TYPICAL SYSTEM WIRING DIAGRAMS
2 HEAT/2 COOL (GAS)
OPTIONAL
REMOTE SENSOR
TERMINALS
S2
S1
AUX
SC
OUTDOOR
INDOOR
SENSOR
SENSOR
Switch Settings
Switch 1 =
OFF
Switch 2 =
OFF
Switch 3 =
ON
Switch 4 =
OFF
W2
Y1
Y2
AUX
O/B
HEAT 2
COOL 2
RELAY
RELAY
COOL 1
RELAY
Heat/Cool
Fan energized on call for cooling
Multi-stage
Leave OFF
16
W1
G
R
C
THERMOSTAT
EQUIPMENT
HEAT 1
RELAY
FAN
RELAY
24 V
LINE