Owner's Manual

ManualsBrandsDesa Tech ManualsHeatersDesa Tech M200VT

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.

Heater Sizes:

125,000 and 170,000 Btu/Hr Thermostat

100,000 140,000 and 200,000 Btu/Hr Variable Output with Thermostat

PORTABLE FORCED

AIR HEATERS

OWNER’S MANUAL

TABLE OF CONTENTS

SAFETY INFORMATION ............................................................ 2

PRODUCT IDENTIFICATION ..................................................... 3

UNPACKING ............................................................................... 3

FUELS......................................................................................... 3

VENTILATION ............................................................................. 3

THEORY OF OPERATION ......................................................... 4

ASSEMBLY ................................................................................. 4

OPERATION ............................................................................... 5

OPERATION WITH PORTABLE GENERATOR.......................... 6

STORING, TRANSPORTING, OR SHIPPING............................ 7

PREVENTATIVE MAINTENANCE SCHEDULE ......................... 7

TROUBLESHOOTING ................................................................ 8

SERVICE PROCEDURES .......................................................... 9

SPECIFICATIONS .................................................................... 17

WIRING DIAGRAMS................................................................. 17

ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 18

WHEELS AND HANDLE PARTS LIST...................................... 24

TECHNICAL SERVICE ............................................................. 25

REPLACEMENT PARTS .......................................................... 25

ACCESSORIES ........................................................................ 25

WARRANTY AND REPAIR SERVICE ........................ Back Cover

Save this manual for future reference.

For more information, visit www.desatech.com

Fill In For Your Records

Model No. ___________________

(Located on side panel)

Serial No. ___________________

(Located on fuel tank)

Date of Purchase: ______________

Summary of content (26 pages)

