Hi, I'm Chris and for about the last 5 years, I've been building the stokers at efm. We are still producing the same stoker that was introduced in 1951, many of which are still in use and striving to keep creating stokers that will be around in another 50 years.
A few years ago, a guy called and said he had an old efm wood-coal boiler in his cellar and wanted to know if anybody wanted it. It was about 25 years old at the time and I said I'd be right over. I noticed that it was a prototype of the WCB24, a pre-production prototype and that there was a leak at the coil plate gasket. He was happy of my offer of $100 and I took it away.
It sat in my garage for two years. I air tested it and only found a leak at the hardened coil gasket. Finally, I determined to get it hooked into my house boiler and use it as the primary source of heat and using my oil boiler only as a vessel to supply water for my baseboards and domestic water. It was an intimidating project, but with about 3 aquastats, 5 relays and my oil boiler controls, lots of piping, wiring and 3 months of time, I was able to create a fully automatic wood boiler. The hardest part is putting wood in the door.
I've been married 31 years, the kids are all gone, and we're enjoying the afternoon of our lives.