41652_model44760_web.pmd

32

 

OPERATION

32

 

 

 

 

 

Power Switch

 

 

 

 

 

 

 

The Power switch on the front of the thermostat determines the operating mode of the thermostat.

 

 

 

You may select ON, OFF or Emergency Heat (EM). When the Power Switch is OFF, all outputs are posi-

on off em

 

tively disconnected from the system.

NOTE: Anytime you install or remove the thermostat from the wallplate, slide the Power

Switch to the OFF position to prevent the possibility of a rapid system On-Off.

System Selection Key

system

■ Press to select the desired system.

 

When Auto is selected, the system will change between Heat and Cool automatically. Refer to the Auto Season Changeover section on page 39.

NOTE: The default system selection at power-on or after a reset is HEAT. Therefore it is recommended that 2 AAA batteries be used for backup during power outages.

System

System

System

System

33

Fan Key

33

fan

■ Press to set the fan operation.

■ AUTO: the fan will turn on with the system.

 

Fan

ON: the fan will run continuously.

PGM Auto or ON: (Programmable Fan) The fan will select AUTO or ON, depending on the setting in the programs. Refer to the Program Option section on page 30.

NOTE: The fan must be set to “PGM” for the fan’s program settings to take effect.

Fan

Fan

Fan