Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 11 of 11

Thread: getting cold in the valley...any worry?

  1. Back To Top    #1
    tedinelkgrove's Avatar
    Join Date
    Jul 2009
    Location
    Elk Grove, CA
    Posts
    98

    getting cold in the valley...any worry?

    So the NWA is predicting temps to fall in upper 20s tonight with snow on the valley floor on Monday. Very unusual for Sacto and surrounding area. Should I take an precautionary measures to protect the pool against the low temps? It is uncovered and the pump is running 4 hrs/day (2 in am; 2 in pm). Besides approaching weather, the pool is crystal clear and clean.
    ~15000 gallon inground, plaster pool
    Jandy CL460 Cartridge Filter Tank, Jandy Stealth SHPF 1.5hp pump, Pentair Legend II cleaner
    Leslie's DPD Complete Test Kit, TF Tests FAS-DPD Chlorine Test Kit
    Heliocol solar pool heating (HC-40 x6)

  2. Back To Top    #2

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,401

    Re: getting cold in the valley...any worry?

    It would be quite surprising to see any ice form on a 15k pool @ 28 degrees but, if it will help your comfort level, just run the pump on when you go to bed and then shut it off after the sun is up tomorrow.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: getting cold in the valley...any worry?

    BE SURE TO RUN THE PUMP WHEN THE TEMPS ARE BELOW ~30* !! This will keep the pipes from freezing




    {Jeez, Dave is fast on the keyboard }
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  4. Back To Top    #4
    polyvue's Avatar
    Join Date
    Aug 2009
    Location
    Sacramento, California USA
    Posts
    1,215

    Re: getting cold in the valley...any worry?

    Quote Originally Posted by tedinelkgrove
    So the NWA is predicting temps to fall in upper 20s tonight with snow on the valley floor on Monday. Very unusual for Sacto and surrounding area. Should I take an precautionary measures to protect the pool against the low temps? It is uncovered and the pump is running 4 hrs/day (2 in am; 2 in pm). Besides approaching weather, the pool is crystal clear and clean.
    Why do you listen to such silly rumors? I'll bet that they're mistaking Celsius for Farenheit! The overnight low is actually going to be 80°F... take my word for it.

    In the unlikely event that those meterologist/astrologers are correct, follow the wisdom dispensed above from those abiding on the colder side of the continent... Still, I'm holding out for 80 degrees (nevermind my frozen digits that are still thawing out after a trip to the pool this morning for testing.)
    14,555 gal in-ground 16'x29' white plaster Pool w/spa (2007); Goldline Aqua Logic AQL-PS-8 control w/Aqua Cell 15 Salt Water Chlorination (SWCG); Hayward TriStar 1HP (1.85 SF) main / 1.5HP (1.60 SF) spa pumps; Hayward Swimclear cart filter C4025, ColorLogic LED lights; Tankless SP-18-4 electric heater; Polaris 280 cleaner.
    __
    View of spiral galaxy in Ursa Major NGC6217 - Hubble Telescope 2009

  5. Back To Top    #5
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    9,912

    Re: getting cold in the valley...any worry?

    I live fairly close by and in the winter sometimes experience below freezing temperatures of at most 4-6 hours in duration but for the last 3 years, I have not used freeze protection. Minimum temperatures hardly ever go below 28 degrees and at that temperature, it would take a very long time for the water to freeze in the pipes. Generally, you will need much more time and/or much lower temperatures before the water will freeze solid and expand enough to rupture the pipes.
    Mark
    Hydraulics 101; Pump Ed 101; Pump and Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater, ThePoolCleaner

  6. Back To Top    #6

    Join Date
    Jan 2009
    Location
    Cupertino, CA
    Posts
    1,966

    Re: getting cold in the valley...any worry?

    With an inground, most piping is belowground and it will take more than an overnight frost to penetrate. Yes the bits that are aboveground are more vulnerable, but still... pure water freezes at 32F, but pool water is not pure.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

  7. Back To Top    #7
    polyvue's Avatar
    Join Date
    Aug 2009
    Location
    Sacramento, California USA
    Posts
    1,215

    Re: getting cold in the valley...any worry?

    They're predicting snow flurries in the Sacramento valley during the morning hours, with accumulations of up to 4" in the hills only 5 miles away and a thousand feet higher in elevation... all the more reason for denial. The last time I remember snow here was in January 1990 on the floating dock at Old Sacramento. The flakes came down thick for almost a minute, stuck for another two, then went the way of imagination; the clouds were replaced immediately with a brilliant star field and I was left with only a memory of childhood blizzards and March slush.

