How to calculate EDR of this style radiator?

Steve Garson_2

I have many of Dan's books but need help in determining the EDR of the radiator on the attached photo. I am guessing that it should be considered a one-tube with 1.66 feet per section, but I am really clueless on this one. For one-pipe steam, circa 1915 building.

The radiators are 23-inches high and come in 30 section and 60-section versions.

Ross_7

Peerless Wall Radiator

Steve,
That looks like a Peerless wall radiator. It's in Dan's EDR book (Every Darn Radiator). It should also be listed in "The Ideal Fitter" I think that there is copy of it in the "Library", here on the website. Good luck.
Ross

Steve Garson_2

I am challenged to determine the correct EDR. Attached are the pages from the Peerless catalog. Our radiators appear to be the Model 7-B.

I have 30-tubes, so it appears to be three 7-B sections. Is the radiation 7 square feet per section x 3 = 21 square feet?

Am I reading this correctly?

Ross_7

Looks correct

Steve, that looks right. i.e. 21 sq. ft x 240= 5,040 btuh.total.

Steamhead (in transit)

Steve, on that type of radiator

each unit of two large tubes at each end and four smaller tubes in between makes one section. The sections are screwed together with right/left hand threaded nipples so it's hard to see the joints.

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Steve Garson_2

Thanks!