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
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