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Spark Plug Combustion (8,8 kW [30,000 Btu/Hr] Model) Chamber 1. Remove upper shell (see page 10). 2. Remove fan (see page 19). 3. Remove fuel and air line hoses from nozzle Spark Plug Burner assembly. Mounting Nut Strap Spark 4. Remove spark plug wire Plug Spark Plug from spark plug. Wire 5. Remove two screws using 5/16" nut-driver and remove burner strap. 6. Place hex-body of spark plug into vise and tighten. 7. Remove spark plug Nozzle mounting nut using 11/16" Assembly open-end wrench. 8. Rem
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Spark Plug (20,5/26,4 kW [70/90,000 Btu/Hr] Model Shown) (20,5/26,4/44 kW [70/90/150,000 Burner Btu/Hr] Models) Spark Plug Wire 1. Remove upper shell (see Head 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" Spark open-end wrench. Plug 5. Clean and regap spark plug electrodes to .055" (1.4 mm) gap. 6. Install spark plug in burner head. 7. Attach spark plug wire to Figure 18 - Spark Plug Removal, 20,5/26,4/44 kW
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Air Intake Filter Air Output, Air Intake, Filter End and Lint Filters Cover Fan Guard 1. Remove upper shell (see page 10). 2. Remove filter end cover screws using 5/16" nut- driver. Lint Filter 3. Remove filter end cover. Air Output 4. Replace air output and lint Filter filters. 5. Wash or replace air intake filter (see Preventative Maintenance Schedule, Figure 20 - Air Output, Air Intake, and Lint Filters, page 8). 8,8/20,5 kW (30/70,000 Btu/Hr) Models Fan Guard 6. Replace filter end cover. Air Inta
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Combustion Nozzle Chamber (8,8 kW [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 Nozzle turn to left and pull toward Assembly motor to remove. 5. Place plastic hex-body into vise and lightly tighten. 6. Carefully remove nozzle from the nozzle adapter Fuel Line Hose using 5/8" socket wrench. Air Line Hose 7. Blow compressed air thru face of nozzle. This will Figure 24 -
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Nozzle (20,5/26,4 kW [70/90,000 Btu/Hr] Combustion Models) Chamber 1. Remove upper shell (see page 10). 2. Remove fan (see page 19). 3. Remove fuel and air line Spark Plug hoses from burner head. Burner Head Wire 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 Screw 5/16" nut-driver and Spark remove burner head from Plug combustion chamber. 7. Place burner head into vise and lightly tighten. Air Line Hose
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Nozzle (44 kW [150,000 Btu/Hr] Model) Combustion 1. Remove upper shell (see Chamber page 10). 2. Remove fan (see page 19). 3. Remove spark plug wire from spark plug. Spark Plug 4. Remove spark plug from Burner Head Wire burner head using 13/16" open-end wrench. 5. Loosen flare nut using 3/4" open-end wrench. Push fuel tube down. 6. Remove air line hose from Screw burner head. Spark Plug 7. Remove three screws using 5/16" nut-driver and remove burner head from combustion chamber. Air Line Hose Fla
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PORTABLE
FORCED
AIR HEATERS
OWNER’S MANUAL
Heater Sizes: 8,8 (30,000) 20,5 (70,000)
26,4 (90,000) 44 kW (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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SECTION PAGE CONTENTS Safety Information .................................................................................. 3 Product Identification ............................................................................. 4 Unpacking............................................................................................... 5 Assembly ................................................................................................ 5 Theory of Operation .....................................
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SAFETY WARNINGS WARNING ICON G 001 INFORMATION 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 WARNING ICON G 001 Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nause
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Hot Air Outlet Handle PRODUCT Upper Shell IDENTIFICATION Fan Guard Lower Shell Air Filter End Cover Fuel Tank Fuel Cap Side Cover Flame-Out Control Reset Button Power Cord Figure 1 - 8,8/20,5 kW (30/70,000 Btu/Hr) Models Hot Air Outlet Upper Shell Lower Shell Fuel Cap Fan Guard Fuel Tank Side Cover Flame-Out Power Cord Control Reset Button Figure 2 - 26,4 kW (90,000 Btu/Hr) Model Upper Shell Hot Air Outlet Lower Shell Air Filter Fuel Cap End Cover Fan Guard Fuel Tank Flame-Out Control Reset Butt
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1. Remove all packing items applied to heater for shipment. UNPACKING 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 ASSEMBLY mounting hardware are found in the shipping carton. (For 26,4 and 44 kW [90,000 Tools Needed and 150,000 Btu/Hr] Models Only) • Medium Phillips Screwdriver • 3/8" Open or Adjustable Wrench • Hammer 1.
