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hydrotherm boilers

Steve_12 Member Posts: 1
has anyone had any problems with Hydrotherm HC boilers having too much heat in the firebox. I believe this may be a design flaw to try to get more effeciency. The roll out switch trips. The distributors answer to this was to replace the switch with one with a higher limit. The jproblem is that it gets so hot that it has actually discolored the jacket from too much heat. The boilers i am working with are 4 years old or less.


  • Terry
    Terry Member Posts: 186

    check the alignmment of the combustion chamber. I recall seeing similar prob a few years back. (shifted during shipping)

  • stevel
    stevel Member Posts: 25

  • stevel
    stevel Member Posts: 25

    is the most common cause for what you are describing
    I've seen a few case's in hog barn's where all the exhaust fans create a negative draft situation leading to what you describe.
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