Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Considering VSP-Water Velocity Loss?

  1. Back To Top    #1

    Join Date
    Feb 2013
    Location
    California
    Posts
    18

    Considering VSP-Water Velocity Loss?

    I'm considering installing a variable speed pump to replace my 1 3/4 motor. It works well but has a slight water leak on the bottom. I just had a large renovation of my pool. Unfortunately, I receive fall debris in my pool from trees and I love the current return velocity I get. How low will the velocity go with a VSP? Are there ways to increase it? Thanks.
    Attached Images Attached Images
    20,000 gallon IG recently re-plastered (dark), Jandy 580 Cartridge, 1 3/4 pump, Polaris 360 sweep. The pool was originally built in 1984; February 2013 underwent significant renovation. In my third home with an in-ground pool.
    Stockton, California

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

    Re: Considering VSP-Water Velocity Loss?

    A variable speed pump is variable, it can certainly match whatever water velocity you are getting now if you want it to. However, that isn't going to save you nearly as much on electricity as if you ran it at a lower speed with a lower water velocity. Water velocity is not really the important thing for cleaning up surface debris. All you really need to do that is a certain minimum flow rate and the correct return aiming to create a circulation pattern that keeps the water moving past the returns, even if slowly.
    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
    Feb 2013
    Location
    California
    Posts
    18

    Re: Considering VSP-Water Velocity Loss?

    Thanks for the information it is very helpful. I'm more concerned because my last pool, IG, plaster 15000gal, had six returns and my current pool has just three. I also plan on adding solar panels to the roof of my house to heat the pool. I just want sufficient power to operate that as well.
    20,000 gallon IG recently re-plastered (dark), Jandy 580 Cartridge, 1 3/4 pump, Polaris 360 sweep. The pool was originally built in 1984; February 2013 underwent significant renovation. In my third home with an in-ground pool.
    Stockton, California

  4. Back To Top    #4
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,482

    Re: Considering VSP-Water Velocity Loss?

    Most pools don't require much in the way of pump power. I have solar on a two story roof, 4 returns, 2 skimmers, and a main drain all run with a 1/2 HP two speed pump.

    If anything most VS pumps have more power than will ever be required for your pool but a VS can also be adjusted for nearly any flow rate to achieve optimal performance.
    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

  5. Back To Top    #5

    Join Date
    Feb 2013
    Location
    California
    Posts
    18

    Re: Considering VSP-Water Velocity Loss?

    Thank you for this positive and useful information.
    20,000 gallon IG recently re-plastered (dark), Jandy 580 Cartridge, 1 3/4 pump, Polaris 360 sweep. The pool was originally built in 1984; February 2013 underwent significant renovation. In my third home with an in-ground pool.
    Stockton, California

Posting Permissions

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