Review of Charnwood C 5 stove
Charnwood 5 woodburner
Ever since start up the stove has burned too much wood, even with the single damper control pushed fully in.The bolt at the rear had to be screwed out on Charnwood recommendation and my seller / installer wasn't even aware of its existence! The glass is always badly fouled with sooty deposit every morning and is quite difficult to remove on occasions. The airways system only leaves a central triangle of clear glass by the morning. My wood is mature (2+year old ash and beech usually and I don't buy kiln dried wood because I have my own free wood. Heat output is pathetic really! So bad I'm seriously considering changing burner. Any advice would be greatly appreciated
Stove expert replied: You say that you are burning too much wood - by this do you mean that the stove is working hard, with vigorous flames continuously but not producing much heat? This seems opposite to the dirty glass that is being experienced, one indicative of an over drawing flue the other being lack of air for complete combustion and or wet fuel. Received from the manufacturer the following information: The reasons why the glass is blackening up can be various. - The C-Five is a DEFRA exempted appliance, therefore it is designed to not shut down fully. But as not everybody live in a smokeless zone, we gave the option to unscrew the stopping device so that the rod could close a bit more. But pushing the rod fully in will shut down all air vents, and as a result no air feed for the combustion, the stove "suffocates", creates creosote and suits up the appliance. - logs been slightly too damp still. An easy test would be to buy a bag of compressed log briquettes (less that 10% humidity), and make a test. - A lack of draught in the chimney/flue will slow down the oxygen feed to the fuel, resulting in it to not burn correctly. - A house that is too airtight will reduce the feeding of oxygen too. You can fit an external air kit that will take the air from the outside world. The heat output of the stove will be affected, of course, by the lack of combustion of the fuel.
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