4

7.
Markplacementof mounting holes as appropriateand drill using a 3/16" drill bit.
8.
Gentlytap suppliedplastic anchors into the holesin the wall.
9.
Placethe thermostatrear body (mounting plate)against the wall in the desired location
makingsure themounting holes are aligned as appropriateand the thermostat wires
areproperlyinserting through opening in middleof rear body.
10.
Fastentherear body (mounting plate) to wall usingsupplied screws.
11.
Connectwiresto quick wiring terminal blockas appropriate using the new terminal
designations.Refer to Wiring Diagramsection of this manual if requiredfor assistance.
12.
Makesure all ofthe wire connections are secureand are not touching any other
terminalto preventelectrical shorts and potentialdamage to the thermostat.
13.
Attachfrontbody of thermostat to rear body of thermostatbeing careful to align the
terminalpinson the front body with the terminalblock on the rear body.
14.
Openfront thermostatdoor and open battery compartmentdoor.
15.
Installtwo new"AA" alkaline batteries into batterycompartment. Makesure to locate
thepositive(+) ends of the batteries and match themwith the positive (+) terminals
locatedin the batterycompartment.
16.
Closebattery compartment.
17.
Restoresystempower so you can test installation.
3.2 InstallingYour New Thermostat cont.

TESTI NG YOUR

NEW THE RMOSTAT

4
NOTE: Testyour thermostat prior to programming any user settings. Pressingthe
RESETbutton will erase any user entries for time of day, day of week, option settings
andprogramming if previously programmed. This will return all user settings and
returnthem to their default values. Remember,this will erase all programs entered by
theuser.
WARNIN G!
ReadB EFORE Testing
•Do not short (or jumper) across terminals on the gas valve or at the heating or
coolingsystem control board to test the thermostat installation. Thiscould damage
thethermostat and void the warranty.
•Do not select COOL mode of operation if the outside temperature is below 50˚ F
(10˚C). Thiscould possibly damage the controlled cooling system & may cause
personalinjury.
•This thermostat includes an automatic compressor protection feature to avoid
potentialdamage to the cooling system from short cycling.This thermostat
automaticallyprovides a 5-minute delay after turning off the cooling system output
toprotect the compressor.This protection is also present in the heat mode of
operationon single stage heat pump systems to protect the compressor.

INSTA LLATION

3cont.

5

TESTI NG YOUR

NEW THE RMOSTAT

4
1. Place the system switch in the HEATposition.
2. Press the buttonon the keypaduntil the setpoint temperaturesetting is a minimum of 3 degrees
higherthan thecurrent room temperature. The heating system shouldstart within several
seconds.Thefan may not turn on immediatelydue to the heating system built-infan delay.
3. Place the system switch in the OFFposition. Theheating systemshould stop within several
seconds.
4. Wait 5 minutes for the automaticcompressor short cycleprotection period to expire,or press the
RESETbuttonto bypass this feature for initialtesting purposes. PressingtheRESET button will
eraseany user entriesfor time of day,day of week, option settings& programming if previously
programmed.
5. Place the system switch in the COOLposition.
6. Press the buttonon the keypaduntil the setpoint temperatureis a minimum of 3 degrees lower
thanthe currentroom temperature.
7. The cooling system should startwithin several seconds. Place the system switch in the OFF
position.The cooling system shouldstop within 90 seconds (dependenton the setting of the
ResidualCoolingFan Feature).
8. Place the fan switch in the ON position. The system blowershould start.
9. Place the fan switch in the AUTO position. The system blowershould stop.
cont.

PROG RAMMIN G

5
5.1 DefaultThermostat Settings5.2 SettingCurrent Time of Day and Day of Week
1.
Whenin normaloperating mode, press DAY/TIMEkeypad button. LCD display will be
clearedexceptfor the time, am/pm indicatorand the day of the week. The hour portion of
thetime will flash.
NOTE: Itis important for you to set the current time of day (note AM/PM indicator in
display),and the current day of week correctly to avoid problems with program execution.
Function StatusAfter Reset
OperationMode NormalOperating Mode
TemperatureHold Permanentand Temporary Hold Cleared
Clock 12:00pm, Monday
RoomTemperature 70˚F (21.0˚ C), to be renewed within
5seconds
SetpointTemperature Accordingto system switch:
62˚F (17.0˚ C) for Heat,
EmergencyHeat and Off
85˚F (29.0˚ C) for Cool
TemperatureScale ˚For ˚C dependent on switch setting
OperatingProgram DAYprogram, Monday
LowBattery Warning Off, to be renewedwithin 5 seconds
ACInterrupted Warning Off,to be renewed within 5 seconds
FirstStage Differential 1˚ F (0.5˚ C)
SecondStage Differential 2˚F (1.0˚ C)
ResidualCooling 60Seconds
ShortCycle Protection Timer Reset
EfficientRecovery Mode Reset
OutputRelays Off