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Noisy pipes

RoosterBoy
RoosterBoy Member Posts: 459
in THE MAIN WALL
re purge the lines,lock them off and refill the boiler.open one zone at a time...listen....

if you energize the recirc thru one zone at a time you can often find the zone with the air pocket.

Comments

  • Rick_32
    Rick_32 Member Posts: 1
    Noisy Pipes

    I have a single family home with a newly installed Hydrotherm EW85 HWBB boiler which replaced an old Am. Std unit.
    Now I have a intermittent noise, similar to cascading water,
    when the system turns on.
    I've bled the air from the pipes.
    What I've heard, is that the new pump may be stonger than the old and is pushing the water faster than before...and that the resulting action will wear on the pipes.
    Anybody with any opinions or thoughts are welcomed!
  • Chuckles_4
    Chuckles_4 Member Posts: 43


    A too-big pump should not result in intermittent noise, it would be continuous while the pump is on.

    It is hard to tell without being there and you have given no details, but you probably have air in the pipes. Just because you have water coming out of the bleeder valves doesn't mean all the air is out.
  • Bob Schultz
    Bob Schultz Member Posts: 38


    I agree with Weezbo. If you can hear the water falling down the inside of the pipe, then the pipe is full of air and has a little water in it as well. Ideally, the piping should be completely silent. How was it piped?? Is the circulator on the supply side, after the air seperator and expansion tank?? Did they use a good quality air seperator and air vent ?? Take a look at some of the info in this site about "Pumping Away" from the expansion tank, and it may help.
  • Larry (from OSHA)
    Larry (from OSHA) Member Posts: 733
    Good points Bob

    Greetings,

    Bob's comment about location of the system pump is very important. From my own experience (I'm a homeowner) when my boiler was piped with the circulator on the return going into the boiler, every time it started, there would be the sound of air that I think you are hearing. Air being pulled out of the water and traveling through the pipes. When I changed to pumping away with the circulator on the supply side after the compression tank, ALL the air noises went away. Just my 2 cents worth. Good luck.

    Larry (from OSHA)
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