Sample Wiring Diagrams
Gas or Electric Heat
Page 9
4 Wire, 1 Stage Cooling, 1 Stage Heat-Heat Pump with O reversing valve.
Residential Heat Pumps, split systems & package units, with no auxiliary heat.
FAN
POWER
G
R
COMPRESSOR
Y
W
Y
B
O
G
R
4 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.
REVERSING VALVE
O
INSTALLATION INSTRUCTIONS
C
Common wire optional
*
Common wire is optional in all installations. If a common wire is not used the
thermostat must be powered by the two AA Alkaline batteries (page 14). These
batteries must be replaced each year or when the Low Battery indicator is
displayed (page 3, 6).
*