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Fabricar: Harman Company Tamaño del archivo: 2.6 mb Nombre del archivo: Idioma del manual:

Use wood about 2” in diameter maximum. This size will form very hot wood coals in less time. Here again, the bottom door may be opened to speed the process. When a substantial bed of red wood coals are developed, start adding a thin layer of coal. Pea or nut sized coal is better for starting a fire than stove coal. When the first layer is burning with some blue flame, continue to add thin layers of coal until there is a solid bed of burning coal. Let each layer burn a blue flame before adding another layer. Layers can be added until the bed is approximately ten inches deep. This is about at the top of the firebrick. Most users find that if they keep the two manual draft controls open about one quarter turn, it helps keep the gasses burned off. NOTE; Close the bottom door as soon as the desired coal bed is made. Loading - Coal should never be added unless there is a reasonably hot fire. The coal bed should be bright and vigorous. If the fire is burning hot and there is a deep bed of coals, full loads of coal can be added at any time. However, if there is not a deep bed of coals, it is best to add small amounts of coal at first. Shaking - Shaking should be done only when there is a well-established fire. The frequency of shaking will depend on the degree of burning. Shaking should be done whenever the furnace is refueled. Best results for shaking Harman grates will occur when short choppy strokes are used rather than long even strokes. Operating Instructions/Safety Tips The amount of shaking is critical. Too much will disrupt the fire bed and too little will restrict the air flow. The proper amount normally occurs when red coals first start to drop through the grates into the ash pan. Ashes - Ashes should never be allowed to accumulate in the ash pit so that they in any way impede the flow of combustion air to the fire. Excess ash accumulation can cause the fire to go out and also can cause severe damage to the grates because of the absence of a cooling flow of air beneath them. Ashes should be placed in a metal container with a tight fitting lid. The closed container of ashes should be placed on a noncombustible floor or on the ground, well away from all combustible materials, pending final disposal. If the ashes are disposed of by burial in soil or otherwise locally dispersed, they should be retained in the closed container [outside the dwelling) until all cinders have thoroughly cooled. CAUTION: ASHES SHOULD NEVER BE ALLOWED TO ACCUMULATE ABOVE THE TOP OF THE ASH PAN. ASHES IN CONTACT WITH THE BOTTOM OF THE GRATES ACT AS AN INSULATOR, INTENSIFYING THE HEAT ON THE GRATES, AND COULD CAUSE THEIR WARPAGE. WITH AN EXCESSIVE ASH BUILDUP, PRIMARY COMBUSTION AIR IS RESTRICTED. THUS THE UNIT’S OUTPUT COULD BE REDUCED. Coal produces considerably more ash than wood. So the intervals between emptying are much shorter. For equal heat output,coal will produce seven to ten times more ash than wood. Draft Control Settings - The idle air adjustment on the flapper door may need to be adjusted slightly less for coal than for wood. Here again, experience will dictate the best setting. The maximum air adjustment bolt can be set at the maximum position for quick recov- ery. When a longer than normal burn time is desired, the maximum air adjustment can be reduced. Never adjust the maximum air bolt when the flapper door is opened. See Fig. 6 on page 11. Safety Tips When opening the loading door, it should be cracked open slightly for a few seconds to allow oxygen to burn any gases that may be present and to allow smoke to be drawn away from the door. Whenever the bottom door is open, it should be closed before opening the loading door. This is to increase draft through the loading door and prevent excess smoke from escaping. The firebox should never be filled with excessive coal so that the flue exit is blocked or impeded in any way. Burning coal generates carbon monoxide. If the flue gas exit is blocked, the carbon monoxide can be forced out of the furnace into the room with possible fatal consequences. With the exception of start up or increasing heat from a low fire, or removing ashes, the bottom door should be kept closed. Never install a Harman furnace to a chimney with a history of down drafts. KEEP CHILDREN AWAY - MAY CAUSE SERIOUS BURNS. CAUTION: ALL SURFACES OF FURNACE ARE HOT. DO NOT TOUCH. KEEP CHILDREN AWAY. SERIOUS BURNS WILL RESULT IF TOUCHED. THIS IS A HEAT PRODUCING APPLIANCE. FUEL/FIRING WARNINGS - DANGER! FIRE HAZARD! DO NOT USE CHEMICALS OR FLUIDS TO START OR “FRESHEN UP” A FIRE. SEVERE BODY BURNS OR A FIRE IN YOUR HOME COULD RESULT. DO NOT BURN GARBAGE, GASOLINE, THINNERS, DRAIN OR ENGINE OIL, KEROSENE, OR FUEL OIL, ETC. AN EXPLOSION, A HOUSE FIRE OR PERSONAL INJURY COULD RESULT. KEEP ALL SUCH LIQUIDS WELL AWAY FROM THE FURNACE WHILE IN USE. Chimney Problems Not Enough Draft - Chimney is too low. A chimney should be two feet higher than anything ten feet around it. Air may be leaking in around a loose fitting ...

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