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  1. #1
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    Default Flex gas line connection

    I thought there had been a previous thread about this "non standard' installation, but I couldn't find it. Is this allowed?


    Flex copy.jpg

    NHIE Practice Exam
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  2. #2
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    Default Re: Flex gas line connection

    Quote Originally Posted by Lon Henderson View Post
    I thought there had been a previous thread about this "non standard' installation, but I couldn't find it. Is this allowed?


    Flex copy.jpg
    Where exactly is the appliance for the appliance connector?

    Texas Inspector
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    What the plainspoken man lacks in subtlety, he makes up in clarity.

  3. #3
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    Default Re: Flex gas line connection

    Quote Originally Posted by Lon Henderson View Post
    I thought there had been a previous thread about this "non standard' installation, but I couldn't find it. Is this allowed?


    Flex copy.jpg
    According to the industry, CSS can be used where ever steel pipe would be used.
    The Benefits of Corrugated Stainless Steel Tubing (CSST) and CSST Installation & Safety Information


  4. #4
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    Default Re: Flex gas line connection

    Quote Originally Posted by Jimmy Roberts View Post
    According to the industry, CSS can be used where ever steel pipe would be used.
    The Benefits of Corrugated Stainless Steel Tubing (CSST) and CSST Installation & Safety Information
    Yes, but that is not a picture of CSST . . .

    Texas Inspector
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    What the plainspoken man lacks in subtlety, he makes up in clarity.

  5. #5
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    Default Re: Flex gas line connection

    Quote Originally Posted by Aaron Miller View Post
    Where exactly is the appliance for the appliance connector?
    That T and valve off it runs to a gas conversion fireplace. The flex continues the gas line to the furnace and water heater.

    If you choose not to decide, you still have made a choice.

  6. #6
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    Default Re: Flex gas line connection

    But, as Aaron stated, that's an appliance connector, not CSST.


  7. #7
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    Default Re: Flex gas line connection

    Quote Originally Posted by Lon Henderson View Post
    That T and valve off it runs to a gas conversion fireplace. The flex continues the gas line to the furnace and water heater.
    The appliance connector is intended to be installed only between the gas supply piping and the appliance itself. it should be used as a splice between two sections of threaded steel gas supply piping. This triggers IRC 102.4.

    Texas Inspector
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  8. #8
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    Default Re: Flex gas line connection

    Quote Originally Posted by Aaron Miller View Post
    The appliance connector is intended to be installed only between the gas supply piping and the appliance itself. it should be used as a splice between two sections of threaded steel gas supply piping.
    Welcome back, Aaron,

    "it should be used as a splice between two sections of threaded steel gas supply piping"

    I believe you are missing a "not" in there.

    Jerry Peck, Construction / Litigation Consultant
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  9. #9
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    Default Re: Flex gas line connection

    Quote Originally Posted by Jerry Peck View Post
    Welcome back, Aaron,

    "it should be used as a splice between two sections of threaded steel gas supply piping"

    I believe you are missing a "not" in there.
    Not a not, huh? Damn! Sorry! Multitasking strikes again . . .

    Texas Inspector
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    What the plainspoken man lacks in subtlety, he makes up in clarity.

  10. #10
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    Default Re: Flex gas line connection

    Why is this product not treated and require the same protection as CSST which is heavier grade.
    Seems ridiculous to bond CSST when this is downwind of it.
    Just thought after looking at a few thousand of them.


  11. #11
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    Default Re: Flex gas line connection

    Quote Originally Posted by wayne soper View Post
    Why is this product not treated and require the same protection as CSST which is heavier grade.
    Seems ridiculous to bond CSST when this is downwind of it.
    Just thought after looking at a few thousand of them.
    It's the distance that CSST covers which increases its probability of a lighting strike. All of the appliance connectors I have seen are normally less than 24" and are connected to black pipe.

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  12. #12
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    Default Re: Flex gas line connection

    An "appliance connector" means it must be within 6 feet of the appliance and connected to the appliance. See ANSI Z21.24 vs. LC1 for CSST, which is "piping" and not a "connector". Read the listed instructions for each. The application in the photo is improper. Flexible appliance connectors cannot exceed 3ft except for dryers and ranges, which can be up to 6ft. in order to pull the appliance out. You can NOT splice flexible appliance connectors the way you can CSST. The mechanical couplings with CSST are made up on site for each connection. The couplings on flexible appliance connectors are made in a factory supervised by a listing agency. Two entirely separate products.

    Keep the fire in the fireplace.

  13. #13
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    Default Re: Flex gas line connection

    Quote Originally Posted by Bob Harper View Post
    An "appliance connector" means it must be within 6 feet of the appliance and connected to the appliance. See ANSI Z21.24 vs. LC1 for CSST, which is "piping" and not a "connector". Read the listed instructions for each. The application in the photo is improper. Flexible appliance connectors cannot exceed 3ft except for dryers and ranges, which can be up to 6ft. in order to pull the appliance out. You can NOT splice flexible appliance connectors the way you can CSST. The mechanical couplings with CSST are made up on site for each connection. The couplings on flexible appliance connectors are made in a factory supervised by a listing agency. Two entirely separate products.
    I agree that CSST and gas appliance connectors are separate entities, each with its own set of manufacturer's installation instructions and other industry standards. That said, they are very similar in that they consist of thin-walled flexible stainless steel tubing. The subrogation attorneys apparently do not differentiate: : Angela Hahn : Subrogation & Recovery Law Blog

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