

Well application• Pressure changes during

DHW use can cause flow/temperature changes of DHW from DPW

• Reduce differential on well Pump to minimize OR

• USE A QSDHS STORAGE TANK to prevent this

Installation and Start Up

Locating the DPW unit

• Must be in an indoor location• Ensure that the temperature in that location does

not fall below 45 DegF• Ensure that the Indoor humidity levels do not

exceed 80%• Stay within the venting limitations, total

equivalent length of 45feet, less elbows etc• Requires a solidly grounded dedicated 115V

power supply• Ensure that a correctly sized gas pipe is

available

Installing the DPW• Remove unit from Carton

• Unit installs on a hanging bracket mounted to studs or wall brace

• CANNOT be installed on a combustible wall. Use non combustible backing plate e.g. Durarock or 24g sheet metal

• Pipe condensate directly to the building drain

• Comply with stated clearances to other appliances

Installing the DPW – WaterConnections, Left to Right

Heating Water Return : ¾” Male Union DHW Cold Inlet (or tank) ½” Male Union

DHW Supply to house : ½” Male UnionHeating Water Supply : ¾” Male Union

DO NOT OVER TORQUE!!

Installing the DPW – Gas/Vent• GAS LINE SIZE MINIMUM OF

3/4”, flexible pipe to connect is acceptable providing it has a minimum capacity of 250,000 Btu/h

• Drip leg required to prevent dirt entering gas valve

• Venting : 3” DiameterIntake and Exhaust is standard – connections go directly to 3” PVC

• PVC cement, then seal around vent connection with high temperature silicone to prevent leaks

Installing the DPWEXPANSION TANK AND PRIMARY LOOP PUMP INCLUDED

• Expansion Tank is equivalent to a standard 20 Gallon

• Check your requirement for expansion especially if you are doing an old gravity system

• Primary Loop pump, maximum flow through the Primary Loop is approximately 3.5 GPM

• If you are using a higher flow on the system side it will blend down the temperature delivered in the heat emitters

Installing the DPW

• Manual feed valve included on the unit – no pressure setting however it does have a check valve

• Always installed an approved Boiler Feed Valve on the closed loop system

• Make sure that Backflow prevention is included

• Taco 335 or 329 is ideal

• Screw the Quietside feed valve closed and do not open it

Installing the DPW• Automatic Air vent included

inside unit

• Air Elimination is very important with these types of units

• ALSO INSTALL ADDITONAL VENT AT HIGHEST POINT – AIR REMOVAL IS SINGLE LARGEST CAUSE OF FAULT CODES

Installing the DPWNote : THE PLASTIC SIPHON AT THE FRONT OF THE UNIT

IT MUST BE FILLED PRIOR TO THE START UP OF THE UNIT

Fill To Here

Venting the DPW• When installing the venting ensure that the Exhaust

Flue is sloped back to the DPW approx 1” per 2ft horizontal to allow condensate from exhaust gases to return to the unit for draining – this will also reduce the build up of ice on the termination during cold weather

• Install termination snout to reduce ice build up, caulk around the snout

• Install 90 Deg Elbow and birdscreen on the inlet air pipe

Vertical Venting the DPW• Respect the maximum vent lengths and elbows

• Always use 2 x 45 Deg Elbows on flue pipe

• Use the snout that is provided with the unit for the flue pipe

• 2 x Elbows are used on the Inlet pip providing they are in the same barometric plane, don’t forget the birdscreenVertical Venting addendum to IOM available on request

DPW Circulation Pump

• The pump in the DPW has to overcome the head losses of the unit Heat Exchangers

• Therefore the external head available to the system is much less than the gross pump curve printed, in addition the system is designed for higher ∆T’s than standard US Cast Iron boilers

Unit Flow Rate @ 15Ft External Head

DPW 099 2.1 GPM

DPW 120 2.2 GPM

DPW Water PipingTHEREFORE WE MUST PIPE THE UNIT AS

FOLLOWS, NO IF’S, AND’S OR BUT’S

• With a PRIMARY/SECONDARY LOOP with the unit injecting hot water into the secondary loop to be circulated by the loop pump(s)

• We also have found that using additional pumps in series does not work well with the DPW

• If retrofitting simply remove old unit – replace with pipe and Tees and then pipe up to DPW like this…..

