21
68-0058—1
T8621A,C,D
PROGRAMMING THE THERMOSTAT
Program the EVENING time and tem-
perature, if desired.
Program the NIGHT time and tempera-
ture, if desired.
Set the cooling temperatures for all the
periods programmed.The program times
are the same for both heating and cool-
ing. Only the cooling temperatures need
to be programmed if programming has
been completed for heating. If you
change program times for cooling, you
are also changing the times for heating.
Press and release. The display shows
EVENING but no time or temperature.
Press and hold until the display
shows the time the temperature should
be at the comfort setting.
Press and hold until the display shows
the desired heating temperature.
Press and release. The display shows
NIGHT and the preprogrammed time
and temperature.
Press and hold until the display shows
the time to start the energy saving period.
Press and hold until the display shows
the desired heating temperature.
Press and release. The display shows
COOL, the preprogrammed cooling
temperature and the programmed start
time for NIGHT.
Press and hold until the display shows
the desired cooling temperature for
NIGHT.
If the display blinks while holding
down TEMPERATURE WARMER or
COOLER, the setting limit has been
reached. If thermostat can switch auto-
matically between heating and cooling,
the heating temperature must be at least
3 degrees F below the air conditioning
temperature. For example, if the heat-
ing setting is 72
°
F, the minimum cool-
ing set-ting is 75
°
F. To set the cooling
temperature lower, first lower the heat-
ing setting.
SET
PT
MON TUE WED THU FRI
HEAT
EVENING
PM
SET
PT
MON TUE WED THU FRI
HEAT
EVENING
PM
SET
PT
MON TUE WED THU FRI
HEAT
EVENING
PM
SET
PT
MON TUE WED THU FRI
HEAT
NIGHT
PM
SET
PT
MON TUE WED THU FRI
HEAT
NIGHT
PERIOD
AHEAD
BACK
WARMER
COOLER
PERIOD
AHEAD
BACK
WARMER
COOLER
SET
HEAT/COOL
WARMER
COOLER
PM
SET
PT
MON TUE WED THU FRI
HEAT
NIGHT
PM
SET
PT
MON TUE WED THU FRI
COOL
NIGHT
PM
SET
PT
MON TUE WED THU FRI
COOL
NIGHT
