Desa 40,000 Owner's Manual

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Desa 40,000 Owner's Manual Manual pdf 4 page image

1088714For more information, visit www.desatech.comFor more information, visit www.desatech.comFigure 4 - Cross Section Operational ViewTHEORY OF OPERATIONFUELSVENTILATIONTHEORY OF OPERATIONThe Fuel System: The air pump forces air through the air line. The airis then pushed through the nozzle. This air causes fuel to be lifted fromthe tank. A fine mist of fuel is sprayed into the combustion chamber.The Air System: The motor turns the fan. The fan pushes air intoand around the combustion chamber. This air is heated and providesa stream of clean, hot air.The Ignition System: The ignition control assembly providespower to the ignitor. This ignites the fuel/air mixture in the combus-tion chamber.The Flame-Out Control System: This system causes the heater toshut down if the flame goes out.VENTILATIONWARNING: Provide a fresh air opening of at leastthree square feet (2,800 square cm) for each 100,000BTU/HR rating. Provide extra fresh air if more heatersare being used. The minimum ventilation require-ments must be followed to avoid risks associatedwith carbon monoxide poisoning. Make certain theserequirements are met prior to operating heater.Example: A 58.6kw (200,000 Btu/Hr) heater requires one of thefollowing:• a two-car garage door [4.88 meter (16 feet) opening] raised12.7 cm (5 inches)• a single-car garage door [2.74 meter (9 feet) opening] raised20.3 cm (8 inches)• two, 76.2 cm (30 inch) windows raised 38.1 cm (15 inches)CleanHeatedAir OutFuelFilter Air LineTo BurnerAirOutputFilterAir PumpAir IntakeFilterCoolAirInFanCombustion ChamberIgnitorMotorIgnition ControlAssemblyAir For Fuel System Air For CombustionAnd Heating FuelNozzleFuelTankFUELSUse only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels.Heavier fuels such as No. 2 fuel oil or No. 2 diesel fuel may also beused but will result in:• noticeable odor• additional fuel filter maintenance• the need for nontoxic, anti-icer additives in very cold weatherDo not use fuels heavier than No. 2 grade or heavy oils such as oildrained from crankcases. These heavy oils will not ignite properlyand will contaminate the heater.IMPORTANT: Use a KEROSENE ONLY (blue) or DIESEL ONLY(yellow) storage container. Be sure storage container is clean. For-eign matter such as rust, dirt, or water will cause the ignition controlassembly to shut down heater. Foreign matter may also requireheater's fuel system to be frequently cleaned.WARNING: Use only kerosene, #1/#2 diesel/fueloil, JET A or JP-8 fuels to avoid risk of fire or explo-sion. Never use gasoline, oil drained from crank-cases, naphtha, paint thinners, alcohol or other highlyflammable fuels.