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Noise in boilers

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Bob D.
Bob D. Member Posts: 1
in THE MAIN WALL
I have installed a three module boiler Slant fin Liberty II (each rated at 300 Mbtu) hot water system using primary secondary piping. In the secondary piping, each boiler has a 0010 taco pump and check valve. When any of the boilers gets to high temp set point shutdown, they make a perculating noise for about 30 seconds. The primary piping has two zones with a Taco 0012 pump circuoating all the time extending to 10 apartments each. Each apartment has a thermostat controlling zone valves. Do you have any ideas about what is causing this noise and how to fix it?

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  • Unknown
    Unknown Member
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    Could you draw a diagram and post it here?

    Or could you fax me a drawing? I'm at fax no. 516 484 6958, and at phone number 800 873 4346. I'd like to try to help.

    Noel
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