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Thread: Hayward HM250 ED2 Heater - "REMOTE" wiring to Pro Logic ?

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    Hayward HM250 ED2 Heater - "REMOTE" wiring to Pro Logic ?

    New to this great site full of info.

    Question. I'm trying to "remotely" wire my old Hayward HM250 Pool Heater into my Pro Logic panel.

    Attachment 34023

    I've found plenty of manuals but nothing specific on where the terminal block is located inside the heater or a pic on what terminal posts to use on the terminal block. Further, the Hayward manual http://www.hayward-pool.com/pdf/manu...eries-Hxxx.pdf on page 19 and 20 make a vague reference to the "millivolt" heater but provide no depth of instruction/direction.

    Inside shot of panel - notice no terminal block.

    Attachment 34024

    The only thing I can potentially guess is the terminal block is behind and inside the heater somewhere. Next, once, and if there is indeed a terminal block, what terminals do I hook the wires to? If there is no terminal block inside this heater I guess I'm just SOL.

    Any experts out there that know the guts to these old heaters care to comment? Thanks

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    Re: Hayward HM250 ED2 Heater - "REMOTE" wiring to Pro Logic ?

    The Hayward ED2 and your heater are two different beasts. You could interrupt the transformer to switch wire and hook the Prologic wire between the two.
    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 HM250 ED2 Heater - "REMOTE" wiring to Pro Logic ?

    Quote Originally Posted by ps0303 View Post
    The Hayward ED2 and your heater are two different beasts. You could interrupt the transformer to switch wire and hook the Prologic wire between the two.
    Ok, I'll interrupt the TR to Pressure switch line (W wire) and run two wires to the Pro Logic panel. Looks like a pretty easy "in-series" wiring diagram.

    Done. I disconnected the wires between the two, ran two to the Pro Logic Panel and walah. Works perfect! Now I control my Heater by the Pro Logic panel...works sweet.

    IMG_0274.JPG
    Custom 12,500 IG Pebbletech pool with attached SPA (Built 1996), Cartridge Filter, Hayward EcoStar Var Speed Pump (junk after 4 yrs) REPLACED with Hayward TRISTAR Dual Speed SP32202EE, SWG Aqua T-Cell-15, Hayward Pro Logic PS-8 Pool Controller, Wireless Base Transmitter, Wireless Remote, Hayward Pool Heater HM250 (1996 manufacture date stamped), Zodiac MAX 8 Pool Cleaner

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