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  1. #1
    Join Date
    Apr 2005
    Location
    somewhere out there
    Posts
    91

    Mod Con boiler catergory 4 venting though roof

    I have a customer who would like there Lochnivar Knight boiler cvpc vent pipe changed from a side sill plate vent to a up though the roof vertical vent.
    The snow line is a problem even though the vent and intake go up 2 feet from the sillplate. There is a bedroom closet 10 feet to the left of the boiler.
    I was thinking of framining in a chase in the corner of the closet and going up though it and out the side at around 8 feet or up though the attic to roof. Lochnivar wants cpvc used for any closet or alcove install. cpvc is rated at a higher temp then pvc but i cant find a section in the fuel gas codebook on plastic venting up though the house. What does everyone think .

  2. #2
    Join Date
    Sep 2004
    Posts
    116
    We go by manufactures specs. Always. Even though I don't agree with all of it.

    CYA!

  3. #3
    Join Date
    Aug 2007
    Location
    Northern VA 38 degrees N by 76 degrees W
    Posts
    5,060
    Quote Originally Posted by t2 View Post
    I have a customer who would like there Lochnivar Knight boiler cvpc vent pipe changed from a side sill plate vent to a up though the roof vertical vent.
    The snow line is a problem even though the vent and intake go up 2 feet from the sillplate. There is a bedroom closet 10 feet to the left of the boiler.
    I was thinking of framining in a chase in the corner of the closet and going up though it and out the side at around 8 feet or up though the attic to roof. Lochnivar wants cpvc used for any closet or alcove install. cpvc is rated at a higher temp then pvc but i cant find a section in the fuel gas codebook on plastic venting up though the house. What does everyone think .
    CPVC is in the installation manual, and there is nothing in the codes regulating it.

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