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STEP 7 Mount Thermostat Mounting Plate
□ Position mounting plate on wall. Use a level
to make sure mounting plate is level. Use a
pencil to mark the two mounting holes.
□ Reposition mounting plate over holes,
pulling wires through wiring opening. Loosely
insert two mounting screws into holes.
□ Remove mounting plate from wall, and drill
3/16 inch holes in wall (if drywall) as marked.
For firmer material such as
plaster or wood,
drill 7/32 inch
holes. Gently
tap anchors
(provided)
into drilled
holes until
flush with
the wall.
□ Level for appearance only; thermostat will
function properly even when not level. Tighten
mounting screws.
LEVEL
M1714A
18
STEP 8 Wire Thermostat Terminals
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.
□ In 5-wire installations only, be sure to
remove the factory-installed jumper
connecting terminals R
and Rc.
METHOD TO INCREASE WIRE LENGTH
□ Match the letter of your old thermostat wire
with the terminal of the corresponding letter on
the back of your new thermostat. Refer to
illustrations on pages 22 and 23. Hold the
thermostat as shown to minimize need for wire
extenders. If wires are still too short, use wire
connectors (purchased locally) to extend
wires. See illustration (right) for guidelines on
using wire extenders.
WIRE NUT SIZE
FOR TWO
18-GAUGE WIRES
6-in. |152 mm] OF
18-GAUGE
THERMOSTAT
WIRE. MATCH
INSULATION
COLORS OR
MARK WIRE ENDS.
19
INSTALLATION
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