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2 barometric dampers

hello hello I had a new oil furnace installed. Installer left the 2 existing dampers they are about 16" apart with a 90 elbow between . I feel the two dampers are pulling fumes from each other. Do I need 2? I have about 6 feet of 6" pipe with 2 dampers into a  4" power vent for 4 feet of 4 " then outside.  Why would I need 2 barometric dampers?    Thank you 


  • Steamhead
    Steamhead Member Posts: 16,889
    2 barometrics and a power vent? Can you post a pic?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    I’m guessing your overfire draft is way too high.
    You’re better off with a neutral pressure point adjuster.

    There was an error rendering this rich post.

  • jeremyred1
    jeremyred1 Member Posts: 3

  • jeremyred1
    jeremyred1 Member Posts: 3

    Here is a pic of the 2 dampers and the power vent on the left    From the power vent it's about 4 feet of 4inch pipe to the outside  thank you