PORTABLE FORCED AIR HEATER OWNER’S MANUAL Heater Sizes: RJ45 And RJ70 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.
RJ45 And RJ70 PORTABLE FORCED AIR HEATERS 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, and/or nausea.
OWNER’S MANUAL PRODUCT IDENTIFICATION Hot Air Outlet Handle Upper Shell Lower Shell Fan Guard Fuel Gauge Air Filter End Cover Fuel Tank ON/OFF Switch Fuel Cap Side Cover Receptacle Ignition Control Assembly (assembly on inside of side cover) Power Cord Figure 1 - RJ45 Hot Air Outlet Handle Lower Shell Upper Shell Fuel Gauge Fan Guard Fuel Tank Air Filter End Cover Receptacle Fuel Cap Side Cover ON/OFF Switch Flame-Out Control Reset Button Power Cord Figure 2 - RJ70 104950 3
RJ45 And RJ70 PORTABLE FORCED AIR HEATERS THEORY OF OPERATION The Fuel System: The air pump forces air through the air line. The air is then pushed through the 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.
OWNER’S MANUAL OPERATION WARNING: Review and understand the warnings in the Safety Information section, page 2. They are needed to safely operate this heater. Follow all local codes when using this heater. TO START HEATER 1. 2. 3. 4. Follow all ventilation and safety information. Fill fuel tank with kerosene or no. 1 fuel oil. Attach fuel cap. Plug power cord of heater into grounded extension cord. Extension cord must be at least 2 meters long.
RJ45 And RJ70 PORTABLE FORCED AIR HEATERS TROUBLESHOOTING WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. RJ45 OBSERVED FAULT POSSIBLE CAUSE REMEDY Motor does not start five seconds after heater is plugged in and switched ON 1. No power to heater 1. Check circuit breaker in electrical panel WARNING: High voltage! 2. Bad electrical connection between motor and ignition control assembly or ignition assembly and power cord 3.
OWNER’S MANUAL TROUBLESHOOTING WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Continued RJ70 OBSERVED FAULT POSSIBLE CAUSE REMEDY Heater ignites, but flame-out control shuts off heater after a short period of time 1. Photocell assembly not properly installed (seeing flame) 2. Wrong pump pressure 3. Dirty air output, air intake and lint filters 1. Make sure photocell boot is properly seated in bracket 2.
RJ45 And RJ70 PORTABLE FORCED AIR HEATERS PUMP PRESSURE ADJUSTMENT SERVICE PROCEDURES Fan 1. Motor WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. 2. 3. Flush 4. UPPER SHELL REMOVAL 1. 2. 3. Motor Shaft Remove screws along each side of heater using 5/16" nut-driver. These screws attach upper and lower shells together. Lift upper shell off. Remove fan guard.
OWNER’S MANUAL SERVICE PROCEDURES Continued 2. 3. 4. 5. 6. 7. 1. Remove upper shell and fan guard (see Upper Shell Removal, page 8). Remove fan (see Fan, page 8). Remove side cover screws with a 5/16" nut driver. Remove side cover (see Figure 9). Disconnect ignitor wires from ignition control assembly (see Figure 10). Pull the ignitor wires up through the hole in the lower shell. Disconnect fuel line hose and air line hose. Remove photocell from photocell bracket (see Figure 10).
RJ45 And RJ70 PORTABLE FORCED AIR HEATERS SERVICE PROCEDURES 9. Continued 10. SPARK PLUG (RJ70) 1. 2. 3. 4. 5. 6. 7. 8. 9. Remove upper shell (see Upper Shell Removal, page 8). Remove fan (see Fan, page 8). Remove spark plug wire from spark plug. Remove spark plug from burner head using 13/16" open-end wrench. Clean and regap spark plug electrodes to 2.2 mm. Install spark plug in burner head. Attach spark plug wire to spark plug. Replace fan (see Fan, page 8).
OWNER’S MANUAL SERVICE PROCEDURES 9. Continued 10. 11. NOZZLE (RJ70) 1. 2. 3. 4. 5. 6. 7. 8. Remove upper shell (see Upper Shell Removal, page 8). Remove fan (see Fan, page 8). Remove fuel and air line hoses from burner head. Remove spark plug wire from spark plug. Remove spark plug from burner head using 13/16" open-end wrench. Remove three screws using 5/16" nutdriver and remove burner head from combustion chamber. Place burner head into vise and lightly tighten.
RJ45 And RJ70 PORTABLE FORCED AIR HEATERS WIRING DIAGRAMS Orange Ignitor Power Plug 100V/50 or 60 Hz Orange IGNITOR Red MOTOR MAIN Ignition Control Assembly Motor Green Black Green White Black ON/OFF Switch Receptacle 120V (L1) Black AC NEUTRAL (L2) MOTOR RETURN White Photocell Blue PHOTOCELL Blue PHOTOCELL 104040 IGNITOR Figure 22- Wiring Diagram For RJ45 Power Plug 100V/50 or 60 Hz Green White Plug Black Black Power On Switch Receptacle Black White White White Motor Green/
OWNER’S MANUAL SPECIFICATIONS Maximum Output Rating (Kcal/Hr) Fuel Fuel Tank Capacity (liters) Fuel Consumption (liters/Hr) Electric Requirements Amperage (Normal Run) Motor Speed (RPM at 50/60 Hz) Motor Watts Pump Pressure (kg/cm2 at 50/60 Hz) RJ45 RJ70 11,900 17,600 Use Only Kerosene or No. 1 Fuel Oil 15.1 18.9 1.3 1.9 100V/50 or 60 Hz 3.7 3.0 2850/3450 2850/3450 93 93 0.22/0.24 0.35/0.38 ACCESSORIES Purchase accessories and parts from your nearest dealer.
RJ45 And RJ70 PORTABLE FORCED AIR HEATERS ILLUSTRATED PARTS BREAKDOWN 4 1 RJ45 2 5 9-1 36 9-2 9-5 3 9 7 6 11 9-4 9-3 8 21 10 12 18 13 20 22 16 23 24 25 28 42 26 27 30 29 35 37 34 12-1 19 12-2 17 12-3 15 41 12-4 40 12-18 12-17 39 33 32 14 31 38 12-7 12-16 12-8 12-5 12-6 12-9 12-15 Motor and Pump Assembly 12-13 12-11 12-14 12-10 12-12 14 104950
OWNER’S MANUAL PARTS LIST 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. RJ45 KEY NO.
RJ45 And RJ70 RJ70 PORTABLE FORCED AIR HEATERS ILLUSTRATED PARTS BREAKDOWN 3 RJ70 2 4 10 7 6 14 8 26 12 12 11 15 16 23 18 48 17 25 24 10-1 21 10-2 20 22 10-4 35 36 10-3 27 29 10-5 44 10-7 31 32 30 39 10-6 28 33 38 Burner Head Assembly 1 18-18 34 19 40 18-4 41 18-5 13 18-6 43 18-1 18-2 37 9 18-7 18-3 5 47 46 45 18-8 18-17 42 18-9 18-10 18-11 18-16 18-15 18-14 18-12 Motor and Pump Assembly 18-13 16 104950
OWNER’S MANUAL PARTS LIST 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. RJ70 KEY NO.
WARRANTY AND REPAIR SERVICE LIMITED WARRANTY DESA International warrants this product and any parts thereof, to be free from defects in materials and workmanship for one (1) year from the date of first purchase when operated and maintained in accordance with instructions. This warranty is extended only to the original retail purchaser, when proof of purchase is provided. This warranty covers only the cost of parts and labor required to restore the product to proper operating condition.
