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Thread: Pool Heater Confusion

  1. Back To Top    #1

    Join Date
    Jun 2014
    Sterling Heights, MI

    Pool Heater Confusion

    We purchased a pool heater with our pool and our electrician made a comment about it lacking a bypass. Is this something we need, and if so why? I will be shocked if the pool store could have sold us something and didn't!! We have not yet used the heater as we are waiting on the city inspector to come out (hopefully tomorrow) and give the green light. Which leads me to my next question...will the heater have any effect on the chemicals in the pool?
    7600 gallon AG with a Waterway Premium Blue (150 sqft) Cartridge Filter, Waterway 1/2 hp 2 speed pump. Installed on 6/25/14. Raypak 156 Heater. TF-100 Test Kit

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    wjr75's Avatar
    Join Date
    Jun 2013

    Re: Pool Heater Confusion

    The bypass we have plumbed in is a PVC pipe with a valve between the inlet and outlet of the heater. We use it to regulate the amount of water that runs through the heater verses the amount that bypasses it. We have a hot tub which is heated on demand and we found if the water goes 100% through the heater it doesn't heat as efficiently as when it is set at 50% bypass for some reason. My parents have a above ground pool with a smaller heater and it doesn't have one and everything is fine.

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    As far as chemicals make sure you keep your PH in check if you have a copper heat exchanger. If it gets really low below 7.2 you will get copper staining which I have seen on a friends pool a few years ago. I went with a cupro-nickel heat exchanger to avoid any problems incase I fall asleep at the wheel someday
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

  3. Back To Top    #3

    Join Date
    Jul 2013
    Long Island New York

    Re: Pool Heater Confusion

    I dont have a bypass on my heater and everything has been fine. I really have no idea what I am talking about but I would venture to guess that a bypass would lead to possible the heating coils lasting longer due to the fact chlorinated water is not going through them at all times. Someone that actually knows what they are talking about care to chime in? lol
    TF-100 Test Kit
    16 x 36 @26,000 Gallons Vinyl Inground Built in 2005
    Hayward Pro-Grid 4820 DE Filter
    Hayward HP-2100 Heat Pro Heat Pump
    Aquabot 4WD Cleaner

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