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question about upgrading Smith Gates Thermostat

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AndreGagomatz
AndreGagomatz Member Posts: 1
in Thermostats and Controls
I have in floor heat controlled by a 10+ year old Smith Gates thermostat and want to upgrade to something with a timer, even better something with a wifi option. the old one has what I assume is a thermocouple (single thick bare copper lead embedded in the body of the thermostat that I assume goes down the wall and ends up embedded in the tile floor somewhere. The only other wires are the 240v power leads. Can anyone suggest what my options are please?

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  • lotuselectric
    lotuselectric Member Posts: 1

    I have the same Smith Gates Thermostat and I am also wondering if there is something out there that replaces this the most with WiFi capabilities?

  • ratio
    ratio Member Posts: 4,122
    edited September 15

    How 'bout a pic or two, including one with the cover removed?

    I just found this at supplyhouse.com: https://www.supplyhouse.com/Mysa-MYSA-IN-FLOOR-V1-0-Mysa-Smart-Thermostat-for-Electric-In-Floor-Heating.

    No experience with it.

  • Jamie Hall
    Jamie Hall Member Posts: 26,392

    Can yo provide the model number of that thermostat? I can't be sure, but from the description it sounds as though you have in-floor electric radiant heat, and the thermostat is turning that on and off — though it is possible that the thermostat is actually modulating the power to the floor elements, based on temperature.

    That lead going somewhere into the floor may not be a thermocouple lead. It may also be a capillary tube, with a switch in the thermostat itself.

    But all that said, we need the exact model number of the thermostat…

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England

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