DPW Water PipingCold Water Supply Notes :from House to 1/2" When brazing always wrap valves, drains male connection on etc with a wet rag to prevent damageDPWUse 1/2" Unions Check system design for requirement for

additional expansion tank on closed loop systemShut Off Valves to isolate both Inlet and Supply of Boiler drain installed on Primary LoopDHW system from DPW should be below DPW Isolation valve to allow

closed loop system to be filled with DPW"Boiler Drains" to allow isolated from the closed loop to protect unit maintenance of the DHW A Drain can also be installed on return piping above Plate Heat Exchanger shut off valve to drain the unit or Pressure Relief

valve on the unit can be used provide a drainPressure Relief Valve(Factory Supplied)Pipe to building drain (See local codes)

Anti Scald ValveBoiler Feed Valve with MANDATORYBackflow prevention 3/4" Unions to connect Set for Maximum

See local codes to 3/4" Male Supply and Return of 120DegF Houseconnections on DPW Air Vent at Hot Water

highest point Supply

Shut Off Valves to isolate Supply to Heatingboth Supply & Return 2 x 1 1/4" x 1 1/4" x 3/4" Tees zones

Space max of 4 Pipe Dia's (No detail shown)apart on tee centerline Return from Heating

zones"Boiler Drain" - see notes (No detail shown)

System Circulation PumpField Installed

Use 1 1/4"pipe diameter for heating 8750 Pioneer Blvd, Santa Fe Springs CA 90670

primary loop Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

Title : DPW Recommended Piping Layout, Heating & DHWDrg # : QUI-DPWP-001 Drawn : JLM 8/26/2008 Rev : 001

DPW UNIT

Closed LoopSupply

Closed LoopReturn

DHWHot Out

DHWCold In

DPW Water PipingCold Water Supply Notes :from House to 1/2" When brazing always wrap valves, drains male connection on etc with a wet rag to prevent damageDPWUse 1/2" Unions Boiler drain installed on piping

should be below DPW Isolation valve to allow Shut Off Valves to isolate closed loop system to be filled with DPWboth Inlet and Supply of isolated from the closed loop to protect unit DHW system from DPW

A Drain can also be installed on return piping above "Boiler Drains" to allow shut off valve to drain the unit or Pressure Reliefmaintenance of the DHW valve on the unit can be used provide a drainPlate Heat Exchanger

Pressure Relief Valve(Factory Supplied)Pipe to building drain (See local codes)

Anti Scald ValveBoiler Feed Valve with MANDATORYBackflow prevention 3/4" Unions to connect Set for Maximum

See local codes to 3/4" Male Supply and Return of 120DegF Houseconnections on DPW Air Vent at Hot Water

highest point SupplyCoil Inlet

Shut Off Valves to isolate both Supply & Return System is designed for the

Air Handler to be located no more than 10ft from the DPW and no more than 5ft above

"Boiler Drain" - see notes or below the DPW

Air Handler should not haveit's own circulator installedDisconnect pump if installed

Use max ø1" pipe for Supply& Return to AHU. Max total pipe 8750 Pioneer Blvd, Santa Fe Springs CA 90670

length (Supply & Return) 20ft Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

Title : DPW Recommended Piping Layout, AHU (No Pump) & DHWDrg # : QUI-DPWP-002 Drawn : JLM 8/26/2008 Rev : 001

DPW UNIT

Closed LoopSupply

Closed LoopReturn

DHWHot Out

DHWCold In

AHU Unit

HW Coil

DPW Water PipingClosed Loop Heating System Notes : QSDHS DHW System Notes :When brazing always wrap valves, drains Tank system also includes Tank Drain and etc with a wet rag to prevent damage P/R Valve (supplied loose)

These should be installed and piped in Check system design for requirement for accordance with local codesadditional expansion tank on closed loop system

Boiler drain installed on Supply to closed loopshould be below DPW Isolation valve to allow closed loop system to be filled with DPW Houseisolated from the closed loop to protect unit Hot WaterA Drain can also be installed on return piping above Supplyshut off valve to drain the unit or Pressure Reliefvalve on the unit can be used provide a drain

DPW DHW Inlet & Anti Scald ValvePressure Relief Valve Outlet connection MANDATORYPipe to building drain sizes are 1/2" Supplied with QSDHS (See local codes) Max Setting 120DegF

From ø3/4" NPT Connection3/4" Unions to connect DPW DHWto 3/4" Male Supply and Return To DPW Outletconnections on DPW DHW Inlet

