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6
PROGRAMMING YOUR THERMOSTAT
play to match your old thermostat. This can be accomplished
(within a ±3° range) as follows:
1. Press PRGM and RUN buttons at the same time.
2. Press
or
to adjust the displayed temperature to
your desired setting.
3. Press RUN to resume normal program operation.
•
Display Backlight — (Not available on earlier models.) The
display backlight improves display contrast in low lighting
conditions. Selecting backlight ON will turn the light on for
a short period of time after any button is pressed. Selecting
backlight OFF (default) will keep the light off. Turn the dis-
play backlight feature ON as follows:
1. Press TIME and RUN buttons at the same time. The display
will show
“d-L” and “OFF” alternately.
2. Press
or
to change
“OFF” to “ON”
This section will help you plan your thermostat’s program to meet
your needs. For maximum comfort and efficiency, keep the follow-
ing guidelines in mind when planning your program.
• When heating (cooling) your building, program the tempera
-
tures to be cooler (warmer) when the building is vacant or dur-
ing periods of low activity.
• During early morning hours, the need for cooling is usually
minimal.
Look at the factory preprogrammed times and temperatures shown
below. If this program will suit your needs, simply press the RUN
button to begin running the factory preset program.
If you want to change the preprogrammed times and temperatures,
follow these steps.
Determine the time periods and temperatures for your weekday
and weekend programs. You must program four periods for both the
weekday and weekend program. However, you may use the same
heating and cooling temperatures for consecutive time periods. You
can choose start times, heating temperatures, and cooling tem-
peratures independently for both weekday and weekend programs
(for example, you may select 5:00 AM and 70° as the weekday
1st
period heating start time and temperature, and also choose 7:00
AM and 76° as the weekday
1st period cooling start time and
temperature). Use the table at the bottom of the page to plan your
program time periods and the temperatures you want during each
period. You may also want to look at the sample program table to
get an idea of how the thermostat can be programmed.
1ST
2ND
3RD
4TH
1ST
2ND
3RD
4TH
SAMPLE
Heating/Cooling Schedule Plan (Factory Program)
6:00 AM
8:00 AM
5:00 PM
10:00 PM
6:00 AM
8:00 AM
5:00 PM
10:00 PM
6:00 AM
8:00 AM
5:00 PM
10:00 PM
6:00 AM
8:00 AM
5:00 PM
10:00 PM
70 F
62 F
70 F
62 F
78 F
85 F
78 F
82 F
70 F
62 F
70 F
62 F
78 F
85 F
78 F
82 F
WEEKDAY (5 DAY)
WEEKEND (2 DAY)
Start
Time
Temperature
Start
Time
Temperature
Period
COOL
HEA
T
Entering Your Program
Follow these steps to enter the heating and cooling programs you
have selected.
Set Current Time and Day
1. Press TIME button once. The display will show the hour only.
EXAMPLE:
PM
2. Press and hold either
or
until you reach the correct
hour and AM/PM designation (
AM begins at midnight; PM be-
gins at noon).
3. Press TIME once. The display window will show the minutes
only.
EXAMPLE:
4. Press and hold either
or
until you reach the correct
minutes.
5. Press TIME once. The display will show the day of the week.
6. Press
or
until you reach the current day of the week.
7. Press RUN once. The display will show the correct time and
room temperature alternately.
Enter Heating Program
1. Move the SYSTEM switch to
HEAT.
2. Press PRGM once. “A” (indicating weekday program) will appear
in the display. Also displayed are the currently programmed start
time for the
1st heating period and the currently programmed
temperature (flashing).
EXAMPLE:
AM
MO TU WE TH FR
This display window shows that for the 1st weekday period, the
start time is 6:00 AM, and 70° is the programmed temperature
(this example reflects factory preprogramming).
3. Press
or
to change the displayed temperature to your
selected temperature for the 1st heating program period.
4. Press TIME once (the programmed time will flash). Press
or
until your selected time appears. The time will change
in 15 minute increments. When your selected time is displayed,
press TIME again to return to the change temperature mode.
5. Press PRGM once. The currently programmed start time and
setpoint temperature for the
2nd heating program period will
appear.
WEEKDAY (5 DAY)
WEEKEND (2 DAY)
Start
Time
Temperature
Start
Time
Temperature
Heating/Cooling Schedule Plan
Period
COOL
1ST
2ND
3RD
4TH
1ST
2ND
3RD
4TH
COOL
HEA
T
