4
Do not remove wallplate yet
3 Label Wires with Tags
Label the wires using the supplied wire labels as you disconnect them, then
remove the old wallplate. Wire color might not match labels.
Wire Labels
C
C
MCR33823
Terminal
designation
If you have an older thermostat with
a sealed mercury tube, turn to page
2 for proper disposal instructions.
Terminal
designation
C
C
MCR31537
2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
4 Separate Wallplate from New Thermostat
Remove wallplate from the new
thermostat and mount onto wall.
Wallplate
M28073
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