Old 7" Baseray ratings

cchuc

Does anyone have the output ratings of the old 7" baseray system? I can find the tables for the 9A but haven't been able to find it for the 7. If no tables does anyone have a multiplier they use to adjust from the 9A tables?
thanks for any help
Chris

Tinman

Here ya go.

Bob Bona_4

Had the same question a few months ago

cchuc

Thanks for the quick reply Stephen
They show the SF/lin ft, is that the same as the steam rating (in SF) I see on the 9A table? If I compare 2.08 to the 9A ratings of 3.4 I get a ratio that the old 7" is 0.6 the rating of the 9A. My system is hot water, can I just multiply the BTU/Hr ratings in the 9A hot water table by that same ratio? Or is there something different about the steam rating that it can't be applied to the hot water ratings?
Thanks again
CHris

bob_46

Try this

Rich_49

Must be a run on buildings that have 7A in them . Just got this one from Burnham this morning .

Rich_49

And another just in from Burnham

Rich_49

Here it is

cchuc

thanks Bob and Rich. I appreciate all the help

MrCofDG

Hi Gents, anyone know what the water capacity (gallon/foot) is of 7" Base-Ray ? The 9 7/8” tall Base-Ray is 0.3 gal/foot, per the Installation Manual.

MrCofDG

My estimate of Volume of Water per Foot for 7" Base-Ray:
given the 1" diameter of each internal pipe (or horizontal 'cylinder'; I measured it 5/22/2020), then the volume of a 1-foot 'cylinder' = Pi X r x r x height (or length in this case!) => 3.1416 x 0.5" x 0.5" x 12" = 9.4248 cubic inches = 0.04 gallon in each 'cylinder', so given 2 'cylinders' in each foot of Base-Ray =>0.08 gallon per foot of Base-Ray.