ESA 125T Owner's Manual

Portable forced air heaters. 125,000, 170,000 and 200,000 btu/hr kerosene/diesel heater with built-in thermostat

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125,000, 170,000 AND 200,000 BTU/HR
KEROSENE/DIESEL HEATER WITH BUILT-IN 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.
Safety Information ............................................. 2
Unpacking ......................................................... 3
Fuels ................................................................. 3
Theory of Operation .......................................... 4
Ventilation ......................................................... 4
Assembly .......................................................... 4
Operation .......................................................... 5
Operation with Portable Generator ................... 7
Storing, Transporting or Shipping ..................... 7
Fill In For Your Records
Model No.
(Located on side panel)
Serial No.
(Located on fuel tank)
Date of Purchase:
PORTABLE FORCED AIR
HEATERS OWNER'S MANUAL
HEATER SIZES:

TABLE OF CONTENTS

Save this manual for future reference.
For more information, visit www.desatech.com
Preventative Maintenance Schedule ................... 8
Troubleshooting ................................................... 8
Service Procedures ......................................... 10
Specifications .................................................. 15
Wiring Diagrams .............................................. 16
Technical Service ............................................ 17
Replacement Parts .......................................... 17
Accessories ..................................................... 17
Warranty and Repair Service .......................... 28

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Summary of Contents for ESA 125T

  • Page 1: Table Of Contents

    PORTABLE FORCED AIR HEATERS OWNER’S MANUAL HEATER SIZES: 125,000, 170,000 AND 200,000 BTU/HR KEROSENE/DIESEL HEATER WITH BUILT-IN 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.
  • Page 2: Safety Information

    return- ing the heater to service. SAFETY INFORMATION WARNING: This product con- tains and/or generates chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate or service this heater.
  • Page 3 thinner or other highly flammable vapors are e) At no time shall more than one day's present. sup- ply of heater fuel be stored inside 16. Never use heater in living or sleeping areas. a build- ing in the vicinity of the 17.
  • Page 4: Unpacking

    Hot Air Switch Thermostat Handle Outlet Knob Lower Shell Fuel Cap/ Guard Gauge Extension Cord Wrap Shroud Rear Panel Ignition Control Assembly (On Control Cover Inside of Control Fuel Tank Cover) Figure 1 - 125T, 170T and 200T Models www.desatech.com 113170-01E...
  • Page 5: Theory Of Operation

    THEORY OF OPERATION The air pump forces air through the air line. The air is then pushed through the The Fuel System: nozzle. This air causes fuel to be lifted from the tank. A fine mist of fuel is sprayed into the combus- tion chamber.
  • Page 6: Operation

    ASSEMBLY Continued Hot Air Outlet Air Inlet Shroud Rear Panel Handle Shroud Axle Hole Washer Wheel Extension Spacer Cord Wrap Washer Wheel Cap Nut Extended Hub Screw Axle Figure 3 - Wheel and Handle Assembly OPERATION 6. Plug extension cord into standard 120 volt/60 hertz, 3-prong grounded outlet.
  • Page 7 OPERATION LED Indicator Lights These models are equipped with LED lights in order Continued to help monitor your heater and to help diagnose RL, RE AND PKHD SERIES MODELS any potential problems associated with your heater. ONLY Make sure you have read all of the instructions and see Troubleshooting, page 8, before attempting to Temperature Display rectify any problems with your heater.
  • Page 8: Operation With Portable Generator

    OPERATION WITH STORING, PORTABLE GENERATOR TRANSPORTING OR SHIPPING WARNING: Before operating Note: If shipping, transport companies require heater or any appliance from a fuel tanks to be empty. portable generator, verify that 1. Remove drain plug from bottom side of fuel generator has been properly con- tank and drain all fuel.
  • Page 9: Preventative Maintenance Schedule

    PREVENTATIVE MAINTENANCE SCHEDULE WARNING: Never service heater while it is plugged in, operating or hot. Severe burns and electrical shock can occur. Item How Often How To Fuel tank Flush every 150-200 hours of operation See Storing, Transporting, or or as needed Shipping, page 7 Air output and lint filters Replace every 500 hours of operation...
  • Page 10 TROUBLESHOOTING Continued FAULT CONDITION POSSIBLE CAUSE REMEDY Motor starts and runs but heater does not ignite INDICATOR LIGHT 1. No fuel in tank 1. Fill tank with kerosene • Flame 2. Pump pressure incorrect 2. See Pump Pressure Adjust- ment, page 10 3.
  • Page 11: Service Procedures

    SERVICE PROCEDURES AIR OUTPUT, AIR INTAKE AND LINT FILTERS WARNING: To avoid risk of 1. Remove upper shell (see Figure 7). burn and electrical shock, never 2. Remove filter end cover screws using 5/16" attempt to service heater while it nut-driver (see Figure 10).
  • Page 13 IGNITOR Pressure 1. Remove upper shell (See Upper Shell Re- Pump Gauge moval, page 10). Model Pressure 125T 6.0 PSI 2. Remove fan (see page 10). 170T 6.0 PSI 3. Remove 2 control cover screws with a phil- 200T 6.2 PSI lips screwdriver.
  • Page 14 Figure 14 - Disconnecting Ignitor Wires from Ignition Control Assembly (170T Model Shown) www.desatech.com 113170-01E...
  • Page 15 Ignitor Element Nozzle Fuel Line Photocell Adapter Hose Bracket Bracket Air Line Hose Figure 17 - Removing Air and Fuel Line Hoses (125T and 170T Models Only) Combustion Nozzle Adapter Combustion Chamber Nozzle/ Bracket Opening Chamber Adapte Assembly Figure 15 - Ignitor HA1000 Replacement Figure 18 - Removing Nozzle/Adapter www.desatech.com...
  • Page 16: Specifications

    Assembly www.desatech.com 113170-01E...
  • Page 17: Wiring Diagrams

    SERVICE PROCEDURES Combustion Chamber Continued Nozzle 5. Place plastic hex-body into vise and lightly Adapter tighten. Bracket 6. Carefully remove nozzle from the nozzle adapter using 5/8" socket wrench (see Figure 19). Photocell 7. Blow compressed air through face of nozzle. Bracket Nozzle/ This will free any dirt in nozzle area.
  • Page 18: Technical Service

    Figure 21 - Nozzle and Nozzle Adapter FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING 1. Remove upper shell (see Upper Shell Re- moval, page 10). 2. Remove control cover screws using phillips screwdriver (see Figure 13, page 11). 3. Remove control cover. 4.
  • Page 19: Illustrated Parts Breakdown And Parts List

    SERVICE PROCEDURES Pump Plate Blade Continued Intake Note: Route hoses as shown in Figure 17, page Filter Filter End 12 or Figure 20 according to model. Hoses are Cover not to touch photocell bracket. 6. Replace control cover. Insert 7. Replace upper shell (see Upper Shell Removal, page 10).
  • Page 20: Specifications

    SPECIFICATIONS Model Size 125T 170T 200T Output Rating (Btu/Hr) 125,000 170,000 200,000 Fuel Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels* 13.5/51 13.5/51 13.5/51 Fuel Tank Capacity (U.S. Gal./Liters) Fuel Consumption (Gal. Per Hr/Liters Per Hr) .90/3.41 1.25/4.73...
  • Page 21 www.desatech.com 113170-01E...

This manual is also suitable for:

170t200t

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