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lchmb Member Posts: 2,997
on a primary/secondary piping system, what is the rule of thumb for spacing between secondary zones? I know that it requires 8x pipe diameter from the 90 previous and 4x pipe diameter after the zone to a 90. Just wonder if I need that much spacing in between each zone...I have a 4 zone system and not a lot of space. Thanks



  • STEVEusaPA
    STEVEusaPA Member Posts: 6,506
    You may want to look at....

    If your short on space, consider a Hydrolink from Caleffi

  • Ironman
    Ironman Member Posts: 7,347
    edited April 2013
    None IMHO

    If the other parameters that you mentioned are properly followed, then there should be no minimum spacing requirement as is evidenced by the Caleffi manifold. The before and after spacing is to prevent the resistance/turbulence that the Ell's create from causing interference with the secondary loop. At least, that's how I understand it. Someone more knowledgeable may have better input, but I've never seen a diagram or text that mentioned it.

    Still, it wouldn't hurt to allow at least 4" spacing if you can fit it in.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • lchmb
    lchmb Member Posts: 2,997

    Didnt seem to affect the performance once done. Of course the heating season is over so next year i am sure they will let me know of any issues...
  • knotgrumpy
    knotgrumpy Member Posts: 211

    Like a nice, clean installation.

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