Boilerman, you must be tired as well, that was not Scott but instead Marty who happens to own a 250. As far as ALL your numbers that CB claims or anybody else for that matter including us, we all know they can be and are manipulated, remember a few months back when the EPA was suing CB for falsely advertising 97% efficiency, really, come on Boilerman, a cold start high efficiency oil burner like Buderus can't even achieve those numbers in cold start triple pass, direct vent,low volume boilers, if I'm not mistaken they are in the 90% area with exhaust temps of below 400 degrees, I remember going to a show in Wisconsin 2 years ago and walking in the front gate, there at the entrance was CB with his display and hand painted on a 4 by 8 sheet of plywood was his statement, CB -97% efficient PM 82% efficient, he was not even running his units in the show, Dave Jacobi and I ran both the 250 and the chip boiler at the show, the 250 was running with a stack temp of 260 degrees and the chip boiler at 320 degrees both with no visible smoke at all, real life is where it's at, why do you think that the EPA is always working on changing up test procedures, it is to stop manufacturers from manipulating the tests. We both have great units, Hell every boiler out there is a great boiler because it replaces oil, CB has the best marketing in the industry which is why they hold about 70% of the market share. Why is it that that they never want to place their boiler next to mine at a show in fact I rarely see them at a show and I have never seen them run one, I personally invite Rick Young (AKA farmer for hire, the dealer mentioned by Dr. here) to do the Fryburg fair with me and several of my competitors such as Empire, Vigas, Benjamin, Heatmor, Woodmaster, we all set up in one row, ENERGY ROW, we all have a good time and sell to our customer base without bashing one another, what Drpinard did WAS BASHING
Lets get down to the boilers shall we, I will describe my 250 and you can describe yours OK.
Optimizer 250 weighs 3030 pounds dry weight and holds 240 gallons of water, it has a round top fire box for extra strength and less corners, 3 1/2 inches of solid refractory cement in the base of the firebox with
4 1/2 inches of firebrick in the reaction chamber, A drop in nozzle and easily adjusted doors and latches on all openings of which there are 4, one primary combustion, one reaction chamber and one at each end of the heat exchanger for EASY cleaning. It has 6 round vertical tubes that start at the reaction chamber and move up to a shelf in the back of the boiler ( Access Door ) then the exhaust goes through 10 horizontal 1 1/2 inch round tubes to the front of the unit, ( Access door ) rises up to the 10 return tubes that are also 1 1/2 inch round back to the rear access door then up the chimney, when I say exhaust temps of 260 degrees this is where we measure it and that is with 190 degree water in the boiler. All those tubes are surrounded by boiler water giving incredible heat exchange area with easy cleaning ability, I can clean my 250 while it sits on my show trailer, on a stepladder at shows, in front of customers, while it is hot in 8 minutes so CB's claims that I personally have seen and heard of how difficult ours are to clean are bull crap. If I can ever persuade CB to a race on cleaning our units at a show it's game on. By the way how do you clean a square tube, I never could understand that one.
Lets talk controls shall we, these are machines that are designed to set outside in the weather, controls are going to fail at some point in the units life, we choose to use standard off the shelf components that are accessible anywhere in the world as a matter of fact that Jonson A-419 aqua-stat is probably the most common control in the hydronics industry, computers I'm finding are a great tool but I'm not sure I want mine in 30 degree below zero weather and I certainly don't want to be forced by the manufacturer to purchase the replacement from them when it fails, I'm sure you will have a rebuttal and we can certainly continue but for now I will sign off as I too have to get to work.