AUX HT
light (heat pump models
only)
-
This light glows whenever the
thermostat is
callina
for
ooera-
tion of the backup
fieater.’
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.
C$Klight
(heat pump models
Consult your heat pump equip-
ment literature to determine
whether this light is used and its
meaning.
Comfort temperature
The temperature you want when
you’re active and occupying the
building.
EM HT light
(beat
pump models
only)
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 pro-
grammed into your thermostat at
the factory. It sets a night pro-
gram that provides energy sav-
ings if you don’t set your own
program, or if your personal pro-
temperature. The thermostat
starts the recovery period early
so the house will be at the com-
foh;o;;ng
by the
time
you’ve
Setback
Reducing the temperature in the
house for a set period every day
in winter for energy savings. The
lower temperature is the energy
savings temperature.
Setup
Raising the temperature in the
house for a set period every day
in summer for energy savings.
The higher temperature is the
energy savings temperature.
Set
point
The thermostat temperature set-
ting you select. The thermostat
turns the heating or cooling
equipment on and off to maintain
this temperature at the
thermo-
day.
MIDDAY-The time period
when you can set back (win-
stat location until another
temperature setting (set point)
goes into effect.
SYSTEM light
This light glows whenever the
thermostat is calling for heating
or air conditioning.
Time period
One of four program periods:
MORNING, MIDDAY, EVENING,
and NIGHT; available with the
Chronotherm Ill thermostat. One
period begins when the previous
program period ends.
MORNING-The time period
when’you bring the building to
a comfortable temperature to
begin the day. This is the only
period that must contain a
time and temperature for every
gram is lost for any reason. The
program, which is the same for
all days of the week, is:
slan
TemperabJre
Period
Time
&¶Ii”g
CoDring
MORNING
co0
AM 70’F
78OF
M,DW,,
NO
p,,Jgmm
_____........
svss,no
. . . . . .
NO
program
NIGHT
10.00PM
60OF
78-F
Program
The times and temperatures you
set to define the comfort and
energy savings periods for each
day’s schedule.
Recovery
The time when the thermostat
operates the heating or air condi-
tioning equipment to return the
house from the energy savings
temperature to the comfort
31
ter) or up (summer) the
temperature for daytime
energy savings if.the building
is unoccupied.
EVENING-The time period
when you want the building at
a comfortable temperature for
evening activities after daytime
energy savings.
NIGHT-The time period
when you can set back (win-
ter) or up (summer) the
temperature for energy sav-
ings because family members
are asleep or the building is
unoccupied. Often a NIGHT
energy savings temperature is
set only for the heating sea-
son so family members can
sleep cool in summer.
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