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Installation Instructions
The T9500 Thermostat Backplate
To remove the thermostat backplate:
Using the Finger Pull Areas, pull the
front housing away from the backplate.
Look for these tabs to locate
the pull areas
W3
W2
W1/O/B
Y2
Y1
G
R
C
SENSOR
IMPORTANT: This thermostat requires both R (24 VAC Return) and
C (24 VAC Common) be connected to the backplate terminals.
SENSOR
3rd stage heat circuit /2nd stage aux heat/humidification/dehumidification
2nd stage heat circuit/1st stage aux heat
1st stage heat circuit/reversing valve
2nd stage compressor relay
1st stage compressor relay
fan relay
24 VAC return
24 VAC common
remote/outdoor/supply/return sensor connections
NOTE:
The backplate does not fully
cover a full size vertical junction
box. The ACC-WALLPLT
touch screen wallplate or
a single-gang, horizontally
mounted junction box would
be needed for that type of
installation.
Backplate
Pull out with thumbs in these areas
79
Front Housing
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