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Thread: IC 40 Settings To Start?

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    Join Date
    May 2015
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    kingston springs, tn
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    IC 40 Settings To Start?

    Hello - My question is does anyone have a general IC40 setting to get started?

    I live in middle Tennessee with an 18k gallon vinyl pool just installed a Pentair IC40. My water temp is still a little cool due to a few consecutive low 50's night time temps. I have the IC40 set at 40% and we are running the pool pump 10 hours a day. We had a lot of rain yesterday and this morning my chlorine was around 1. Before the rain yesterday morning it was up around 4. I understand the rain would cause a drop in chlorine overnight and the pump was not running. But if there is a general setting where I should start I would appreciate someone sharing it with me. Thanks!!

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    Long Beach, CA
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    Re: IC 40 Settings To Start?

    Raise the FC up to 5 ppm with bleach and turn up the SWG to 50%. Measure the FC everyday and adjust the % as needed until the FC is stable.

    Post your chemistry numbers so we can double check them for you.

    Here are a couple of links to read, Pool School - Salt Water Chlorine Generators, and Pool School - Water Balance for SWGs.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
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    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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    ffournier's Avatar
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    Re: IC 40 Settings To Start?

    An IC40 in a 18k pool is kinda overkill. Good for you..lol. Id probably just super chlorinate it for one or two of your pump cycles. That should do it unless your water is still in the mid to low 60's.
    25K gal saltwater gunite and Pebble Tech plus built in spa. Features-Weeping rock wall, and fountains. All Pentair equipment. Main pump- Intelliflo 4/160. Feature pump- Intelliflo 2hp single speed. Aux cleaner pump-Pentair 1hp. DE filter, Pentair heater, Glacier GCP210 pool chiller.

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    Ksnewman's Avatar
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    May 2012
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    Middle Tennessee
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    Re: IC 40 Settings To Start?

    I have found that I have to "tweak" a few times as weather changes. Living in Middle TN also, it is harder in late spring to figure exactly where it needs to be due to the inconsistent weather; however by June, things level off and I find that I can pretty well leave it alone. I only run the pump for about 5 hours a day and have the IC40 set at around 50%. When it gets into the lower 90's, I will have to jump it up. I don't think you need 10 hours a day run time. I would recommend getting a good test kit, like the ones recommended on this site and check your water chemistry yourself. You can check the FC every couple of days at first to see what setting your IC40 needs to be to keep the levels where they need to be. I think what I have learned on this site is that every pool is unique and you have to find the sweet spot for yours.
    18x36 kidney 20,000 gallons IG vinyl. Pentair Easy Touch 8 w/IntelliChlor IC40. Triton II TR100. Pentair Intellifllo Variable Speed. Waterfall/Jump Rock. 2 Pentair Intellibrite lights. TF-100 Test Kit. And a very happy husband who gets to play in the pool without having to take care of it.

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    May 2015
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    kingston springs, tn
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    Re: IC 40 Settings To Start?

    Thanks for the info. I purchased the IC40 to run it less and hopefully last longer. Currently I use the Taylor k2006 test kit I bought a couple of years ago. I purchased the Taylor salt test kit a couple of days ago and hopefully it will deliver tomorrow. It sounds like I need get a handle on the salt level and maybe these daily Tennessee tropical rainstorms will stop soon so I can find that sweet spot. I plan to work on it until I do. It is good news (energy bill) that I will be able to cut down the run time.

    One more question if I may - Is anyone using a two speed pump with the IC40 and what results have you seen? Part of me wants to get one to cut more energy cost but the flow rate may be too low to run the IC40. Then that makes the two speed not a very good idea. Cutting the run time down will probably accomplish the same thing continuing with a single speed unit. It is just myself and my wife who use the pool 95% of the time. Our grandkids live 975 miles away and they usually only visit briefly each summer. So heavy swimmer load is not usually a problem.

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    Mod Squad pooldv's Avatar
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    Re: IC 40 Settings To Start?

    A 2 speed pump will save you a lot of electricity and provide enough flow to run the IC40 on low speed. I run my VSpump at 1100rpm which draws 150 watts and is plenty of flow for my IC40, it will run down to 900rpm.
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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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    May 2015
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    kingston springs, tn
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    Re: IC 40 Settings To Start?

    Thank you that is great news! 150 watts sounds sweet!

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