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MODE BUTTON — The Mode button selects the operating
mode of the thermostat.
• If OFF is selected, the thermostat will not enter Heating
or Cooling mode.
• If HEAT is selected, the thermostat will only enter Heat-
ing mode (if the room temperature is below the heating
set point). The thermostat will not provide cooling.
• If COOL is selected, the thermostat will only enter Cool-
ing mode (if the room temperature is above the cooling
set point). The thermostat will not provide heating.
• If AUTO is selected, the thermostat will enter Heating or
Cooling mode based on the room temperature and the
heating and cooling set points. The thermostat will pro-
vide automatic changeover from Heating to Cooling
mode and Cooling to Heating mode when required. The
thermostat will automatically switch to maintain the
desired temperature setting. The thermostat does not
need to be manually changed from heating or cooling or
cooling to heating operation.
• If PROGRAM ON is selected, the thermostat will oper-
ate as in the AUTO mode (see above). PROGRAM ON
enables the thermostat to follow the programmed daily
schedule stored in its memory.
Keypad Lock — To prevent unauthorized use of the ther-
mostat, the front panel buttons can be disabled. To disable or
lock the keypad, press and hold the Mode button. While hold-
ing down the Mode button, press the UP and DOWN ARROW
buttons simultaneously. The “Locked” icon will appear on the
display.
The thermostat is unlocked by performing the same proce-
dure. Press and hold the Mode button. While holding down the
Mode button, Press the UP and DOWN ARROW buttons
simultaneously. The “Locked” icon will be removed from the
display.
Set Clock — The Set Clock function allows the user to
change the time and day displayed on the thermostat. Press and
hold the Mode and Override buttons at the same time until the
display changes. The display will show the setup annunciator.
The current time will blink on and off. Press the UP ARROW
or DOWN ARROW button until the correct time is shown.
Hold down the buttons to quickly move through the time dis-
play. The AM and PM annunciators will automatically change.
To scroll through by hours instead of minutes, hold down the
Override button while pressing UP ARROW or DOWN AR-
ROW. To ensure the schedules are properly followed, make
sure that AM or PM is correct for the time chosen. When the
correct time is shown, press the Mode button to modify the day
of the week. The current day will blink on and off. Press the UP
ARROW or DOWN ARROW button until the correct day is
shown. Press and hold the Mode and Override buttons at the
same time again to exit the Set Clock mode.
Program Thermostat Schedules — Before pro-
gramming the thermostat, plan the thermostat daily schedule.
The schedule is divided into 7 days (Monday through Sunday).
Each day has from 2 to 4 time periods (Occupied 1, Occu-
pied 2, Occupied 3, Unoccupied) depending on the configura-
tion of the thermostat. Each occupied time period has a start
time, stop time, heating set point, and cooling set point. The un-
occupied time period has a heating set point and a cooling set
point. The unoccupied time period is active whenever an occu-
pied time period is not active. Fill in Table 1 as an aid to pro-
gramming the daily schedules.
PROGRAMMING MODE — To program the daily sched-
ules, perform the following procedure:
1. Enter Programming mode by pressing and holding the
Mode and UP ARROW buttons. The Occupied 1
annunciator will appear on the thermostat display. Use
the UP ARROW or DOWN ARROW button to set the
maximum number of Occupied periods for each day.
The thermostat can be set to 1, 2, or 3. After the num-
ber of Occupied periods has been selected, press the
Mode button. See Fig. 3.
2. The cooling set point for Occupied 1 will be displayed.
Use the UP ARROW or DOWN ARROW button to raise
or lower the cooling set point until the desired temperature
is shown. The range of acceptable values is 35 to 99 F
(1 to 37 C). Press the Mode button to continue. See Fig. 3.
3. The heating set point for Occupied 1 will be displayed.
Use the UP ARROW or DOWN ARROW button to raise
or lower the heating set point until the desired temperature
is shown. The range of acceptable values is 35 to 99 F
(1 to 37 C). Press the Mode button to continue. See Fig. 3.
4. The cooling set point for Unoccupied will be displayed.
Use the UP ARROW or DOWN ARROW button to raise
or lower the cooling set point until the desired tempera-
ture is shown. The range of acceptable values is 35 to
99 F (1 to 37 C) or ‘‘OF’’ (no unoccupied cooling). To
configure the Unoccupied Cooling set point to OF, press
the UP ARROW button until 99 F is displayed. Press the
UP ARROW button again to display OF. Press the Mode
button to continue.
5. The heating set point for Unoccupied will be displayed.
Use the UP ARROW or DOWN ARROW button to raise
or lower the heating set point until the desired tempera-
ture is shown. The range of acceptable values is 35 to
99 F (1 to 37 C) or ‘‘OF’’ (no unoccupied heating). To
BACKLIT
LCD DISPLAY
HEAT OR COOL
INDICATOR
(RED=HEAT,
GREEN=COOL)
TEMPERATURE
SENSOR
MODE
BUTTON
OVERRIDE
BUTTON
UPAND DOWN
BUTTONS
Fig. 2 — Thermostat Front Panel
Fig. 3 — Setting Occupied 1 Set Points
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