Alternate Furnace Interlock Wiring
W
FOUR
WIRE
TWO WIRE
heating only
W
R
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
TWO
WIRE
Alternate Furnace Interlock Wiring (w/Damper)
W
FOUR
WIRE
TWO WIRE
heating only
W
R
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
TWO
WIRE
THERMOSTAT
TERMINALS
R
G
Y
COOLING SYSTEM
THERMOSTAT
TERMINALS
R
G
Y
COOLING SYSTEM
COM
COIL
CONTROL RELAY
(TERMINAL LABELING MAY VARY)
RV-CTRL
24VAC
RV-CTRL
24VAC
C
R
SHUTOFF
SHUTOFF
DAMPER
DAMPER
NO
NC