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cooling set points. Pressing the UP ARROW or DOWN
ARROW buttons in Heating mode will adjust only the heating
set points. The UP ARROW and DOWN ARROW buttons are
also used in Programming mode.
OVERRIDE BUTTON — The Override button is used to
force the thermostat from Unoccupied mode into the Occu-
pied 1 mode comfort settings. The Override period will be set
at 30 minutes. The thermostat will then return to Unoccupied
mode. To increase the amount of time in Override mode, press
the Override button again. Thirty minutes of override time will
be added for each time the Override button is pressed up to a
maximum of 4 hours. After the 4-hour limit has been reached,
press the Override button again to cancel Override mode.
While in Override mode, the Override icon and the Occu-
pied 1 icon will be displayed on the thermostat. The time of
day and the minutes remaining in Override mode will alternate
on the thermostat display.
The set points are adjustable with the UP ARROW and
DOWN ARROW keys during Override mode.
NOTE: If the thermostat is in Occupied mode and the Override
button is pressed, the thermostat will go into Unoccupied mode
immediately. The thermostat will remain in Unoccupied mode
until the next Occupied start time.
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, your daily schedule is
enabled and the thermostat will 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
and DOWN ARROW buttons 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 and DOWN ARROW buttons 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 when ever 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 and DOWN ARROW buttons to set
the maximum number of Occupied periods for each
day. The thermostat can be set to 1, 2, or 3. After the
number of Occupied periods has been selected, press
the Mode button. See Fig. 3.
BACKLIT
LCD DISPLAY
HEAT OR COOL
INDICATOR
(RED=HEAT,
GREEN=COOL)
TEMPERATURE
SENSOR
MODE
BUTTON
OVERRIDE
BUTTON
UP AND DOWN
BUTTONS
Fig. 2 — Thermostat Front Panel
Fig. 3 — Setting Occupied 1 Set Points