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FORCED AIR HEATER OWNER’S MANUAL 350 SIDE PFA/PV 008 Model B350CE Heater Size: 340,000 Btu/Hr IMPORTANT Read and understand this manual before assembling, starting, or servicing heater. Improper use of heater can cause serious injury. Keep this manual for future reference.
CONTENTS SAFETY INFORMATION SECTION Safety Information ... 2 Product Identification ... 4 Unpacking ... 4 Assembly ... 4 Theory of Operation ... 6 Fuels ... 7 Ventilation ... 7 Operation ... 8 Storing, Transporting, or Shipping ... 9 Preventative Maintenance Schedule ... 10 Troubleshooting ...
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SAFETY INFORMATION Continued 101964 WARNINGS Make certain you read and understand all Warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater. • Use only kerosene or No. 1 fuel oil to avoid risk of fire or explosion. Never use gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels.
Lower Shell Fuel Cap Thermostat Figure 1 - B350CE Btu/Hr Model 1. Remove all protective packing applied to heater for shipment. 2. Remove heater from shipping container. 3. Check heater for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.
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ASSEMBLY Continued 101964 Front Handle Hot Air Screw Outlet Fuel Tank Flange Wheel Support Frame Wheel Cotter Flat Washer Figure 2 - Wheel and Handle Assembly Extended Axle Wheel Spacer Flat Washer Rear Handle Air Inlet...
THEORY OF OPERATION Clean Heated Air Out The Fuel System: The motor turns the fuel pump. The fuel pump pulls fuel from the fuel tank. The fuel pump pushes fuel through a filter and a solenoid valve and out the burner head nozzle. A fine mist of fuel is sprayed into the combustion chamber. The Air System: The motor turns the fan.
FUELS VENTILATION 101964 Use only kerosene or No. 1 fuel oil to avoid risk of fire or explosion. Never use gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels. Do not use heavy fuels such as No. 2 fuel oil or No. 2 diesel. Using heavy fuels will result in: •...
OPERATION WARNING Review and understand the warnings in the Safety Information Section. They are needed to safely operate this heater. To Start Heater 1. Follow all ventilation and safety information. 2. Fill fuel tank with kerosene or No. 1 fuel oil. 3.
OPERATION Continued STORING, TRANSPORTING, OR SHIPPING 101964 To Stop Heater Never unplug heater while heater is running. Heater must go through purge cycle. The purge cycle cools the combustion chamber. Damage to heater can occur if combustion chamber is not cooled. Do not restart heater until purge cycle is complete. 1.
PREVENTATIVE MAINTENANCE SCHEDULE Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Item How Often Fuel tank Flush every 150-200 hours of operation or as needed. Filler neck screen Check for trash when filling fuel tank.
TROUBLE- SHOOTING 101964 Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Only a qualified service person should service and repair heater. OBSERVED POSSIBLE CAUSE PROBLEM Motor does not 1. No power or low voltage start when heater at heater due to: is plugged in and...
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TROUBLE- SHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE Heater will not 1. A) Fuel tank empty ignite, but motor B) Water in fuel runs for a short C) Wrong fuel period of time. 2. Dirt in nozzle 3. Very low temperature may cause fuel to thicken and not flow 4.
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OBSERVED TROUBLE- PROBLEM SHOOTING Continued Heater ignites, but flame-out control shuts off heater after a short period of time. Heater burns, but puffs of smoke can be seen. Heater does not burn steady. Heater burns with odor. Heater smokes continuously. 101964 POSSIBLE CAUSE REMEDY...
SERVICE PROCEDURES Upper Shell Removal 1. Remove screws and lockwashers along each side and top of heater using 5/16" nut-driver. These screws attach upper and lower shells together (see Figure 5). 2. Lift upper shell off. Fan Blades 1. Remove upper shell (see above).
Spark Plug 1. Remove upper shell (see page 14). 2. Remove spark plug wire from spark plug (see Figure 7). 3. Remove spark plug from burner head using 13/16" open- end wrench (see Figure 7). 4. Replace spark plug if damaged or heavily coated with carbon.
Pump Pressure Adjustment 1. Remove pressure gage plug from fuel pump port marked “GAGE.” 2. Install accessory pressure gage (part number M4574) to fuel pump port marked “GAGE” (see Figure 10). 3. Start heater (see Operation, page 8). Allow motor to reach full speed.
Fuel Filters A. Tank Fuel Filter 1. Disconnect fuel lines from pump and pump fuel filter assembly with 7/16" wrench (see Figure 15). 2. Carefully pry fuel filter loose from fuel tank with flat end of screwdriver. 3. Inspect fuel filter for water or dirt.
SPECIFICATIONS WIRING DIAGRAM ACCESSORY Output Rating (Btu/Hr) Fuel Fuel Tank Capacity (U.S. Gal./Liters) Fuel Consumption (Gal. Per Hr/Liter Per Hr) Electric Requirements Amperage (Normal Run) Motor RPM Fuel Pump Pressure (PSI) Spark Plug Gap Weight (approx. lbs./kilograms) Dry (net) With Full Fuel Tank Black Relay White...
PARTS LIST Burner Head Assembly PART NO. DESCRIPTION M10908-2 Screw, #6-32 x 3/8" 099229-01 Photocell bracket HA3012 Spark plug M51070-02 Nozzle M51170-01 Plug M50924-02 Burner head body 69246 Straight nipple M50077-02 Solenoid valve M50297 Compression elbow M50429 Spark plug gasket Motor and Pump Assembly REF.
2701 Industrial Drive Bowling Green, KY 42101 U.S.A. Kerosene Portable Forced Air Heater Model Number: B350CE It is declared that these models conform to the Machinery Directive 89/392/EEC, 93/68/EEC including 91/368/EEC. We declare that the models noted are in conformity.
DESA International, or any alteration or repair by others in such manner as in DESA International's judgement affects the Product materially and adversely, shall void this Warranty.