    14,555 gal in-ground 16'x29' white plaster Pool w/spa (2007); Goldline Aqua Logic AQL-PS-8 control w/Aqua Cell 15 Salt Water Chlorination (SWCG); Hayward TriStar 1HP (1.85 SF) main / 1.5HP (1.60 SF) spa pumps; Hayward Swimclear cart filter C4025, ColorLogic LED lights; Tankless SP-18-4 electric heater; Polaris 280 cleaner.
    __
    View of spiral galaxy in Ursa Major NGC6217 - Hubble Telescope 2009

  8. Back To Top    #8
    tedinelkgrove's Avatar
    Join Date
    Jul 2009
    Location
    Elk Grove, CA
    Posts
    98

    Re: getting cold in the valley...any worry?

    It appears my pump has a mind of its own; the pump is running outside of the programmed run time. I turned on the PDA and it toggles back and forth between the main menu and message stating "Freeze Protect Filter Pump." According to the PDA The water temp is 47 and air temp is 35. I guess 35 is the temp which triggers freeze protect mode?
    ~15000 gallon inground, plaster pool
    Jandy CL460 Cartridge Filter Tank, Jandy Stealth SHPF 1.5hp pump, Pentair Legend II cleaner
    Leslie's DPD Complete Test Kit, TF Tests FAS-DPD Chlorine Test Kit
    Heliocol solar pool heating (HC-40 x6)

  9. Back To Top    #9
    polyvue's Avatar
    Join Date
    Aug 2009
    Location
    Sacramento, California USA
    Posts
    1,215

    Re: getting cold in the valley...any worry?

    Quote Originally Posted by tedinelkgrove
    It appears my pump has a mind of its own; the pump is running outside of the programmed run time. I turned on the PDA and it toggles back and forth between the main menu and message stating "Freeze Protect Filter Pump." According to the PDA The water temp is 47 and air temp is 35. I guess 35 is the temp which triggers freeze protect mode?
    Same behavior as my Goldline Aqualogic PS-8 controller... tonight it switched on at 8 pm when the temp reached the trigger point I set (34° F.) so it's been cycling back and forth, 15 minutes each, between pool and spa filtering. Yes, 34 degrees at 8:00 PM!! (A collective cry goes up from those North-Western Minnesotans... "What will those poor dearies do?!")

    The system allows a set point of 34-44 degrees, but nothing lower. I've a mind to shut the dam* thing off tonight. Just uses up electricity, IMO.
    14,555 gal in-ground 16'x29' white plaster Pool w/spa (2007); Goldline Aqua Logic AQL-PS-8 control w/Aqua Cell 15 Salt Water Chlorination (SWCG); Hayward TriStar 1HP (1.85 SF) main / 1.5HP (1.60 SF) spa pumps; Hayward Swimclear cart filter C4025, ColorLogic LED lights; Tankless SP-18-4 electric heater; Polaris 280 cleaner.
    __
    View of spiral galaxy in Ursa Major NGC6217 - Hubble Telescope 2009

  10. Back To Top    #10

    Join Date
    Jan 2009
    Location
    Cupertino, CA
    Posts
    1,966

    Re: getting cold in the valley...any worry?

    TV weather just told me Santa Clara Valley could dip below 20F tonight, and made noises about protecting exposed pipes. This is when a two-speed would've been a great idea... guess I'll go turn the pump back on for the night, grumpy as it makes me.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

  11. Back To Top    #11

    Join Date
    Apr 2007
    Location
    Northern CA
    Posts
    18

    Re: getting cold in the valley...any worry?

    Here it is Jan and I thought all my pool equipment survived the winter freeze!...Not.

    I noticed the other day that my auto-fill vacuum breaker (Wilkins 420 Pressure Vacuum Breaker 3/4") was spitting a small stream of water.

    I searched for a freeze repair kit (RK12-420FK) online and they are relatively easily found ~ $40 - $50 + shipping (Ebay and Amazon), but I found one local for $18 at Ewing Irrigation in Roseville CA. This is by far the cheapest I have found this kit.

    The Ewing Irrigation part number is 11020490.

    Anyway hope this helps someone.

    BTW Ewing Irrigation http://www.ewing1.com/ is nationwide.
    34'X 15' 3'-8' depth 22,000 gallon in-ground Grecian style built July of 2004, Blue Tahoe PebbleSheen, Poolpilot DIG-220 w/SC-60 SWCG, Pentair WFE-4 1HP filter pump, 6' S/S Waterfall and WFEDS-6 2 spd Waterfall pump, Letro Legend Platinum cleaner w/LA01N pump, Sta-Rite DE filter S8D110 53 sq. ft., 648 sq ft. East facing Solar panels w/Pentair LX 220 solar control, 6' Pewter Gray SR Smith Glas-Hide dive board on black powder coated cantilever stand w/SS hardware

Posting Permissions

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