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Thread: Advice with solar panel and pump

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    Drag.az's Avatar
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    Advice with solar panel and pump

    We were wanting to add solar panels to our roof. The problem is it's the 2nd story it is 20ft up to bottom of eve and 25ft from pump. I think we will need 4-6 4x12 panels. Will our pump be able to handle it ?
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    linen's Avatar
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    Re: Advice with solar panel and pump

    Can you post the pump model number?
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    Working on pic.. thx
    Attached Images Attached Images
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    linen's Avatar
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    Re: Advice with solar panel and pump

    What size plumbing do you have? I am not certain, but I think you may have trouble priming the panels at that height with that pump.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    I have 1.5 to and from
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    [attachment=0:325cdep1]20130810_141536.jpg[/attachment:325cdep1]Work in progress..
    Attached Images Attached Images
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    Mod Squad jblizzle's Avatar
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    Re: Advice with solar panel and pump

    The 1.5 SPL means that the pump is really more like a 1HP pump. I too think it may struggle some, but am not certain.
    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
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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    I didn't know that. Thx I have a large backyard but didnt want that many panels on ground taken up so much room.
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    Mod Squad jblizzle's Avatar
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    Re: Advice with solar panel and pump

    FYI, the true pump rating is based on the list HP and the service factor (SF). Manufacturers play games with the numbers for marketing.
    For example taking the Pentair Whisperflo line:
    WFDS-4 is called "full rated" with a HP = 1 and SF = 1.65 so the SFHP = 1.65
    WFDS-26 is called "up rated" with a HP = 1.5 and the SF = 1.1 so the SFHP = 1.65
    These 2 pumps are IDENTICAL besides the numbers on the sticker.

    Some above ground pumps have a SF < 1 and are designated with the SPL. It may even say on the sticker something like HP = 1.5 and SF = .66 making the SFHP = 1.0 or maybe the SF = .8 making the SFHP = 1.2 which would be the same as a non-SPL motor with a HP = 1 and a SF = 1.2

    On top of this, the wet-ends are designed differently, so all 1.5HP pumps may not perform the same. For example the Pentair Superflo is a smaller pump than the Whisperflo even though the HP may be the same.

    For AG pumps, one consideration is the head-loss. Most are NOT self-priming because they are below water level and are called "low-head" pumps because they are generally right next to the pool and there is not a large resistance to the flow ... so the pump does not have to work as hard. These "low-head" pumps may not have to ability to pump water up 20+ feet for a high solar system.

    What I am not sure of is what the "head rating" {I made this term up} is for your pump.

    Wow, sorry that got so long.
    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
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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    Thx, That wasn't too long at all when we are about to drop 1k on panels.. How can I find that out(head rating) I have been reading hydraulics section but some of this is kinda hard to understand. Which at work I run hydraulic motors and large blackmeer pumps. So I am not completely lost
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    Found it model 193262
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    Mod Squad jblizzle's Avatar
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    Re: Advice with solar panel and pump

    Well, you can find the head curve here: http://www.pentairpool.com/pool-owner/p ... ps-432.htm which shows that is is slightly less powerful than my pump.

    It "should" work if you keep the VRV lower. Let me see if we can get Mark to take a look.
    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!

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    Ok that would be great help. I was just reading that. The power curve . And dont think it could get the flow started. I may need another plan mayb just buy another pump just for solar
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

  14. Back To Top    #14
    Mod Squad jblizzle's Avatar
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    Re: Advice with solar panel and pump

    Well, according to the curve, if should be able to pump the water up 50 feet of so, but that does not account for the losses in the filter, and the other plumbing and in the panels.

    My Superflo curve starts out around 65 feet a zero flow and it is I think just adequate to run my solar at good flow on a single story. But I have a lot more plumbing to the house than you do.

    You can certainly help by using 2" pipe and fittings for everything you add.

    BTW, I PM'd Mark, so hope he will help.
    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!

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    I started with 1 1/4 didnt like that at all so went wth 1 1/2 . I was considering 2" but my skimmer and return had 1 1/2 fittings
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    mas985's Avatar
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    Re: Advice with solar panel and pump

    The Dynamo should be big enough to handle the priming for solar. It is classified as a AG pump but it is self priming and has medium head. I would definitely try it out first before buying a new pump.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    Oh, Light bulb. I will go with 2" Now that I look it over with new ideas I can run female threaded pvc, the only restriction will be the skimmer to pump basket. Which I do not even use the skimmer that much except to go thru, I pull from bottom under ladder, when noone is swimming.
    Attached Images Attached Images
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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    Drag.az's Avatar
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    Re: Advice with solar panel and pump

    Thx so much.. I will run sum pipe up and see how it does..
    13k - Martinique 15x30 52"
    Sta-Rite crystal flo 22" sand filter & 1.5 spl rated
    Gorilla pad / waveless wall foam / foam cove
    Buried 2ft TF-100, TFPC

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