Rating for big Kewanee boiler

Roger Litman

I recently looked at a Kewanee boiler in a building dating from about 1910, It is a Kewanee type C boiler and is about 7 feet wide and 13 feet long fired with a webster comb oil/gas burner model JB30-75EP17C.It is in a building with three floors of about 30,000 square feet each, which is approximately a square. I've been unable to get a rating for this boiler which I think is a fire tube boiler that is connected to a riser that is either eight or ten inch pipe(sorry but I didn't have a ladder). Anyone have a book that has this boiler and it's rating. I've called Kewanee and they don't know (BTW they have had over six owners) and their recommendation(Classic parts) didn't know either.

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oil-2-4-6-gas

there is a rating plate on it

there has to be a rating plate on it stating steam producing capacity --minimum relief valve capacity--and heating surface area --somewhere there will be a rating plate --or you can check on the insurance providers -inspection report (sometimes they will list the boiler horsepower) the burner max firing rate is 75 gph #2 oil -- so you are between --50gph (any less would have been the jb3-50) and 75gph (but its a Webster,you are definetly not getting max fire without a lot of smoke and maintenance issues at that rate)we have installed a number of them ---its a variable rate /modulating burner ----a guess would be 200-250 hp --just a guess though