Honeywell RTH8500 Wi-Fi Series Thermostat User Guide
Installing your thermostat
2
Remove old thermostat faceplate
and leave wires connected.
If you have an older thermostat with a
sealed mercury tube, turn to page ii
for proper disposal instructions.
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
C
wifithermostat.com/videos
Important! C wire is required and
is the primary power source for
your thermostat. Without a C wire,
your thermostat will not power up.
Terminal
designation
3
Label wires.
Do not label by wire color. Use
the supplied sticky tags to label
each wire as you disconnect it.
Label wires according to the old
thermostat terminal designations,
not by wire color.
Sticky tag
Blank tags
Note: If no tag matches a
terminal designation, write the
appropriate letter on a blank
sticky tag.
4
Remove wallplate.
Remove the old wallplate from
the wall after all wires have been
labeled and disconnected.
Terminal
designation
C
33-00133EF—01
4
| General | Details |
|---|---|
| Name | Honeywell RTH8500 Wi-Fi Series Thermostat User Guide |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.23 MB |
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