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  1. #1
    Join Date
    Sep 2007
    Location
    NC
    Posts
    28

    NC Fuel Gas Code 2009 Question?

    Vent Connectors sizes.

    Why does 503.10.9 say that the horizontal length of a single wall connector can be 75% of the vent height, but 504.3.2 says that the max vent connector horizontal length shall be 1.5 feet per inch of the connector diameter? Any clarification about vents and connectors would be appreciated since I'm studying for H-3 Test.

    Thanks

  2. #2
    Join Date
    Sep 2008
    Location
    VA
    Posts
    1,762
    Quote Originally Posted by Stephen260B View Post
    Vent Connectors sizes.

    Why does 503.10.9 say that the horizontal length of a single wall connector can be 75% of the vent height, but 504.3.2 says that the max vent connector horizontal length shall be 1.5 feet per inch of the connector diameter? Any clarification about vents and connectors would be appreciated since I'm studying for H-3 Test.

    Thanks
    I believe section 503 deals with general regulations, and section 504 deals with Category 1 appliances, specifically.
    "The only true wisdom is in knowing you know nothing" Socrates

  3. #3
    Join Date
    Aug 2007
    Location
    Northern VA 38 degrees N by 76 degrees W
    Posts
    5,060

    503.10.9

    Quote Originally Posted by Stephen260B View Post
    Vent Connectors sizes.

    Why does 503.10.9 say that the horizontal length of a single wall connector can be 75% of the vent height, but 504.3.2 says that the max vent connector horizontal length shall be 1.5 feet per inch of the connector diameter? Any clarification about vents and connectors would be appreciated since I'm studying for H-3 Test.

    Thanks
    limits the overal maximum connector length that could be calculated by504.3.2

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