How the Heater Works... The drum is a high capacity, cylindrical firebox. On the upper portion of the door is the adjustable draft control disk, for the regulation of air entering the unit. The air is preheated as it is drawn down the internal draft channel (on the inside of the door). The draft is sucked into the bottom of the heater with a turbulent action, mixing with the wood gases for efficient combustion. The patented design of the airtight door and the matching door frame and the internal draft channel make the unit spark proof. 16 gauge steel walls of the drum heater are strong enough to withstand constant high temperatures, and yet generate quick heat. (It takes heat longer to travel through heavy-walled material. And the more heat that penetrates the surface, the less hot air escapes up the chimney.) This stove, therefore, allows the maximum amount of heat to penetrate into your home. Being round gives the barrel more resistance to stress. In the heavy, flat-sided rectangular stoves, the corners get hotter. In the round thinner walled stove, the temperatures of the wall is more uniform, therefore, the thermal stresses are less. And, since steel is flexible, it has the ability to bend under stress, while cast iron can only crack when it reaches extreme temperatures
. No Grates, Please Hot coals last longer in stoves without grates. Ashes which the coals lie in keep oxygen from reaching much of the charcoal surface and thus reduces the rate of combustion. The ashes also thermally insulate the coals, slowing the cooling rate. Without a grate, large volumes of ash are allowed to accumulate and not effect the stove's operation. Compaction is also possible when wood lies directly on the ashes. The heat from a direct fire can fuse the ash into a semi-solid crust, thus allowing more ash to be stored in the same volume of space.
Duct Work The unit is designed to operate with only one heating duct coming through a wall or window. Existing ductwork is not designed for wood heat. And will not effectively move the heat around your home because of static pressure. It is also not safe because existing ductwork is not insulated and sits up next to your floor studs. If you have a power failure, existing ductwork could possible become overheated causing a fire. Just One Heat Register Through the one (1) register your Lil' House Heater will supply your home with 465 cubic foot per minute of air heated to above 120 degrees. Used in conjunction with a cold air return supply air from the far side of your home you are actually moving 930 cubic foot per minute of (your home's own) air. As the duct pushes the heat in, the cold air return pulls air out; thus moving the heat through your home efficiently.
May I Burn Coal In My Wood Heater? Definitely, NO!!! This is a wood burner only. The use of coal requires grates and a large volume of oxygen for proper combustion. Our unit is designed to provide a controlled small amount of oxygen required for wood burning. For Safe Operation Of Your Woodburner: * Place the stove on a fireproof base. * Burn only dry, well seasoned firewood. * Dispose of ashes in a closed metal container outside the house. * Inspect the chimney DAILY for creosote build up. * Install smoke detectors to alert family members should a malfunction occur. *
Consult the owner's manual for installation and operating instructions. Why No Grates? Sand? Firebrick? Our Instructions are to operate the heater with at least 2" of wood ash to insulated the bottom of the drum. (The presence of wood ash helps promote the formation of charcoal in within the drum.) THERE IS ABSOLUTELY NO ADVANTAGE IN USING FIREBRICK, ETC., in the heater, and we strongly advise against it for the following reasons: The kits were tested to U.L. Standard 1492 by R.F. Geisser Laboratories, WITHOUT firebrick, sand or grates. Therefore, any test results mentions herein refer to testing the units with wood ash as insulation. During damp or humid weather, when the unit is not in use, moisture will form between the firebricks and most probably result in the drum rusting out. Firebrick or sand will hold the heat in the unit, resulting in lower transfer of heat from the unit. Thus, lowering efficiency. The presence of firebrick, and grates reduces the amount of fuel which can be put in the heater, and increases the frequency of ash removal. WILL ALSO VOID AL WARRANTIES. Please read all installation instructions thoroughly and operate unit as recommended.