44067-01  •  08/03/2012
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1.  Holds 2 “AA” Batteries. 
2.  HE/HG Switch - allows you to set your furnace to Gas/Oil or Electric, based 
on the type of system you have.
3.  Allows your thermostat to operate your HVAC system* properly by indicating 
the system type that you have.
*Conventional System: Uses a condensing unit for cooling and a 
separate furnace system for heating.
*Heat Pump System: Uses the condensing unit for both heating and 
cooling.
NOTE:  If you are unsure of your system type it may be necessary to 
contact our technical support department at 1-888-830-1326, your HVAC 
manufacturer, or a local HVAC technician to determine this. Improper 
selection of your system type could cause the thermostat to not operate your 
system properly.
Know Your ermostat