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Desa D20N Owner's Manual

Desa owner's operation and installation manual portable forced air heaters d20n, d30n, d44n
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PORTABLE
FORCED
AIR HEATERS
OWNER'S MANUAL
Models: D20N, D30N, and D44N
IMPORTANT: Read and understand this manual before assembling, start-
ing or servicing heater. Improper use of heater can cause serious injury.
Keep this manual for future reference.

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Summary of Contents for Desa D20N

  • Page 1 PORTABLE FORCED AIR HEATERS OWNER’S MANUAL Models: D20N, D30N, and D44N IMPORTANT: Read and understand this manual before assembling, start- ing or servicing heater. Improper use of heater can cause serious injury. Keep this manual for future reference.

  • Page 2: Safety Information

    D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS SAFETY INFORMATION WARNINGS IMPORTANT: Read this Owner’s Manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of this heater can cause serious injury or death from burns, fire, explosion, electrical...

  • Page 3: Product Identification

    IDENTIFICATION Hot Air Outlet Upper Shell Lower Shell Fuel Tank Side Cover ON/OFF Switch with Light Figure 1 - D20N Model Hot Air Outlet Lower Shell Fuel Cap Side Cover Figure 2 - D30N and D44N Models 105843 OWNER’S MANUAL...

  • Page 4: Tools Needed

    (rear) of heater is over wheels. Line up holes on fuel tank flange with holes on wheel support frame. 4. For D20N model, place rear handle on top of fuel tank flange. For D30N and D44N models, place front handle and rear handle on top of fuel tank flange.

  • Page 5: Theory Of Operation

    10 seconds (2 minutes if heater has been running). 2. Repeat steps under To Start Heater. ON/OFF Switch with Light Cool Output Filter Figure 5 - ON/OFF Switch, D20N Model ON/OFF Switch with Light Figure 6 - ON/OFF Switch, D30N and D44N Models...

  • Page 6: Storing, Transporting, Or Shipping

    D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS STORING, TRANSPORTING, OR SHIPPING Note: If shipping, transport companies re- quire fuel tanks to be empty. 1. Drain fuel tank. Note: Some models have drain plug on underside of fuel tank. If so, remove drain plug to drain all fuel.
  • Page 7 TROUBLESHOOTING Continued FAULT CONDITION Motor starts and runs but heater does not ignite (ON/OFF switch light remains on) Heater ignites but ignition control assembly shuts heater off after a short period of time (ON/OFF switch light remains on) ON/OFF switch light does not come on when switch is turned to the ON(I) position and heater does not start ON/OFF switch light comes on when switch...

  • Page 8: Service Procedures

    Guard Figure 7 - Upper Shell Removal, D20N Model Fuel Filter Side Cover Figure 9 - Fuel Filter Removal, D20N Model Fuel Filter, Bushing, and Lower Fuel Line Side Cover Figure 10 - Fuel Filter Removal, D30N and D44N Models...
  • Page 9 SERVICE PROCEDURES Continued IGNITOR 1. Remove upper shell and fan guard (see page 8). 2. Remove fan (see page 13). 3. Remove 4 side cover screws with a 5/16" nut driver. Remove side cover (see Figure 9 or 10, page 8). 4.
  • Page 10 filter end cover. Air Intake Filter Lint Filter Air Output Filter Figure 13 - Air Output, Air Intake, and Lint Filters, D20N Model Air Intake Filter Lint Filter Air Output Filter Figure 14 - Air Output, Air Intake, and Lint Filters, D30N and D44N Models...
  • Page 11 8) and the other end to nozzle adapter (see Figure 17, 18,or 19). Route air and fuel line approximately as shown. For D20N model heater, see Figure 17. For D30N model heater, see Figure 18. For D44N model heater, see Figure 19.

  • Page 12: Pump Rotor

    15. Reinstall insert and rotor. 16. Perform steps 10 through 12 above. Blade Insert Rotor Air Output Filter Figure 23 - Rotor Location, D20N Model Insert Rotor Air Output Filter Figure 24 - Rotor Location, D30N and D44N Models Gap Adjusting...
  • Page 13 SERVICE PROCEDURES Continued 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. 1. Remove upper shell (see page 8). 2. Use 1/8" allen wrench to loosen set- screw which holds fan to motor shaft.

  • Page 14: Illustrated Parts Breakdown

    D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS ILLUSTRATED PARTS BREAKDOWN D20N MODEL 12-1 12-2 12-18 12-17 12-16 Motor and Pump Assembly 12-3 12-4 12-5 12-6 12-7 12-15 12-14 12-12 12-8 12-9 12-13 12-10 12-19 12-11 105843...

  • Page 15: Parts List

    PARTS LIST D20N MODEL PART NUMBER DESCRIPTION 105793-01 ON/OFF Switch 098511-264 Upper Shell 079919-01 Switch Cover 102432-01 Screw/Lockwasher, 1/2" 098512-64 Combustion Chamber M10908-2 Screw, #6-32 x 3/8" 103154-03 Photocell Bracket M16656-24 Photocell Assembly Burner Strap Assembly 100735-25 Nozzle Assembly 102548-05...
  • Page 16 D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS ILLUSTRATED PARTS BREAKDOWN D30N MODEL 10-1 10-2 10-3 10-4 10-17 10-16 10-15 10-13 Motor and Pump Assembly 10-5 10-6 10-7 10-8 10-9 10-14 10-13 10-12 10-10 10-11 105843...
  • Page 17 This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the PARTS LIST correct model and serial numbers (from the model plate), then the part number and description of the desired part. D30N MODEL PART NUMBER DESCRIPTION...
  • Page 18 D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS ILLUSTRATED PARTS BREAKDOWN D44N MODEL 10-1 10-2 10-3 10-4 10-17 10-16 10-15 10-18 Motor and Pump Assembly 10-5 10-6 10-7 10-8 10-9 10-14 10-13 10-12 10-10 10-11 105843...
  • Page 19 This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the PARTS LIST correct model and serial numbers (from the model plate), then the part number and description of the desired part. D44N Model PART NUMBER DESCRIPTION...

  • Page 20: Wheels And Handles

    D20N, D30N AND D44N MODELS PORTABLE FORCED AIR HEATERS WHEELS AND HANDLES D20N Model KEY PART PART NUMBER DESCRIPTION HA2203 Handles HA2204 Handles 097198-02 Handles M12345-33 Screw, #10-24 x 1 " M12342-3 Wheel Support Frame M12831-3 Wheel Support Frame 097197-02...

  • Page 21: Specifications

    SPECIFICATIONS Output Rating (Btu/Hr) 70,000 Fuel Use Only Kerosene or No. 1 Fuel Oil Fuel Tank Capacity (U.S. Gal./Liters) 5.0/18.9 Fuel Consumption (Gal. Per Hr./Liters Per Hr.) .52/1.97 Electric Requirements 230 V/50 Hz (Same All Models) Amperage (Normal Run) Hot Air Output (CFM/CMM) 225/6.4 2850 WIRING DIAGRAM...

  • Page 22: Ec Conformity Declaration

    3004 ED Rotterdam Holland Manufacturer: DESA International, Inc. 2701 Industrial Drive Bowling Green, KY 42101 U.S.A. Kerosene Portable Forced Air Heaters Model Numbers: D20N, D30N, and D44N DESA International, Inc. Vice President, Heating Products Engineering Joseph B. Lee Signature 105843...
  • Page 23 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ 105843...

  • Page 24: Warranty Information

    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.

This manual is also suitable for:

D44nD30n

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