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Pipe Sizing

EJW
EJW Member Posts: 321
in THE MAIN WALL
Can anyone tell me the maximum btu load of 3/4 copper?

Comments

  • Robert O'Connor_6
    Robert O'Connor_6 Member Posts: 299
    If

    your working with a 20 degree delta T about 55 mbh.

    Regards

    Robert

    Me
  • EJW
    EJW Member Posts: 321
    Sizing

    Yes it is a Delta of 20. Thank you sir, EJW
  • Glenn Harrison_2
    Glenn Harrison_2 Member Posts: 845
    EJW,

    This may be of help to you for the future.

    By the way, 3/4" is good for 40,000 btu's, 4 gpm @ 20° ∆T
  • Robert O'Connor_6
    Robert O'Connor_6 Member Posts: 299
    Figure i

    gave was for 5.5 gpm and the question was about maximum capacity.

    I'd be more comfortable designing for 4gpm at 40 mbh.

    My data was from Weil Mclean and the chart has never failed me!


    Regards

    Robert
  • Glenn Harrison_2
    Glenn Harrison_2 Member Posts: 845
    That's interesting, Robert,

    Your Weil Mclain sheet says 5.5 max, and the B&G says max 4.0, and I believe Dan's books show 4.0/40,000 btu's also. I'm curious how W.M. came up with 5.5.
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,601
    I also wrote

    Zoning Made Easy for B&G. My numbers are based on B&G's System Syzer, developed by my old teacher, Gil Carlson.
    Retired and loving it.
  • Glenn Harrison_2
    Glenn Harrison_2 Member Posts: 845
    Wow,

    that means I've been carrying a Dan Holohan book around with me for over 10 years and didn't even know it. :)

    Thanks, Dan. I had no idea you wrote that.
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