Now that same creosote is burned in the fire box along with free timber collected during the year. These modifications with a little bit of thought can be applicable to most older wood stoves.īefore you throw out your old log burner, watch how I improved the efficiency and combustion in an old Franko Belge Lorraine multifuel stove from being one of the most inefficient to one of the most efficient burners and achieved by installing two very simple modifications, which with a little thought can be adapted to most of these old faithful legends.īefore the modifications, our chimney used to collect creosote and required regular cleaning to remove it. These are being replaced because they are inefficient and emit too much smoke and this is a waste of irreplaceable craftsmanship. Many older Log burners were built to last a lifetime. (Photo Credit to the forum users on Hearth.How My old log burner / Boiler has been Improved beyond all expectations to match the efficiency of modern stoves! It cost less that £60 to bring this boilers performance up to match most new stoves with secondary combustion.
More examples of Chimney Thimble installations: Clearance for double wall stove pipe is 6" for these areas.
180 degree heat shields are available for single wall pipe, to reduce clearances to 6" for walls and 9" to the ceiling. Single wall stove pipe, going from the stove to the chimney must have a minimum of 18" clearance to combustibles. You should pack insulation snugly against the outside box frame of the thimble, but never place insulation into the area within the thimbles's cylinder. Insulated Wall Thimbles are designed so the thimble assembly will reduce the minimum 18 inch clearance to combustibles, to a minimum of at least 2" clearance. Wall thimbles are an important component for venting stoves and other appliances since the thimble will insulate between the pipe and the wall, to protect drywall, wood frames and other materials from high temperatures and risk of fires. 211 (Standard for Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances) and building codes, and should be UL Listed. The criteria for installing the Insulated Wall Thimble is in accordance with the N.F.P.A. Running any residential or building heating appliance, burning gas, liquid, or solid fuels through a combustible wall, will require an Insulated Wall Thimble as your passageway to connect appliances to interior or exterior masonry chimneys. It is of utmost importance that the Insulated Thimble be installed only in accordance with their instructions. A major cause of chimney related fires, is failure to maintain required clearances (air space) to combustible materials.
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