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Thread: Solar plumbing - which way?

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    Join Date
    Jun 2009
    Vero Beach, FL

    Solar plumbing - which way?

    Which is best? Top diagram, Bottom Diagram, Arrows reversed? Or does it really not matter?[attachment=0:34tblcrt]solar.gif[/attachment:34tblcrt]
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    25' x 13' Roman, 12000 gal IGP, Plaster, with 500 gal Spa
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    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: Solar plumbing - which way?

    They are basically the same and should perform about the same. If forced to choose and you are installing this on a roof then I would probably go with the second one only because the vacuum release valve is on the shortest piece of supply pipe. It will close a bit quicker and will allow you to run at slightly lower pump speeds (i.e. lower pressure) if you have a variable speed pump. But even then it will be a very small difference.

    Note too, that the return pipe could come back over the top if that is more convienent. Just don't have a local high spot or it might not full drain.
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