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    FRANK55's Avatar
    FRANK55 Posts: 4, Reputation: 1
    New Member
     
    #1

    Dec 27, 2011, 12:55 PM
    Connecting a generator to my heating furnace?
    Help!. I am completely confused on why my portable generator will not start my furnace! When I connect the wiring I have power to the furnace but it will not start.
    I have tried everything and could use some help please.
    Here is what I have... a single black and white wire (from the main power supply) that connect to a black and white wire from the furnace. There is also a yellow wire that connects to the white wire from the furnace. This yellow wire goes to the combustion blower... that's it. The power line coming from my generator has a three prong wire. Not sure why there is not a ground wire going that connects any of the wires between the house current and the furnace... just the 3 furnace wires and 2 main power supply wires. Again, when I start the generator, I do have ample power
    At the furnace, it just won't start. Any help would be much appreciated!
    Thanks,
    Frank
    smoothy's Avatar
    smoothy Posts: 25,492, Reputation: 2853
    Uber Member
     
    #2

    Dec 27, 2011, 12:58 PM
    Where is your thermostat drawing power from?
    FRANK55's Avatar
    FRANK55 Posts: 4, Reputation: 1
    New Member
     
    #3

    Dec 27, 2011, 12:59 PM
    Problems connecting my furnace to a generator.. HELP
    Help!. I am completely confused on why my portable generator will not start my furnace! When I connect the wiring I have power to the furnace but it will not start.
    I have tried everything and could use some help please.
    Here is what I have... a single black and white wire (from the main power supply) that connect to a black and white wire from the furnace. There is also a yellow wire that connects to the white wire from the furnace. This yellow wire goes to the combustion blower... that's it. The power line coming from my generator has a three prong wire. Not sure why there is not a ground wire going that connects any of the wires between the house current and the furnace... just the 3 furnace wires and 2 main power supply wires. Again, when I start the generator, I do have ample power
    At the furnace, it just won't start. Any help would be much appreciated!
    Thanks,
    Frank
    Fr_Chuck's Avatar
    Fr_Chuck Posts: 81,301, Reputation: 7692
    Expert
     
    #4

    Dec 27, 2011, 01:08 PM
    What type of furnace do you have, gas, using the electric only to do the auto light and the blowers) or a electric furnace?

    If all electric, how many watt is it, and have you considered the need for starting watts to get motor turned on.

    How large is your generator?
    FRANK55's Avatar
    FRANK55 Posts: 4, Reputation: 1
    New Member
     
    #5

    Dec 27, 2011, 01:15 PM
    I have a gas furnace with electric starter (no pilot light)
    The generator rate 3250 watts.
    FRANK55's Avatar
    FRANK55 Posts: 4, Reputation: 1
    New Member
     
    #6

    Dec 27, 2011, 01:23 PM
    Where is your thermostat drawing power from furnace with battery back-up

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