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Suddenly getting water hammer and cold radiators

jlc229
jlc229 Member Posts: 5
in THE MAIN WALL

my 1 pipe system has been working fine for the last few months, but all of a sudden today I’m not getting heat to two radiators and there’s very bad water hammer happening in the riser. All of the radiators are pitched correctly, pressure is at 2psi, water level is 2/3 up the sight glass, and I just completely flushed the boiler but it’s still happening. Anyone have any ideas ? It’s weird to me that it just started happening after working just fine.

Comments

  • neilc
    neilc Member Posts: 3,020

    are you sure of the 2 psi? which is just a bit high, and is the pigtail clear all the way back to the boiler?

    post a pic of the Ptrol, gage, and pigtail,

    water dirty in the glass? another picture?

    known to beat dead horses
    PC7060

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