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Location of thermostat low voltage.

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Belltfrank
Belltfrank Posts: 3
in Thermostats and Controls

How can you find the low voltage source to a thermostat that powers several  wall heaters. No central system just the thermostat and the heaters. I am thinking maybe the same transformer as the door bell but that works. 1982 home. I replaced the mercury thermostat but still not working.

Thanks Frank

Comments

  • EBEBRATT-Ed
    EBEBRATT-Ed Posts: 21,083

    If the thermostat is low voltage there is a transformer somewhere unless the equipment is a POWER PILE system where voltage is generated by the gas flame.

    Is it several wall heaters with one thermostat? If so, look in each heater. I assume that there is 120 volt in the heaters to run the fans.

    If the transformer is in the basement, then look (usually) around the breaker panels

  • HomerJSmith
    HomerJSmith Posts: 2,831

    What kind of heating sys do you have? Electric baseboards are different than hot water baseboards, etc.

    Belltfrank
  • bburd
    bburd Posts: 1,325

    Low-voltage HVAC control transformers are 24 V. Doorbells are 16 V. They are not interchangeable, and I've never seen one transformer used for both purposes.

    —
    Bburd

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