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Desa PORTABLE FORCED AIR HEATERS manual

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Table of contents for the manual

  • Page 1

    ARL LOGO G 004 ® 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. PORT ABLE FORCED AIR HEA TERS OWNER’S MANUAL Heater Sizes: 35,000 50,000 55,000 Btu/Hr[...]

  • Page 2

    2 102437 Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Unpacking ..................................................................................... 4 Theory of Operation .................................[...]

  • Page 3

    3 102437 SAFETY INFORMA TION Continued W ARNINGS (Continued) • 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. • Fueling a) Personnel involved with fueling shall be qualified and thoroughly familiar with the manufacturer's instr[...]

  • Page 4

    4 102437 THEOR Y OF OPERA TION 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 chamb[...]

  • Page 5

    5 102437 W ARNING ! 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 ?[...]

  • Page 6

    6 102437 OPERA TION Continued Item How Often How To Fuel tank Flush every 150-200 hours See Storing, Transporting, or of operation or as needed. Shipping , above. Air output and Replace every 500 hours of See Air Output, Air Intake, lint filters operation or once a year. and Lint Filters, page 9. Air intake Wash and dry with soap and See Air Outpu[...]

  • Page 7

    7 102437 Fuel filter Clean twice a heating season See Fuel Filter, page 10. or replace as needed. Spark plug Clean and regap every 600 See Spark Plug, pages 10 hours operation or replace and 11. as needed. Fan blades Clean each season or as needed. See Fan, page 9. Motor Not required/permanently lubricated PREVENT A TIVE MAINTENANCE SCHEDULE Conti[...]

  • Page 8

    8 102437 SER VICE PROCEDURES W ARNING ! Upper Shell Removal 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. Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Air Output[...]

  • Page 9

    9 102437 Pump Pressure Adjustment 1. Remove pressure gauge plug from filter end cover. 2. Install accessory pressure gauge (part number HA1180). 3. Start heater (see Operation, page 6). Allow motor to reach full speed. 4. Adjust pressure. Turn relief valve to right to increase pressure. Turn relief valve to left to decrease pressure. See specific[...]

  • Page 10

    10 102437 11. Tighten spark plug with spark plug mounting nut. 12. Release hex-body of spark plug from vise. 13. Replace burner strap onto combus- tion chamber. 14. Attach spark plug wire to spark plug. 15. Attach fuel and air line hoses to nozzle assembly. 16. Replace fan (see page 9). 17. Replace fan guard and upper shell. 45 ° Burner Strap Figu[...]

  • Page 11

    11 102437 50 ROTOR PFA/P 056 Pump Rotor (Procedure if rotor is binding) 1. Remove upper shell (see page 9). 2. Remove filter end cover screws using 5/16" nut-driver. 3. Remove filter end cover and air filters. 4. Remove pump plate screws using 5/16" nut-driver. 5. Remove pump plate. 6. Remove rotor, insert, and blades. 7. Check for deb[...]

  • Page 12

    12 102437 TECHNICAL SER VICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-323- 5190. Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. Parts Under Warranty Contact auth[...]

  • Page 13

    13 102437 MAINTENANCE KITS Btu/Hr 35,000 50,000 55,000 Flame-Out Control Part No. HA3003 HA3003 HA3003 Spark Plug Part No. HA3013 HA3013 HA3013 Filter Kit Part No. HA3014 HA3014 HA3014 Nozzle Kit Part No. HA3006 HA3021 HA3021 Rotor/Air Pump Kit Part No. HA3004 HA3005 HA3005 Photocell Part No. HA3019 HA3019 HA3019 Pump Adjustment Part No. HA3020 HA3[...]

  • Page 14

    14 102437 ILLUSTRA TED P ARTS BREAKDOWN Motor and Pump Assembly 12-11 12-18 12-17 12-16 12-15 12-14 12-13 12-12 12-10 12-1 12-2 12-3 12-4 12-5 12-6 12-7 12-8 12-9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 9-1 9-2 9-3 9-4 9-5 17 18 19 20 21 22 23 24 25 26 27 30 31 32 33 36 37 38 39 28 29 34 35 40[...]

  • Page 15

    15 102437 20 101205-01 Motor Bracket 1 21 M30865-02 Bushing 2 22 M11271-8 Clip Nut 6 23 M50104-02 Bushing 1 24 M11084-26 Screw, #10-16 x 3/8" 6 25 M10908-14 Screw, #8-32 x 3/8" 1 26 098511-18 Lower Shell (white) 1 098511-12 Lower Shell (yellow) 1 098511-81 Lower Shell (black) 1 27 M29652-04 Rubber Airline 1 28 102482-01 Ignitor Kit 1 29 M[...]

  • Page 16

    W ARRANTY AND REP AIR SER VICE WARRANTY SERVICE Should your heater require service, return it to your nearest authorized service center. Proof of purchase must be presented with the heater. The heater will be inspected. A defect may be caused by faulty materials or workman- ship. If so, DESA International will repair or replace the heater without c[...]