WIRING DIAGRAM Variable Speed Air Handler - Nordyne

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WIRING DIAGRAM Variable Speed Air Handler - Nordyne

Installation InstructionsIndoor Air Handlers with Blower Relay (GB3) - Variable Speed Conversion KitDESCRIPTIONThese instructions are primarily intended to assistqualified individuals experienced in the proper installation ofheating and/or air conditioning appliances. Some local codesrequire licensed installation/service personnel for this typeequipment. All installations must be inaccordance with these instructions and with all applicablenational and local codes and standards.Before beginning the installation, read these instructionsthoroughly and follow all warnings and cautions in the instructionsand on the unit. When performing brazing operationshave a fire extinguisher readily available and use a quenchingcloth and brazing shield.Improper installation, service, adjustment, ormaintenance can cause fire, electrical shock or other conditionswhich may result in personal injury or property damage.Unless otherwise noted in these instructions, only factoryauthorized kits or accessories may be used when modifyingthis product.GreenRedGRBrown W1WhiteOrange W2(from 9-pin plug)GreyOrange(from board)YellowCO/YThermostatG R W YNOTE: Connect "W"leads together whenstaged heater kits areused without outdoorthermostatsC YNOTE: In AC applications, the O and Y connectionmust be connected as shown.Air Handler A/C OD SectionTypical Air Conditioner withVariable Speed Air HandlerINTRODUCTIONThese instructions are for the installation of a Variable SpeedConversion Kit in an air handler with blower relay, manufacturedafter August 1999. Refer to the Air Handler InstallationInstructions for details necessary for the proper set-up of theunit. A copy is included with this kit.INSTALLATION (Air Handlers with BlowerRelay) GB31. Parts packages "GB3" and "common parts" will be requiredto complete this conversion.2. Remove and discard strain-relief bushing from the blowerdeck.3. Disconnect and pull blower motor wires back through theblower deck.4. Remove blower.5. Remove green wire from spade terminal of the blower relayand discard.6. Attach the variable speed circuit board and bracket to therail of the blower assembly with the 2 screws provided.7. Install variable speed blower.8. Connect the 6 low voltage wires from the low voltage wireharness supplied with the kit to the variable speed blowerboard as shown in the wiring diagram. See Figure 2.9. Cut the white 6-pin plug from the low voltage wire harnessthat was just connected to the variable speed blower board.10. Route wires through hole in blower deck.Note: If the unit has or will have a heater kit installed, moveto step 13.11. Connect the 3-wire (black, white and green) plug suppliedwith parts package to the mating connection on the motor.Note: Make sure ground wire is attached to the blowerhousing assembly with screw provided in parts package.12. This step required for units without heater kits. Separate theblack and white wires coming directly from the motor. Cutthe terminals off and strip the ends of the black and whiteGreenRedBrownGRWhiteOrange W2(from 9-pin plug)GreyOrange(from board)YellowW1COYThermostatG R W2C E O YODStatC O YAir HandlerHeat Pump ODSectionTypical Heat Pump with Optional OutdoorThermostat and Variable Speed Air HandlerFigure 1. Typical Air Conditioning andHeat Pump System Connectionswires. Connect them to the power leads as shown in thewiring diagram. Secure with wire nuts. See Figure 2.13. On air handler units that have or will have an electric heaterkit installed, separate the black and white wires comingdirectly from the blower motor. Attach the white motor wireto the open terminal on the circuit breaker or terminal stripon the same pole as the red wires. Connect the black wireto the open terminal on the circuit breaker or terminal stripon the same pole as the black wires.14. Route the low voltage wires from the harness through thebushing located in the top of the electrical panel along withthe existing thermostat leads.15. Connect the thermostat wiring as shown in Figure 1.16. Attach wiring diagram (710288) supplied with parts packageto the front of the blower housing.W2ER


Motor Settings WIRING DIAGRAMB-CabinetSwitchNumberNOTE: 1 = ON, 0 = OFFCFM 1 2 3 4720 0 0 0 1800 0 0 0 0860 1 0 0 1885 0 0 1 0960 1 0 0 01060 1 0 1 01125 0 1 0 11185 1 1 0 11250 0 1 0 01315 1 1 0 01375 0 1 1 01450 1 1 1 0C-CabinetSwitchNumberCFM 1 2 3 41075 0 0 0 11140 1 0 0 11225 0 0 0 01300 1 0 0 01380 0 0 1 01465 1 0 1 01555 0 1 0 11665 1 1 0 11775 0 1 0 01900 1 1 0 02000 0 1 1 02150 1 1 1 0Variable Speed Air Handler(Converted from Standard Air Handler)CRWWGYOGrey Fuse240/(if installed) NORedBrownOrangeGreenYellowOrangeGreyGreenPCBGRedC OB1 B2 Y W RR1Jumpers1 2 3 4 5 62082491011121314151612345678RedWhite91011121314151612345678WhiteGrey123456789Wire HarnessHeater KitPlug9101112131415161234567891011121314151612345678Figure 2. Variable Speed Air Handler Wiring Diagram.High VoltageLow VoltageFactory WiringHigh VoltageLow VoltageField WiringMOTOR1234512345Thermostat ConnectionsSee Note 4NOTES:1) Not suitable for systemsexceeding120V to ground2) If any wiring must be replaced,it mustbe replaced with 105Cwire of the samegauge.3) When connecting accessoriesto circuitboard, remove thejumper supplied withthe unit.4) For A/C applications, connect"O" to "Y".127 8123456789LL1 Power Supply(not usedwhen heater}kit is installed)2POWER SUPPLY CONNECTIONSWHEN HEATER KIT IS INSTALLEDFROMVARIABLESPEED BLOWERWHITEBLACKCIRCUITBREAKERSSUPPLY VOLTAGEGROUNDWhiteBlackBlackRedCom NCBlack orBlueMinimum ElectricHeat Air-Flow(all models)Nom.KW0-56-1011-1516-20SwitchNumberCFM70080095011005 60 01 00 11 1DelaySettings(all models)DelayDesc.Delay ADelay BNo DelayDe-HumSwitchNumber7 80 00 11 01 1Red or OrangeINSTALLER: PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH THE HOMEOWNER.O'Fallon, MO RR¢708215­¤708215708215A (Replaces 7082150)Specifications and illustrationssubject to change without noticeand without incurring obligations.Printed in U.S.A. (04/03)

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