Sizing cast iron convectors in the basement ductwork

Chris Nichols

Dan, I am sizing for a new steam boiler here in Philly, and I cannot find any sizing guides for what I call cast iron convectors. They look like cast iron boiler blocks inside of ductwork, feeding by gravity to the first floor. At first I thought to just size them as close as I could, with normal radiator sizing guides. But, I was thinking, since copper convectors increase in output, just by increasing the height of their cabinet, I might need to assume the same with these. I checked in my copies of The Lost Art and the Lost Art Companion and cant find any help. I would hate to undersize this boiler. I would appreciate any guidance you might have. Thanks, Chris

bob young

e.d.r. rating book

Dan's edr book has some in & you can probably work with those even if they are not exact.. ya gotta start somewhere. best of luck on your project

Chris Nichols

Thanks, yes I just saw (and ordered!) that book. I was just hoping for a little more urgent help....as these people have no heat, and they are the GOOD type of customer. Chris

Steamhead (in transit)

There are some in the Library too

try this link:

http://www.heatinghelp.com/pdfs/92.pdf

Have you been able to determine who made these "indirect radiators"?

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