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2
INSTALLATION
cont.
Replacing Existing Thermostat
2.1
cont.
4. After labeling and removing all wires from terminals, unscrew the existing thermostat
sub-base from wall. Make sure to secure wires to prevent them from slipping back
into the hole in the wall.
NOTE:
This thermostat is designed for use on low voltage 24 Volt AC multi-stage
heat pump systems with up to two stages of cooling and requires a transformer
common wire for proper installation. This thermostat is not for use on single stage
heating or cooling systems.
Installing Your New Thermostat
2.2
NOTE:
If you are installing this thermostat in a new installation be sure to locate
the thermostat 4 to 5 feet above the floor in accordance with applicable building
codes. Make sure to install the thermostat in a location that provides good airflow
characteristics and avoid areas behind doors, near corners, air vents, direct sunlight
or near any heat generating device. Installation in any of these areas could impact
thermostat performance.
1. Always turn off power to the air conditioning or heating system prior to installing your
new thermostat.
2. Place system switch on front of thermostat to the OFF position.
3. Place fan control switch on front of thermostat to the AUTO position.
4. Remove front of thermostat body from sub-base by pressing release latch on bottom of
front body.
5. Place the thermostat sub-base against wall in the desired thermostat location.
6. Guide thermostat wires through center hole in sub-base. Continue to hold sub-base
against wall.
7. Mark placement of mounting holes as appropriate and drill using a 3/16" drill bit.
8. Gently tap supplied plastic anchors into the holes in the wall.
9. Place the thermostat sub-base against the wall in the desired location, making sure
the mounting holes are aligned as appropriate and the thermostat wires are properly
inserting through opening in middle of sub-base.
10. Fasten the sub-base to wall using supplied screws.
11. Connect wires to quick wiring terminal block as appropriate using the new terminal
designations. Refer to Wiring Diagram section of this manual if required for assistance.
12. Make sure all of the wire connections are secure and are not touching any other
terminal to prevent electrical shorts and potential damage to the thermostat.
13. Locate the auxiliary heat option switch, AE-AG, on the circuit board.
For electric auxiliary heat units the switch should be set to the AE position.
For units with gas or oil auxiliary heat, move the switch to the AG position. This
will lock out the compressor stage 1 minute after a second stage heat call for
maximum efficiency.
14. Locate the internal ˚F / ˚C switch on the circuit board. Using your finger, gently flip
the switch toward the preferred temperature ˚F / ˚C scale.
15. Locate the internal programming switch on the circuit board. This switch configures
the programming mode, either 5-2 DAY (weekday-weekend), or full 7 DAY
programming. Using your finger, gently flip the switch towards the programming
option which best suits your schedule.
16. Attach front body of thermostat to sub-base of thermostat being careful to align the
terminal pins on the front body with the terminal block on the sub-base.
2
INSTALLATION
cont.
17. Open front thermostat door and open battery compartment door.
18. Install two new "AA" alkaline batteries into battery compartment. Make sure to locate
the positive (+) ends of the batteries and match them with the positive (+)
terminals located in the battery compartment.
19. Close battery compartment.
20. Restore system power so you can test installation.
TESTING YOUR
3
NEW THERMOSTAT
WARNING!
Read BEFORE Testing
• Do not short (or jumper) across terminals on the gas valve or at the heating or
cooling system control board to test the thermostat installation. This could damage
the thermostat and void the warranty.
• Do not select the COOL mode of operation if the outside temperature is below
50˚ F (10˚ C). This could possibly damage the controlled cooling system and may
cause personal injury.
• This thermostat includes an automatic compressor protection feature to avoid
potential damage to the cooling system from short cycling. This thermostat
automatically provides a 5-minute delay after turning off the cooling or heating
output to protect the compressor.
NOTE:
Test your thermostat prior to programming any user settings. Pressing the
RESET button will erase any user entries for time of day, day of week, option settings
and programming if previously programmed. This will return all user settings and
return them to their default values. Remember, this will erase all programs entered by
the user.
1. Place the system switch in the HEAT position.
2. Press the button on the keypad until the setpoint temperature setting is a minimum of 3
degrees higher than the current room temperature. The heating system should start within
several seconds. The fan may not turn on immediately due to the heating system built-in
fan delay.
3. Place the system switch in the OFF position. The heating system should stop within several
seconds. You must wait 5 minutes for the automatic compressor short cycle protection period
to expire, or press the RESET button to bypass this feature for initial testing purposes. Pressing
the RESET button will erase any user entries for time of day, day of week, option settings and
programming if previously programmed.
4. Place the system switch in the COOL position.
5. Press the button on the keypad until the setpoint temperature is a minimum of 3 degrees
lower than the current room temperature.
6. The cooling system should start within several seconds. Place the system switch in the OFF
position. The cooling system should stop within 90 seconds (dependent on the setting of the
Residual Cooling Fan Feature).
7. Place the fan switch in the ON position. The system blower should start.
8. Place the fan switch in the AUTO position. The system blower should stop.
Page 2, 3
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