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21 69-0733B—1
Loosen the terminal screws and slip each
wire beneath its matching terminal. Either
straight or wraparound wiring connections are
acceptable (see figure). Tighten terminals.
Plug the hole in the wall with insulation to help
prevent drafts from adversely affecting thermo-
stat operation.
M2486
FOR STRAIGHT INSERTION–
STRIP 5/16 in. [8mm]
FOR WRAPAROUND–
STRIP 7/16 in. [11mm]
NOTE: All wiring must comply with local codes
and ordinances. If unsure about household
wiring procedures, call your local heating/air
conditioning contractor.
Refer to masking tape labels you placed on
wires when you removed your old thermostat.
Match the letter of your old thermostat wire
with the terminal of the corresponding letter on
your new thermostat. Refer to figures on
pages 23 and 24 and Table 2 for typical wire
colors for easy matching.
TABLE 2—TYPICAL WIRE COLORS
AND FUNCTIONS.
Thermostat Connect to
Terminal Wire Color
a
Function
G Green Fan
Y Yellow Cooling
W White Heating
Rc Blue Air Conditioning
Power
R Red Furnace Power
a
Wire colors are typical; verify at heating/cooling
equipment connection.
In 5-wire installations only, be sure to re-
move the factory-installed jumper connect-
ing terminals R and Rc.
STEP 8 Wire Wallplate Terminals
INSTALLATION
22 69-0733B—1
24


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