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6
PARTS OF THE THERMOSTAT
The Back of The Thermostat Body
Turn the thermostat body over. On the back are
the 9 volt Energizer
®
alkaline battery and the
option switches.
1. The 9 volt Energizer
®
alkaline battery
provides power to the thermostat when
the 24 VAC power is interrupted (for ex-
ample, when you remove the thermostat
from the wall for programming). A fresh
battery will maintain the stored program
for approximately a week. If power loss is
long enough for the program to be lost,
the thermostat will automatically return to
the factory programmed temperatures
(64°F heating and 82°F cooling) when
power is restored. You must reprogram
the thermostat if this happens.
BACK OF THERMOSTAT BODY
Option switches 9-pin connector
4-pin connector
Battery