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Robertshaw RS9423T Thermostat Installation Guide
WIRING
Wiring Tips
Common Wire
Heat Pump Systems
(with No Aux. or
Emergency Heat)
The C (common wire) is optional
when the thermostat is powered
by batteries.
If wiring to a heat pump, use a
small piece of wire (not supplied) to
connect terminals E and W2 to turn
the thermostat into a single stage
control for emergency heat.
Wire Specifications
Use 18- to 22-gauge thermostat
wire. Shielded wire is not required.
Heat Pump Configuration
The thermostat can be optionally configured to operate a heat
pump. See Heat Pump configuration on page 21 of this manual for
configuration instructions.
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| General | Details |
|---|---|
| Name | Robertshaw RS9423T Thermostat Installation Guide |
| Make | Robertshaw |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.03 MB |

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