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Transport pipe making noices

BoscoBosco Member Posts: 15
edited November 2018 in Gas Heating
Why does the transport pipe making water flow noices? Each time the time is turn on


  • Mark EathertonMark Eatherton Member Posts: 5,843
    Sounds like a low flow condition. How many pumps are on your system? Got pictures?

    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • hot_rodhot_rod Member Posts: 13,201
    Could be the boiler is over sized for the loads(s) is it a zoned system? What type of heat emitters. how about a load calculation for the building.

    Copper tube boilers are a fairly low mass, low water content boiler. Without a consistent load they were prone to short cycling.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 6,943
    As mentioned above you boiler needs constant full flow when it is firing. Sounds like a flow restriction or a pump is not working
  • tommyboy5740tommyboy5740 Member Posts: 1
    I have the same problem with my epb 110. It started to give short term hot water and worsened to only 10 second intervals before cold water ran. I am looking for apost that may offer similar assistance.
  • ZmanZman Member Posts: 5,748
    It is probably better to start another post with all the details of your problem including pictures.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • GordyGordy Member Posts: 9,523
    Could be flow issue. Is this a new development, or something you just took notice of?

    Seems some flow is occurring to drop 30 degrees in 1:30 min.

    Is it warmer outside now?
  • Steve MinnichSteve Minnich Member Posts: 2,538
    They are suppose to be piped primary/secondary. I've yet to see one piped that way.
    PHC News Columnist
    Minnich Hydronic Consulting & Design, LLC
  • Steve MinnichSteve Minnich Member Posts: 2,538
    Or, at least, with a bypass.
    PHC News Columnist
    Minnich Hydronic Consulting & Design, LLC
  • kjl520kjl520 Member Posts: 10
    If I'm not mistaken... That Laars is a copper finned boiler. Similar to a Lochinvar. You definitely have a flow issue. I've seen it many times before. These boilers have a very small volume. If you don't have constant flow through the boiler it will over heat in less than a minute. It might make some pretty weird sounds as the water boils inside the boiler. I would say your flow restriction is either from a failed pump or air lock. My money would be on a bad pump. You need a technician.
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 6,943
    I always thought piping a copper fin boiler with primary secondary was mandatory
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