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2
WARNING
If your old thermostat is attached to a
junction box in the wall, it is likely that
120V are present. To prevent electrical
shock hazard, do not proceed . Call a quali-
fied electrician.
CAUTION
1. Disconnect power supply to prevent
electrical shock or equipment damage.
2. After wiring is complete, push excess
wire back into the hole, and plug hole
with nonhardening caulk, putty, or insu-
lation to prevent drafts from affecting
thermostat operation.
Remove cover from old thermostat. If it doesn't
snap off when pulled firmly from the bottom,
check for a screw that locks the cover.
Loosen screws holding thermostat to subbase,
wallplate or wall, and lift away.
REMOVE OLD THERMOSTAT
Disconnect wires from old thermostat or sub
base. Always label all wires as you disconnect
them from your old thermostat. Use the CT8611 Wire
Tags provided to label each wire with the appropriate
terminal designation as you remove it. It is important
to note the terminal designation when removing wires.
Not all thermostats are wired by color code.
Keep the wires from falling back into the wall
by wrapping them around a pencil, as shown.
5
WIRES THROUGH
WALL OPENING
M5136
69-0816
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