H
ea
t P
um
p
11
Wiring option 3 for Heat Pump
Use external power supply if you do not have a C wire
Use Elk TRG2440 or similar transformer
24 V AC adapter is
required if you do
not have a C wire.
If using an external
power supply, you
will have two wires
going to R terminal.
24 V AC hot
Reversing Valve
Compressor
Fan
Aux Heat
C
R
O
/B/
W
1
Y
G
W2
Summary of Contents for CY1201
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