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releif vavle trouble

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TinMI
TinMI Member Posts: 3
in THE MAIN WALL
we just installed a new boiler at a customer home the boiler will heat the existing home and a 1200 ft addition (knb150). The pressure relief valve continues to pop. the customer said that he had problems w/ this in the past (burnham series 2) . I've already increased the size of the expansion tank and replaced the water feed, what else could it be?

T

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  • Unknown
    Unknown
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    feeder

    Where is the feeder connected to the system? It will and does make a difference.
  • TinMI
    TinMI Member Posts: 3
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    1

    it's piped in 1/2 copper between the expansion tank and the return and tied it the air seperator.
  • Al Letellier_21
    Al Letellier_21 Member Posts: 402
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    popping safety

    Does the bioler have a coil or a storage tank off the coil?? Pinhole in the piping?

    Did you reuse any equipment or is it all new?
  • TinMI
    TinMI Member Posts: 3
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    yep

    Yep there is a TT smart 40, we replace all the old EQ but the base boards and distribution piping are the old stuff
  • Big Ed_4
    Big Ed_4 Member Posts: 2,785
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    Pressure Build Up

    If the pressure builds up on temperture rise.. You don't have enough expantion tank . If pressure rises with circulator running .. It's the location of feed valve. If pressure builds up with a constant drip. Water is bypassing into the heating system .

    There was an error rendering this rich post.

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