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Sample Wiring Diagrams
FAN
COOLING
POWER
W
G
RY
W
Y
B
O
G
R
4 Wire, 1 Stage Cooling, 1 Stage Gas Heat
Residential Gas or Electric Heat *,
Electric Cool, split systems & package
units
Page 11
GAS OR
ELECTRIC HEAT
4 Conductor 18 to 22 gauge
unshielded cable from the
thermostat to the equipment.