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Terminal Definition
Terminal
L
C
G
Y
Y2
W
W2/E
W3/O/B
RH
RC
L
C
G
Y
Y2
W
W2/E
W3/O/B
RH
RC
Convectional Heat
Cool
System
No Use
24VAC Common for control ciruit and thermo-
stat power input
FAN
1st stage cooling
2nd stage cooling
1st stage heating
2nd stage heating
3rd stage heating
24VAC Power supply for Heating side
24VAC Power supply for Cooling side
Heat Pump
System
System Monitor
1st stage
compressor
2nd stage
compressor
Auxiliary heating
Emergency
heating
Changeover Valve
20
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