Contents
Contents
General.................................................................................... 5
Safety....................................................................................... 5
Inspection......................................................................... 5
Limitations........................................................................ 6
Piping considerations...................................................... 6
Unit installation...................................................................... 8
Transportation and handling......................................... 8
Selecting a location for installation............................... 8
Installing the drain elbow and drain hose.................... 9
Installing the outdoor unit............................................ 10
Affixing the brand label................................................. 10
Precautions for brazing of lines................................... 11
Connecting the refrigerant lines.................................. 11
Refrigerant charging..................................................... 12
Electrical connections.......................................................... 13
Connecting HMH72B24 and HMH72B36 wiring......... 15
Connecting HMH72B48 and HMH72B60 wiring......... 16
Electrical data................................................................. 17
Performing a test run.................................................... 17
Technical information.......................................................... 18
Refrigerant cycle............................................................ 18
Wiring diagrams............................................................. 22
Control board................................................................. 24
Field settings.................................................................. 28
Running a parameter query......................................... 29
Oil trap............................................................................. 30
Control mode.................................................................. 31
Sensor parameter.......................................................... 31
Troubleshooting................................................................... 32
Checking components................................................... 32
Fault codes...................................................................... 35
Troubleshooting guide.................................................. 46
Start-up sheet....................................................................... 49
Johnson Controls Ducted Systems
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump
3
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