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Boiler Bypass Location

Bruce M.
Bruce M. Member Posts: 143
in THE MAIN WALL
Should the bypass be above or below the circulator on the supply line?

Comments

  • Big Ed
    Big Ed Member Posts: 1,117
    By pass

    For boiler protection after the circulator , for system temperment before the circulator..
  • Bruce M.
    Bruce M. Member Posts: 143


    In a 3 zone, 3 circulator system where would the bypass be located. Above which circulator or doesn't it make any difference?
  • Big Ed
    Big Ed Member Posts: 1,117
    By pass

    It depends, explain system and purpose of by-pass.
  • Bruce M.
    Bruce M. Member Posts: 143
    Purpose is to prevent thermal shock to boiler

    by having water that is too cool enter the system. System is a low mass cast iron Biasi with a 3.8 gal water content. System is in a split level with each level a diferent zone. Slant fin 30 baseboard installed with 4 baseboard units on each floor. Heat loss calculation of 37,663 BTU/hr using the Slant Fin program.
  • Jed_2
    Jed_2 Member Posts: 781
    You don't need a bypass(NM)

  • Big Ed
    Big Ed Member Posts: 1,117
    Instructions

    Read Biasi instructions, you don't have high mass radiation .If they insist pipe it Primary Secondary piping. Dan sells a book on the subjuct.

    Jed mentioned you don.t need one. I myself is not familiar with a Biasi .
  • kevin coppinger_4
    kevin coppinger_4 Member Posts: 2,124
    it would be...

    overkill to install a bypass...and if you insist you would need one after each circulator. You could use zone valves for such a small system and be fine. kpc

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