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Part 2 Remove Old Thermostat and
Install New Thermostat
Do not disconnect wires from the old thermostat until you
label all the wires
according to this manual.
2.1 Expose wires connected to
old thermostat
2.1.1
After turning off power to your heating & cooling system,
expose wallplate with wires and wire terminals. The required
steps vary depending on your old thermostat type.
Your old thermostat may consist of:
•
3 parts:
a cover, base and wallplate
or
•
2 parts:
a cover and wallplate
4
3-Part unit
Cover
2-Part unit
✔
The Cover:
This usually pulls off, but is sometimes secured by a
screw which must be loosened.
✔
The Base:
This either pulls off or needs to be removed by loosening
screws under the cover.
✔
The Wallplate:
This is removed by loosening the screws that hold
the thermostat to the wall.
Base
Wallplate
C
AUX
G
E
Y
L
W
RC
R
Cover
Wallplate
5
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