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Sample Wiring Diagrams
7 Wire, 2 Stage Cooling, 2 Stage Heat
O
W2
Y2
R
W1
** Commercial heat pumps do not have
the heat pump turned on in advanced setup.
5 Wire, 1 Stage Cooling, 1 Stage Heat - Heat Pump*
O
R
W2
Y2
W1
* If using residential heat pump, this option
must be selected on during advanced setup.
Y1
G
C
Thermostat
2nd stage compressor relay
*** If using electric heat, this option must
Y1
G
C
Thermostat
Page 7
Commercial Gas or Electric Heat ***,
Electric Cool, split systems & package units
including Commercial Heat Pumps **
24 vac common
fan relay
compressor relay
1st stage heat circuit
24 vac return
2nd stage heat circuit
be selected on during advanced setup.
No auxiliary heat, residential Heat Pumps ,
split systems & package units
24 vac common
fan relay
compressor relay
reversing valve
24 vac return
L
E
C
G
Y1
O
W1
R
Y2
W2
L
E
C
G
Y1
O
W1
R
Y2
W2
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