Air Vent at "Boiler Drain" - see notes highest point ø3/4"NPT

Shut Off Valves toisolate DPWfrom Air Handler

Use ø1 1/4" pipefor Primary Loop

ø3/4"NPTø1" NPT

Supply to Heatingzones Taco 008 Bronze Pump

(No detail shown) c/w IFC and Shut offs Cold Water InletReturn from Heating Supplied with QSDHS from House supply

zones(No detail shown) 8750 Pioneer Blvd, Santa Fe Springs CA 90670

Secondary or Zone Pump Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

Title : DPW Piping, Primary Loop Htg c/w QSDHS DHW Storage Drg # : QUI-DPWP-003 Drawn : JLM 9/18/2008 Rev : 001

DPWDPWH

QSDHSDHW STORAGE

TANK SYSTEM20 GAL

CAPACITY

Closed LoopSupply

DHWHot Out

DHWCold In

Closed LoopReturn

DPW Water PipingClosed Loop Heating System Notes : QSDHS DHW System Notes :When brazing always wrap valves, drains Tank system also includes Tank Drain and etc with a wet rag to prevent damage P/R Valve (supplied loose)

These should be installed and piped in System is designed for the Air Handler to be located accordance with local codesno more than 10ft from the DPW and no more than 5ft above or below the DPW

Boiler drain installed on Supply to closed loopshould be below DPW Isolation valve to allow Houseclosed loop system to be filled with DPW Hot Waterisolated from the closed loop to protect unit SupplyA Drain can also be installed on return piping above shut off valve to drain the unit or Pressure Reliefvalve on the unit can be used provide a drain DPW DHW Inlet & Anti Scald Valve

Outlet connection MANDATORYPressure Relief Valve sizes are 1/2" Supplied with QSDHS Pipe to building drain Max Setting 120DegF(See local codes) From ø3/4" NPT Connection

3/4" Unions to connect DPW DHWto 3/4" Male Supply and Return To DPW Outletconnections on DPW DHW Inlet

Air Vent at "Boiler Drain" - see notes highest point ø3/4"NPT

Shut Off Valves toisolate DPWfrom Air Handler

Use max ø1" pipe for Supply& Return to AHU. Max total pipelength (Supply & Return) 20ft

ø1" NPTTaco 008 Bronze Pump ø3/4"NPTc/w IFC and Shut offsSupplied with QSDHS Cold Water Inlet

from House supply

8750 Pioneer Blvd, Santa Fe Springs CA 90670

Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

Title : DPW Piping, Close coupled AHU c/w QSDHS DHW Storage Drg # : QUI-DPWP-004 Drawn : JLM 9/18/2008 Rev : 001

DPWDPWH

AHU Unit

HW Coil

QSDHSDHW STORAGE

TANK SYSTEM20 GAL

CAPACITY

Closed LoopSupply

DHWHot Out

DHWCold In

Closed LoopReturn

Power Wiring the DPW• Power Wiring • 115V, 15 Amp

dedicated circuit is required

• Circuit and unit must be grounded

• Unit has internal 3 Amp glass buss style fuses to protect the Microprocessor and other components

• Seal around connection to prevent leakage

Zone Controlling the DPW

• Several ways to for zone control of the units

1. Taco/Argo style zone controller

2. SR501 switching relay

3. SPST Relays allow interface with 24VAC Thermostats – e.g. Fan Coils

Zone Control Panel WiringDSR-100F

NOTESTO SET DSR-100F

1 PRESS UNIT ON/OFF BUTTON

2 PRESS HEATING SET TEMPBUTTON (LHS OF ON/OFF BUTTON)

YEL

3 USE UP AND DOWN ARROWS TO SELECT DESIRED HEATING YEL

WATER TEMPERATURERANGE 122-176 DEGF

BRN BRN4 PRESS DHW SET TEMP

BUTTON (RHS OF ON/OFF BUTTON)

5 USE UP AND DOWN ARROWS TO SELECT DESIRED DHWWATER TEMPERATURE98-114 DEGF, 120, 130, 140 DEGF

WHEN DRY CONTACT IS CLOSED UNITWILL START AND PROVIDE CLOSED LOOP HEATING WATER AT THE TEMPERATURE SELECTED

DHW PRIORITY WILL BE MAINTAINED

WHEN THE ZONE(S) SATISFY THE UNITWILL SHUT DOWN, DSR WILL REMAIN LIT AT ALL TIMES

THIS IS THE PREFERRED METHOD TO INTEGRATE ZONE VALVES AND THE SECONDARY LOOP PUMP 8750 Pioneer Blvd, Santa Fe Springs CA 90670

Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

Title : DPW & TACO ZVC ZONE CONTROL PANEL WIRINGDrg # : QUI-ZCW-005 Drawn : JLM 10/17/2008 Rev : 001

DPW DPWH

To SecondaryPump Control

e.g. Taco SR501

Zone Switching Relay WiringNOTESTO SET DSR-100F

DSR-100F1 PRESS UNIT ON/OFF BUTTON

2 PRESS HEATING SET TEMPERATURE BUTTON

YEL



BRN BRN4 PRESS DHW SET

TEMPERATURE BUTTON


WHEN X-X CONTACT IS CLOSED UNITWILL START AND PROVIDE CLOSED LOOPHEATING WATER AT THETEMPERATURE SELECTED



THIS IS THE PREFERRED METHOD TO CONTROL THE SECONDARY LOOP PUMPREQUIRED IN ALL NON CLOSE COUPLED 8750 Pioneer Blvd, Santa Fe Springs CA 90670

AHU & HW COIL APPLICATIONS Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

Title : DPW & TACO SR501 ZONE CONTROL PANEL WIRINGDrg # : QUI-ZCW-003 Drawn : JLM 9/24/2008 Rev : 001

DPW DPWH

Zone Switching Relay WiringNOTES DSR-100FTO SET DSR-100F

1 PRESS UNIT ON/OFF BUTTON

2 PRESS HEATING SET TEMPERATURE BUTTON

YEL



BRN BRN4 PRESS DHW SET

TEMPERATURE BUTTON


WHEN X-X CONTACT IS CLOSED UNITWILL START AND PROVIDE CLOSED LOOPLOOP HEATING WATER AT THETEMPERATURE SELECTED



DIAGRAM SHOWS AN SR504, HOWEVER DIAGRAM CAN BE USED WITH ALL ZONE CONTROL PANELS (SR, ZV, ETC) 8750 Pioneer Blvd, Santa Fe Springs CA 90670

WITH AN X - X OR 0V CONTACT Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

Title : DPW & TACO SR504 ZONE CONTROL PANEL WIRINGDrg # : QUI-ZW-002 Drawn : JLM 9/24/2006 Rev : 001

DPW DPWH

SPST Relay WiringNOTESWIRING DIAGRAM FOR CONTROL OF AAIR HANDLER & HW COIL, WHERE PRIMARY PUMP IN DPW IS CAPABLEOF PROVIDING FLOW TO FAN COIL DSR-100F

TO SET DSR-100F CONTROLLERYEL

1 PRESS UNIT ON/OFF BUTTONYEL

2 PRESS HEATING SET TEMPERATURE BUTTON BRN BRN

3 USE UP AND DOWN ARROWS TO SELECT DESIRED HEATINGWATER TEMPERATURERANGE 122-176 DEGF SPST

RELAY4 PRESS DHW SET 24V AC

TEMPERATURE BUTTON


6 INSTALL AN AQUA STAT IN THE HTG COILOF THE AIR HANDLER - WIRE TO FAN C CMOTOR TO STOP FAN OPERATION IF COIL TEMPERATURE FALLS e.g. DHWPRIORITY OR INITIAL START UP W W

WHEN T-STAT CALLS FOR HEAT, RELAY WILLCLOSE AND DPW UNIT WILL STARTWHEN T-STAT IS SATISFIED RELAY WILL OPEN AND 8750 Pioneer Blvd, Santa Fe Springs CA 90670

UNIT WILL STOP Tel : 562 699 6066, Fax : 562 699 4351, Web : w w w .Quietside.com

DSR CONTROL WILL REMAIN LIT AT ALL TIMES Title : DPW & SPST RELAY CONTROL WIRINGDrg # : QUI-DPW-ZW-001 Drawn : JLM 9/6/2006 Rev : 001

DPW DPWH

HYDRONICFAN COILSTD 24V

AC HEAT COOLTSTAT

DSR-100F Unit Controller • MUST BE USED• Will display Air Temp

when first connected• Will display actual closed

loop water temperature• DHW Water temperature

is set from the controller• Fault Codes are

displayed

• DON’T ever put 24V AC to the DSR

Commissioning the DPWOnce unit is piped, vented and wired it can beCommissionedFill the closed loop system with water

