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Glossary
AUX HT light
This light glows whenever the thermostat is calling for
operation of the backup heater. Backup (auxiliary) heat is
more expensive to operate than the heat pump and
typically is used only when the heat pump is unable to
handle the load.
Comfort temperature
The temperature you want when you’re active and
occupying the zone.
EM. HT. light
This light glows whenever the thermostat system
switch is in the EM.HT. position.
Energy-saving temperature
The lower (heating) or higher (cooling) temperature
that lets you save on heating and cooling costs when
you’re asleep or away. Also called the setback (heating)
or setup (cooling) temperature.
Preprogrammed schedule
This is the schedule programmed into your thermostat
at the factory. It sets a night program that provides
energy savings if you don’t set your own program, or if
your personal schedule is lost for any reason.
This program, which is the same for all days of the
week, is:
Start Temperature
Period Time Heating Cooling
MORNING 6:00 AM 70° F78° F
MIDDAY ———–——No program——–———
EVENING ————–—No program———–——
NIGHT 10:00 PM 60° F78° F
Program
The times and temperatures you set to define the
comfort and energy saving periods for each day’s
schedule.