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    kavanaugh koch's Avatar
    kavanaugh koch Posts: 5, Reputation: 1
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    #1

    Jan 16, 2006, 08:25 AM
    Thermostat for wall furnace?
    I have a ten year old (propane) gravity wall furnace that came with it's own wall mounted thermostat, which is a Honeywell "Millivolt". I am now relocating the thermostat, because of a small remodeling, and want to replace the thermostat with a more up to date (looking) thermostat. Can I just go to a home improvement store and get a "universal" replacement thermostat? What do I need to know? Thanks,

    Kavanaugh
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #2

    Jan 16, 2006, 10:30 AM
    What does the old thermostat have running between it and the furnace? If it is a pair of small wires, they can easily be extended to any mechanical thermostat and connected to the R and W terminals. Likely none of the newer, digital will work without a transformer. If it is more like a thin copper tube, it is a special thermostat and ordinary ones will not work in place of it. I don't know if any modern one is available to replace it.
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