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PORTABLE
FORCED
AIR HEATERS
OWNER’S MANUAL
100 SIDE FRONT HANDLES PFA/PV 003
150 SIDE FRONT HANDLE PFA/PV 007
Heater Sizes:
35,000 50,000 55,000 70,000 100,000 110,000 150,000 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.
®
G 004
ARL LOGO
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SECTION PAGE CONTENTS Safety Information......................................................................... 2 Product Identification .................................................................... 4 Unpacking ..................................................................................... 5 Assembly ....................................................................................... 5 Theory of Operation ...................................................................... 6 F
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SAFETY WARNINGS (Continued) • Use only kerosene or No. 1 fuel oil to avoid risk of fire or explosion. Never use INFORMATION gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels. Continued • Fueling a) Personnel involved with fueling shall be qualified and thoroughly familiar with the manufacturer's instructions and applicable federal, state, and local regula- tions regarding the safe fueling of heating units. b) Only the type of fuel specified on the heater's data plate shal
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PRODUCT Hot Air Outlet Handle IDENTIFICATION Upper Shell Fan Guard Lower Shell Air Filter End Cover Fuel Tank Fuel Cap Side Cover Flame-Out Control Reset Button Power Cord 35/50/70,000 BTU/HR DOMESTIC PFA/PV 042 Figure 1 - 35/50/55/70,000 BTU/Hr Models Hot Air Outlet Upper Shell Lower Shell Fuel Cap Fan Guard Fuel Tank Side Cover Power Cord Flame-Out Control Reset 100,000 BTU/HR DOMESTIC PFA/PV 043 Button Figure 2 - 100/110/150,000 BTU/Hr Models 4 099176
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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 shipping damage. If heater is damaged, promptly inform dealer where you bought heater. These models are furnished with wheels and a front handle. Some models are ASSEMBLY furnished with a rear handle also. Wheels, handle(s), and the mounting hardware (For 100,000, 110,000, and are found in the shipping carton. 150,000 BTU/Hr Models Only) Tools Needed • Medium Phillips Screwdr
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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. OPERATION 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. The Ignition System: The electronic ignitor sends voltage to the spark plug. The spark plug igni
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VENTILATION ! WARNING 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 at least a three-square-foot opening of fresh, outside air for each 100,000 BTU/Hr rating. Provide extra fresh air if more heaters are being used. Example: A 150,000 BTU/Hr heater requires one of the following: • a two-car garage door raised
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To Stop Heater OPERATION 1. Unplug extension cord from outlet. Continued To Restart Heater 1. Wait two minutes after stopping heater. 2. Repeat steps under To Start Heater, page 7. 1. Drain fuel tank. STORAGE Note: Some models have drain plug on underside of fuel tank. If so, remove drain plug to drain all fuel. If heater does not have drain plug, drain fuel through fuel cap opening. Be sure all fuel is removed. 2. Replace drain plug if used. 3. Add one gallon of clean kerosene to fuel tank. 4.
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TROUBLE- WARNING ! SHOOTING Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. OBSERVED FAULT POSSIBLE CAUSE REMEDY Heater ignites, but Wrong pump pressure See Pump Pressure Adjustment, page 11. flame-out control shuts off heater after Dirty air output, air intake See Air Output, Air Intake a short period of and lint filters and Lint Filters, page 10. time. Dirty fuel filter See Fuel Filter, page 11. Dirt in nozzle See Nozzle, page
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SERVICE ! WARNING 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 Fan Fan 1. Remove screws along each side of Guard Guard heater using 5/16" nut-driver. These screws attach upper and lower shells together. 2. Lift upper shell off. 3. Remove fan guard. Fan Figure 7 - Upper Shell Removal, Figure 8 - Upper Shell Removal, IMPORTANT: Remove fan from 35/50/55/70,000 BTU/Hr Models 100/110
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Pump Pressure (35/50/55/70,000 BTU/Hr Models Shown) Adjustment 1. Remove pressure gauge plug from Relief Pressure filter end cover. Valve Gauge 2. Install accessory pressure gauge Plug (part number HA1180). 3. Start heater (see Operation, page Pressure 7). Allow motor to reach full speed. Gauge Figure 13 - Pressure Gauge Plug Removal 4. Adjust pressure. Turn relief valve Pump to right to increase pressure. Turn Model Pressure relief valve to left to decrease 35,000 BTU/Hr 3.0 PSI pressure. See sp
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11.Tighten spark plug with spark plug 45° Burner mounting nut. Strap 12.Release hex-body of spark plug from vise. 13.Replace burner strap onto combustion chamber. 14.Attach spark plug wire to spark plug. 15.Attach fuel and air line hoses to nozzle assembly. Figure 19 - Spark Plug Rotation, 35/50/55,000 BTU/Hr Models Only 16.Replace fan (see page 10). 17.Replace fan guard and upper shell. Burner Spark Plug Head Spark Plug (70/100/110/150,000 BTU/Hr Models) Wire 1. Remove upper shell (see page 10)
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Nozzle (70/100/110/150,000 BTU/Hr Models) Combustion Spark Plug 1. Remove upper shell (see page 10). Wire Chamber Burner Head 2. Remove fan (see page 10). 3. Remove fuel and air line hoses from burner head. 4. Remove spark plug wire from spark Screw plug. 5. Remove spark plug from burner Spark Plug head using 13/16" open-end wrench. 6. Remove three (3) screws using Fuel Line Hose Air Line Hose 5/16" nut-driver and remove burner head from combustion chamber. 7. Place burner head into vise and Fig
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Gap Adjusting Screw (Pump Rotor, continued) 10.Install blades, pump plate, air filters, and filter end cover. .003"/.004" Gap Sandpaper 11.Replace fan guard and upper shell. Measured With 12.Adjust pump pressure (see page 11). Feeler Gauge Note: If rotor is still binding, proceed as follows. Blade 13.Perform steps 1 through 6 (see page Rotor 13). 14.Place fine grade sandpaper (600 grit) Gap Adjusting Screw Figure 30 - Sanding Rotor on flat surface. Sand rotor lightly in Figure 29 - Gap Adjusting Scr
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BTU/Hr 35,000 50,000 55,000 70,000 100,000 110,000 150,000 MAINTENANCE Flame-Out Control KITS Part No. HA3003 HA3003 HA3003 HA3003 HA3003 HA3003 HA3003 Spark Plug Part No. HA3013 HA3013 HA3013 HA3012 HA3012 HA3012 HA3012 Filter Kit Part No. HA3014 HA3014 HA3014 HA3014 HA3017 HA3017 HA3017 Nozzle Kit Part No. HA3006 HA3007 HA3021 HA3008 HA3009 HA3022 HA3010 Rotor/Air Pump Kit Part No. HA3004 HA3004 HA3005 HA3004 HA3004 HA3004 HA3004 Handle Part No. — — — — HA2203 HA2203 HA2204 Photoc
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WARRANTY AND REPAIR SERVICE WARRANTY SERVICE LIMITED WARRANTY Should your heater require service, return it to your nearest authorized service center. Proof of purchase must DESA International warrants this product and any be presented with the heater. The heater will be inspected. parts thereof, to be free from defects in materials and A defect may be caused by faulty materials or workman- workmanship for six (6) months from the date of first ship. If so, DESA International will repair or replac
