Expansion Tank Question

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by bob4178, Oct 18, 2009.

  1. bob4178

    bob4178 New Member

    Joined:
    Oct 18, 2009
    Location:
    wayne pa.
    I have a crown boiler that is about 8 years old model # ABF-175SPD. The expansion tank went but I'm not exactly sure what size tank I should buy to replace it. Does anybody have experience with this type of boiler?
     
  2. Doherty Plumbing

    Doherty Plumbing Journeyman & Gas Fitter

    Joined:
    Jun 22, 2009
    Occupation:
    Red Seal Journeyman Plumber & Licensed Gas Fitter
    Location:
    Penticton, BC
    Your expansion tank isn't sized based on the boiler it's sized on the amount of water in the system. Your expansion tank should beable to absorb upto 4% of the volume of the system (give or take).

    It's probably a 2 or 4 gallon expansion tank if this is a residential house.
     
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