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  1. #1
    Join Date
    Mar 2007
    Location
    Western Montana
    Posts
    255

    Default Max length of flex gas connectors

    What is maximum allowed length of flexible (SST) gas (propane) connectors to water heaters and furnaces? If I read the IRC correctly, it is 3 feet for water heaters which is not a moveable appliance (oddly enough, it allows longer lines to dryers and ranges). I also don't see any IRC requirements for support of flex gas lines. The manufacturer is Dormont; they seem to specialize in commercial kitchen applications, so don't list any restrictions on residential installation. I am worried about this installation because this 6' gas line runs unsupported about 18" above floor behind the water softener - what if they had to work on the water softener and it falls over? I'd like to be able to back up my recommendation for a call to a plumber (especailly because it is a small town, so it would likely end up being the same guy that installed it in the first place)

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  2. #2
    Join Date
    Mar 2007
    Location
    Near Philly, Pa.
    Posts
    1,632

    Cool Re: Max length of flex gas connectors

    Flexible appliance connectors should not be confused with CSST. Flex connectors can be a max of 3 ft except for ranges and domestic clothes dryers, which can be a max. of 6 ft. The intent is to allow the appliance to be pulled out for service.

    Routing a flex connector behind another appliance is an improper application as this must be "piping" and not a "connector". Also, see above limits.

    HTH,
    Bob

    Keep the fire in the fireplace.

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