R PORTABLE FORCED AIR HEATERS OWNER’S MANUAL 100 SIDE PV 002 150 SIDE HANDLE PFA/PV 005 Heater Sizes: 70,000 100,000 150,000 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 SECTION PAGE Safety Information ......................................................................... 3 Product Identification .................................................................... 4 Unpacking ...................................................................................... 5 Assembly ....................................................................................... 5 Theory of Operation ...................................................................... 6 Fuels .
SAFETY INFORMATION ! 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, and carbon monoxide poisoning. ! DANGER Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea.
PRODUCT IDENTIFICATION Hot Air Outlet Handle Upper Shell Fan Guard Lower Shell Air Filter End Cover Fuel Tank Fuel Cap Side Cover Flame-Out Control Reset Button Power Cord 35/50/70,000 BTU/HR DOMESTIC PFA/PV 042 Figure 1 - 70,000 BTU/Hr Model Hot Air Outlet Upper Shell Lower Shell Fuel Cap Fan Guard Fuel Tank Side Cover Flame-Out Control Reset Button Hot Air Outlet Power Cord Figure 2 - 100,000 BTU/Hr Model Upper Shell Lower Shell Fan Guard Fuel Tank Fuel Cap Slide Cover Power Cord 4 Fi
UNPACKING ASSEMBLY (For 100,000 and 150,000 BTU/Hr Models Only) 1. Remove all packing items applied to heater for shipment. 2. Remove all items from carton. 3. Check items for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater. These models are furnished with wheels and handles. Wheels, handles, and the mounting hardware are found in the shipping carton. Tools Needed • Medium Phillips Screwdriver • 3/8" Open or Adjustable Wrench • Hammer 1.
THEORY OF OPERATION The Fuel System: The air pump forces air through the air line. The air is then pushed through the burner head nozzle. This air causes fuel to lift from the tank. 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.
VENTILATION WARNING Follow the minimum fresh, outside air ventilation requirements. If proper fresh, outside air ventilation is not provided, carbon monoxide poisoning can occur. Provide proper fresh, outside air ventilation before running heater. Provide a fresh air opening of at least three square feet (2800 square cm) for each 100,000 BTU/Hr rating. Provide extra fresh air if more heaters are being used.
OPERATION Continued To Stop Heater 1. Unplug power cord from outlet. To Restart Heater 1. Wait 2 minutes after stopping heater. 2. Repeat steps under To Start Heater, page 7. STORAGE 1. Drain fuel tank. Note: Some models have drain plug on underside of fuel tank. If so, remove drain plug to drain all fuel. If heater does not have drain plug, drain fuel through fuel cap opening. Be sure all fuel is removed. 2. Replace drain plug if used. 3. Add one gallon (4 liters) of clean kerosene to fuel tank. 4.
TROUBLESHOOTING WARNING Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. OBSERVED FAULT POSSIBLE CAUSE REMEDY Heater ignites, but flame-out control shuts off heater after a short period of time Wrong pump pressure Dirt in nozzle See Pump Pressure Adjustment, page 12. See Air Output, Air Intake and Lint Filters, page 12. See Fuel Filter, pages 10 and 11. See Nozzle, page 13. Dirty photocell lens Bad flame-out control Clean photocell lens.
SERVICE PROCEDURES WARNING Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Upper Shell Upper Shell Removal Fan Guard 1. Remove screws along each side of heater using 5/16" nut-driver. These screws attach upper and lower shells together. 2. Lift upper shell off. 3. Remove fan guard.
Fuel Filter Fuel Filter, Bushing, and Lower Fuel Line (100/150,000 BTU/Hr Models) 1. Remove side cover screws using 5/16" nut-driver. 2. Remove side cover. 3. Pull upper fuel line off fuel filter neck. 4. Carefully pry bushing, lower fuel line, and fuel filter out of fuel tank. 5. Wash fuel filter with clean fuel and replace in tank. 6. Attach upper fuel line to fuel filter neck. 7. Replace side cover.
Air Intake Filter Air Output, Air Intake, and Lint Filters Filter End Cover 1. Remove upper shell (see page 10). 2. Remove filter end cover screws using 5/16" nutdriver. 3. Remove filter end cover. 4. Replace air output and lint filters. 5. Wash or replace air intake filter (see Preventative Maintenance Schedule, page 8). 6. Replace filter end cover. 7. Replace fan guard and upper shell.
