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69-2790ES—05
8
C
M33823A
If you have an older thermostat
with a sealed mercury tube, turn
to page 2 for proper disposal
instructions.
Terminal
designation
Installing your thermostat
2 Remove old thermostat faceplate
and leave wires connected.
2a Take a picture of the
wire connections for later
reference.
2b If no wire is connected to
a terminal labeled C or no
C terminal exists on the
old thermostat, view the
Alternate Wiring videos at
wifithermostat.com/support
Important!
C wire is required
and is the power source for your
thermostat. Without a C wire, your
thermostat will not power up.
Note:
You will need a
picture of your wire
connections to wire the
new thermostat.
Содержание RTH9590
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