WIRING DIAGRAMS
Heat Pump Connections
If you do not have a heat pump system, refer to figures
You can configure the thermostat for use with the following heat pump systems.
HEAT PUMP TYPE 1 (HP 1). Single stage compressor system; gas or electric backup.
HEAT PUMP TYPE 2 (HP 2).
After wiring, see INSTALLER CONFIGURATION section for proper thermostat configuration.
Figure 3 – Heat Pump Systems
JumperJumper
| L | O/B | Y | Y2 | W/E | W2 | G | RH | RC | C |
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| O |
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| Heat Mode | Blower/ |
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| not provide an E connection, | |||
Heat Pump 1 |
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| No |
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| 2nd Stage. |
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| jumper W2 to W/E to use | ||||||
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| Energized in |
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| Emergency | Circulator |
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| the Auxiliary Heat in the | ||||||
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(HP1) | Fault Indicator | Cool Mode | Heat and |
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| Mode 2nd | Fan Energized |
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| Optional* | |||||||||
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| Emergency | 24 Volt | 24 Volt | Emergency Mode. | |||||||||||||||
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| Cool Mode |
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| Stage | on Call for | 24 Volt |
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| Malfunction | B | 1st Stage |
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| Mode |
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| Heat or Cool. | (Hot) | (Hot) | (Com- |
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| Heat Mode | * Common connection | |||||||||||||||||
| Switch | Energized in | (Compressor) | 2nd | 1st Stage | Set Elect/Gas | Heat | Cool | mon) | ||||||||||||
Heat Pump 2 |
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| Heat, Off, |
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| 3rd Stage. | Option for |
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| required for fault or | ||||
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| Emergency |
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(HP2) |
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| Emergency |
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| Emergency |
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| malfunction indication. | |||||
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| pressor) |
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| Mode 2nd | Mode |
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Comfort Alert II Module | NEUTRAL |
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or Similar System |
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Malfunction Module | 24VAC | 120VAC |
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| CLASS II |
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| TRANSFORMER |
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Single Stage and Multi-Stage Connections
Refer to equipment manufacturers’ instructions for specific system wiring information.
This thermostat is designed to operate a
You can configure the thermostat for use with the following fossil fuel systems:
Single stage (SS 1) gas, oil or electric.
After wiring, see INSTALLER CONFIGURATION section for proper thermostat configuration.
Figure 4 – Single Stage or Multi-Stage System (No Heat Pump) with Single Transformer
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L | O/B | Y | Y2 W/E | W2 | G | RH RC | C |
System
Single
Stage 1
(SS1)
Multi-
Stage 2
(MS2)
Fault
Indicator
or
System
Malfunction
Switch
O
Energized Constantly
in Cool Mode
B
Energized Constantly
in Heat, Off,
Emergency
Mode
Cool Mode
1st Stage
No |
| Blower/ |
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No Output | Circulator |
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Output |
| Fan Energized |
| 24 Volt | |
| Heat |
| on Call for | 24 Volt | |
| Mode |
| Cool (and | (Hot) | (Hot) |
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Cool 1st Stage | Heat Mode | Heat if | Heat | Cool | |
Mode | 2nd Stage | configured |
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2nd |
| for Electric |
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Stage |
| Heat) |
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Optional*
24Volt (Com- mon)
*Common connection required for fault or
malfunction indication.
System Malfunction Module
NEUTRAL
24VAC
HOT
120VAC
CLASS II
TRANSFORMER
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