69-1676—1 12
STEP 10. SET THE SYSTEM AND FAN SWITCHES (CT8775C ONLY)
System Switch (see Fig. 5)
❑Heat: The thermostat controls your heating system.
❑Off: Both the heating and cooling systems are off.
❑Cool: The thermostat controls your cooling system.
Fan Switch (see Fig. 5)
❑Fan Auto: Normal setting for most homes. The fan only runs with the heating and cooling system.
❑Fan On: The fan runs continuously. Use for improved air circulation.
Fig. 5. CT8775 Thermostat (features and operation).
ROOM
SET
DISPLAYS ROOM
OR SET TEMPERATURE
M19512
(CT8775C ONLY)
SELECTS
ON/AUTO
(CT8775C ONLY)
SELECTS
COOL/OFF/HEAT
DISPLAYS AND ADJUSTS
TEMPERATURE SETTING/
TURNS BACKLIGHT ON
SHOWS THAT THE
CURRENT ROOM
TEMPERATURE IS
DISPLAYED
SHOWS THAT THE
CURRENT TEMPERATURE
SETTING IS DISPLAYED