One-Pipe Hydronic Heating

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by techno, Feb 20, 2006.

  1. techno

    techno New Member

    Messages:
    1
    Hi, I'm installing a second zone on a hot water hydronic system with cast iron radiators. I'm using a one-pipe configuration with mono-flow tees. Is there a rule of thumb for the minimum distance between the supply and return tees on a radiator bypass? I'm using 1" copper main and 3/4" branches. Thanks very much for your help.
  2. plumber1

    plumber1 Plumber

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    Florida
    monoflo

    I believe it's at least the width of the radiation...
  3. hj

    hj Moderator & Master Plumber Staff Member

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    Cave Creek, Arizona
    tees

    Or else have an elbow between them.
  4. Bob NH

    Bob NH In the Trades

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    Here is a link to the instruction manual which describes spacing distances. There is a specified minimum of 6 ft between two different upflow risers, and the minimum distance between downflow risers is the width of the terminal unit.

    http://fhaspapp.ittind.com/literature/files/602.pdf
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