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Thread: New Pump Help

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    New Pump Help

    After just receiving my latest energy bill, I finally decided it is time to look at changing my one speed pool pump to something more efficient. I have read more websites posts than I care to count and need a little help in making an intelligent decision.
    Current SetUp
    I currently have a Hayward Super II pump, 3/4hp, 22,000 gal in ground pool with a suction cleaner (Baracuda) and SWG. I have Solar panels mounted on the roof of the house which is 10' above the pool. I currently have to close some of the valves for the solar system because there is too much pressure going to the roof. (past experience of panels bursting) Currently have the pressure reduced to 5psi at the panels. I have a DE filter, no spa or waterfall features.
    Current electric rates are $.13 to $.35kWH (average $.25kWh)
    With all that said I am looking at either Pentair or Hayward. I also briefly looked at the EcoPump, but read enough here to not go with them. Do I go with a VS or 2 Speed? If I don't need the extra Hp is it worth going to a VS? Not really sure which way to proceed.
    Thanks in advance for anyone's guidance.

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    Mod Squad jblizzle's Avatar
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    Re: New Pump Help

    With your power cost, a VS might make sense in the high tier. I think one of the newer smaller VS pumps (Maxflo VS or Superflo VS) might work well for you since you do not need the power of the bigger VS pumps.

    One concern though ... is your solar automated? Will it ever be? These small VS pumps do not integrate well into any automation, while a simple 2-speed pump can be. In my case, the automation can switch to high speed when solar is needed and stays on low when it is not.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Re: New Pump Help

    Quote Originally Posted by jblizzle View Post
    With your power cost, a VS might make sense in the high tier. I think one of the newer smaller VS pumps (Maxflo VS or Superflo VS) might work well for you since you do not need the power of the bigger VS pumps.

    One concern though ... is your solar automated? Will it ever be? These small VS pumps do not integrate well into any automation, while a simple 2-speed pump can be. In my case, the automation can switch to high speed when solar is needed and stays on low when it is not.
    Yes, my solar is controlled by a Compool (LX-220) box. As stated in my initial post, I have had the problem of too much pressure to my solar collectors. Would a small VS integrate with the Compool controller?

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    Mod Squad jblizzle's Avatar
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    Re: New Pump Help

    No, in the sense that the solar control will not change speeds.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: New Pump Help

    Quote Originally Posted by jblizzle View Post
    No, in the sense that the solar control will not change speeds.
    Ok, now I am back to being confused as to whether a 2 speed pump or a VS is better? If my solar is getting too much pressure with even my current single speed 3/4hp pump, all the 2-speeds I am seeing are rated at 1.5hp. It appears that I need to go to a VS just to get my hp down and thus my psi at the solar panels. I am leaning towards the Pentair Superflo (342000). Is that a decent choice??

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    mas985's Avatar
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    Re: New Pump Help

    Do you have a solar valve on your system? Why not just bypass some of the water around the solar system?

    Exactly what bursted on the panels? It might be an installation issue.

    Another option would be to just downsize the pump impeller. You usually do that for less than $50. It might be a better choice if you don't think you would be running on lower speeds much although a VS is nice for fine tuning the flow rate.
    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: New Pump Help

    Yes there is a solar valve on the system and I open a bypass valve to alleviate pressure directly to the panels. I replaced the panels 2 years ago because of failure at teh seams that were attributed to too much pressure. The new panels are working fine and I just have to make sure that the pressure stays in a low range. I think that the VS pump will offer the most flexibility. I think the Pentair Superflo (342000) will be my choice. Hopefully I am not missing something in the equation.
    Thanks for your input

    Quote Originally Posted by mas985 View Post
    Do you have a solar valve on your system? Why not just bypass some of the water around the solar system?

    Exactly what bursted on the panels? It might be an installation issue.

    Another option would be to just downsize the pump impeller. You usually do that for less than $50. It might be a better choice if you don't think you would be running on lower speeds much although a VS is nice for fine tuning the flow rate.

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    Mod Squad jblizzle's Avatar
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    Re: New Pump Help

    The Superflo VS programming is a little different. You can set 3 speeds, one is only available for manual selection. It will start on a high speed and after a set period of time will drop to the 2nd speed for a set period of time.

    For solar heating, you want the highest flow rate possible, so you do not want the speed changing.

    If your solar controller turns on the solar in the middle of the day, but the pump is already at a lower speed, the solar panels may not prime at all. I am just not convinced that things are going to work as well together as you might hope.

    I suppose if you dial in the set speeds to always be high enough to run the solar when the controller turns it on, it would work. But you would not be able to take advantage of the power savings by running on lower speeds when the solar was not needed.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Re: New Pump Help

    I see your point and I am very glad you mentioned it. I feel that I am back to square one in making a decision. On one hand I need the higher speed to run my solar which is on most of my pump cycle, but I would love to save some $$ on my electrical bill. Is there a good single speed 3/4 hp pump that is more energy efficient than the Hayward Super II pump I am currently using? If not I will stick with my current configuration.

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    mas985's Avatar
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    Re: New Pump Help

    Quote Originally Posted by mas985 View Post
    Another option would be to just downsize the pump impeller. You usually do that for less than $50. It might be a better choice if you don't think you would be running on lower speeds much although a VS is nice for fine tuning the flow rate.
    I don't want to sound like a broken record, but ...............
    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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    Mod Squad jblizzle's Avatar
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    Re: New Pump Help

    The only way to take the most advantage of a 2-speed (or VS speed) pump is to have a solar controller that can switch the speeds. I am not sure if your will or if there are options available to add to make it switch speeds.

    The less ideal method (which I did last year) is to just leave the pump on high speed when ever you might need solar heating (like spring - fall) and then turn the solar controller off and only run the pump on low in the fall - spring when solar would not help enough to warrant running it. So, you could save money in the winter, but not in the summer.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Re: New Pump Help

    My 2 cents,

    I have a pentair intelliflo VF (variable flow) as well as automated solar system via the pentair easytouch 8p. I can set the flow rate, for example at 40 gallons per minute, and the pump will adjust speed to maintain the flow even when the Solaris are activated. I have never experienced any pressure or prime issues. Granted, the VF pumps are expensive upfront but my system runs flawlessly and I'm saving money on my electricity bill every month.

    Bill

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    Re: New Pump Help

    Thanks for all the input. I am going to look at a new solar panel controller and then decide on the new pump configuration, probably a VS.

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