Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Can I use a SWG in a system with 2 speed pumb and solar

  1. Back To Top    #1

    Join Date
    Apr 2009
    Location
    Sarasota Florida
    Posts
    143

    Can I use a SWG in a system with 2 speed pumb and solar

    Considering putting in a Hayward Aqua Rite 25000 for my 10000 gallon pool. I have a 2 speed pump that runs on low until the solar control calls for heat. Once that happens it will turn on hi and run until it reaches temp. Will this effect the operation of the swg? Flow rate on high is about 60gpm and about 10gpm on low. Is the swg effected by flow or just run time? If it is just run time then my question is mute.

    thanks in advance.
    Kidney shaped ~ 10000 gallon Ig Plaster pool with pool cage. 120sf Cartridge filter. Pentair WhisperFlo WFDS-26, 230 Volt, 7.8/3.0 Amp, 1-1/2 Horsepower 2 speed pump, Solar panels on the roof. Heliotrope HelioMatic 4000D solar controller.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Can I use a SWG in a system with 2 speed pumb and solar

    SWGs have a minimum flow rate, as long as you are above that you will be fine. Most of the time two speed pumps on low are above the required flow rate for the SWG, but now and then, depending on details of your plumbing, there isn't quite enough flow and they will only work on high. With a WFDS-26 you should be just fine unless your plumbing is amazingly convoluted.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Can I use a SWG in a system with 2 speed pumb and solar

    Also, curious about how you came up with your flow rates. It is not easy to determine as it is a function of your plumbing and equipment.

    Generally I seem to have read that the low speed is roughly half the flow rate of the high speed given the same water path.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4

    Join Date
    Apr 2009
    Location
    Sarasota Florida
    Posts
    143

    Re: Can I use a SWG in a system with 2 speed pumb and solar

    Was going from memory at work. You are correct, my low is 30gpm and my hi is 60. I have an inline flow meter that I read. Not sure why I thought it was 10.
    Kidney shaped ~ 10000 gallon Ig Plaster pool with pool cage. 120sf Cartridge filter. Pentair WhisperFlo WFDS-26, 230 Volt, 7.8/3.0 Amp, 1-1/2 Horsepower 2 speed pump, Solar panels on the roof. Heliotrope HelioMatic 4000D solar controller.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •