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15
Find the other end of the unused wire
Locate the bundle of wires that are the same as the
ones at your thermostat.
The unused wire should be the same color as the one
near your existing thermostat. See Step 13 for the
color you wrote down.
16
Connect the unused wire to the C-terminal
Note: If there are existing wires in the C-terminal,
make sure they are still connected to the C-terminal
after connecting this wire.
17
Close the cover to the furnace or heating system
Be sure the cover is completely closed. Some systems
will not power up if the cover isn't fully closed.
You've connected the C-wire.
You will NOT need to use a C-Wire Adapter.
Go back to the wall where you are installing your thermostat and continue to "Installing Your
New Thermostat" on the next page.
12
G
C
R
W
Y
G
C
R
W
Y
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