12
Sample Wiring Diagrams
Gas or Electric Heat
4 Wire, 1 Stage Cooling, 1 Stage Heating
Residential Gas or Electric Heat, Electric Cool, split systems & package units.
For jumper configuration see pages 18 and 19.
*Common wire is optional in all installations. If a common wire is not
used the thermostat must be powered by two AA alkaline batteries. These
batteries must be replaced (page 10) each year or when the Low Battery
indicator is displayed (page 3).
POWER
R
FAN
G
COMPRESSOR
Y
W
GAS OR
ELECTRIC HEAT
4 Conductor 18 to 22 gauge
unshielded cable from the
thermostat to the equipment.
Common wire optional
*
Factory installed
jumper between
RC and RH
C O/B
Y
W G RC RH
