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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.
2.1.1 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.
2.1 Expose wires connected to
old thermostat
✔ 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.
Your old thermostat may consist of:
• 3 parts: a cover, base and wallplate
or
• 2 parts: a cover and wallplate
Wallplate
Wallplate
Base
Cover
Cover
3-Part unit
2-Part unit