Whirlpool WAHMS Instruction Manual

AIR HANDLER INSTALLATION INSTRUCTIONSAIR HANDLER SAFETYTable of ContentsAIR HANDLER SAFETY ...

10Make Electrical Connections—Models with Factory-Installed Electric Heat1. Determine the number of circuits needed to supply the heater with electric

11Low Voltage ConnectionsRGBUThermostat Air HandlerCondensing UnitCooling Only ApplicationHeat Only ApplicationThermostatAir HandlerRGWAir Handl

12Wiring Diagram—Blower (PSC Motor)Wiring Diagram—Optional Electric Heat12345618 BK2418 R18 BUCTRCOM208V240V14 Y L214 BK L124V(H) (H)5312TD **14 R18

13Wiring Diagram—Blower (Variable Speed Motor)Power (Factory Wired)Control (Factory Wired Transformer TR Blower Motor

14Complete InstallationNOTE: Refer to outdoor unit installation instructions for system start-up instructions and refrigerant charging instructions.Pr

15Check Airflow (Variable Speed Motor)For proper cooling operation, the airflow through the indoor coil should be between 350 and 450 CFM per ton of c

16Control Board Taps and Dehumidify Resistor.4. If desired, adjust ADJUST tap from NORM: (+) will increase airflow by 10% or (-) will decrease airflow

17WAHMV42 Continuous BlowerX 700 600 500 400Cooling ** X X 1,400 1,200 1,000 800Heating X 1,400 1,200 1,000 800Auxillary HeatX X *** *** *** *** 1,400

18Blower Performance Chart—Variable Speed MotorThe versatility of the variable speed motor enables the air handler to tailor its performance to the di

19WAHMV42 Y1 A 920 970 970 970 980 990 990 1,000B 830 830 840 850 850 850 850 850C 690 700 700 700 710 710 720 710D 570 570 570 580 580 590 570 550Y

2INSTALLATION REQUIREMENTSThese instructions are intended as a general guide only for use by qualified persons and do not supersede any national or lo

20WAHMV60 Y1 A 1,250 1,270 1,270 1,300 1,290 1,290 1,290 1,280B 1,120 1,120 1,130 1,130 1,140 1,130 1,130 1,130C 990 990 990 980 980 970 960 970D 84

21SEQUENCE OF OPERATIONCooling (Cooling Only or Heat Pump)When the thermostat calls for cooling, the circuit between R and G is completed, and the blo

22AIR HANDLER MAINTENANCEIMPORTANT: Do not operate system without a filter. A filter is required to protect the coil, blower, and internal parts from

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Keep this book and your sales slip together for future reference. You must provide proof of purchase or installation date for in-warranty service.Writ

3Installation ClearancesNon-Ducted Return Closet InstallationThe air handler can be installed in a closet with a false bottom to form a return air ple

4.Drain Pan ConnectionsHorizontal Installations can be either “Right” or “Left.”For Horizontal Right Installations, a drain pan location change is req

53. Remove screws from the coil support bracket and lift off of the air handler. Set aside.4. Remove the coil/drain pan assembly by lifting and slidin

6Electrical Requirements—Models With Factory-Installed Electric HeatNOTES: Use copper conductors only. All field wiring must be done in accordance

7NOTE: If any damages are discovered and reported to the carrier, do not install the air handler because your claim may be denied.If a filter is to be

8Install DuctworkIMPORTANT: Install ductwork in accordance with NFPA 90B Standard for the Installation of Warm Air Heating and Air-Conditioning Syste

9Make Electrical Connections—Models Without Factory-Installed Electric Heat240-Volt Installations1. Disconnect all power supplies.2. Remove the blower