If you are comfortable doing basic automotive repair, you can maintain and service a stoker. In my earlier response I didn't mean to imply that it was too difficult for most technicians, but the fact is that very few HVAC guys have experience with coal and when they hear that word, they automatically refuse to work on it. Anyone that can thread pipe or sweat copper can handle the "wet side" of things, but they do need to follow the company's guidelines for piping. Controls are very similar to an oil unit, if they can follow a wiring diagram they will do fine. Properly adjusting the fire does require some judgement, but the EFM manual and this forum has good instructions. Speaking of the manual...I have lost count of the number of people that come on this forum with issues that are completely correctable by simply following the manual's instructions. Read the manual, ask questions, use common sense...and you will do fine.NJJoe wrote:I would tend to agree with you. I'm basing this primarily off of the EFM 520 boiler (the boiler that I like the most after considering my options and the one I will probably install) and it does seem like a pretty straight-forward boiler with mechanical controls that are understandable. I don't have a 520 but through reading this forum, reading the manuals and viewing youtube videos I think I have a reasonable understanding of it.Richard S. wrote:Fortunately there isn't a whole lot to break and if something does break it's mechanical. Anybody with some mechanical skill can usually fix just about anything even if they never have seen a boiler before. Matter of fact if you were given the choice between a car mechanic and plumber that has never worked on coal boilers you're probably better off with the mechanic. Issues that are directly related to the water side of it is just like any other boiler so for that you'd want a plumber.
When you get ready to buy a boiler, buy it from someone that will take the time to show you how to service it, how to change a shear pin, how to clean it, etc. If you are buying a refurbished unit, the seller should be happy to show you what has been replaced.
I do suggest that you learn to do basic plumbing, wiring, etc by yourself. It really helps if an expansion tank starts to leak or a circulator quits on Christmas morning and no one else answers the phone.