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Thread: Intelliflo VF Power Consumption

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    Intelliflo VF Power Consumption

    I've been working for some time on a pool that was designed from the beginning with low power consumption in mind. The pool is about 30,000 gallons and has 4 floor returns, a main drain, suction from the skimmers and return to the skimmers (for venturi). The Intellflo pump handles all the pumping needs eliminating the need for a boost pump for a pressure cleaner.

    Today I powered it up and I thought there might be some interest in how much energy it is using running the basic functions.

    gpm watts pressure

    15 133 2.0
    20 145 2.0
    25 165 2.5
    30 191 3.0
    35 240 3.5
    40 295 5.0
    45 370 6.0
    50 500 7.0

    First off I wouldn't put too much faith in the back pressure numbers. The reading are such a small percentage of full scale that they could easily be off substantially particularly at the low end. Second the power numbers are from the unit itself not from a calibrated watt-meter. Still the data gives a good idea of how the system is performing which appears to be quite efficiently. Assuming 1 turn/day and $0.10/kwh this setup would consume less than $10/mo in electricity.

    What these number don't include would be the cost of running any water fixtures, pressure cleaners or the venturi skimmers. I'll be testing the last of those next, then the pressure cleaner and will post the results as soon as I have them.
    33'x15' x 52" Aqualeader
    Gallons ? - (I use appx 13,500 to calculate "stuff")
    33 x 15 x 4.3 x 5.9 = 12,558. or . . The Pool Calculator = 14,400
    Hayward S-166T 100Lb Sand Filter - Hayward Power-Flo LX 1HP Pump
    Intex S.W.G.

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    Join Date
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    San Rafael, CA USA
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    Re: Intelliflo VF Power Consumption

    Wow, that's great. What kind of piping is being used in this situation? Is it 2.5" or 3" for the pressure side and 2" or 2.5" for suction?

    In my pool with 1.5" suction lines split to two lines (one for two floor drains and the other to one skimmer) and one 2" pressure line that splits to 3 1.5" returns, I get the following with solar off:

    15 GPM, 1185 RPM, 155 W, 3 PSI
    18 GPM, 1325 RPM, 195 W, 4 PSI
    24 GPM, 1460 RPM, 255 W, 4 PSI
    30 GPM, 1805 RPM, 420 W, 6.5 PSI
    36 GPM, 1975 RPM, 535 W, 8 PSI
    42 GPM, 2160 RPM, 685 W, 9.5 PSI
    48 GPM, 2310 RPM, 835 W, 10.5 PSI
    54 GPM, 2490 RPM, 1030 W, 12 PSI
    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"

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    Re: Intelliflo VF Power Consumption

    I plumbed it so long ago I've forgotten, but its large enough that the back pressure is insignificant at these flow rates. I'd suspect that the difference between our systems is the MPV and jetting.

    Multiport Valves often are the largest single contributor to an otherwise low head system so I choose a filter with a side mounted valve which is upsized from top mounted designs. Also my returns are floor mounted which have significantly more face area than your typical eyeball.

    That's the good news. The bad news is that the venturi skimmers work by creating a strong jet of return water to the pool that draws in water to the skimmer and creating that strong jet requires the pump to do more work, even though the flow rate per skimmer is only around 6-8 gpm. As of this morning I partially closed the valve regulating flow to the floor returns until the flow to the skimmer returns looked about right (the best I can do until I hook up something to measure it) and the power consumption at 25 gpm hopped up to about 290 w. Not unexpected.

    Hopefully I be learning a lot more about how to set up the system as I play around but this initial information has made me aware of something I hadn't focused on before...that skimming consumes significant power. Given that its yet another reason for an automatic pool cover and to keep it closed when the pool isn't in use. One not only keeps dirt out and heat in but there is no reason to run the skimmers when the pool is covered.

    It looks like I'll have to consider adding a "pool open/closed" sensor so that I can automatically have the skimmers go on and off depending on if the pool is open or not.
    33'x15' x 52" Aqualeader
    Gallons ? - (I use appx 13,500 to calculate "stuff")
    33 x 15 x 4.3 x 5.9 = 12,558. or . . The Pool Calculator = 14,400
    Hayward S-166T 100Lb Sand Filter - Hayward Power-Flo LX 1HP Pump
    Intex S.W.G.

