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68-0148—1 10
T8131A,B,C; T8132A,B,C
CHECKOUT AND SETTINGS
Checkout and Settings
CHECKOUT
After the thermostat is mounted on the subbase, check operation as follows:
Model
Heating A,C B
For T8131 models only, first check that the green power LED is lit, indicating the
thermostat is powered properly.
Do not check heating system operation by jumpering thermostat terminals at the
primary control, such as the gas valve, zone valve, or oil burner control. This will
damage the thermostat.
Move the system switch to HEAT and the fan switch to AUTO.
Press key until the setting is about 10° F [6° C] above room temperature. After a
short delay, heating should start and the fan should run (immediately if fan
operation switch is set in E position).
Press key until setting is about 10° F [6° C] below room temperature. The heating
equipment should shut off.
Cooling A,C B
For T8131 models only, before continuing check that the green LED is lit,
indicating the thermostat is powered properly.
To avoid possible compressor damage, do not operate the cooling system when
outside temperature is below 50° F [10° C]. See compressor manufacturer
instructions for further information.
NOTE: When cooling setting is changed, thermostat may delay up to five
minutes before turning on the air conditioner to protect the compressor.
Move the system switch to COOL and the fan switch to AUTO.
Press key until setting is about 10° F [6° C] below room temperature. The cooling
equipment and fan should start
Press key until the setting is about 10° F [6° C] above room temperature. The
cooling equipment and fan should stop.
Move the system switch to OFF with the fan switch remaining at AUTO. The
system and fan should be off.
Auto On
HeatCool Off
Warmer
Temp
Cooler
Temp
HeatCool Off
Auto On
Cooler
Warmer
Temp
Temp
HeatCool Off
Auto On