CT50A, CT51A, CT53A THERMOSTATS
3
69-0265ES
THERMOSTAT OPERATION
!
On the CT51A, the system switch controls as follows:
HEAT—heating system only operates.
OFF—heating and cooling systems are disconnected.
COOL—cooling system only operates.
!
The fan switch controls as follows:
AUTO—fan on when heating or cooling system
operates.
ON—fan operates continuously.
NOTE: In the following instruction, disregard cooling
directions if not applicable to your system.
!
Turn on power to the heating/cooling system.
!
Observe system operation for at least one cycle on
both heating and cooling.
!
To observe: Place the system switch at HEAT position
and fan switch at AUTO.
!
Move the temperature sensing lever to 10
°
F (6
°
C)
above room temperature. The furnace should turn on.
A short warm-up period may be required before the
system fan turns on.
!
Place system switch at COOL position and move
temperature sensing lever 10
°
F (6
°
C) below room
temperature. The cooling equipment should turn on
and the system fan should turn on.
NOTE: Some systems have a time delay that can pre-
vent operation up to 5 minutes.
!
Turn the fan switch to ON. The system fan should turn
on, and operate continuously. The fan should continue
to operate at any system switch or thermostat setting.