TOTALINE P474-0140 Owner's Manual page 14

OWNER'S MANUAL
Sample Wiring Diagrams
4 Wire, 1 Stage Cooling, 1 Stage Heat, Heat Pump with O reversing valve.
Residential Heat Pumps, split systems & package units, with no auxiliary heat.
C
W2
Y
B
O
G
R
POWER
FAN
REVERSING VALVE
COMPRESSOR
*
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).
MODEL P474-0140
*
Common wire optional
4 Conductor 18 to 22 gauge
unshielded cable from the
thermostat to the equipment.
Page 14