Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Piping Maximum Sq.ft EDR Capacity Question

Randy Berg_3
Randy Berg_3 Member Posts: 5
in THE MAIN WALL
What is the maximum sqft EDR capacity for a 11/2" blk pipe used as a horizontal main in a two pipe steam system? All of the charts that I can find goes only down to 2".

Comments

  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,610
    Typically,

    2" was the minimum sized used for this application.
    Retired and loving it.
  • Randy Berg_3
    Randy Berg_3 Member Posts: 5


    Dan, this is a old two pipe air vent system, the mains from the header is 11/2".
  • Randy Berg_3
    Randy Berg_3 Member Posts: 5


    This system was installed in 1947.
  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,610
    When I put my books together

    I couldn't find any charts from any of the Deadmen books that showed lower than 2". I still haven't found any. Wish I could put a number on it.
    Retired and loving it.
  • Randy Berg_3
    Randy Berg_3 Member Posts: 5


    Dan, It seems that this was the system of choice in this area at the time. There are many of these systems piped the same way, and from what I have been told was installed by the same plumber, which is not alive. This is a two pipe air vent system with Young and Trane convectors. The headers off the boilers are 3" then are reduced to 11/2" mains. The systems do have a main vent on both mains also vents on all convectors. With the help of your book EDR I came up with a total SqFt. EDR of 235 Sq.ft EDR. As you have stasted in your books there is always some new twist on these systems. The systems work great.
This discussion has been closed.

Categories