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Thread: Nest Wiring Guidances HP with LP Backup furnace

  1. #7
    Junior Member

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    Quote Originally Posted by Servicetech View Post
    I took some pictures of my control board, and it does show wires connected it section of the board labeled "OutDoors". So does that indicate that I have an outside thermostat, and if so who does that change my Nest configuration?

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  2. #8
    HVAC Thermostat Specialist

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    Looks like a DF control board to me.


  3. #9
    Junior Member

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    Quote Originally Posted by Servicetech View Post
    Looks like a DF control board to me.
    I talked to Nest Tech support today and they said for a Duel fuel setup I have the correct setup even with a DF control board. Their advice would be to set the Nest LC Temp lower then the what the DF is set too, and see how that works out.

  4. #10
    Junior Member

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    We have a Carrier Weathermaster 9200 DF system. I would like to use the Nest 2nd gen. What is your opinion on using it? I'm a complete novice to this so I need advice.

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