Steam sq ft, if not listed on steam boiler

BirchLeaf · March 2022

Is there a way to determine the steam sq. ft. of a steam boiler if it's not listed on the plate/sticker (by using other numbers listed)?
(I wrote down everything that was listed.)

ethicalpaul · March 2022

BTU can be converted. Send a pic of the panel?

BirchLeaf · March 2022

@ethicalpaul
The boiler is gone (didn't take pic.) I wrote everything down, though.
Input BTU per hr.: 112,500
Heating capacity BTU/hr.: 90,000

pecmsg · March 2022

Are you looking at a Boiler or a Steamer ?

BirchLeaf · March 2022

@pecmsg
It was a natural gas-fired steam boiler.

KC_Jones · March 2022

Is this the same boiler from your other thread that you listed as rated for 321 sq ft?

SteamingatMohawk · March 2022

p. 78 of Lost Art:

EDR/4 = Lb/Hr

BTU/Hr/960 = Lb/Hr

EDR/4 = BTU/HR/960

EDR = 4 * (BTU/HR/960) = BTU/HR/240

90,000/240 = 375 EDR

My math teacher always made me show my work.

BirchLeaf · March 2022

@KC_Jones
It's the OLD boiler that I'm trying to figure out sq ft of steam.
(The NEW one is 321 sq. ft. steam.)

Steamhead · March 2022

BirchLeaf said:
@ethicalpaul
The boiler is gone (didn't take pic.) I wrote everything down, though.
Input BTU per hr.: 112,500
Heating capacity BTU/hr.: 90,000

If this is a Utica, Columbia or one of the Dunkirk boilers that might have any one of several names, it's 281 to 292 square feet.

KC_Jones · March 2022

With the 90,000 that would be with pick up factor, so the actual rating would have been what Steamhead said @281 sq ft

90,000=375 EDR
375/1.33=281

BirchLeaf · March 2022

You guys are amazing. Thank you all so much!
@Steamhead You're right! Certified by Dunkirk Radiator Corp. It said installed in 1985, it ran wonderfully, I loved it, and I bet it could have been repaired.

SteamingatMohawk · March 2022

@KC_Jones Thanks for the "adjustment". I was just doing the simple math.

Steam sq ft, if not listed on steam boiler

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