FAN
POWER
G
RY
3 Wire, 1 Stage Cooling
Residential Electric Cool units
W
Y
B
O
G
R
C
Common wire optional
*
*
Sample Wiring Diagrams
Page 13
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 6). These
batteries must be replaced each year or when the Low Battery indicator is
displayed (page 2, 5).
3 Conductor 18 to 22 gauge
unshielded cable from the
thermostat to the equipment.
COOLING