Hello, first time poster, but long time coal burner...
I have an aging, installed by my father in 1952, EFM 520 steam system that I want to replace. This furnace is of the vintage where the front cover is not hinged, but you lift it off. About 15 years ago I purchased, sight unseen, another EFM, which I believed to be a 520 but which turned out to be a larger unit that from looking on this forum, I believe is an EFM 900. The 520 is in bad shape, well, the base mostly and the sheet metal, which I understand can be repaired/replaced, but it also has some other issues. This is also a steam system and I would like to convert to hot water.
Is the 900 a good unit? I've read here and see that the set up is more complex and maybe more prone to problems than the 520. When I bought this it was converted to oil, so the coal unit, which I do have seems to have been used very little. I am considering installing this in an outbuilding and piping the heat into the house and perhaps, at least in time another outbuilding or garage, so the additional capacity might be utilized.
Any information or opinions are much appreciated and thank you in advance. Jim