Desa B350D Service Manual

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Contents

H I G H P R E S S U R E P O R T A B L E F O R C E D A I R H E A T E R S E R V I C E M A N U A L5Fuel SelectionOne of the most critical specifications fortrouble-free operation is the use of a clean,acceptable fuel. Listed below are guidelinesand comments concerning operation of heat-ers with different fuels.RecommendedFuels CommentsKerosene Best overall results. Mini-Fuel Oil No. 1 mum odor and minimumJet “A” maintenance. No additivesnecessary for cold weatheroperation.Alternate Fuels CommentsFuel Oil No. 2 Noticeable increase inDiesel No. 1 odor. Requires frequentDiesel No. 2 maintenance of fuel filter,nozzle and spark plug.Cannot be used at tem-peratures below +20°F.ElectricalConnect heater to a standard electrical outlet(120V/60Hz) to operate. For safety, all heat-ers have a three-prong, grounded powercord. Plug power cord of heater into three-prong, grounded extension cord. Extensioncord must be at least six feet long. Make sureyou use extension cord large enough to carrythe voltage the heater requires. Use thefollowing chart to determine the proper sizeextension cord for heater.Length of Cord Wire Size (AWG)100 ft. No. 14200 ft. No. 12300 ft. No. 10400 ft. No. 8500 ft. No. 63S E C T I O NVentilationOnly use heater in well-ventilated areas. Thefollowing chart shows the minimum fresh,outside air opening needed for proper venti-lation.Heater Size Square Foot(BTU/Hr) Opening250,000 7.5300,000 9.0350,000 10.5600,000 18.0The above chart is based on ventilation re-quirements of at least a three (3) square footfresh, outside air opening for each 100,000BTU/Hr of rating. Provide extra fresh air ifusing more heaters. If possible, provide cross-ventilation for better air movement. Thisheater produces carbon monoxide, which islisted by the State of California as a repro-ductive toxin under Proposition 65.Heater SizingUse heater which is properly sized for thearea to be heated. Listed below is a simpleformula that allows you to determine heaterBTU/Hr size requirements.Cubic Feet of Area x .133 x DesiredTemperature Rise °F = BTU sizeExampleArea: 100' x 100' x 8' = 80,000 Cubic FeetDesired Temperature Rise: 30°F80,000 (Cubic Feet)x .133 (Factor)10,640x 30 (Temperature Rise)319,200 (BTUs/Hr Needed)Answer: Use a 350,000 BTU/Hrheater for this heating example.GENERAL SPECIFICATIONS AND APPLICATIONS INFORMATION