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Thread: Stenner winterizing

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    Join Date
    Jul 2016
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    Stenner winterizing

    Hi all! I will be starting construction of a pool & spa soon in Plano TX (Dallas area). I was initially planning to go the SWG route, but have decided against it to avoid any potential issues with the limestone and travertine we will be using. I believe I would like to go with a Stenner pump and reservoir to automate chlorine dosing. In the Dallas area we do not close pools for winter, but it does get below freezing, occasionally dropping into the teens. Will I need to do anything to winterize the setup to avoid damage due to freezing? I was hoping I'd be able to use it year-round and just adjust the chlorine output based on the seasonal needs of my pool. Apologies if I've missed the answer in previous threads. Thank you to everyone who shares knowledge on this forum. I have been studying for about 2 years and have learned so much here!
    Plano TX - IG gunite pool and spa - 21k gallons - 680 sqft - Travertine paver deck, Lueders coping, pebble plaster, glass tile - Jandy iAqualink automation, VS e pump, CL580 cartridge filter, JXI 400k btu gas heater - Aqua Comfort heat/cool pump - Stenner 10gpd chlorine pump - Savi Melody LED lighting - Maytronics Active 30i robot - TF100
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    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    Re: Stenner winterizing

    The freezing point of 10% bleach is about 10F. 8.25% is a little higher and 12% is about 5F. I leave mine out all winter and have never had it freeze, so you should be fine.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Jul 2016
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    Plano Tx
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    Re: Stenner winterizing

    Thanks for the quick reply! Sounds like I should have no problem then. May stick with 10% or higher during winter for extra peace of mind.
    Plano TX - IG gunite pool and spa - 21k gallons - 680 sqft - Travertine paver deck, Lueders coping, pebble plaster, glass tile - Jandy iAqualink automation, VS e pump, CL580 cartridge filter, JXI 400k btu gas heater - Aqua Comfort heat/cool pump - Stenner 10gpd chlorine pump - Savi Melody LED lighting - Maytronics Active 30i robot - TF100
    My Build Thread

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    JoyfulNoise's Avatar
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    May 2015
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    Tucson, AZ
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    Re: Stenner winterizing

    Interesting....SWGs stop working below 60F to protect cells from damage. So most SWG owners switch over to minimal manual bleach chlorination during the winter months. Rather than leaving a tank full of bleach out all winter and tubing to "freeze/thaw", would it be possible to simply winterize the Stenner and manually add bleach? Just wondering if it makes more sense to protect the tubing, motor, tank, etc from the winter extremes.

    Last winter I think I used something like 2 gallons of 8.25% bleach the entire winter (~4 months here). I maybe had to dose the pool once every few weeks.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Re: Stenner winterizing

    I could certainly do that if I needed to, and I wouldn't mind the manual dosing, but if it is unnecessary I'll save myself the trouble. Based on the bleach freezing temperatures Bama gave, it is pretty unlikely my bleach would freeze in the Dallas area, and particularly so if I'm using higher strength bleach.
    Are you suggesting the cold temperatures alone may shorten the life of my Stenner setup, even if they are above the level of bleach freezing? I hadn't really thought of that, but I suppose that is something to consider.
    Plano TX - IG gunite pool and spa - 21k gallons - 680 sqft - Travertine paver deck, Lueders coping, pebble plaster, glass tile - Jandy iAqualink automation, VS e pump, CL580 cartridge filter, JXI 400k btu gas heater - Aqua Comfort heat/cool pump - Stenner 10gpd chlorine pump - Savi Melody LED lighting - Maytronics Active 30i robot - TF100
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    JoyfulNoise's Avatar
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    Re: Stenner winterizing

    I was merely suggesting that winter chlorine usage rates are so incredibly low that manual dosing is just as easy. I'm sure the Stenner motors, like SWG cells, are built to withstand the elements. I suppose the tubes could become less ductile in a mechanical sense as temperatures drop but I don't know that for sure.

    I was merely suggesting that winterizing a Stenner simply alleviates a potential equipment problem. Seems like evidence suggests it probably doesn't matter either way.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Jul 2016
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    Plano Tx
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    Re: Stenner winterizing

    I gotcha. You are totally right that it would be no big deal to manually dose during winter.

    If any one else has a Stenner pump and tank in DFW or a similar climate I'd love you hear if you run it year-round, and if you've had any problems doing so.
    Plano TX - IG gunite pool and spa - 21k gallons - 680 sqft - Travertine paver deck, Lueders coping, pebble plaster, glass tile - Jandy iAqualink automation, VS e pump, CL580 cartridge filter, JXI 400k btu gas heater - Aqua Comfort heat/cool pump - Stenner 10gpd chlorine pump - Savi Melody LED lighting - Maytronics Active 30i robot - TF100
    My Build Thread

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