POWER
W
R
2 Wire, 1 Stage Gas Heat
Residential Gas or Millivolt units.
W
Y
B
O
G
R
C
Common wire optional
*
*
Sample Wiring Diagrams
Page 12
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).
GAS OR
ELECTRIC HEAT
2 Conductor 18 to 22 gauge
unshielded cable from the
thermostat to the equipment.