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Thread: Variable Speed Pool Pump Questions

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    Variable Speed Pool Pump Questions

    Our existing single speed 1 HP Pentair pump burned out and we are looking to replace it with a variable speed.

    Here are the specs:

    Location: Northern California (year round operation)
    28,000 gal
    1.5" piping
    ~50' of head
    Hayward DE filter (60sf)
    Kreepy Krawley suction cleaner, retrofitted on 2" line
    -No Spas, water features, etc.
    230v Electrical

    I have been looking at Pentair and Hayward. I assume that I don't need a pump over 1.5 HP as I am limited by the 1.5" pipe's flow rate? Others have suggested the Pentair Inteliflo, but that is a 3HP unit. Also looked at the Pentair Superflo 1.5HP and the Hayward Tristar, Maxflo VS, and Super Pump VS.

    The other question is control on/off. Right now our existing pump is on a third party Insteon 230v wifi controller that controls on/off. Any of these pumps compatible with that or will everything now be controlled at the pump unit keypad. I don't want to get into an expensive pool wifi control unit, or pool automation system.

    Any help much appreciated!

    -Mike

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    Re: Variable Speed Pool Pump Questions

    I been runing a Hayward SP2303VSP MaxFlo pump for a week not and I love it. It is super quiet and very powerful. It is 1.65hp but you won't need to run it at 100% ever. I have 2 inch drain and return manifold but it will work fine on 1.5 inch. In fact it could be piped either at 1.5 or 2 inch with the supplied universal connectors that they package with it. BTW I had a 3/4 hp pump before. And this pump runs without any need for automation. In fact you don't even need a timer because it has an integrated timer with 8 schedule points that let you control run time and speed for 24/7 operation. I can't speak for other pumps as this is my first vs pump.

    Ps. If you want I can look at the literature when I get home and I will tell you if it could be controlled with a third party controller. I am pretty sure that it could be with a normal open dry contact.
    15k gallon free form in ground. Marlin blue Diamond brite finish. Gray pavers deck with gray coping. Hayward SP2303VSP MaxFlo VS pump, Hayward C4030 425 and Raypak 90k BTU Heatpump. Led pool light

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    Mod Squad pooldv's Avatar
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    Re: Variable Speed Pool Pump Questions

    Welcome to TFP!

    The Pentair Superflo VS pump or the Hayward Maxflo VS would be fine for your pool. You can run the pump at 1100 or 1200 rpm for most skimming, filtering and making chlorine with an SWG and it will only use 150 to 200 watts. Then you can run it higher when needed for vacuuming, cleaner, etc. They have built in timers and can be programmed to run at different speeds at different times.

    I would think about punting that suction cleaner and replacing it with a robot at some point. The Doheny's Discovery same as Maytronics S200 same as Dolphin Triton is what I have and it is great! Lots of love for the S-series robots from folks on TFP.
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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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    Mod Squad Jimrahbe's Avatar
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    Re: Variable Speed Pool Pump Questions

    Mike,

    Most variable speed pumps have their own internal timers. They are designed to be continually connected to AC power, you don't normally turn the power on/off.

    Pick the pump you want, but I would not base the decision on the HP rating. It is somewhat irrelevant as unless you run them at the top speed it will never be a problem.

    I have two Intelliflo 3 HP units at a couple of rent houses and both pool only have 1.5" plumbing. Since they run at about 1,200 RPM most of the time, the MAX HP is not an issue.

    Thanks for posting,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    CJadamec's Avatar
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    Re: Variable Speed Pool Pump Questions

    Oddly enough when sizing a VS pump the higher over all HP makes it more efficient to run at lower speeds. So for all the pumps you mentioned the inteliflo will in theory be the most efficient for any given flow rate. The superflo VS, Tristar VS, and maxflo VS are all less expensive up front and will handle your pool no problem.

    All that said tho have you looked into a 2-speed pump option it will be cheaper still and save almost as much as a VS pump would on your electric bill.
    Chuck-
    15x30 AG, Pentair Superflo VS, 19" sand filter, TF-100 test kit
    Aqua Comfort ACT750 heat pump / 6x20 ground mount solar panel / DIY automation

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    Re: Variable Speed Pool Pump Questions

    I'm looking for a VS pump because I can get a rebate, on top of the energy savings.
    Had been looking at Pentair, but found Mas' pump spreadsheet today
    http://www.troublefreepool.com/threa...ull=1#post6231

    From what I can figure out, the Maxflo SP2303VSP will be more efficient than the Pentair, and save even more money.
    But the Pentair 011018 is really close with the numbers I used for my pool.
    25,000 gal and 0.0167 plumbing curve.
    25,000 gal fiberglass pool, Raypak 336k BTU low nox RP 2100 gas heater, Pentair CCP520 520 sq ft Cart filter, Max-Flo VS2303VSP pump, diy control and automation system

    seperate spa, with own pump, cartridge filter, Hayward H200FDN heater, diy control and automation system

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    Re: Variable Speed Pool Pump Questions

    Thanks all! Decided on the Pentair Inteliflo. Amazon had a good deal for $900. We may repipe and reconfigure our equipment eventually so the pump can be the backbone of the new system.
    We've had some Dolphins before, but this is a vacation home with a caretaker who comes a couple times a week, so we just leave the Kreepy Krawley in the water, so far no problems with this setup.

