Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Pump Selection and Variable Speed Question

  1. Back To Top    #1

    Join Date
    Mar 2011
    Location
    Central Florida
    Posts
    69

    Pump Selection and Variable Speed Question

    As I stated in another thread, I will be moving into a house in a few months that has an indoor pool/spa. I will most likely be replacing some of the pumps on the system this summer. Since this is a pool that is open year round, I find it very easy to justify the cost of a variable speed pump (for efficiency reasons).

    That being said, the pumps I have been considering are the Intelliflo and the EcoStar (is there another similar or better pump that someone can recommend?) It was established in a separate thread that the EcoStar has higher efficiency than the Intelliflo, which is why I am leaning toward the EcoStar. But I like to be fully informed when I make decisions (perhaps overly so..) and I was wondering if anyone could point out any other technical differences in the pumps such as materials, bearings, wet end designs, or control interfaces.

    I was also wondering exactly how these pumps do what they do as far as energy savings. Is it just a variable frequency drive that allows the pump to run at the minimum RPM required for a specific installation? Are these RPMs set up manually or do these pumps actually have the ability to sense a resistance to flow and respond accordingly?

    Thank you in advance for your responses.
    8,700 gallon IG pool (including 2000 gallon spill-over spa), WetEdge Northshore Tahoe (Satin Matrix) finish, Hayward SwimPure Plus T-15, Jandy JXi 260k propane heater, Jandy FloPro 1.5HP 2 speed pump, Jandy CS 150 cartridge filter, TF-100, Borates added, BBB is the way for me!

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Pump Selection and Variable Speed Question

    The EcoStar is in it's first model year. Other similar products have had problems in their first model year. No issues are currently know, so this may or may not be an issue.

    The EcoStar works better with different brand automation systems than the IntilliFlo. Using the IntelliFlo with anything other than Pentair automation is possible, but more complicated.

    Both of these pumps use permanent magnet motors that have a higher inherent efficiency than regular pool pump motors. That gets you about 20%. Variable speed saves you more than that, and the two together are where the dramatic savings come from.

    The wet end on the IntelliFlo is though to be better by most people, but the differences are very small.

    The EcoStar is more efficient than the IntelliFlo at the low end, where you usually spend most of your run time. The differences at higher speed are much smaller.

    The IntelliFlo VF has a flow meter, that allows you to program flow rates in addition to motor speed, none of the others do. This can be handy, but the VF costs more. The EcoStar and the IntelliFlo SVRS and VF all have timers built in, the IntelliFlo VS does not.
    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

  3. Back To Top    #3

    Join Date
    Mar 2011
    Location
    Central Florida
    Posts
    69

    Re: Pump Selection and Variable Speed Question

    Thanks for the responses Jason.
    I'll have more questions soon, I will most likely be replacing most of the components in this system, and possibly switching to SWCG if I can ease my worries of corrosion.
    8,700 gallon IG pool (including 2000 gallon spill-over spa), WetEdge Northshore Tahoe (Satin Matrix) finish, Hayward SwimPure Plus T-15, Jandy JXi 260k propane heater, Jandy FloPro 1.5HP 2 speed pump, Jandy CS 150 cartridge filter, TF-100, Borates added, BBB is the way for me!

  4. Back To Top    #4

    Join Date
    Aug 2010
    Location
    Austin, TX
    Posts
    200

    Re: Pump Selection and Variable Speed Question

    Quote Originally Posted by JasonLion
    The EcoStar is in it's first model year. Other similar products have had problems in their first model year. No issues are currently know, so this may or may not be an issue.

    The EcoStar works better with different brand automation systems than the IntilliFlo. Using the IntelliFlo with anything other than Pentair automation is possible, but more complicated.

    Both of these pumps use permanent magnet motors that have a higher inherent efficiency than regular pool pump motors. That gets you about 20%. Variable speed saves you more than that, and the two together are where the dramatic savings come from.

    The wet end on the IntelliFlo is though to be better by most people, but the differences are very small.

    The EcoStar is more efficient than the IntelliFlo at the low end, where you usually spend most of your run time. The differences at higher speed are much smaller.

    The IntelliFlo VF has a flow meter, that allows you to program flow rates in addition to motor speed, none of the others do. This can be handy, but the VF costs more. The EcoStar and the IntelliFlo SVRS and VF all have timers built in, the IntelliFlo VS does not.
    I had a pretty easy time integrating the intelliflow with a Jandy RS12 rev Q. Plug it into the RS485 bus and voila, it works and you get complete control over speed and priming. While it's running the SVRS (death by suction) functionality still works.

    One issue my plumber pointed out is that the face-plate on the IF is easy to break off







    38K Gallons IG, Intelliflow VS-SVRS, 30GPM 24/7, 72sqft DE Filter, Spectralight UV, Jandy C1900 driving Liquid Chlorine and Acid (toys, I know..), Jandy LXi gas heater, Aquacal SQ175 Heatpump, Riverflow Competition swimmer, Jandy automation, Touch and iAqualink, Pebblesheen | The Build

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •