Thermostat Mounting Dimensions
Remove Old Thermostat
WARNING Electrical Shock Hazard. Can cause severe injury, death
or property damage.
Begin by turning off power to the heating circuit at the main service
panel.
1. Remove cover of old thermostat—cover normally snaps off when pulled
firmly from the bottom. If it resists, check for a screw that locks the cover.
2. Loosen screws holding thermostat base to outlet box and lift away.
3. Disconnect wires from old thermostat. As you disconnect each wire, tape
the end and label it with the letter of the terminal designation to make
reconnection to new thermostat easier.
4. Check the old insulation for cracks, nicks or fraying, and apply high quality
plastic tape where necessary for adequate insulation.
5. Retain the old thermostat for reference purposes and until your new
thermostat is functioning smoothly.
FRONT VIEW
80
•
70
•
60
•
50
•
˚F
4-3/8
(111)
2-7/8 (73)
SIDE VIEW
1
1/2 (13)
1-3/4
(25)
(48)
2-1/8
(54)
1/2 (13)
1-1/2
(39)
3
3-1/4
(83)
M5795B