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Blade Air Pump Rotor Pump Intake (Procedure if rotor is binding) Plate Filter 1. Remove upper shell (see Filter End page 10). Cover 2. Remove filter end cover Fan Guard (26,4 screws using 5/16" nut- kW [90,000 Btu/ driver. Hr] Model Shown) 3. Remove filter end cover Insert and air filters. Rotor 4. Remove pump plate Air Output screws using 5/16" nut- Filter driver. 5. Remove pump plate. Figure 31 - Rotor Location, 8,8/20,5 kW (30/70,000 Btu/Hr) Models 6. Remove rotor, insert, and blades. Pump Blade
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Fan IMPORTANT: Remove fan from motor shaft before removing motor from heater. The weight of the motor Fan Setscrew 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. Motor 3. Slip fan off motor shaft. Shaft 4. Clean fan using a soft cloth moistened with kerosene or solvent. 5. Dry fan thoroughly. Figure 35 - Fan, Motor Shaft, and Setscrew Location 6. Replace fan on motor shaft. Place fan
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230V/50Hz WIRING Blue Brown DIAGRAMS Green/Yellow White White B Spark Plug Flame- White Blue Blue Orange Terminal Reset Ignitor Out Motor Board Button Control Photocell Red Red Green/ R Yellow Red Figure 37 - Wiring Diagram, 8,8 kW (30,000 Btu/Hr) Model 230V/50Hz Blue Brown Green/Yellow White White B Spark Plug Flame- Blue Orange White Blue Terminal Reset Ignitor Out Motor Board Button Control Photocell Red Red Green/ R Yellow Red Red S or 2 M or 3 Black Motor Start Relay L or 1 Figure 38 - Wiri
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The Fuel System: The air pump forces air through the air line. The air is then THEORY OF pushed through the burner head nozzle. This air causes fuel to lift from the tank. A OPERATION 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. The spark plug igni
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VENTILATION WARNING WARNING ICON G 001 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 2800 square cm (three square feet) for each 29,3 kW (100,000 Btu/Hr) rating. Provide extra fresh air if more heaters are being used. Example: A 44 kW (150,000 Btu/Hr) heater requires one of t
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OPERATION Flame-Out Continued Control Reset Button (Fan Guard Removed) Figure 8 - Flame-Out Control Reset Button, 44 kW (150,000 Btu/Hr) Model 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. Note: If shipping, transport companies require fuel tanks to be empty. STORING, 1. Drain fuel tank. TRANSPORTING, Note: Some models have drain plug on underside of fuel tank. If so, remove drain plug to
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Continued Item How Often How To Spark plug Clean and regap every 600 See Spark Plug, pages 12 and 13. hours operation or replace as needed. Fan blades Clean every season or as needed. See Fan, page 19. Motor Not required/permanently lubricated TROUBLE- WARNING WARNING ICON G 001 SHOOTING Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. OBSERVED FAULT POSSIBLE CAUSE REMEDY Wrong pump pressure See Pump Pressure Heater ignites, but
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SERVICE WARNING WARNING ICON G 001 PROCEDURES Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Upper Upper Shell Shell Upper Shell Removal 1. Remove screws along each Fan side of heater using 5/16" Guard nut-driver. These screws attach upper and lower shells together. 2. Lift upper shell off. 3. Remove fan guard. Fan Guard Figure 9 - Upper Shell Removal, Figure 10 - Upper Shell Removal, 8,8/20,5 kW (30/70,000 Btu/Hr) 25,4 kW (90,000 Bt
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Fuel Filter, Bushing, Fuel Filter and Lower Fuel Line (26,4 kW [90,000 Btu/Hr] Model) 1. Remove side cover screws Upper using 5/16" nut-driver. Fuel Line 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. Side Cover Figure 13 - Fuel Filter Removal, 26,4 kW (90,000 Btu/Hr) Model Fuel
