Sample Wiring Diagrams
Gas or Electric Heat
Page 13
FAN
COMPRESSOR
POWER
G
R
Y
W
Y
B
O
G
R
3 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.
3 Wire, 1 Stage Cooling
Residential Electric Cool units
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).
*