PAGE 1
TM PORTABLE FORCED AIR HEATERS OWNER’S MANUAL For more information, visit www.desatech.com Heater Sizes: 125,000 and 170,000 Btu/Hr Thermostat 100,000 140,000 and 200,000 Btu/Hr Variable Output with Thermostat 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. TABLE OF CONTENTS SAFETY INFORMATION ............................................................
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SAFETY INFORMATION SAFETY INFORMATION 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. DANGER: Carbon monoxide poisoning may lead to death! • • • • • Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, and/or nausea.
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PRODUCT IDENTIFICATION UNPACKING FUELS VENTILATION PRODUCT IDENTIFICATION Upper Shell Heat Output Knob Hot Air Outlet UNPACKING Handle Thermostat Knob Lower Shell Fan Guard Fuel Cap/ Gauge 3 3 1. 2. 3. Remove all packing items applied to heater for shipment. Remove all items from carton. Check items for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.
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THEORY OF OPERATION ASSEMBLY THEORY OF OPERATION The Fuel System: The air pump forces air through the air line. The air is then pushed through the nozzle. This air causes fuel to be lifted 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 chamber. This air is heated and provides a stream of clean, hot air. The Ignition System: The ignition control assembly provides power to the ignitor.
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OPERATION OPERATION (Thermostat Models) IMPORTANT: Review and understand the warnings in the Safety Information section, page 2. They are needed to safely operate this heater. Follow all local ordinances and codes when using this heater. OPERATION (Variable Output with Thermostat Models) IMPORTANT: Review and understand the warnings in the Safety Information section, page 2. They are needed to safely operate this heater. Follow all local ordinances and codes when using this heater. TO START HEATER 1. 2.
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OPERATION OPERATION WITH PORTABLE GENERATOR OPERATION (Variable Output with Thermostat Models) Continued Automatic Mode of Operation TO STOP HEATER 1. 2. 3. 4. Push ON/OFF switch to the OFF (O) position. Set the HEAT OUTPUT Knob to the AUTO setting. Set the THERMOSTAT Knob to the desired temperature. Push ON/OFF switch to the ON (|) position. Light will come on. If the thermostat is calling for heat (ie.
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STORING, TRANSPORTING, OR SHIPPING PREVENTATIVE MAINTENANCE SCHEDULE 7 7 STORING, TRANSPORTING, OR SHIPPING Note: If shipping, transport companies require fuel tanks to be empty. 1. Remove drain plug from bottom side of fuel tank and drain all fuel. 2. Replace drain plug. 3. If any debris is noted in old fuel, add 1 or 2 quarts of clean kerosene to tank, stir, and drain again. This will prevent excess debris from clogging filters during future use. 4. Properly dispose of old and dirty fuel.
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TROUBLESHOOTING TROUBLESHOOTING WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. FAULT CONDITION POSSIBLE CAUSE REMEDY Motor does not start five seconds after heater is plugged in 1. No power to heater 2. ON/OFF switch not in the ON (|) position 1. Check circuit breaker in electrical panel 2. Verify the ON/OFF switch is in ON (|) position and light is on 3. Turn thermostat knob to a higher setting 3.
PAGE 9
SERVICE PROCEDURES 9 9 SERVICE PROCEDURES WARNING: To avoid risk of burn and electrical shock, never attempt to service heater while it is plugged in, operating, or hot. Setscrew Motor Fan UPPER SHELL REMOVAL 1. 2. 3. Remove screws along each side of heater using phillips screwdriver. These screws attach upper and lower shells together. See Figure 6. Lift upper shell off. Remove fan guard.
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SERVICE PROCEDURES 10 SERVICE PROCEDURES Continued PUMP PRESSURE ADJUSTMENT FUEL FILTER 1. 2. 3. 4. 1. 2. 3. 4. 5. 6. 7. Remove fan guard. Remove pressure gauge plug from filter end cover (see Figure 10). Install accessory pressure gauge (part number HA1180). Start heater (see Operation, page 5). Allow motor to reach full speed. For variable output (VT) models, set heat output knob to HI (see Figure 1, page 3). Adjust pressure. Turn relief valve to right to increase pressure.
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SERVICE PROCEDURES 11 11 SERVICE PROCEDURES Continued (For 200VT Model Only) FUEL VALVE 1. 2. 3. 4. (For 200VT Model Only) 5. 6. 7. Remove control cover screws using phillips screwdriver. Remove control cover (see Figure 13). Pull lower fuel line off the fuel valve fitting (see Figure 13). Carefully pry bushing, lower fuel line, and fuel filter out of fuel tank. Wash fuel filter with clean fuel and replace in tank. Attach lower fuel line to fuel valve fitting. Replace control cover.
PAGE 12
SERVICE PROCEDURES SERVICE PROCEDURES Continued IGNITOR 1. 2. 3. 4. 5. 6. 7. Remove upper shell (See Upper Shell Removal, page 9). Remove fan (see page 9). Remove 2 control cover screws with a phillips screwdriver. Remove control cover (see Figure 12, page 10 or Figure 13, page 11, according to model). Disconnect ignitor wires from ignition control assembly (see Figure 15). Pull the ignitor wires up through the hole in the lower shell. Disconnect fuel line hose and air line hose.
PAGE 13
SERVICE PROCEDURES SERVICE PROCEDURES Continued NOZZLE ASSEMBLY (For 125T/170T/100VT/140VT Models Only) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Remove upper shell (see Upper Shell Removal, page 9). Remove fan (see Fan, page 9). Remove fuel and air line hoses from nozzle assembly (see Figure 17). Turn nozzle assembly 1/4 turn to left and pull toward motor to remove (see Figure 18). Place plastic hex-body into vise and lightly tighten.
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SERVICE PROCEDURES SERVICE PROCEDURES Continued (For 200VT Model Only) 1. Remove combustion chamber and ignitor by following steps 1 through 7 under Ignitor, page 12. 2. Carefully place the ignitor in a safe location. 3. Remove two nozzle adapter bracket screws (see Figure 20). 4. Place hex-shaped aluminum nozzle adapter into vise (do not overtighten). 5. Carefully remove nozzle from nozzle adapter using 5/8" socket wrench (see Figure 21). 6. Blow compressed air through face of nozzle.
