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Thread: Underground hose placement question

  1. Back To Top    #1

    Join Date
    May 2008
    Location
    Fort Gratiot MI
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    66

    Underground hose placement question

    Hi everyone,

    I have a 24 ft round 52" deep Doughboy with a 1hp pump (Doughboy also) with a Silica II filter, and a 180,000 btu Raypak heater.

    I was wondering, am I going to lose alot of heat running the lines underground? Also am I going to put too much strain on the pump, and should I get a larger pump if so?

    I am running 1 1/2 dia spaflex hose. The run is about 20ft underground. Then above ground I'm using 1 1/2" clear vinyl from the spaflex to the equipment.


    The reason I want to run the lines to the return and skimmer is my heater. I want to keep it close to the house so that I dont have to pay a plumber $300.00 to run a 20ft piece of underground gas line. This way I can run the gas line myself and when it shots out from the crawl space through the block it will come up and go right into the heater.

    Thanks
    Brian
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    You won't lose a significant amount of heat to the pipes. Most of the heat is lost to evaporation.

    The extra pipe will cause more dynamic head and so reduce the flow rate. That pump should be able to handle it, but you won't get as much flow as you had before.
    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
    May 2008
    Location
    Fort Gratiot MI
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    Im curious, my pressure went up in my filter pressure gauge from 12 to 14psi once I moved the filter and pump to its new location. Why did the pressure raise up like that?

    Thanks
    Brian
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887
    The extra pipe length causes more dynamic head, resistance to flow. That results in higher filter pressure.
    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

  5. Back To Top    #5

    Join Date
    May 2008
    Location
    Fort Gratiot MI
    Posts
    66
    ok thanks Jason I appreciate the info!

    Brian
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

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