13
Sample Wiring Diagrams
Gas or Electric Heat
4 Wire, 1 Stage Cooling, 1 Stage Heating-Heat Pump with O reversing valve
Residential Heat Pumps, split systems & package units, with no auxiliary heat
For jumper configuration see page 20.
*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
O
Y
REVERSING VALVE
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
