Indirect radiators

Jim Pompetti

found in basements,usually covered in wood and ducted to the outside . Of course no longer ducted outside . The EDR is usually noted by the size of the feed . Anyone know the edr of 1 1/2 & 1 1/4 pipe 

Unknown

EDRs

Jim - The following are EDR capacity for1 pipe steam laterals:

 1-1/4" - 55 EDR



 1-1/2" - 85 EDR



Taken from Page 3 of the Burnham Heating Helper. I 've attached a copy.

- Rod