Nozzle 1. Remove upper shell (see page 10). 2. Remove fan (see page 15). 3. Remove fuel and air line hoses from burner head. 4. Remove spark plug wire from spark plug. 5. Remove spark plug from burner head using 13/16" open-end wrench. 6. Remove three screws using 5/16" nut-driver and remove burner head from combustion chamber. 7. Place burner head into vise and lightly tighten. 8. Carefully remove nozzle from burner head using 5/8" socket wrench (see Figure 19). 9.
Blade Pump Rotor Pump Plate (Procedure if rotor is binding) 1. Remove upper shell (see page 10). 2. Remove filter end cover screws using 5/16" nutdriver. 3. Remove filter end cover and air filters. 4. Remove pump plate screws using 5/16" nutdriver. 5. Remove pump plate. 6. Remove rotor, insert, and blades. 7. Check for debris in pump. If debris is found, blow out with compressed air. 8. Install insert and rotor. 9. Check gap on rotor. Adjust to .003"/.004" (.076/.101 mm) if needed (see Figure 22).
Fan IMPORTANT: Remove fan from motor shaft before removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch. Fan Setscrew 1. Remove upper shell (see page 10). 2. Use 1/8" allen wrench to loosen setscrew which holds fan to motor shaft. 3. Slip fan off motor shaft. 4. Clean fan using a soft cloth moistened with kerosene or solvent. 5. Dry fan thoroughly. 6. Replace fan on motor shaft. Place fan hub flush with end of motor shaft (see Figure 25). 7.
ILLUSTRATED PARTS BREAKDOWN 3 1 2 70,000 BTU/Hr 4 5 10 7 6 14 8 12 12 11 18 15 16 19 17 23 24 21 20 25 22 10-1 10-2 35 36 43 27 29 26 44 10-3 31 10-4 32 10-7 10-5 28 30 39 33 38 37 10-6 34 Burner Head Assembly 18-1 18-2 40 13 18-3 41 18-4 9 18-5 18-6 18-7 45 18-18 42 18-8 18-17 18-9 18-16 18-15 16 18-10 18-11 18-14 Motor and Pump Assembly 18-13 18-12 101585
PARTS LIST 70,000 BTU/Hr KEY NO. 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.
ILLUSTRATED PARTS BREAKDOWN 2 1 100,000 BTU/Hr 3 4 5 8 12 13 14 7 8-1 15 16 9 10 8-2 30 11 17 31 20 18 21 19 25 28 8-3 27 8-4 23 24 8-7 8-5 34 44 BURNER HEAD 100 EAI/EBI 8-6 22 29 33 36 32 26 35 37 PFA/P 022 Burner Head Assembly 38 39 45 42 41 13-1 13-2 13-3 40 43 13-4 6 13-5 13-6 13-7 13-18 13-8 13-17 13-9 13-16 13-15 13-10 13-14 13-11 13-13 18 Motor and Pump Assembly 13-12 101585
PARTS LIST 100,000 BTU/Hr 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. KEY NO.
ILLUSTRATED PARTS BREAKDOWN 150,000 BTU/Hr 2 1 3 4 44 6 7 9 46 10 5 16 7-1 8 23 7-2 11 14 19 12 24 15 28 13 39 25 17 45 7-3 26 7-4 37 38 7-7 7-5 22 21 43 27 20 18 29 47 30 7-6 BURNER HEAD 100 EAI/EBI PFA/P 022 Burner Head Assembly 31 40 32 10-1 42 35 10-2 10-3 33 10-4 34 36 10-5 10-6 41 10-7 10-18 10-8 10-17 10-9 10-16 10-15 10-10 10-14 10-11 10-13 Motor and Pump Assembly 10-12 20 101585
PARTS LIST 150,000 BTU/Hr 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. KEY NO.
WHEELS AND HANDLES FOR 100,000 AND 150,000 BTU/Hr MODELS KEY PART NO. NUMBER 1 HA2203 HA2204 M12345-33 M12342-3 M12831-3 NTC-3C 097896-01 M28526 M51015-01 M16801-2 2 3 4 5 6 7 PART DESCRIPTION 100,000 150,000 QTY. QTY.
Power Plug 220V/60Hz WIRING DIAGRAMS White Black Green White Motor White Orange Ignitor Spark Plug Terminal White Board Red Green/ Yellow Red Blue Blue Photocell B FlameOut Control Reset Button R Red Black S or 2 M or 3 Red Motor Start Relay L or 1 Figure 26 - Wiring Diagram ACCESSORIES Purchase accessories from your local dealer. AIR GAUGE KIT - HA1180 For all models. Special tool to check pump pressure. HEAVY DUTY WHEELS AND HANDLE KIT - HA1202 For heavy duty applications.
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
