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24VAC
Supply
Compressor
Stage 1
Auxiliary
Heat
Reversing Valve
Cool
Fan
Control
RC/R
C
Y1
Y2
E
W2 O
B
G
Heat Pump Systems
Optional
Jumper
Compressor
Stage 2
Emergency
Heat
Reversing Valve
Heat
System
Monitor
L
24VAC Common
(if available)
Number of wires connected depends on the heat pump system requirement. Not all
terminals need to be connected.
• Add jumper between W2 and E terminals on systems without an E wire.
44002-01 r051807