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Max suggested EDR based on pipe size?

TK03
TK03 Member Posts: 54
in THE MAIN WALL
One pipe steam risers to rads are as follows;
1" - 25EDR
1-1/4" - 55 EDR
1-1/.2" - 85 EDR
2" - 150 EDR
Horizontal travel in excess of 10' increase one pipe size
Horizontal travel sloped down and dripped decrease one size.
Page 3 of Burnham's heating helper
McSteamer22

Comments

  • Pete_18
    Pete_18 Member Posts: 197
    1-pipe steam 1 1/4 inch & 1 inch pipes

    I have both a 1 1/4 inch pipe and a 1 inch pipe cut in to my main that I am thinking of putting back in to use by adding some radiators where someone removed them 30 years ago.

    Is there a recommended max EDR that would work effectively for 1-pipe steam given these pipe sizes?

    How about a 1 1/2 inch?
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