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Thread: Need recommendations for pump/heater efficiency

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    schurtj's Avatar
    Join Date
    Jan 2014
    Reynoldsburg, Ohio

    Need recommendations for pump/heater efficiency

    This is such a great forum and I appreciate the input. I have been recently toying with the idea of installing an antique coal/woodburning boiler on my plumbing loop. The thing that worries me is that I have 2" pvc pipe on the loop, and the boiler input/output is a 1". I am not sure what type of harm or stress (if any) ,that I would be putting on the system have all the flow go from 2", to 1" and back to 2" again. My other option would be to feed the boiler from a branch line, but then not all of my water is being heated. I would like to just send all the water through the boiler. Any thoughts on this?

    For what it's worth, I have a Hayward Super pump, a 300lb StaRite Crystal Flow sand filter, a gas heater, and then back to the 4 returns. The pool is 18x36 inground with one floor drain and 2 skimmers.
    22,750 gallon in-ground Vinyl Liner (1 main, 2 skimmers, 5 returns) 16x38 from 4' to 9'
    1hp A.O. Smith coupled to Hayward Superpump 52gpm
    300 lb Sta-Rite Crystal-Flo sand filter
    Hayward Comfortzone gas heater
    Manual Pool Vacuum (yes seriously)

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

    Re: Need recommendations for pump/heater efficiency

    Welcome to TFP!

    You should almost certainly split the line and have some of the water bypass the boiler. The boiler most likely has a maximum flow rate well below your total flow rate. It wouldn't be difficult to make the flow rate on the bypass adjustable so you can fine tune the system later.
    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

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