Sunrad EDR

eclark

Bought a house last year that has mostly Sunrad (or sunrad style) radiators.  I'm just trying to see how many EDR for the units, but can't find any guidance.  Anybody know where I can get it?



Thanks,

Eric

Paul48

Try This

Go to the section "Sizing radiation for steam boilers" http://www.comfort-calc.net/Steam%20Information.html

crash2009

There are

There are 2 sizes to choose from in this pdf from the library here. 

M 5X20 is 2.25 EDR per section,

M 7.25X23 is 3.40 EDR per section

http://www.heatinghelp.com/files/articles/928/299.pdf

Mark N

Sunrad

www.heatinghelp.com/article/158/Radiators/1259/American-Standard-Radiators-and-Convectors

Hap_Hazzard

The American Standard Catalog

gives those ratings as 2.0 ft.² and 3.0 ft.² EDR, respectively. I wonder why there's a discrepancy?

eclark

Thanks guys

Reason I ask is because when we moved in, there were two places where radiators had been disconnected and removed.  I have no idea why.  If I find out that I've got only 275 SF of EDR installed but that my boiler has capacity for 360, I can reinstall those radiators without compromising the system, right?

Paul48

Heat Loss

Not only will it not adversely affect the system, if you do a heat loss of the areas they've been removed, you will probably discover they're needed.