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Hydronic Boiler Temperature Adjustment?

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rmodany
rmodany Member Posts: 2
in Radiant Heating

I have a Weil McClain boiler and cannot figure out how to adjust the water temperature setting. I do not see any types of knobs, levers, switches, etc inside the cabinet.

I don’t have any information on it. I went on the WM website but can’t pull up any information with their search tool. Do I don’t know how old it is, but guessing 1980’s or 1990’s

Comments

  • pecmsg
    pecmsg Member Posts: 7,064

    A model # would help.

  • Jamie Hall
    Jamie Hall Member Posts: 27,367

    Probably isn't much of anything on the boiler itself, except possibly an aquastat inserted into the side of the boiler somewhere. There may be an aquastat on one of the connected pipes instead.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • rmodany
    rmodany Member Posts: 2

    Here’s the boiler tags:

    IMG_1650.jpeg IMG_1649.jpeg
  • leaking
    leaking Member Posts: 153

    Complete photos would help

  • GroundUp
    GroundUp Member Posts: 2,513

    There is an aquastat inside the boiler. Pull the front cover off and look above the electrical box on the left side (below and to the left of the inducer motor), there should be a gray box that says Honeywell on it. Pull that cover off and there is a round dial in there with which to adjust the water temperature.

    Rich_49

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