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Best replacement for old Crown c-247 steam boiler
Hi, I am in need of replacing a Crown C-247 steam boiler powering a single pipe steam heating system in a 10,000 square building. It is very cold here in central NY - bad timing, but it will be good replacing this very old, tired unit.
The unit fits nicely with the somewhat slightly low ceiling height (7 1/2 feet), and exhausts conveniently out a nearby basement chimney.
The input/ 600,000- output/ 480,000 btu output gas- fired boiler upon analysis seems to have been correctly sized for my rad/ pipe system.
I called Crown to order a replacement, the slightly more modern 32 series, and was told they stopped manufacturing that model last year.
My challenge is, browsing the assorted manufacturers, I am unable to choose an optimal replacement brand and model. I find choosing a model with similar btu output, somewhat primitive qualities matching my primitive system, and the most flexibility and efficiency for my particular situation difficult.
The building is a historic house in the historic district, so I am very limited in updating to a more modern system. The rads are mostly single pipe, but work pretty well, and there are about 60 of them.
I would prefer a model with the flexibility to potentially also accommodate hot water two-pipe modification at a future time, but due to the ornate complexity of the layout, the cost of this is not presently feasible. Plus, the piping and layout look like they were expertly designed by old school heat men a long time ago, and with my limited expertise, I do not wish to mess with altering this too much.
Any suggestions as to a specific brand and model currently available would be greatly appreciated.
Thanks in advance.