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Cooling System
1. Move SYSTEM switch to COOL position.
2. Press to adjust thermostat setting below room
temperature. The blower should come on immediately on
high speed, followed by cold air circulation. However, if the
setpoint temperature is fl ashing, the compressor lockout
feature is operating (see Confi guration menu, item 6).
To prevent compressor and/or property damage, if the
outdoor temperature is below 50
o
F, DO NOT operate
the cooling system.
CAUTION
!
Do not allow the compressor to run unless the
compressor oil heaters have been operational for 6
hours and the system has not been operational for at
least 5 minutes.
CAUTION
!
6) Select Compressor Lockout CL OFF or ON - Selecting
CL On will cause the thermostat to wait 5 minutes between
cooling cycles. This is intended to help protect the
compressor from short cycling. Some newer compressors
already have a time delay built in and do not require this
feature. Your compressor manufacturer can tell you if the
lockout feature is already present in their system. When the
thermostat compressor time delay occurs, it will fl ash the
setpoint for up to fi ve minutes.
7) Select Backlight Display - The display backlight improves
display contrast in low lighting conditions. When the “C”
terminal is connected, selecting backlight CdL On will keep
the light on continuously. Select backlight OFF will turn the
light on momentarily when any key is pressed. When the
“C” terminal is not connected, regardless of the backlight
selection, the light will be on momentarily when any key is
pressed.
INSTALLER/CONFIGURATION MENU
8) Select Temperature Display Adjustment 4 LO to 4 HI -
Allows you to adjust the room temperature display up to 4°
higher or lower. Your thermostat was accurately calibrated
at the factory but you have the option to change the display
temperature to match your previous thermostat. The
current or adjusted room temperature will be displayed on
the display.
9) Select F° or C° Readout - Changes the display readout to
Celsius or Fahrenheit as required.
10) Select Filter Replacement Reminder and Set Run Time
Select the “Change Filter” reminder On or OFF. If selected
On, press RUN/HOLD to select the time period from 25 to
1975 hours in 25 hour increments. In a typical application,
200 hours (default) of run time is approximately 30 days.
After the selected time of blower operation, the thermostat
will display “Change Filter” as a reminder to change or
clean your air fi lter. When “Change Filter” is displayed,
press the RUN/HOLD button to clear the display and restart
the time to the next fi lter change. A selection of OFF will
cancel this feature.
OPERATION
CHECK THERMOSTAT OPERATION
If at any time during testing your system does not operate
properly, contact a qualifi ed service person.
Turn on power to the system.
Fan Operation
If your system does not have a G terminal connection, skip to
Heating System.
1. Move fan switch to ON position. The blower should begin to
operate.
2. Move fan switch to AUTO position. The blower should stop
immediately.
Heating System
1. Move SYSTEM switch to HEAT position. If the auxiliary
heating system has a standing pilot, be sure to light it.
2. Press
to adjust thermostat setting to 1° above room
temperature. The system should begin to operate.
3. Press
to adjust temperature setting below room
temperature. The heating system should stop operating.
MANUAL OPERATION
• HOLD TEMPERATURE — With the SYSTEM switch set
to HEAT or COOL, momentarily press RUN/HOLD button.
HOLD will be displayed. Use or to adjust the
temperature. The thermostat will hold the room temperature
at the selected setting until you press RUN/HOLD button to
start program operation again.
• TEMPERATURE OVERRIDE (TEMPORARY HOLD) —
Press
or until the temperature you want is displayed.
The thermostat will override current programming and
keep the room temperature at the selected temperature for
2 hours or until the next program period begins. Then the
thermostat will automatically revert to the program.
3. Press
to adjust temperature setting above room
temperature. The cooling system should stop operating.