Desa BLP55VA Owner's Manual

Contents

www.desatech.com 121231-01B4tHeory oF oPerationAir For CombustionAnd HeatingFuelCombustion ChamberFigure 2 - Cross Section Operational View (Heater may vary from illustration)CleanHeatedAir Out(Front) CoolAir In(Back)Fan MotorPower CordHose/RegulatorAssemblyNozzleThe Ignition System: The spark transformerand spark plug lights the main burnerThe Safety Control System: This systemcauses the heater to shut down if the flamegoes out.Note: Some parts are located differently onsome models.ProPane suPPLyThe Fuel System: The hose/regulator assem-bly attaches to the propane gas supply. Thepropane gas moves through the automaticcontrol valve and out the nozzle.The Air System: The motor turns the fan. Thefan pushes air into and around the combustionchamber. This air is heated and provides astream of clean, hot air.Propane gas and propane tank(s) are to befurnished by the user.Use this heater only with a propane vaporwithdrawal supply system. See Chapter 5of the Standard for Storage and Handling ofLiquefied Petroleum Gas, ANSI/NFPA 58.Your local library or fire department will havethis booklet.The amount of propane gas ready for usefrom propane tanks varies. Two factors decidethis amount:1. The amount of propane gas in tank(s)2. The temperature of tank(s)The following chart shows the number of 100 lb(45 kg) tanks needed to run this heater.Number of tanksTemperature Modelsat tank location 55 85 125above 20° F (-7° C) 1 1 220° F (-7° C) to -0 (-18° C) 1 2 3below -0° F (-18° C) 2 2 (Use largertank)Smaller tanks can be used for limited runtimes but it is recommended to use largertanks for optimum performance.Less gas is vaporized at lower temperatures.You may need two or more 100 pound (45kg) tanks or one larger tank in colder weather.Your local propane gas dealer will help youselect the proper supply system. The minimumsurrounding-air temperature rating for eachheater is -20° F (-29° C).