Installation
Power & Reset options
The thermostat is dual power.. It can either be AC or battery powered, or both (to provide backup power for the clock). Batteries are optional if your thermostat was wired to run on AC power when installed..
RESET |
BUTTON |
Installation
CONVENTIONAL HEAT/COOL WIRING DIAGRAMS
Single transformer (use Jumper wire) | Two transformers (Remove Jumper Wire) | ||||||||
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For heat pump systems the C terminal must be connected to the common of the 24VAC transformer in order for the system fault and emergency heat indicators to operate..
The thermostat has a memory backup that saves the thermostat settings in case of a power interruption.. The system settings will be retained but the clock will reset after 90 seconds with no battery or AC power..
The reset button located under the battery cover can be used to reset the thermostat to factory defaults.. The system settings will also be reset to default..
NOT USED
COOLING | COOLING | FAN | |||
1st | 2nd |
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JUMPERTRANSFORMER
2nd HEATING 1st HEATING
OUTDOOR TEMP SENSOR | REMOTE TEMP SENSOR |
NOT USED
NOT USED
COOLING | COOLING | FAN | |||
1st | 2nd |
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COOLING TRANSFORMER
TRANSFORMER
HEATING
2nd HEATING 1st HEATING
OUTDOOR TEMP SENSOR | REMOTE TEMP SENSOR |
NOT USED
Note: The reset button is disabled when the thermostat is removed from the wall for programming..
I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2 | I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2 |
Wiring terminal
I1 & I2 – Indoor Air Quality control output
HEAT PUMP WIRING DIAGRAMS
Single transformer (use Jumper wire)
Two transformers (Remove Jumper Wire)
Wire specifications:
Installation notes:
• Ensure power at the HVAC equipment is off. |
• Loosen screw terminals, insert stripped wire and |
C – Common (optional when powered by batteries) O/B – Reversing valve
Y – 1st stage cooling / compressor
Y2 – 2nd stage cooling / compressor G – Fan
RC – 24VAC supply cooling1 R – 24VAC supply heating1
W2 – 2nd stage heat / auxiliary
W – 1st stage heat / auxiliary
L – System fault indicator (optional) (heat pump only) S1 & S2 – outdoor temperature sensor (included)
T1 & T2 – remote temperature sensor (optional)
REVERSING VALVE 1st COMPRESSOR 2nd COMPRESSOR FAN
JUMPERTRANSFORMERHEAT PUMP
2nd AUX HEATING 1st AUX HEATING FAULT DETECT
OUTDOOR TEMP SENSOR | REMOTE TEMP SENSOR | |
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REVERSING VALVE
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COMPRESSOR | COMPRESSOR | FAN |
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1st | 2nd |
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| HEATING TRANSFORMER |
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| HEAT PUMP TRANSFORMER |
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| 2nd AUX HEATING | 1st AUX HEATING | FAULT DETECT | ||||
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OUTDOOR TEMP SENSOR | REMOTE TEMP SENSOR | |
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• Push the excess wire back into the opening and plug |
the wall opening to prevent drafts.. |
1Jumper between RC & R is used in single transformer systems (see wiring diagrams).
I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2 | I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2 |
4 | 5 |
