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    Unusual sound on a Burnham ESC (1 Post)

  • 04090 04090 @ 4:11 PM
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    Unusual sound on a Burnham ESC

    Been pleased with a Burnham ESC4 but have a concern about a new sound this year. 

    It's almost exactly like the sound a metal dryer outside vent flap  makes in just the right wind conditions, a merge between a clap and a metallic thud. 

    It happens twice in a cycle, the first originates about 30 seconds after the boiler ignites and again when it shuts off.  A single "clap" each time, twice per cycle.  It's central to the unit -- I can't pinpoint any location it's coming from as it just seems to suddenly resonate.

    Any known conditions that would create that sound?
    This post was edited by an admin on December 6, 2013 4:13 PM.
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