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SERVICE PROCEDURES 15 15 SERVICE PROCEDURES Continued Blade PUMP ROTOR (Procedure if Rotor is Binding) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Remove upper shell (see Upper Shell Removal, page 9). Remove fan guard. Remove filter end cover screws using 5/16" nut driver (see Figure 23). Remove filter end cover and air filters. Remove pump plate screws using 5/16" nut-driver. Remove pump plate. Remove rotor, insert, and blades (see Figure 23). Check for debris in pump.
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SERVICE PROCEDURES SERVICE PROCEDURES Continued IGNITION CONTROL ASSEMBLY (Thermostat Models) IGNITION CONTROL ASSEMBLY (Variable Output with Thermostat Models) WARNING: High voltage! 1. 2. 3. 4. 5. 6. 7. WARNING: High voltage! Unplug heater. Remove control cover screws (2) using phillips screwdriver to expose ignition control assembly. Remove fuse cover. Remove fuse from fuse clips. Replace with new fuse (DESA part number 105880-02). Do not substitute a fuse with a higher current rating.
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SPECIFICATIONS WIRING DIAGRAMS 17 17 SPECIFICATIONS Model Size 125T 170T 100VT Output Rating (Btu/Hr) Fuel Fuel Tank Capacity (U.S. Gal./Liters) Fuel Consumption (Gal. Per Hr/Liters Per Hr) Pump Pressure (psi) 125,000 170,000 65,000-100,000 100,000-140,000 Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels* 140,000-200,000 13.5/51 13.5/51 13.5/51 13.5/51 13.5/51 .90/3.41 6.0 1.25/4.73 6.0 .50-.75/1.89-2.84 6.5 .75-1.05/2.84-3.97 6.5 1.05-1.40/3.97-5.30 6.
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ILLUSTRATED PARTS BREAKDOWN 125T and 170T Models ILLUSTRATED PARTS BREAKDOWN 2 7-1 1 125T and 170T MODELS 7-2 7-6 7-3 3 7-4 7-5 9 7 10 5 4 6 8 23 11 19 24 12 15 2 23 25 43 26 31 36 29 20 37 40 14 32 33 22 21 42 35 38 2 13 28 41 18 39 2 16 30 10-1 2 10-2 27 10-3 34 44 10-4 10-5 17 10-6 10-17 10-7 10-16 10-8 10-15 10-9 10-13 10-10 10-11 10-14 10-13 Motor and Pump Assembly 10-12 For more information, visit www.desatech.
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PARTS LIST 125T and 170T Models 19 19 PARTS LIST 125T and 170T MODELS This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the correct model and serial numbers (from the model plate), then the part number and description of the desired part. KEY NO. PART NUMBER 1 107353-01 2 3 4 5 6 7 7-1 7-2 7-3 7-4 7-5 7-6 8 9 10 10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-10 10-11 10-12 10-13 10-14 10-15 10-16 10-17 11 ∆ ** DESCRIPTION QTY.
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ILLUSTRATED PARTS BREAKDOWN 100VT and 140VT Models ILLUSTRATED PARTS BREAKDOWN 2 1 7-1 7-2 7-6 100VT and 140VT MODELS 7-3 3 7-4 7-5 9 7 10 5 4 38 6 23 8 23 11 19 13 24 12 15 2 23 25 42 26 36 31 20 41 29 37 33 22 21 43 43 14 32 35 2 40 28 18 39 2 16 30 2 10-1 27 10-2 34 44 10-3 10-4 10-5 17 10-6 10-15 10-7 10-14 10-8 10-13 10-9 10-11 10-12 10-11 Motor and Pump Assembly 10-10 For more information, visit www.desatech.
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PARTS LIST 21 21 100VT and 140VT Models PARTS LIST 100VT and 140VT MODELS This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the correct model and serial numbers (from the model plate), then the part number and description of the desired part. KEY NO. PART NUMBER 1 107353-01 2 3 4 5 6 7 7-1 7-2 7-3 7-4 7-5 7-6 8 9 10 10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-10 10-11 10-12 10-13 10-14 10-15 11 12 ∆ ** DESCRIPTION QTY.
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ILLUSTRATED PARTS BREAKDOWN 200VT Model ILLUSTRATED PARTS BREAKDOWN 2 1 200VT MODEL 3 9 7 10 5 4 42 6 23 8 23 11 19 37 24 12 15 7-1 23 13 2 25 18 7-2 31 26 39 36 29 21 45 33 7-8 20 44 45 14 32 35 7-9 7-7 7-3 40 22 2 7-4 7-5 41 28 43 7-6 7-10 38 2 16 7-11 30 Nozzle Assembly 2 27 10-1 34 10-2 46 10-3 17 10-4 10-5 10-6 10-16 39-1 10-7 10-15 39-4 10-8 39-6 39-5 10-14 10-9 10-13 10-12 39-4 10-11 Motor and Pump Assembly 10-10 Fuel Valve Assemb
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PARTS LIST 200VT Model PARTS LIST 23 23 This list contains replaceable parts used in your heater. When ordering parts, be sure to provide the correct model and serial numbers (from the model plate), then the part number and description of the desired part. 200VT MODEL KEY NO. PART NUMBER 1 107353-01 2 3 4 5 6 7 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 7-9 7-10 7-11 8 9 10 10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-10 10-11 10-12 10-13 10-14 10-15 10-16 11 12 13 14 15 16 ∆ ** DESCRIPTION QTY.
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WHEELS AND HANDLE 24 WHEELS AND HANDLE WHEELS AND HANDLE PARTS LIST KEY NO. 1 2 3 4 5 6 7 8 PART NUMBER 108459-01 WP 4C 108630-01 108463-01 108466-01 108468-01 107426-01 C3-8C PART DESCRIPTION Handle/Support Washer Screw Extension Cord Wrap Axle Washer Wheel Kit Cotter Pin QTY. 1 6 6 2 1 4 2 2 1 2 3 4 5 6 8 7 For more information, visit www.desatech.
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TECHNICAL SERVICE REPLACEMENT PARTS ACCESSORIES 25 25 TECHNICAL SERVICE ACCESSORIES You may have further questions about installation, operation, or troubleshooting. Purchase accessories and parts from your nearest dealer or service center. If they can not supply these accessories or parts, either contact your nearest parts dealer or DESA International at 1-866-672-6040 for referral information. Parts Centrals are listed in the Authorized Service Center booklet supplied with heater.
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WARRANTY AND REPAIR SERVICE LIMITED WARRANTY DESA International warrants this product and any parts thereof, to be free from defects in materials and workmanship for two (2) years from the date of first purchase when operated and maintained in accordance with instructions. This warranty is extended only to the original retail purchaser, when proof of purchase is provided. This warranty covers only the cost of parts and labor required to restore the product to proper operating condition.