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  1. 10-07-2014, 03:56 PM #1
    R Grab's Avatar
    R Grab
    R Grab is offline Member
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    Default Condensing boilers - 4 feet horizontal from meter... source?

    Regarding high efficiency gas condensing boilers, I'm finding a consistent regulation in manufacturer instructions, "a clearance of at least 4 feet horizontally must be maintained between the vent terminal and gas meters, electric meters,...". It's so consistent, there must be a regulation somewhere, but I can't find it in the 2012 IRC or 2012 NFPA 54. Any ideas where I can find the source for this?... tia

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  2. 10-07-2014, 06:32 PM #2
    Mike Lamb's Avatar
    Mike Lamb
    Mike Lamb is offline Member
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    Default Re: Condensing boilers - 4 feet horizontal from meter... source?

    NFPA 12.9.4 talks about protecting gas meters from gas vents. I don't know why the 4' distance is shown in most manufacturer's instructions.

    Mike Lamb
    Inspection Connection, Inc.
    http://www.inspection2020.com/
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