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    Mod Squad Jimrahbe's Avatar
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    Re: Variable Speed Pool Pump Questions

    Quote Originally Posted by MOConnell View Post
    Thanks all! Decided on the Pentair Inteliflo. Amazon had a good deal for $900. We may repipe and reconfigure our equipment eventually so the pump can be the backbone of the new system.
    We've had some Dolphins before, but this is a vacation home with a caretaker who comes a couple times a week, so we just leave the Kreepy Krawley in the water, so far no problems with this setup.
    MO,

    I run my Intelliflo at 1,200 RPM most of the time, 24/7, and it costs me less than $20 per month. I think you will be very happy with your new pump..

    Thanks,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Re: Variable Speed Pool Pump Questions

    Jim R, may I ask how you arrived at 1200 RPM? Is that the lowest RPM to achieve a visible GPM in your pool?


    17'x35' 22,500 gal. Gunite IGP 3.5-8.0 ft. IC60 SWG, 2 skimmers, 2 main drains, 4 returns. CCP520 cartridge filter, 3hp IntelliFlo 2 VST VSP, EasyTouch 4, ScreenLogic2, 2 IntelliBrite Color LEDs, Poolmiser autofill, UltraTemp 120R H/C 125K BTU heat pump, Diamond Brite Super Blue, No spa or water features.

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    Mod Squad Jimrahbe's Avatar
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    Re: Variable Speed Pool Pump Questions

    Miles,

    The lowest speed setting for me is determined by my SWCG. The lowest I can run my pump and still turn on the flow switch in the SWCG is about 1,100. At that speed then most of the time the flow switch works, but intermittently it will turn off. So I run my pump at 1,200 which ensures the flow switch is always closed.

    Each pool would be slightly different depending on the plumbing.

    In my case, it does not matter much, because my home pool has the Intelliflo +SVRS, so the lowest I can set the thing to run is 1,100 RPM anyway.

    At 1,200 I get just a slight ripple of movement from the returns. At that speed, my main goal is to produce chlorine and circulate the water.

    Thanks,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    CJadamec's Avatar
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    Re: Variable Speed Pool Pump Questions

    My superflo VS is very similar in rpm to Jims inteliflo I run at 1400 rpm to ensure my heat pump will run. Like jim above if I run at 1300 rpm my heat pump can cut out at times so 1400 it is for me. Just for reference my heat pump requires at least 20 gpm to operate. That speed is enough to make any pool float left in the pool do laps around the oval endlessly. All that for right around 200 watts of power usage.
    Chuck-
    15x30 AG, Pentair Superflo VS, 19" sand filter, TF-100 test kit
    Aqua Comfort ACT750 heat pump / 6x20 ground mount solar panel / DIY automation

    Photos of 2016 Build, Inside Your Breaker Panel, Free Copy of 2017 NEC code
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    Re: Variable Speed Pool Pump Questions

    Ok, got the Intelliflow in this weekend. And you all were right, it is time for the suction side Kreepy Krawley to go to maximize the low rpm benefits of the new pump. We are going to convert our suction line to a pressure line and switch to a pressure side cleaner. We plan on coupling this with a valve actuator to dedicate flow accordingly and run the pump at the lowest RPM possible for cleaning. Doing some calcs our 12 year old 1HP Pentair single speed was pulling 1800 watts, and the new pump is pulling 260w at 1500rpm and about 800 watts at 2350rpm so we should really reduce our California energy bills.

    Any recommendations for good pressure side cleaners? Do any have brushes or other cleaning mechanism besides the vacuum to help with the walls and tile? I have seen good things about the Polaris and The Pool Cleaner in my preliminary searchings.

    And being that our set-up is 12 years old it's time for the Hayward Pro-grid 60sf DE filter to be replaced. Planning on going with a straight replacement on this unit as we have had good luck with it on our 18x36 28,000 gal pool.

    Thoughts and opinions welcome... Mike

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    Mod Squad pooldv's Avatar
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    Re: Variable Speed Pool Pump Questions

    Skip suction and pressure cleaners and go for a robot. I bought the Doheny's Discovery last year and it is awesome! Way, way better than my old pressure cleaner. There is more info in my pool thread, link in sig. Also, more here, First Robotic Cleaner, Doheny's Discovery
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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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    Re: Variable Speed Pool Pump Questions

    We had a couple of Dolphin cleaners in the past, they worked well until they died.
    Trouble is this is a vacation home way out in the country and the guy who takes care of the place is no pool guy and never will be, so trying to keep it as simple as possible.
    Attached Images Attached Images
    1960 18x36 In-ground Plaster 'MacGyver' Pool
    30,000 gal with significant water loss, blue chipping tile
    Suction line installed on top of pool deck -> Pentair Intelliflo VS, 2"->
    Pentair 520 Cartridge Filter ->Pentair inline chlorinator
    Doheny Discovery Pool Robot

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