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baseboard noise

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Jeff Elston
Jeff Elston Member Posts: 289
I have seen a zone valve bang pretty good , it was in backwards!

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  • larry_30
    larry_30 Member Posts: 2
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    baseboard noises

    we have a customer with a Slant Fin gas boiler, and an Electro Mate electric boiler. Each boiler has it's own Grundfos 1524F circulating pump. There are three zones in the house with Honeywell zone valves. If the electric boiler is on, one of the sections of baseboard in the living room bangs and moves when the call for heat is completed. This does not happen if the gas boiler is running. There is a check valve by each circulating pump. this system has been in for several years, but the banging just started last spring.
    what is causing the banging?? check valve?? zone valve??
    thanks for the help.
  • Rich Kontny_3
    Rich Kontny_3 Member Posts: 562
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    Noise

    Electric boiler probaly has immersion type heat elements and a fairly small water capacity. Have you pulled the element(s) to check for buildup or possibly a burn't out element?

    Has electric boiler been properly drained to remove sediment from initial startup?

    Is electric boiler in series with gas boiler or is it parallel with isolation valves? Could be air problems if you are isolating the electric boiler by shutting off the valves.

    Big commercial water heaters that are electric have a very distinct noise as they heat especcially if the water quality is bad.

    Process of elimination is the only way to pin down this one!

    Good Luck!

    Rich K.

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