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Thread: Intelliflo VS (011018) RPM / watts to GPM

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    Intelliflo VS (011018) RPM / watts to GPM

    Hi, I just purchased and installed an Intelliflo VS (011018) but I really have no idea what I should be setting the speed at to get the desired GPM and rollover during the day. Some of the forum posts mention an Excel spreadsheet to approximate it but it's been taken offline. I was hoping someone who still has it can give me an approximate GPM at RPM for my install (or send it to me if that's easier). Note that I have 1 1/2" plumbing which I think is quite restrictive.

    Here are the numbers I see:

    Solar off:

    RPM Watts
    750* 100**
    1000 140**
    1200 160**
    1400 200**
    1600 290
    1800 388
    2000 519
    2200 660
    2400 845
    2600 1050
    2800 1280

    Solar on:

    750*
    1000 120**
    1200 130**
    1400 155**
    1600 250**
    1800 345
    2000 460
    2200 592
    2400 755
    2600 930
    2800 1180

    * under 1000RPM doesn't seem to provide enough flow
    ** at lower RPMs the wattage really jumps around (probably as much as 20%) so getting an accurate figure is difficult
    *** I'm not sure how much pressure my lines can take so I've set the max to 2800RPM

    In case it makes any difference, the pool is about 15k gallons.

    Let me know. Thanks,
    Mike

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    Join Date
    Jun 2010
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    Re: Intelliflo VS (011018) RPM / watts to GPM

    This is probably the spreadsheet in question. It's not mine - so I can;t quite vouch for it - but it's proven fairly accurate with my system.
    Attached Files Attached Files
    16K Gal Plaster | Compupool SWG | Intelliflow VF | TF-100

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    Re: Intelliflo VS (011018) RPM / watts to GPM

    Wow. That was fast. Thank you so much.

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    JasonLion's Avatar
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    Re: Intelliflo VS (011018) RPM / watts to GPM

    Is this for a commercial or residential pool? For residential, you don't really want to set the pump based on GPM. You want to setup the pump based on getting done what you need to get done. For example the ideal speed is the lowest speed that keeps the skimmer(s) working well, but not below about 900 RPM in any case.
    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

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    Re: Intelliflo VS (011018) RPM / watts to GPM

    Thanks for the info. It's for a residential pool. I was just going to calculate the gpm I want to turn over 30000 gal / day (approx 21 gpm for 24/7 to turn over twice per day). We do have the solar heating system that requires higher speed during the day so I was probably going to set 2 speeds - higher one for 7AM to 7PM and lower for 7PM to 7AM. On the other hand, we do have tiered hydro and it costs more during the day so I might just try to get around 15 gpm during the day and 25-30 when hydro is cheaper.

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    JasonLion's Avatar
    Join Date
    May 2007
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    Re: Intelliflo VS (011018) RPM / watts to GPM

    The one turnover per day rule is a simple rule of thumb that only gives you a rough starting point for how much water you need to move each day. For the great majority of pools the ideal pump run time is significantly below one turnover. Also, the pump gets less efficient on the lowest speeds. At around 1000 RPM, where it is most efficient, it will be moving noticeably more than 20 GPM in most pools (though that varies with the pool details). Even with 30,000 gallons, I very much doubt you need anywhere near 24 hours a day of pump run time.

    Start by figuring out the lowest speed where the skimmer(s) work well, almost always more than 1000 RPM, but don't go below 900 RPM regardless. Then adjust the pump run time down slowly week by week until you notice the first sign of losing the sparkle, add an hour back to the run time and that is your ideal setup.
    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

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    Re: Intelliflo VS (011018) RPM / watts to GPM

    Thanks for the extra info. I'll try that out then.

    I hadn't really considered not running the pump 24/7 since we also have a salt chlorine generator and the solar heater (both of which need the pump to run while they're 'on'). Also we do keep our pool fairly warm (usually 88-90F) and we have a pretty high swimmer load for a residential pool (we let our neighbors use it too) so I'd guess the pool is probably in use a good 4 hrs / day everyday on average.

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    Join Date
    Sep 2014
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    San Ramon, California
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    65

    Re: Intelliflo VS (011018) RPM / watts to GPM

    Can someone show how to read/use the Intelipro v1.4 excel spreadsheat above?
    Thanks.
    14,000 gals; IG gunite - Wet Edge Primera Stone finish; Sta-Rite/Pentair Intelliflo variable speed; Sta-Rite/Pentair system3 S7M400 cartrige; Sta-Rite Max-E-Therm 400 heater; (Pentair Rainbow 320 Chlorinator- for vacation use only); built-in automatic pool cover; Trident II UV system (on recall not currently used); built 10/31/2012; TFT-100; MX8 cleaner

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