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Thread: reduce water flow for solar?

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    Join Date
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    reduce water flow for solar?

    Hi,
    My 1 HP pump is blowing the connections off of my 3-way valve when trying to hook up the solar. Even when I have the solar blocked off, that is the connection that blows. I tried it half open and it still didn't hold. I am using flex hoses (I know not the best) and clamps on the connections. Do I need to reduce the water pressure somehow before it goes to the solar? My filter was about 18 psi before attempting the solar hook-up. I'll go out and take a picture, though I am ashamed of my meager plumbing attempts after seeing all the professionals here! We are about ready to say "forget it" with the solar - it's been plenty hot already and we might not need it until fall at this point.
    Thanks!
    Attached Images Attached Images
    Intex 18' x 48" metal frame
    Hayward 1 HP/ 100 sq ft XStream cartridge filter
    Intex SWG
    2 2x20 solar heaters on separate pump
    still a work in progress...

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    Mod Squad Bama Rambler's Avatar
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    SouthWest Alabama
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    Re: reduce water flow for solar?

    Try using two clamps on each fitting. Not an ideal situation but might work for you.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: reduce water flow for solar?

    OK, from reading on here, I have figured out that I need to switch my connections so that it goes in the solar at the bottom and out at the top. Other than that, is my pump too big?
    Intex 18' x 48" metal frame
    Hayward 1 HP/ 100 sq ft XStream cartridge filter
    Intex SWG
    2 2x20 solar heaters on separate pump
    still a work in progress...

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    JasonLion's Avatar
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    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: reduce water flow for solar?

    That style of hose connection can be finicky to get right. Your pump will be putting a little more stress on the hose clamps then they usually get, so a slightly imperfect connection will fail. Once you can get everything connected correctly, everything should be fine.
    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

  5. Back To Top    #5

    Join Date
    Nov 2009
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    Indialantic, FL
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    Re: reduce water flow for solar?

    Your plumbing confuses me. It appears that a black flex line comes out of the filter to a 3-way valve. I presume the black flex line coming out of the 3-way goes to the Pool? The white flex coming out the other side of the 3-way then seems to go both (through a "T") to the solar panel and to what I think is the Intex SWG. Where does the output of the solar panel and SWG go?

    In a traditional solar install the flow goes: pump - filter - solar - SWG - pool. If the solar or SWG can't handle the flow there is a bypass loop employed.
    Geometric 16X36', 16K gal, shotcrete, exposed aggregate plaster, acrylic coated concrete deck/cantilever coping;
    Pentair equipment suite (EasyTouch w/wireless, 2 Intellibrites, Intelliflo VS-3050, C&C 200 Filter, IC-40 SWG);
    Heliocol solar panels, Rocky's Roller, Blue Diamond robot

  6. Back To Top    #6
    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,887

    Re: reduce water flow for solar?

    The black hose from the filter is the water supply. Black from the 3 way valve feeds the solar panels. White is the return to the pool, which goes through an Intex SWG on the way to the pool. Because there isn't a check valve, the solar panels are pressurized any time the pump is running even when they are turned off.
    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

  7. Back To Top    #7

    Join Date
    Mar 2010
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    Kansas
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    Re: reduce water flow for solar?

    That is correct. So it is going pump - filter - solar - SWG - pool, unless the solar is bypassed. I'm guessing a check valve is going to need to wait until I go all PVC.

    In one posting I read that the clamps will hold a little better if the PVC is "roughed up" a little bit with some sandpaper. Do you think it would help?
    Intex 18' x 48" metal frame
    Hayward 1 HP/ 100 sq ft XStream cartridge filter
    Intex SWG
    2 2x20 solar heaters on separate pump
    still a work in progress...

  8. Back To Top    #8

    Join Date
    Nov 2009
    Location
    Indialantic, FL
    Posts
    323

    Re: reduce water flow for solar?

    thanks for the clarification - don't know why I couldn't see that.
    Geometric 16X36', 16K gal, shotcrete, exposed aggregate plaster, acrylic coated concrete deck/cantilever coping;
    Pentair equipment suite (EasyTouch w/wireless, 2 Intellibrites, Intelliflo VS-3050, C&C 200 Filter, IC-40 SWG);
    Heliocol solar panels, Rocky's Roller, Blue Diamond robot

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