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Two Burnham oil fired, hot water boilers, lost in 16 years. Boiler # 1 lost in 3 years, Boiler # 2 lost this year, 14 years old,. Cracked cast iron section. Model # PV78WCTBWN.

Piped beautifully, 5 circulators, 27 zone valves. Sits a large 6 car garage at the back adjacent to inside basement wall. Provides domestic hot water to an 80 gallon SuperStor Ultra. Any ideas?


  • Zman
    Zman Member Posts: 7,009
    Thermal Shock

    Thermal shock would be my first suspect.

    Condensation would be the next.

    Is it radiant heat?

    Do you have pictures or drawing of the piping?

    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • Robert O'Brien
    Robert O'Brien Member Posts: 3,390
    Cracked section?

    Where? On right side above cleanout? If so,it's quite common on V7 boilers
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