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-   -   Old furnace wiring (https://www.askmehelpdesk.com/showthread.php?t=425100)

  • Dec 14, 2009, 06:35 PM
    bracattack
    Old furnace wiring
    OK what I have is from the 50's, I have tested the blower (good) and tested the burner (also good) This unit must have had a 120v thermostat, which I don't have. I'm sure I can find one. Just want to get the wiring straight. This is my thought.
    Power in goes to the hi/lo blower control, then to the thermostat, and from there to the blower and the burner. Neutral in just joins the ones from the blower and burner.
    Thanks for the help.
  • Dec 14, 2009, 07:22 PM
    hvac1000
    What? Draw a diagram and post it.
  • Dec 14, 2009, 08:00 PM
    bracattack
    1 Attachment(s)

    OK here is the way I think it should be.
    Thanks for the help.
  • Dec 14, 2009, 09:12 PM
    hvac1000
    There has to be a limit control somehow located to shut off the burner in case the motor fails or you will have a terminal meltdown and associated fire which might burn down your house and kill you in your sleep. BUMMER better add one.

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