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Sample Wiring Diagrams
7 Wire, 2 Stage Cooling, 2 Stage Heat
Commercial Gas or Electric Heat *,
Electric Cool, split systems & package units,
including Commercial Heat Pumps **
If using a Residential heat pump,
this option must be set to ON
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
1st stage heat circuit
2nd stage
heat circuit relay
2nd stage
compressor relay
DEHUM terminal
on HVAC unit
(if available)
* If using electric heat this option must
be set to ON during Advanced Setup.
** Commercial heat pumps do not have
the heat pump turned on in Advanced Setup.
Page 8
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