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Solar water heater pump controller.

Discussion in 'Home Power and Microgeneration' started by Mike Swift, Feb 24, 2006.

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  1. Mike Swift

    Mike Swift Guest

    Somewhere on the web I have seen a schematic for a differential
    temperature switch for controlling the pump on a solar hot water system.
    It can't be more than an op-amp and relay, but I can't find it. Does
    anyone on this newsgroup know where I can find such an animal?
    Commercial units start at about $75, and I think I could build one for
    no more than $5 with the stuff I have laying around.

    Thanks
     
  2. samc

    samc Guest

    you want the c.a.t book "solar water heating a d-i-y guide"
    isbn : 1 89804911 4
    contains p.c.b layout etc...

    some times you see a 12v kit on ebay.co.uk

    for a digital controler try this site :
    http://www.anotherurl.com/therm/Default.htm
     
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