Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Pool, In-Floor, Low Speed, etc., Running Times

  1. Back To Top    #1

    Join Date
    Feb 2012
    Location
    South Texas
    Posts
    61

    Pool, In-Floor, Low Speed, etc., Running Times

    Hey all!

    My installer setup a default schedule for the pool pumps to cycle, and I thought I'd bounce it off you guys to get your opinions. I don't know what my GPM is, unfortunately. Anyway, here's the schedule:

    7:00am to 5:00pm -- Pool Mode (2400rpm)
    5:00pm to 1:00am -- Low Speed (1750rpm)
    1:00am to 5:00am -- In-Flor runs (3000rpm)
    5:00am to 7:00am -- Low Speed again

    Thoughts? Too much? Overkill?

    The pool, so far, remains clear and bright -- but I thought I'd check with you guys!
    7000 gallons, S8M500 Filter, IG beadcrete plaster, IntelliFlo VS

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: Pool, In-Floor, Low Speed, etc., Running Times

    That seems like a lot of time in pool mode. I think you could cut that down to 2 or three hours unless there's some reason it runs during the day.
    Low speed seems too high. I think it could run about 1000 to 1200 rpm unless you need that speed to maintain a flow for a swcg, etc.
    The in-floor cleaning time seems a little too long but that's something you'd have to play with to see if it keeps the pool clean with a shorter run time.

    The best thing to do is play with the speeds and times to see what works for you. There's an article in Pool School that helps figure out run times, though not specifically for VS pumps.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,488

    Re: Pool, In-Floor, Low Speed, etc., Running Times

    I agree with Bama. That is way too much run time.

    I would combine the in-floor runs with the pool since the in-floor needs fairly high RPM. Even under the worst plumbing, your in-floor RPM would deliver close to 64 GPM which is less than an 2 hour turnover. So technically, that may be all the filtering you need for the day. The rest can be at 1000 RPM but that is just for circulation. Did you determine the in-floor RPM by trial and error?


    If you want a rough estimate on flow rates, you can use these depending on your plumbing configuration:

    Variable Speed Pump Flow Rate Approximations

    The following formulas use the affinity equations to yield a very rough estimate of flow rate.

    1.5" Return Line with 1 x 1.5" Suction Line:
    Intelliflo Flow Rate (GPM) = RPM / 47
    Plumbing Head (ft)= 0.0167 * GPM^2 - CEC Curve A

    1.5" Return Line with 2 x 1.5" Suction Lines or 1 x 2" Suction Line
    Intelliflo Flow Rate (GPM) = RPM / 44
    Plumbing Head (ft)= 0.0140 * GPM^2

    2" Return Line with 1 x 2" Suction Line
    Intelliflo Flow Rate (GPM) = RPM / 37
    Plumbing Head (ft)= 0.0093 * GPM^2

    2" Return Line with 2 x 2" Suction Lines or 1 x 2.5" Suction Line
    Intelliflo Flow Rate (GPM) = RPM / 35
    Plumbing Head (ft)= 0.0083 * GPM^2 - CEC Curve C

    2.5" Return Line with 1 x 2.5" Suction Line
    Intelliflo Flow Rate (GPM) = RPM / 34
    Plumbing Head (ft)= 0.0074 * GPM^2

    2.5" Return Line with 2 x 2.5" Suction Lines
    Intelliflo Flow Rate (GPM) = RPM / 33
    Plumbing Head (ft)= 0.0069 * GPM^2
    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

  4. Back To Top    #4

    Join Date
    Feb 2012
    Location
    South Texas
    Posts
    61

    Re: Pool, In-Floor, Low Speed, etc., Running Times

    Gotcha. Maybe I'll try:

    1:00am to 4:00am -- Pool Mode
    1:00am to 4:00am -- In-Floor (and see if that's still too long)
    4:00am to 1:00am -- Low Speed

    OR, are you guys saying I don't even need Low Speed running that long? I was thinking constant circulation would be best, but I'm at the total mercy of our pool guy until I learn from ya'll!

    Mark, the flow rates were set by the pool tech. I'll get the plumbing info from my guy and see if I can figure out the formulas...
    7000 gallons, S8M500 Filter, IG beadcrete plaster, IntelliFlo VS

  5. Back To Top    #5

    Join Date
    Feb 2012
    Location
    South Texas
    Posts
    61

    Re: Pool, In-Floor, Low Speed, etc., Running Times

    Okay, here's what I got from my pool guy...

    2.5" suction on spa
    2.5" return on spa

    2" on skimmer suction
    2.5" suction on leaf removal (bottom drain)

    Return is 2"
    Floor return is 2"
    7000 gallons, S8M500 Filter, IG beadcrete plaster, IntelliFlo VS

  6. Back To Top    #6
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,488

    Re: Pool, In-Floor, Low Speed, etc., Running Times

    I would run the in-floor cycle early in the day before you think anyone is going to swim just to get a little circulation while the sun is on the pool. Then you can run low speed while people are swimming scheduled and/or manual. Some of this is going to be trial an error to see what you actually need to keep the floor clean as well as the water.

    Your flow rate is probably around RPM / 35 but the in-floors most likely reduce it some. What is the difference in filter pressure at 3000 RPM between pool mode vs in-floor mode?
    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

Posting Permissions

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