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Thread: Hayward heater installed. Now what?

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    Join Date
    Apr 2013
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    Hayward heater installed. Now what?

    The new Hayward H100ID1 has been successfully installed and tested on a limited basis today. I have a few questions:

    1) I assume the rather low-tech thermostat runs on the principle that when it's on a low setting, the heater shuts down after the incoming pool water reaches a modest gain, and at a higher setting it continues to run until the incoming water is much warmer -- not that setting the thermostat controls the intensity of how much the water is being heated (if that makes any sense). It's either on and heating as much as it can and then off, not varying how much it is heating the water as it passes through.

    2) In theory, my pump is supposed to be flowing 50 gpm and the heater is rated for 20-70 gpm (if memory serves). Is the efficiency of the heating process at all like the solar, whereby only a certain flow rate will hit its sweet spot, much like with the solar panels, or do I just divert all the water through the heater and assume that is the most efficient way to heat the water? My pressure at the filter rose only a little more than 2 psi with the bypass valve fully closed, thus running all return water through the heater.

    3) Anything else I need to be looking for to get the most out of my Hayward heater?
    18'x4' AG Intex Ultra Frame, 6,700 gal., assembled new 2013; Mods: Hayward EC50C90 Perflex filter & 1 h.p. PowerFlo Matrix pump, Fiber Clear cellulose D.E. substitute, Hayward H100ID1 100,000 BTU NG heater, a pair of 2'x20' Sungrabber solar heaters via the original Intex 635T pump, grey Hydro Tools through-the-wall skimmer, Confer steps/ladder system & Cover Free chemical pool cover. The Summer of Mods!

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    Re: Hayward heater installed. Now what?

    The heater will heat your water until the desired temp is reached and then it will shut off. When the water cools down to a degree less than the desired temp, the heater kicks back on and heats. Provided you left the heater on and ready to heat.

    As long as the pump is pumping enough water to trigger the pressure switch to activate the heater, you're good. Push as much water thru the heater as possible.

    Have a great time swimming in warm water!
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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    Re: Hayward heater installed. Now what?

    Quote Originally Posted by CeeElGee View Post
    The new Hayward H100ID1 has been successfully installed and tested on a limited basis today. I have a few questions:

    1) I assume the rather low-tech thermostat runs on the principle that when it's on a low setting, the heater shuts down after the incoming pool water reaches a modest gain, and at a higher setting it continues to run until the incoming water is much warmer -- not that setting the thermostat controls the intensity of how much the water is being heated (if that makes any sense). It's either on and heating as much as it can and then off, not varying how much it is heating the water as it passes through.

    2) In theory, my pump is supposed to be flowing 50 gpm and the heater is rated for 20-70 gpm (if memory serves). Is the efficiency of the heating process at all like the solar, whereby only a certain flow rate will hit its sweet spot, much like with the solar panels, or do I just divert all the water through the heater and assume that is the most efficient way to heat the water? My pressure at the filter rose only a little more than 2 psi with the bypass valve fully closed, thus running all return water through the heater.

    3) Anything else I need to be looking for to get the most out of my Hayward heater?
    Did you have someone install the heater? I have purchased the same unit. Trying to add a propane tank to it.
    8000 Gallon 18' Round 52" Deep Morada Pool (Namco) DE Filter

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    Jun 2012
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    Re: Hayward heater installed. Now what?

    Hopefully you did not get the exact same one as the OP did. for propane you need an Hayward H100IDP1 to run it on propane. Do you have a question? You should start a new post as this one is almost a year old
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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