FEATURES
SPECIFICATIONS
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• Contemporary styling with large display
• 7 Day Programming Flexibility
• AC Powered with Battery Back-up (2 AA Alkaline batteries included)
• Relay Outputs for Maximum Compatibility
• Easy Access Front Battery Door
• Pre-programmed for quick installation
• Meets Title 24 and Energy Star
(Energy Saving Guidelines)
• Vacation "HOLD" Mode
• Compressor Short Cycle Protection
• Adjustable 1st & 2nd Stage Temperature Differentials
• Residual Cooling Fan Delay
• Efficient Recovery Mode (ERM™)
• Low battery Indication
• Multi-colored LED Status Indicators
• Quick Wiring Terminal Block
• High Temperature Safety Switch
INSTALLATION
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3.1
Replacing Existing Thermostat
1.
Always turn off power to the air conditioning or heating system prior to removing existing
thermostat.
2.
Remove the cover of your old thermostat and locate the wire terminals. Do not remove
wires from terminals yet.
3.
Using small pieces of masking tape label wires prior to removal from terminals. Use the
chart below to determine the new terminal designations for your new thermostat.
• Electrical Rating: 24 Volt AC (18-30 Volt AC)
2 amp maximum load per terminal
4 amp total maximum load (all terminals)
• Control Range: 45˚ - 90˚ F (7˚ - 32˚ C)
• Accuracy: +/- 1˚ F (+/- .5˚ C)
• AC Power: 18-30 Volt AC
• DC Back-Up Power: 3.0 Volt DC (2 AA Alkaline batteries included)
• Compatibility: Multi-stage heat pump systems
with up to two stages of heating and two stages
of cooling.
• Terminations: R, Y1, Y2, W2, E, G, O, B, L, C
Old Terminal from New Terminal for
Existing Thermostat New Thermostat Terminal Description
R, V-VR or VR-R R 24 Volt AC
Y, Y1 or M Y1 Stage 1 Cooling or Heating
Y2 Y2 Stage 2 Cooling
W1, W2 or W-U W2 Stage 2 Heating
E E Emergency Heating
G or F G Fan Control
O or R O Reversing Valve (Cooling)
B B Reversing Valve (Heating)
L or X L System Status LED
C, X or B C 24 Volt AC, Transformer Common
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INSTALLATION
3
3.1
Replacing Existing Thermostat cont.
4.
After labeling and removing all wires from terminals, unscrew the existing thermostat
mounting base from wall. Make sure to secure wires to prevent them from slipping
back into the hole in the wall.
NOTE: This thermostat is for use on low voltage 24 Volt AC multi-stage heat pump
systems with up to two stages of heating and two sta ges of cooling and requires a
transformer common wire for proper installation. This thermostat is not for use on
single stage heating or cooling systems.
Illustration of round and rectangular
mechanical thermostat exploded
views.
3.2
Installing Your New Thermostat
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 OFF position.
3.
Place fan control switch on front of thermostat to AUTO position.
4.
Remove front of thermostat body from rear body by pressing release latch on bottom of
front body.
5.
Place the thermostat rear body (mounting plate) against wall in the desired thermostat
location.
6.
Guide thermostat wires through center hole in rear body. Continue to hold rear body
against wall.
cont.
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