This thermostat is configured from the factory to energize the fan on a call for heat. If
your system is an electric heat or heat pump that REQUIRES the thermostat to turn on
the fan on a call for heat, place the fan option switch in the ELEC position. If your system
does not require the thermostat to energize the fan on a call for heat such as fossil fuel
(gas, oil, etc.), forced air system as well as hydraulic heating systems, place the fan
option switch in the GAS position.
The thermostat will operate from 2 size “AA” alkaline batteries or 24VAC power. When
operated from batteries, connection to the “C” (common) or (neutral) terminal is not
NOTE: When operated from batteries (No “C” terminal connection), the LCD display
backlight options are limited to option 1 (disabled) or option 2 (30 second illumination
after each button press).
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