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Thread: Solar

  1. Back To Top    #1

    Join Date
    May 2008
    Marana AZ


    I am getting ready to build a pool and have two pool contractors giving me different advice. One says to have a separate 1/2 hp pump for the solar system with its own intake and output ports in the pool. The other contractor tells me to have an automated valve and use the existing 3 hp variable speed pump. All of the equipment is Pentair and the easy touch will control the solar. Anyone have an opinion on this?

  2. Back To Top    #2
    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: Solar

    Either way will work but why have two pumps when you don't really need two. The advantage of solar with a VS pump is that you can optimize the RPM for low energy use and at the same time maximize heat transfer.
    Hydraulics 101; Pump Ed 101; Pump and Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater, ThePoolCleaner

  3. Back To Top    #3

    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Solar

    I agree. I have a variable speed pump (Pentair Intelliflo VF) and use the same pump when solar is off at 26 GPM (275 Watts), when solar is on at 48 GPM (1500 Watts), when the gas heater is on at 40 GPM (615 Watts), and when the pressure-side The Pool Cleaner is on at 15 GPM (540 Watts) on a dedicated line. I was able to get rid of my booster pump I had for my Letro Legend pool cleaner.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  4. Back To Top    #4
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Solar

    My pentair 3hp VS pump does everything, filter, solar, waterfall. I have different presets for each.
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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