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hot water recirc line

bob young
bob young Member Posts: 2,177
in THE MAIN WALL
the return goes into the cold supply before the coil with a check valve , pump & aquastat and of course control valves

Comments

  • STEVEN MARKS
    STEVEN MARKS Member Posts: 154
    hot water recirc line

    New boiler installation. Existing boiler has a tankless coil with with gravity/natural convection recirc line. My question is when replacing the boiler do I tee the recirc. line into the mixed side of the tempering valve or directly from the hot side of the tankless coil. No money in job to install pump.
  • STEVEN MARKS
    STEVEN MARKS Member Posts: 154


  • STEVEN MARKS
    STEVEN MARKS Member Posts: 154


    Does this look right?
    Thanks for your help
  • bob young
    bob young Member Posts: 2,177


    could not open attach. ???
  • bob young
    bob young Member Posts: 2,177
    circ. line

    looks o.k. but i have always made the connection into the main trunk line not the branch . don't know if it matters maybe one of the other pro's will comment on that. we always use a pump & aqustat . on the cold connection to the mixing valve we drop the cold connection 27" below the inlet to form a heat sink.
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