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WIRING DIAGRAMS
HEAT PUMP SYSTEMS
NOTE:
Common wire connection is REQUIRED.
*Add jumper between W2 and E on systems without an E wire.
Optional Jumper*
THERMOSTAT WALLPLATE TERMINALS
G C L O
W2
E R
Y1
B
Emergency
Heat
Compressor
Stage 1
Common
Some terminals may not be used
Fan
Relay
Reversing
Valve Heat
System
Monitor
Reversing
Valve Cool
Auxiliary
Heat
24V
Supply
41652_model44760_web.pmd
53
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