TYPICAL SYSTEM WIRING DIAGRAMS
2 HEAT/1 COOL (DUAL FUEL)
OPTIONAL
REMOTE SENSOR
TERMINALS
S2
S1
AUX
SC
OUTDOOR
INDOOR
SENSOR
SENSOR
Switch Settings
Switch 1 =
ON
Switch 2 =
OFF/ON
Switch 3 =
OFF
Switch 4 =
ON
W2
Y1
Y2
AUX
O/B
REV
VALVE
COMP 1
RELAY
Heat Pump
OFF
= 'O'
ON
2 Heat / 1Cool dual fuel
Locks out heat pump when furnace is energized
19
W1
G
R
C
THERMOSTAT
EQUIPMENT
AUX
RELAY
FAN
RELAY
24 V
= 'B' Reversing Valve
LINE