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Thread: autopilot sizing question

  1. Back To Top    #1

    Join Date
    Oct 2007
    Location
    Central Texas
    Posts
    104

    autopilot sizing question

    My pool is 38,000 gallons and I was wondering if I should go with the SC48 or the SC60? I do run my pool pump 24x7 at a low speed. Ideally, 27 GPM to give me one turnover per day.

    Can anyone with autopilot experience advise if I should right size or go a little larger than needed?

    Thank you,
    Light grey plaster, stone coping, 38K gallon Roman shaped pool with a shallow end beach, table and bar stools, deep end bench and waterfall (Intelliflo 4X160). Taylor K-2006, Pentair 320 chlorinator, Intelliflow VF, Quad DE 100. 4 ColorLogics, 3 skimmers, 14 wall returns, 13 floor returns, TurboTwister slide, autofill and miles of pvc.

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: autopilot sizing question

    Salt cells are sized to provide the rated output over a 24 hour period. If you size the cell exactly to your pool size you'll have to run your pump 24 hours a day in order to maintain the proper FC level. That's part of the reason we recommend getting a larger cell. The other reason is that if you oversize it the cell will last longer because the life is rated in amphours, so a cell that's large enough that it can be turned down will last longer.

    Going with the SC-60 would be your best choice as it's just over 1½ times the pool size. We recommend going 1½ to 3 times the pool size when buying a cell. Going larger than 3 times has its problems too.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Join Date
    Oct 2007
    Location
    Central Texas
    Posts
    104

    Re: autopilot sizing question

    I didn't want to spend the extra money without good reason, so thanks for your response.
    Light grey plaster, stone coping, 38K gallon Roman shaped pool with a shallow end beach, table and bar stools, deep end bench and waterfall (Intelliflo 4X160). Taylor K-2006, Pentair 320 chlorinator, Intelliflow VF, Quad DE 100. 4 ColorLogics, 3 skimmers, 14 wall returns, 13 floor returns, TurboTwister slide, autofill and miles of pvc.

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