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variable frequency speed control

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eleft_4
eleft_4 Member Posts: 509
in THE MAIN WALL
I think I read an article in PM mag. that Honeywell was coming out with a stand alone variable frequency speed control for circulators in 1997. This was to be an import item. Did they or anyone else start marketing them? The Opus incorporates this in there controls in place of a boiler bypass set up. I would like to do the same.


al

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  • Mike Kraft
    Mike Kraft Member Posts: 406
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    Peek @ this eleft

    I havent tried one..........yet

    cheese

    http://www.grundfos-www.com/alpha/frames_html.htm
  • eleft_4
    eleft_4 Member Posts: 509
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    Peek@

    Cheese,

    Went to site, these pumps are controlled by pressure or volume.

    I want to control the pump with the return temp to the boiler. Boiler protection, if you will. This system has only one pump for the main loop with four zone valves at the boiler return.

    Keep thinking, I need the info

    thanks

    al
  • Gary Fereday
    Gary Fereday Member Posts: 427
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    Not sure

    but could Tekmar have the solution! seems to me that you could use the system that uses an injector pump (without the injector pump) to control the speed of the pump! Just thinking out loud! bigugh
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