McQuay MWH

31
Start
2 seconds
Indoor fan
Outdoor fan 1
15 seconds
15 seconds
15 seconds
15 seconds
Outdoor fan 2
Outdoor fan 3
Outdoor fan 4
2 seconds
2 seconds
2 seconds
2 seconds
Compressor 1*
Compressor 2*
Compressor 3*
Compressor 4*
Start
2 seconds
Indoor fan
Outdoor fan 1
15 seconds
15 seconds
15 seconds
15 seconds
Outdoor fan 2
Outdoor fan 3
Outdoor fan 4
2 seconds
2 seconds
2 seconds
2 seconds
Compressor 1*
Compressor 2*
Compressor 3*
Compressor 4*
2 seconds
All 4 way valves
15 seconds
Heater 1*
15 seconds
Heater 2*
7. Sequential Control for Cool Mode
The starting sequence for indoor fan, outdoor fan and compressors is shown as below:
*If available and applicable
The compressors will be turned on one by one depending on the on/off conditions shown in the
above.
8. Sequential Control for Heat Mode
The starting sequence for indoor fan, outdoor fan and compressors is shown as below:
*If available and applicable
The compressors will be turned on one by one depending on the on/off conditions shown in
theabove.