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Sample Wiring Diagrams
7 Wire, 2 Stage Cooling, 2 Stage Heat - Heat Pump*
Most residential split and package Heat Pumps
with auxiliary Heat.
If using a Commercial heat pump,
this option should be set to OFF
during Advanced Setup.
W2
Y2
DEHUM
RS+5
RS1
RSGND
Optional wiring for
dehumidification
Pages 8, 19-20, and 24 of Owner's Manual
W1/O/B
Y1
G
HUM
R
C
7 conductor, 18 gauge
unshielded cable from the
thermostat to the equipment.
24 vac common
24 vac return
Fan relay
Compressor relay
Reversing valve
2nd stage
heat circuit relay
2nd stage
Compressor Relay
DEHUM terminal
on HVAC unit
(if available)
* If using a Residential heat pump,
this option must be selected ON
Page 12
during Advanced Setup.
(Fail to Heat)
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