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Thread: Disconnecting gas line to heater. (Rusted)

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    Disconnecting gas line to heater. (Rusted)

    I've seen a similar post, and the consensus was to just cut the line. Obviously you would need to double check that the gas was off, but I wanted to include a picture and see if anyone has any advice on where I should start to disconnect this without cutting. My situation is I'm replacing this heater with the exact same unit so I want to keep as much as possible to make it easier to just swap in the new heater.


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    Re: Disconnecting gas line to heater. (Rusted)

    Shut off the gas. Disconnect the union assembly right at the back of the unit. Then unscrew the pipe out of the gas valve. Reinstall
    Over 30 years in the pool business
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    Re: Disconnecting gas line to heater. (Rusted)

    Quote Originally Posted by swimcmp View Post
    Shut off the gas. Disconnect the union assembly right at the back of the unit. Then unscrew the pipe out of the gas valve. Reinstall
    Are you talking about where the crescent wrench is currently in the picture? I assume that's the union. My plumbing vocabulary isn't up to speed.


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    Mod Squad Jimrahbe's Avatar
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    Re: Disconnecting gas line to heater. (Rusted)

    Nathan,

    Yes, your crescent wrench is on one part of the union and you need to put a larger crescent wrench, or pipe wrench, on the larger part of the union.

    Jim R.
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    Re: Disconnecting gas line to heater. (Rusted)

    I just removed my heater from very rusted pipes. I just put a pipe wrench on a fitting near the middle and started working it back and forth. Several joints moved... Eventually I was able to work a pipe out of a tee. I was surprised that several fittings actually tightened quite a bit in the a process. I plan to clean and re-fit everything, but mine were in worse shape than yours.

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    Re: Disconnecting gas line to heater. (Rusted)

    Sorry I missed your crescent wrench in the picture. Yes soak it with WD-40 or PB Blaster to loosen any rust that may be there. You may need to let it set over a 24 hour period after soaking the union. You may also need two larger wrenches to be able to get it loose.
    Over 30 years in the pool business
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