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Thread: Freeze protection and heating spa

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    Join Date
    Jun 2014
    Location
    Frisco, Tx
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    36

    Freeze protection and heating spa

    Can someone help me with my dilemma? I have a Pentair Intelliflo pump (as well as a cleaner booster pump) that feeds my pool/spa combo. The freeze protection (to protect the pump) kicks on at 35 degrees Fahrenheit. That sends water through the system (including through a spa return that spills into the pool). Lately we've had a lot of temps down below 36 degrees and it lasts for days. Anytime that happens I can't heat my spa because the valves default to the pool setting. Sometimes we're actually in the spa when it starts pumping 40 degree pool water in.

    My questions are 1) Do I need to keep water running through the pool plumbing (including two wall mounted scuppers) to keep the pipes/pool from freezing? And 2) if not, can I switch the auto valves so that when the freeze protection kicks on it only circulates through the spa system and then I can turn the heat on. This would cut off all the pool plumbing and water features but I got the spa in large part for winter use of the pool. It seems every night and many days the temps are too low to enjoy it. Finally, if doing this is acceptable, how do I position the Jandy auto valve switches to make it happen? Do I just flip them to the opposite positions?

    Thanks
    39 x 16 freeform in-ground gunite, QuartzBrite Midnight Blue finish, 3.5 x 5 x 7, 21,435 gal, 18" elevated spa 8' diameter, 2 Hp Pentair Intelliflo VS-SVGR pump, Pentair Clean and Clear 420 filter, Pentair Mastertemp 400k BTU heater, 320 In-line chlorinator, Paramount O3 Ozonator, ScreenLogic II Controller, Polaris 280 cleaner

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: Freeze protection and heating spa

    There are several different things to understand here.

    First, lows in the 30s are not going to cause freeze damage. It needs to get down into the low 20s for several hours or the mid 20s for days before you are going to have freeze damage.

    Second freeze protection does what it does, some run in spillover, some alternate between pool mode and spa mode. Whichever yours does, there is no way to change it other than to disable freeze protection completely.

    Third, running the pump to circulate water is one way to prevent freeze damage, winterizing is another, tenting the equipment with an incandescent light bulb for heat is a third. If the temperatures are getting into the 20s you need to do something. While lows in the 30s you can ignore it.

    So you have several options, but none of them match up with the way you asked the question. You could winterize the pool and lock the freeze protection to spa mode only. But you can't just ignore the pool plumbing (unless the temperatures are never getting cold enough).
    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
    Jun 2014
    Location
    Frisco, Tx
    Posts
    36

    Re: Freeze protection and heating spa

    Thanks. I understand what you're saying.
    39 x 16 freeform in-ground gunite, QuartzBrite Midnight Blue finish, 3.5 x 5 x 7, 21,435 gal, 18" elevated spa 8' diameter, 2 Hp Pentair Intelliflo VS-SVGR pump, Pentair Clean and Clear 420 filter, Pentair Mastertemp 400k BTU heater, 320 In-line chlorinator, Paramount O3 Ozonator, ScreenLogic II Controller, Polaris 280 cleaner

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    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
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    15,001

    Re: Freeze protection and heating spa

    Hey Afluv,

    I'm in Miland with pretty much the same weather. At least for this season we are pretty well out of the woods now. We can expect the usual Easter frost, but I think our worries of freeze damage are behind us. I had one power outage scare this season, so I'm thinking about some plans for that next year. Coming through one with Sub 25 temps was a little scary but we made it through ok.
    TFP Moderator
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    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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