I would like your input. I heat with coal, pressure system, 1250 gal. storage and on and on. Boiler though is hand fed and things change. There was a sharing of feeding boiler, preety easy. Now just me! I intend to add new boiler via a water to water exchanger as they are all no pressure type.
I use sub-bit. Pretty good stuff, low moisture (7.5%) very low sulpher, ash about 7%. About 11,600 BTU/Lb. and $44 a metric tonne oiled.
There are three reasonably close stoker/boiler manufacturers. Legend (Reimer Welding), Coalman and Homesteader (Heat Innovations) and ML30 (Portage and Main). I am leaning towards the Coalman or Legend. The Legend looks to be quite efficient (28 spiral tubes), but needs at least weekly attention, Coalman probably just as good and has completly automated stoker and ash removal.
I would really like to hear from anyone who has knowledge or experience with any of above. Longevity is #1, little bit of work is #2. They are all designed for Bit and Sub-Bit, that seems to be the only choices.