Sizing Calculation - HELP - Gurus, Steamhead, Everybody.

AJ1

I am HO in the midst of a oil to gas conversion. This is an old house with Steam radiators. The current furnace is oil and its VERY old and working beautifully with AFG Beckett burner.

The ONLY reason for the conversion:

1. Savings in heating cost.Gas is at 1.16 CCF here.Oil is 3.50/Gal.



I need help sizing the new gas steam boiler.



The following are my radiator sizes.





Width of each column on "Old Radiator" = 3.5 inches



26" * 11 (Sections) * 2 Columns ("old radiator style"..see attached pic)









22" * 11 (Sections) * 2 Columns ("old radiator style"..see attached pic)







22" * 11 (Sections) * 2 Columns ("old radiator style"..see attached pic)







36" * 6

(Sections) * 2 Columns ("old radiator style"..see attached pic)







36" * 6 (Sections) * 2

Columns ("old radiator style"..see attached pic)







36" * 6 (Sections) * 2 Columns ("old radiator style"..see attached pic)







25" * 6 (section) * 4 Tubes ("new radiator style"..see attached pic)







25" * 10 (section) * 4

Tubes ("new radiator style"..see attached pic)







25" * 10 (section) * 4 Tubes ("new radiator style"..see attached pic)





Wall radiator dimension is 29 inches  Length * 22 Inches

High * 6 inches deep...







Total 10 Radiators.I have measured the height from the floor to

the top of the Radiator.



Per my calculation the total SQF of steam is 292.53 NOT adding the equalization factor.



<a href="https://docs.google.com/spreadsheet/ccc?key=0AoRHjdMocm80dHBTWmJIWXJTMlpBaEFmQXI1UUQyOXc&authkey=CMKSstAJ&hl=en_US&authkey=CMKSstAJ">https://docs.google.com/spreadsheet/ccc?key=0AoRHjdMocm80dHBTWmJIWXJTMlpBaEFmQXI1UUQyOXc&authkey=CMKSstAJ&hl=en_US&authkey=CMKSstAJ</a>



My old and new radiator pics are here.



I am looking into this crown boiler.

<a href="http://www.crownboiler.com/Products/Residential-Boilers/Residential-Gas/Bermuda_BSI">http://www.crownboiler.com/Products/Residential-Boilers/Residential-Gas/Bermuda_BSI</a>



My installer is sizing it to BSI103 (click product ratings). Per my calculation it is undersized. Am I wrong?



Please help.

Steamhead

Those older rads

are not standard 2-column units. They look like H.B. Smith ones, possibly the "Princess" model, and their ratings are different from standard 2-column rads. If you have a copy of Dan's book "E.D.R.", you can find the charts there.

AJ1

Can you hepl size it...I dont have the book...

Thanks steamhead....I dont have the book.

Would you be kind enough to spare some time and let me know how much off I am in my calculation.

The original boiler is has this stamped on it "Internatinal Boiler company boiler model S53 uthica NY".

Steamhead

Don't have mine with me

I'll see if I can find it..........

AJ1

any update..

steamhead were you able to open the attached xls sheet...