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Master H.S.I. Series Owner's Manual

Portable forced air heater
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R
PORTABLE
FORCED
AIR HEATERS
OWNER'S MANUAL
Heater Sizes: 30,000 70,000 90,000 150,000 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.

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Summary of Contents for Master H.S.I. Series

  • Page 1 PORTABLE FORCED AIR HEATERS OWNER’S MANUAL Heater Sizes: 30,000 70,000 90,000 150,000 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.

  • Page 2: Table Of Contents

    CONTENTS SECTION Safety Information ... 3 Product Identification ... 4 Unpacking ... 5 Assembly ... 5 Theory of Operation ... 6 Fuels ... 6 Ventilation ... 7 Operation ... 7 Storage ... 8 Preventative Maintenance Schedule ... 8 Troubleshooting ... 9 Service Procedures ...

  • Page 3: Safety Information

    SAFETY INFORMATION 099605 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. Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea.

  • Page 4: Product Identification

    PRODUCT IDENTIFICATION Hot Air Outlet Upper Shell Lower Shell Fuel Tank Side Cover Flame-Out Control Reset Button Power Cord (EDI Model Only) Figure 1 - 30/70,000 BTU/Hr Models Hot Air Outlet Lower Shell Fuel Cap Side Cover Figure 2 - 90,000 BTU/Hr Model Hot Air Outlet Lower...

  • Page 5: Unpacking

    UNPACKING ASSEMBLY (For 90,000 and 150,000 BTU/Hr Models Only) 099605 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.

  • Page 6: Theory Of Operation

    THEORY OF OPERATION Clean Heated Air Out Fuel Tank FUELS 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.

  • Page 7: Ventilation

    VENTILATION OPERATION 099605 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.

  • Page 8: Storage

    OPERATION Continued STORAGE PREVENTATIVE MAINTENANCE SCHEDULE Flame-Out Control Reset Button (Fan Guard Removed) Figure 8 - Flame-Out Control Reset Button, 150,000 BTU/Hr EDI Model To Stop Heater 1. Unplug power cord from outlet. To Restart Heater 1. Wait 2 minutes after stopping heater. 2.

  • Page 9: Troubleshooting

    Continued TROUBLE- SHOOTING 099605 Item How Often Spark plug Clean and regap every 600 hours operation or replace as needed. Fan blades Clean every season or as needed. See Fan, page 19. Motor Not required/permanently lubricated Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur.

  • Page 10: Service Procedures

    SERVICE PROCEDURES 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. Fuel Filter (30/70,000 BTU/Hr Models) 1. Remove side cover screws using 5/16"...

  • Page 11: Fuel Filter (90,000 Btu/Hr Model)

    Fuel Filter (90,000 BTU/Hr Model) 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.

  • Page 12: Spark Plug (30,000 Btu/Hr Model)

    Spark Plug (30,000 BTU/Hr Model) 1. Remove upper shell (see page 10). 2. Remove fan (see page 19). 3. Remove fuel and air line hoses from nozzle assembly. 4. Remove spark plug wire from spark plug. 5. Remove two screws using 5/16"...

  • Page 13: Spark Plug (70/90/150,000 Btu/Hr Models)

    Spark Plug (70/90/150,000 BTU/Hr Models) 1. Remove upper shell (see page 10). 2. Remove fan (see page 19). 3. Remove spark plug wire from spark plug. 4. Remove spark plug from burner head using 13/16" open-end wrench. 5. Clean and regap spark plug electrodes to .055"...

  • Page 14: Air Output, Air Intake, And Lint Filters

    Air Output, Air Intake, and Lint Filters 1. Remove upper shell (see page 10). 2. Remove filter end cover screws using 5/16" nut- driver. 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).

  • Page 15: Nozzle (30,000 Btu/Hr Model)

    Nozzle (30,000 BTU/Hr Model) 1. Remove upper shell (see page 10). 2. Remove fan (see page 19). 3. Remove fuel and air line hoses from nozzle assem- bly. 4. Turn nozzle assembly 1/4 turn to left and pull toward motor to remove. 5.

  • Page 16: Nozzle (70/90,000 Btu/Hr Models)

    Nozzle (70/90,000 BTU/Hr Models) 1. Remove upper shell (see page 10). 2. Remove fan (see page 19). 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"...

  • Page 17: Nozzle (150,000 Btu/Hr Model)

    Nozzle (150,000 BTU/Hr Model) 1. Remove upper shell (see page 10). 2. Remove fan (see page 19). 3. Remove spark plug wire from spark plug. 4. Remove spark plug from burner head using 13/16" open-end wrench. 5. Loosen flare nut using 3/4"...

  • Page 18: Pump Rotor

    Pump Rotor (Procedure if rotor is binding) 1. Remove upper shell (see page 10). 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.

  • Page 19: 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. 1. Remove upper shell (see page 10). 2. Use 1/8" allen wrench to loosen setscrew which holds fan to motor shaft.

