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Les langues disponibles
Les langues disponibles
WIRING DIAGRAM
WIRING DIAGRAM TO
FURNACE
FOR A FURNACE
CONNECTION TO
A COOLING SYSTEM:
On some newer furnaces and
older thermostats, energizing the
R and G terminal at the furnace
has the effect of energizing the
Y at the thermostat and thereby
turning on the cooling system. If
you identify this type of thermo-
stat, you must use the "Alternate
Furnace Interlock Wiring"
AS PER BUILDING CODES AND INSTALLATION REqUIREMENTS FOR COMBUSTION APPLIANCES: AIR RETURN
DUCTS, OR OPENINGS FOR AIR RETURN, SHOULD NOT BE PLACED IN ENCLOSED SPACES CONTAINING
COMBUSTION APPLIANCES THAT ARE SUBJECT TO SPILLAGE
All manuals and user guides at all-guides.com
(CONT'D)
Standard Accessory Control Contact
Standard Furnace Interlock Wiring
FOUR
WIRE
TWO WIRE
heating only
W
R
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
Alternative Accessory Control Contact
Alternate Furnace Interlock Wiring
FOUR
WIRE
TWO WIRE
heating only
W
R
WIRE JOINT
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
THERMOSTAT
TERMINALS
R
G
W
Y
TWO
WIRE
THERMOSTAT
TERMINALS
R
G
W
Y
TWO
WIRE
COOLING SYSTEM
COOLING SYSTEM
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