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I recently condemned an old bryant steam boiler model# 244 - 7. The boiler has in input of 450000 BTUs and an output of 360000 BTUs.
There are 22 radiators, 18 column style radiators + 4 indirect floor radiators.
I measured the system EDR to be 1500 square feet of steam. Looking around the building the piping is still very well-insulated.
I've been looking at boilers for 3 days and getting pricing. Luckily nobody is living in the home at the moment because every boiler is 2-3 weeks out.
All the boilers I'm looking at that are capable of producing 1500 square feet of steam have a gas input around 650000 BTUs and a output of around 580000.
I converted the btu output off the old boiler to tell me how much Steam the Bryant boiler was making and I found it to be 1500 square feet.
So I have couple questions about picking the new boiler.
Do I want to install the boiler that is 200000 BTUs more than the old one? I know that 200000 BTUs is my hidden 33% pickup Factor. It just seems like a lot of added capacity considering how well insulated everything is.
And my second question is what boiler would you recommend? I was liking the weil McLain LGB - 6, I just don't like how it only has 1 Supply tapping off the side and it's a 6-inch tapping, so I would feel it necessary to make the entire header 6 inch.
Any recommendations would be greatly appreciated.