1. Isolate DPW from the closed loop using the shut off valves

2. Attach hose from DHW water supply to boiler drain that is open to the closed loop system

3. Fill System – add glycol if required – Only use Fernox Alphii or No Burst glycol as they do not attack the seals – Maximum Glycol 30%

4. Once system is full, open shut off valves filling the DPW

Operation of the DPW• DSR – Heating Water temp was set

• Call for heat : Unit will pre purgePre IgnitionOpen Gas valve

(Solenoids)Establish combustion at

60% capacityModulation to load using

temp sensor in DPW• After Call Post Ignition

Post purge

More Domestic Hot Water

• DHW Temperature is controlled but you MUST INSTALL A MIXING VALVE to prevent scalding

• Minimum flow rate of 0.7 GPM is required to trigger operation in DHW mode

• Flow switch is normally open – closed circuit = DHW mode

• DHW production is always prioritized over heating function – also unit does not need to be in heating mode to provide DHW

LP Gas ConversionLP Conversion Kit

Tools required

Crescent wrench,

Philips/Flat screwdriver, Manometer• 1. Change Gas Manifold

• Then reassemble and follow set up instructions

• Dip Switch #1 and 2 must be switched for LP

• Gas Pressure set up is shown later

Inlet Gas Pressure

• Natural Gas minimum pressure 5.8” WC, Maximum 9.7” WC

• LP Gas minimum pressure 9” WC, Maximum 13” WC

• If unit has been set up but still is noisy check Inlet gas pressure, especially under normal start up

• There is not a tapping for Inlet pressure on the gas valve

Inlet Gas Pressure

• ENSURE INLET GAS PRESSURE ON START UP DOES NOT CHANGE FROM THE INLET PRESSURE MEASURED WHEN UNIT IS NOT RUNNING

• If this does occur a new regulator may be required

Annual MaintenanceRoutine Maintenance is recommended - Water

• Check closed loop system pressure is still at 1 (15 psi)

• Check for leaks at all unions and connections

• Flush and clean Condensate siphon – carbon in the gas supply can give the siphon a dirty gray color, use a little washing up liquid to clean – refill with water

• Check Auto Air bleed screw is loose

Annual MaintenanceRoutine Maintenance is recommended - Electric

• Check all exposed electrical connections are secure Inspect for any signs of overheating

• Check Dip Switch settings

• Energize heating zones to check control circuitry, make sure DSR is set correctly to required water temps and mode

Annual MaintenanceRoutine Maintenance is recommended - Gas

• Check Inlet gas piping, pressure for leaks and/or pressure deviations

• Remove igniter check for carbon make sure connections to Ignition TX and flame sensor are tight

• Start unit, check flame color• Switch into low fire mode

check gas valve settings Re-check in High Fire mode

Annual MaintenanceRoutine Maintenance is recommended - Vent

• Check termination for any blockage, make sure any debris is thoroughly removed

• Check venting for any cracks or loose joints

• Check Air Pressure switch operation

• Check Exhaust Duct inside unit for leaks

Annual Maintenance

Routine Maintenance is recommended - DHW

• Isolate DHW system, then using hose bibs back flush DHW Heat Exchanger using lime away (pre mixed) or solution of ethanoic acid (Vinegar)

• Repeat several times in areas of high mineral content to ensure removal of all debris

Checking ComponentsElectrode and Flame Detector

• Single Electrode so no gap, check the ceramic

• The igniter has the pink marking

• Electrode Voltage – 15-18kV DO NOT TOUCH!

• Flame Detector – Faces away from electrodes

• Flame Detector Voltage200V to ground

Checking Components

Strainer• Closed system strainer on

return side• Catches debris before

passing through the pump• Held in place with a wire

retainer, be careful when replacing it

Technical Support

• Both East And West Coast Technical Support is available

• East Coast : Hours 8AM to 5PM EST Tel : 717 243 2535 (866 243 6498)

• West Coast : Hours 8AM to 5:30PM PST Tel : 562 699 6066 x 3 (888 699 6067)

• Website – www.Quietside.com

http://www.quietside.com/

DPW Warranty

• All models, FIVE YEAR PARTS – no labor allowance

• Primary and Secondary Heat Exchangers carry a 12 Year warranty

• Domestic Hot Water Heat Exchanger – 12 years

THANK YOU

FOR

ATTENDING

ANY QUESTIONS??

Documents

TECHNICAL QUIETSIDE DPW Dual Purpose Water Heating Season 2008/2009 QS-DPW-CT-001