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What would cause this?

SlamDunkSlamDunk Member Posts: 453

Comments

  • hot rod_7hot rod_7 Member Posts: 9,107
    A pressure relief valve that is opening and closing could sound like that.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • GordyGordy Member Posts: 8,660
    Should be water traces from the relief valve popping if that is the case. I see the pipes shaking in the background in the video of the water heaters in question.
  • JUGHNEJUGHNE Member Posts: 5,129
    AO Smith Cyclone, bad misfiring combustion....maybe water in the burner compartment....poor venting/combustion air set up.
    I have had this happen, wish I had never seen/installed that heater. Over sensitive to anything slightly out of parameter.
    IMO
  • delta Tdelta T Member Posts: 703
    hmmm, I have been asked to install a cyclone (would be my first) for a hotel. It is one of 5, the existing venting is questionable. Maybe I'll pass on this job.....they already bought the water heater anyways, and I have months of work to get caught up on as it is......don't need a callback nightmare.

    Thanks @JUGHNE!
  • Intplm.Intplm. Member Posts: 72
    Almost sounds like steam flashing against condensate and tripping the relief valve. I wonder what the temperature settings were when this happened?
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