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Thread: Installation of SWG before the heater

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    Installation of SWG before the heater

    I am in process of installing new SWG. If I install after the filter and before the heater it will be a 30 minute job. The piping that comes out of the heater only runs about 6 inches before hitting valves and will take major planning and work to re-plumb to accept SWG.

    What will happen if I put this in before the heater? Living in Houston I only use the heater for maybe 10 hours a year.

    I appreciate any advise.
    12' x 24' x 4.5' AG oval (8800 gal.)
    Sta-Rite 200 BP Sand Filter
    Hayward 1 1/2 HP Pump
    Aqua-Trol SWG

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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    Re: Installation of SWG before the heater

    The SWG should always be installed after the heater. The risk of corrosion to the heater is too great otherwise.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Join Date
    Jul 2007
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    Brisbane, Australia
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    874

    Re: Installation of SWG before the heater

    Quote Originally Posted by allshotup
    What will happen if I put this in before the heater?
    your heater core will corrode quicker than normal, regardless of how much you use your heater

    the ideal installation is when SWG and heater run in parallel

    the next best is SWG after the heater and preferably at some distance from it

    installing it before the heater is a big NO NO, and should be avoided unless absolutely necessary (or unless your heater has titanium core)

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    Re: Installation of SWG before the heater

    Not the answer I was looking but I am sure you are correct. I will go to plan B.

    Thanks
    12' x 24' x 4.5' AG oval (8800 gal.)
    Sta-Rite 200 BP Sand Filter
    Hayward 1 1/2 HP Pump
    Aqua-Trol SWG

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