Thermostat Honeywell RTH series Operating Manual (alternate wiring) If labeled wire does not match any terminal designation, see diagram below.
View and Download Honeywell RTH quick installation manual online. Thermostat Honeywell RTH series Operating Manual Wires (alternate wiring) If labeled wire does not match any terminal designation, see diagram below.
I have a gas boiler with 2 wires to the thermostat. Typically if Honeywell does not have the manual on it its because it was It is a Honeywell RTHB. ES— RTH/RTH If any wires are not attached to your old thermostat or are attached to a terminal marked C or C1, they will not be connected.
If any wires are not attached to your old thermostat or are diagram below. .
RTH/RTH EF— About your new thermostat. WIRING.5 Wire Honeywell Thermostat Wiring.
Some programmable thermostats (e.g. Honeywell Prestige wiring requirements) need a minimum of 5 wires, and maybe more depending on what features you want to operate (humidifier, etc).
The additional 5th wire will be for common; providing stepped down power from a transformer. Photos related to Inspirationa Honeywell thermostat Thd Wiring Diagram (20 photos) Always remembers to look up the next photo album, which also includes the Honeywell Thermostat Thd Wiring Diagram New Honeywell Rthb Wiring 2 Wire Installation W2 Thermostat Diagram image showed above. Honeywell Day Thermostat Wiring Table: If the wire labels from your old thermostat hookup don't match the above, Honeywell offers additional advice that we adapt in table form provided in detail at HONEYWELL DAY PROGRAMMABLE THERMOSTAT - RTHB WIRING.
Again referring to the Honeywell thermostat ct31a wiring diagram, you can see it requires only two wires, R and W. It doesn't control cooling and, because it's a mechanical thermostat, it doesn't need power for internal functions, so it has no C wire.
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