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    Join Date
    Aug 2009
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    North Central Texas
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    Re: Intelliflo VF Power Consumption

    With clean filter mine are closer to sbe's than chem geek's. When I open and clean the filter (my quad DE, using Fiber Clear, and my loads of sticky clay powder aren't successfully clearing off the Quad cartridges with backwashing. ) I'll get numbers and stats on plumbing. When filter is not clean, as it is now, the wattage and rpm go way up. When filter clean, turning on booster, numbers don't change significantly.

    gg=alice
    1981, 25K, IG, Blue Plaster 1996, somewhat oval, widens a bit at shallow end, 1.5" pipes, 2" at Pad, 1 separate main drain, 1 skimmer, 4 returns + dedicated cleaner return, 10 ft deep end with very fast decline from shallow, Pentair Quad 80 DE, Pentair Intelliflo VF, 3/4 HP Booster Pump (equipment pad about 8 ft below top of pool), Challanger 3/4 Trash/Emergency Pump 120v, Polaris 280 (pressure), iRobot Verro cleaner (robotic), Aquabot Turbo (robotic), Jacuzzi Tracker 4X (vacuum) Pool Blaster (Buster), Two (2) PoolSkims, Solar Breeze (solar powered top skimmer) (beta to ver. 2, release date 2010), ColorSplash LED replacement bulb. Aries 550 gal separate spa, 2002 (our 3rd and BEST spa) , BBB-Bromine

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    mas985's Avatar
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    Re: Intelliflo VF Power Consumption

    sbe,

    Do you have the RPM numbers to go along with the others?
    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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    Re: Intelliflo VF Power Consumption

    I'll rerun the test tonight and post them.
    33'x15' x 52" Aqualeader
    Gallons ? - (I use appx 13,500 to calculate "stuff")
    33 x 15 x 4.3 x 5.9 = 12,558. or . . The Pool Calculator = 14,400
    Hayward S-166T 100Lb Sand Filter - Hayward Power-Flo LX 1HP Pump
    Intex S.W.G.

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    tsunami's Avatar
    Join Date
    Sep 2008
    Location
    Oceanside, CA
    Posts
    138

    Re: Intelliflo VF Power Consumption

    Quote Originally Posted by sbe
    my returns are floor mounted which have significantly more face area than your typical eyeball.
    Do they have regular drain covers over them?
    40 X 26 Free Form Pool with attached 9 X 7 Spa raised 18" with 8 Jets and Spillover, and an Art Rock Waterfall/Grotto with accent rocks, 26,000 gallons
    Intelliflo VF-3050 for Pool, VS-3050 for Spa Jets, VS-3050 for Waterfall/Grotto, Quad DE 80, 400K BTU Mastertemp, Intellitouch i7+3 w/ iS10 10 Function Spa-Side Remote, Intellichlor IC40 Salt Chlorinator, Telephone Remote, 2 Intellibrites for Pool/ 1 for Spa, Solar Panels on 2 story Roof w/ 75% coverage
    Pebble Tec Tropical Breeze Tsunami's Pool Build

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    Re: Intelliflo VF Power Consumption

    No they are designed especially as in floor returns. Round, about 6" in diameter with a solid center and a wide slot so there is a ring shaped area where the water exits. Fairly standard part. With 4 of these in place the face area is probably as large as the cross section of my piping so there almost no additional head loss.

    Normally the pool runs around 18 gpm total so each skimmer runs at 9 gpm and flows 50+ gpm through each basket. When the heat kicks in the pump gets upped to either 25 or 40 gpm and a valve partially opens so that the additional flow goes to the floor. This keeps the head loss to an absolute minimum plus I like the idea of directing heated water to the bottom of the pool.
    33'x15' x 52" Aqualeader
    Gallons ? - (I use appx 13,500 to calculate "stuff")
    33 x 15 x 4.3 x 5.9 = 12,558. or . . The Pool Calculator = 14,400
    Hayward S-166T 100Lb Sand Filter - Hayward Power-Flo LX 1HP Pump
    Intex S.W.G.

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