  • Page 20: Wiring Diagrams

    WIRING DIAGRAMS White Spark Plug Orange Ignitor Motor Green/ Yellow Figure 37 - Wiring Diagram, 30,000 BTU/Hr EDI Model White Spark Plug Orange Ignitor Motor Green/ Yellow S or 2 M or 3 Black Motor Start Relay L or 1 Figure 38 - Wiring Diagram, 70/90,000 BTU/Hr EDI Models White Spark Plug...
  • Page 21 WIRING DIAGRAMS 099605 White Motor Green/ Yellow Orange Orange Ignitor Spark Plug Figure 40 - Wiring Diagram, 30,000 BTU/Hr EEI Model White Spark Plug Orange Ignitor Motor Green/ Yellow M or 3 S or 2 Black Motor Start Relay L or 1 Figure 41 - Wiring Diagram, 70/90,000 BTU/Hr EEI Models White Spark Plug...

  • Page 22: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS BREAKDOWN 30,000 BTU/Hr EDI/EEI 18-1 18-2 18-3 18-4 18-18 18-17 18-16 18-15 18-14 Motor and Pump Assembly 18-5 18-6 18-7 18-8 18-9 18-10 18-11 18-12 18-13 11-5 11-4 11-3 14 10 11-1 11-2 099605...
  • Page 23 PARTS LIST 30,000 BTU/Hr EDI/EEI PART PART NUMBER DESCRIPTION M51104-01 Handle 098511-54 Upper Shell M15823-27 Screw, #10-16 x 1/2" 098512-05 Combustion Chamber M51108-01 Heat Shield M11084-29 Screw, #10-16 x 3/4" M16660 Photocell Bracket M10908-2 Screw, #6-32 x 3/8" HA3019 Photocell Assembly 079673-03 Power Cord M15779-27...

  • Page 24: 70,000 Btu/Hr Model

    ILLUSTRATED PARTS BREAKDOWN 70,000 BTU/Hr EDI/EEI Burner Head Assembly 10-1 10-2 10-4 10-5 10-3 10-6 18-1 18-2 18-3 18-4 18-5 18-18 18-17 18-16 18-15 18-14 Motor and Pump Assembly 10-7 18-6 18-7 18-8 18-9 18-10 18-11 18-12 18-13 099605...
  • Page 25 PARTS LIST 70,000 BTU/Hr EDI/EEI PART PART NUMBER DESCRIPTION M51104-01 Handle 098511-54 Upper Shell M15823-27 Screw, #10-16 x 1/2" 098512-12 Combustion Chamber M11084-29 Screw, #10-16 x 3/4" M16660 Photocell Bracket M10908-2 Screw, #6-32 x 3/8" HA3019 Photocell Assembly 079673-03 Power Cord M15779-27 Power Cord Burner Head Assembly...

  • Page 26: 90,000 Btu/Hr Model

    ILLUSTRATED PARTS BREAKDOWN 90,000 BTU/Hr EDI/EEI Burner Head Assembly 13-1 13-3 13-2 13-4 13-18 13-17 13-16 13-15 13-14 Motor and Pump Assembly 13-5 13-6 13-7 13-8 13-9 13-13 13-12 13-10 13-11 099605...
  • Page 27 PARTS LIST 90,000 BTU/Hr EDI/EEI PART PART NUMBER DESCRIPTION 098511-61 Upper Shell M15823-27 Screw, #10-16 x 1/2" 098512-07 Combustion Chamber M16660 Photocell Bracket HA3019 Photocell Assembly M27417 Drain Plug M10908-2 Screw, #6-32 x 3/8" Burner Head Assembly M23103 Nozzle M10659-1 Nozzle Seal Washer M10809-1 Nozzle Seal Spring...

  • Page 28: 150,000 Btu/Hr Model

    ILLUSTRATED PARTS BREAKDOWN 150,000 BTU/Hr EDI/EEI Burner Head Assembly 22-1 22-2 22-3 22-4 22-18 22-17 22-16 22-15 22-14 Motor and Pump Assembly 22-5 22-6 22-7 22-8 22-9 22-10 22-11 22-13 22-12 12 13 34 9 099605...
  • Page 29 PARTS LIST 150,000 BTU/Hr EDI/EEI PART PART NUMBER DESCRIPTION 098511-58 Upper Shell 098068-01 Heat Deflector 098512-02 Combustion Chamber M16660 Photocell Bracket HA3019 Photocell Assembly 099125-02 Terminal Board M10908-2 Screw, #6-32 x 3/8" Burner Head Assembly M18022 Nozzle M10659-1 Nozzle Seal Washer M10809-1 Nozzle Seal Spring M8882...

  • Page 30: Wheels And Handles (90/150,000 Btu/Hr Models)

    WHEELS AND HANDLES FOR 90,000 AND 150,000 BTU/Hr EDI/EEI MODELS KEY PART NO. NUMBER PART DESCRIPTION HA2203 Handles HA2205 Handles M12345-33 Screw, #10-24 x 1 3/4" M12342-3 Wheel Support Frame M12831-3 Wheel Support Frame NTC-3C Hex Nut, #10-24 097896-01 Wheel M28526 Cap Nut M51015-01...

  • Page 31: Btu/Hr Model

    ACCESSORIES Purchase accessories from your local dealer. 099605 AIR GAUGE KIT - HA1180 For all models. Special tool to check pump pressure. HEAVY DUTY WHEELS AND HANDLE KIT - HA1202 For heavy duty applications. Makes your heater even more portable and convenient. For 30/70,000 BTU/Hr models.

  • Page 32: Warranty And Repair Service

    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:

30,000 btu/hr70,000 btu/hr90,000 btu/hr150,000 btu/hr

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