R HIGH PRESSURE PORTABLE FORCED AIR HEATER OWNER’S MANUAL 350 SIDE PFA/PV 008 Model B350EAI 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 SECTION PAGE Safety Information .................................................................................... 3 Product Identification ............................................................................... 4 Unpacking ................................................................................................. 4 Assembly .................................................................................................. 4 Theory of Operation ....................................
SAFETY INFORMATION WARNING ICON G 001 WARNINGS IMPORTANT: Read this Owner’s Manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, electrocution, and carbon monoxide poisoning. WARNING ICON G 001 DANGER Carbon monoxide poisoning may lead to death! Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, and/or nausea.
Hot Air Outlet PRODUCT IDENTIFICATION Upper Shell Motor and Pump Assembly Lower Shell Fuel Cap Thermostat Power Cord Safety Control Reset Button Fuel Tank Figure 1 - B350EAI BTU/Hr Model UNPACKING 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. ASSEMBLY This model is furnished with wheels and front and rear handles.
ASSEMBLY Front Handle Continued Rear Handle Screw Hot Air Outlet Fuel Tank Flange Air Inlet Wheel Support Frame Extended Hub Nut Wheel Axle Cotter Pin Wheel Spacer Flat Washer Flat Washer Figure 2 - Wheel and Handle Assembly 5 099565
THEORY OF OPERATION 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. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air. The Ignition System: The electronic ignitor sends voltage to the spark plug.
FUELS WARNING ICON G 001 WARNING 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: • clogged fuel filter and nozzle • carbon build-up on spark plug • the need of non-toxic anti-icer in fuel during very cold weather IMPORTANT: Use a KEROSENE ONLY storage container. Be sure storage container is clean.
OPERATION WARNING ICON G 001 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. Attach fuel cap. 4. Set thermostat dial to desired temperature. Note: Thermostat setting must be higher than surrounding air temperature. 5. Plug power cord of heater into a standard 220/240 volt, 50 hertz, grounded (earthed) outlet.
OPERATION To Stop Heater Continued WARNING ICON G 001 CAUTION 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. Turn thermostat dial to lowest temperature setting. This will cause heater flame to go out. The motor will continue to run during the purge cycle. This allows the fan to cool the combustion chamber.
PREVENTATIVE MAINTENANCE SCHEDULE WARNING ICON G 001 WARNING Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Item How Often How To Fuel tank Flush every 150-200 hours of operation or as needed. See Storage, page 9. Filler neck screen Check for trash when filling fuel tank. Clean when dirty. Lift out of fuel tank and rinse with clean kerosene. Fuel filter assembly (Fuel tank) Clean twice a heating season or replace as needed.
TROUBLESHOOTING WARNING ICON G 001 WARNING 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 PROBLEM Motor does not start when heater is plugged in and thermostat setting is higher than surrounding air temperature. POSSIBLE CAUSE REMEDY 1.
TROUBLESHOOTING Continued OBSERVED PROBLEM Heater will not ignite, but motor runs for a short period of time. POSSIBLE CAUSE REMEDY 1. A) Fuel tank empty B) Water in fuel C) Wrong fuel 1. A) Add fuel to tank. B) Check fuel tank for bubbles of water in bottom. If found, remove fuel (see Storage, page 9). Clean tank and fuel filters (see Fuel Filters, page 17). Fill with clean fuel. C) Remove wrong fuel (see Storage, page 9). Clean tank and fuel filters (see Fuel Filters, page 17).
TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE Heater ignites, but 1. Wrong pump pressure safety control shuts off heater after a short period 2. Dirty fuel filters of time. Heater burns, but puffs of smoke can be seen. Heater does not burn steady. Heater burns with odor. Heater smokes continuously. REMEDY 1. Adjust pump pressure (see Pump Pressure Adjustment, page 16). 2. Clean fuel filters (see Fuel Filters, page 17). 3. Dirt in nozzle 3. Replace nozzle (see Nozzle, page 15). 4.
SERVICE PROCEDURES WARNING ICON G 001 WARNING 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. Upper Shell Removal 1. Remove screws 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. Upper Shell Figure 5 - Upper Shell Removal Fan Blades 1. Remove upper shell (see above). 2.
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" openend wrench (see Figure 7). 4. Replace spark plug if damaged or heavily coated with carbon. 5. Clean and regap spark plug electrodes to .055 inch (1.4 mm) (see Figure 8). 6. Install spark plug in burner head. 7. Attach spark plug wire to spark plug. 8. Replace upper shell. Burner Head Spark Plug Spark Plug Wire Figure 7 - Spark Plug Removal .
Pump Pressure Adjustment Pressure Gage Fuel Pump Port Marked “PRESS ADJ” i ps 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. 4. Adjust pressure to 100 psi. Use small flat blade screwdriver to turn slotted screw at fuel pump port marked “PRESS ADJ.” Turn screw clockwise to increase pressure.
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. 4. Rinse fuel filter and fuel lines with clean kerosene. 5. Replace fuel filter into fuel tank. 6. Connect fuel lines to pump and pump fuel filter assembly. Pump Fuel Filter Assembly Fuel Lines Pump Fuel Filter Figure 15 - Removing Tank Fuel Filter B.
SPECIFICATIONS WIRING DIAGRAM Output Rating (BTU/Hr) 340,000 Fuel Use Only Kerosene or No. 1 Fuel Oil Fuel Tank Capacity (U.S. Gal./Liters) 30/113.6 Fuel Consumption (Gal. Per Hr/Liter Per Hr) 2.5/9.5 Electric Requirements 220/240V, 50 Hz Amperage (Normal Run) 5 Motor RPM 2850 Fuel Pump Pressure (PSI) 100 Spark Plug Gap .055" (1.4 mm) Weight (approx. lbs.
PARTS LIST Burner Head Assembly REF NO. 1 2 3 4 5 6 7 8 9 PART NO. M10908-2 099229-01 HA3012 M51070-02 M51170-01 M50924-02 69246 M50077-02 M50297 DESCRIPTION Screw, #6-32 x 3/8" Photocell bracket Spark plug Nozzle Plug Burner head body Straight nipple Solenoid valve Compression elbow QTY. 2 1 1 1 1 1 1 1 1 3 1 4 5 2 6 7 8 9 Motor and Pump Assembly 1 REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 PART NO.
ILLUSTRATED PARTS BREAKDOWN 2 1 2 3 9 2 6 7 8 19 10 20 14 4 21 13 22 11 12 15 25 13 16 23 17 26 31 18 30 28 27 24 29 20 41 32 34 33 34 2 39 35 5 2 36 38 37 40 37 20 099565
PARTS LIST REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the correct model and serial numbers (from the model plate), then the part number and description of the desired part. PART NO.
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WARRANTY AND REPAIR SERVICE CERTIFICATE OF GENERAL EQUIPMENT - LIMITED 90 DAY WARRANTY DESA International warrants new Products sold by it to be free from defects in material or workmanship for a period of ninety days after date of delivery to the first user and subject to the following conditions: DESA International's obligation and liability under this Warranty is expressly limited to repairing or replacing at DESA International's option, any parts which appear to DESA International upon inspection to hav
