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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Dear Friends<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This is the beast: about 18 feet tall to where the chimney passes through the roof. The glass door on the bottom right is the hole through which the picture of the chain grate was taken. The cyclone pulls particulate matter out of the final gas stream. The blue pipes are the water feed through the heat exchanger.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The chain grate combustion produces gas which is fed secondary air through that brown rectangular box under the blue pipes. The hot gases travel to the far end then return along the top to the big duct at the top thence into the cyclone.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The secondary air is fed into both ends of the combustion chamber and has variable speed fans (left side) to maintain a desired excess air level. The other end, where the fuel goes in, is much more complicated. Alex said the stainless steel on the exhaust is to replace the rusted out mild steel that had too much accumulated moisture on it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards<o:p></o:p></p><p class=MsoNormal>Crispin<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-CA'><img width=567 height=760 id="Picture_x0020_1" src="cid:image001.jpg@01CDC29E.4841B720"></span><span style='font-size:8.0pt;font-family:"Garamond","serif";color:black;mso-fareast-language:EN-CA'><o:p></o:p></span></p></div></body></html>