Desa 125T Owner's Manual
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Desa 125T Owner's Manual

Portable forced air heaters
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See also: Owner's Manual
For more information, visit www.desatech.com
For more information, visit www.desatech.com
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.

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 .......................... 5
STORING, TRANSPORTING, OR SHIPPING ............................ 5
PREVENTATIVE MAINTENANCE SCHEDULE ......................... 6
Fill In For Your Records
Model No. ___________________
(Located on side panel)
Serial No. ___________________
(Located on fuel tank)
Date of Purchase: ______________
Heater Sizes:
125,000 170,000 and 200,000 Btu/Hr
Save this manual for future reference.
Save this manual for future reference.
PORTABLE FORCED
AIR HEATERS
TM
OWNER'S MANUAL
TROUBLESHOOTING ................................................................ 7
SERVICE PROCEDURES .......................................................... 8
SPECIFICATIONS .................................................................... 13
WHEELS AND HANDLE ........................................................... 18
TECHNICAL SERVICE ............................................................. 19
REPLACEMENT PARTS .......................................................... 19
WIRING DIAGRAM ................................................................... 19
ACCESSORIES ........................................................................ 19
OWNER'S REGISTRATION CARD .......................................... 21
WARRANTY AND REPAIR SERVICE ........................ Back Cover
®

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Summary of Contents for Desa 125T

  • Page 1: Table Of Contents

    PORTABLE FORCED AIR HEATERS OWNER’S MANUAL For more information, visit www.desatech.com For more information, visit www.desatech.com 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. TABLE OF CONTENTS SAFETY INFORMATION ............

  • Page 2: Safety Information

    SAFETY INFORMATION SAFETY INFORMATION WARNINGS • Heater must be grounded. Use only a properly grounded three- IMPORTANT: Read this owner’s manual carefully and wire extension cord. Plug into grounded outlet only. completely before trying to assemble, operate, or ser- • Use only in areas free of flammable vapors or high dust content.

  • Page 3: Product Identification

    Rear Panel Cover Ignition Control Assembly (On Inside of Control Cover) Fuel Tank Figure 1 - 125T, 170T and 200T Models UNPACKING VENTILATION Remove all packing items applied to heater for shipment. WARNING: Provide a fresh air opening of at least Remove all items from carton.

  • Page 4: Theory Of Operation

    THEORY OF OPERATION ASSEMBLY THEORY OF OPERATION ASSEMBLY The air pump forces air through the air line. The These models are furnished with wheels and a rear handle. Wheels, The Fuel System: air is then pushed through the nozzle. This air causes fuel to be lifted handle, and the mounting hardware are found in the shipping carton.

  • Page 5: Operation

    OPERATION OPERATION WITH PORTABLE GENERATOR STORING, TRANSPORTIN, OR SHIPPING OPERATION OPERATION WITH PORTABLE GENERATOR IMPORTANT: Review and understand the warnings in the Safety Information section, page 2. They are WARNING: Before operating heater or any appli- needed to safely operate this heater. Follow all local ordinances and codes when using this heater.

  • Page 6: Preventative Maintenance Schedule

    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 or as needed See Storing, Transporting, or Shipping, page 5 Air output and lint filters Replace every 500 hours of operation or once a year...

  • Page 7: Troubleshooting

    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 1. No power to heater 1. Check circuit breaker in electrical panel heater is plugged in 2.

  • Page 8: Service Procedures

    SERVICE PROCEDURES SERVICE PROCEDURES Setscrew WARNING: To avoid risk of burn and electrical Motor shock, never attempt to service heater while it is Setscrew plugged in, operating, or hot. UPPER SHELL REMOVAL Flush Remove screws along each side of heater using phillips screw- driver.

  • Page 9: Pump Pressure Adjustment

    Plug Upper Fuel Line Figure 9 - Pressure Gauge Plug Removal Pressure Gauge Pump Model Pressure 125T 6.0 PSI 170T 6.0 PSI 200T 6.2 PSI Figure 11 - Fuel Filter Removal Figure 10 - Adjusting Pump Pressure For more information, visit www.desatech.com For more information, visit www.desatech.com...
  • Page 10 Chamber Ignition Bracket Opening Control Assembly Figure 13 - Ignitor Replacement (125T, 170T Model Shown) Control Cover Figure 12 - Disconnecting Ignitor Wires from Ignition Control Assembly (125T, 170T Model Shown) For more information, visit www.desatech.com For more information, visit www.desatech.com...
  • Page 11 Photocell Adapter Hose Bracket Assembly Figure 14 - Removing Air and Fuel Line Hoses (125T and 170T Fuel Line Hose Models Only) Air Line Hose Figure 17 - Removing Air and Fuel Line Hoses (200T Model Only) For more information, visit www.desatech.com For more information, visit www.desatech.com...

  • Page 12: Pump Rotor

    SERVICE PROCEDURES SERVICE PROCEDURES Continued Note: Route hoses as shown in Figure 14 or Figure 17 accord- Carefully remove nozzle from nozzle adapter using 5/8" socket wrench (see Figure 18). ing to model, page 11. Hoses are not to touch photocell bracket. 6.

  • Page 13: Specifications

    “figure 8” motion four times (see Figure 22). 4. Remove fuse from fuse clips. 16. Reinstall insert and rotor. 5. Replace with new fuse (DESA part number 105880-02). 17. Perform steps 10 through 12, page 12. Do not substitute a fuse with a higher current rating. Use Bussmann GMA-10 or equivalent.

  • Page 14: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS BREAKDOWN 125T and 170T Models ILLUSTRATED PARTS BREAKDOWN 125T Models 170T Models RH125T RH170T RHD125T RHD170T RL125T RL170T M125T M170T RE125T RE170T 10-1 10-2 10-3 10-5 10-4 10-6 10-17 10-7 10-16 10-8 10-15 10-9 10-13 10-10 10-14 10-11...
  • Page 15 PARTS LIST 125T and 170T Models PARTS LIST 125T Models 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...

  • Page 16: Illustrated Parts Breakdown

    ILLUSTRATED PARTS BREAKDOWN 200T Models ILLUSTRATED PARTS BREAKDOWN 200T Models M200T, RHD200T RE200T, RH200T RL200T 7-10 7-11 Nozzle Assembly 10-1 10-2 10-3 10-5 10-4 10-6 10-17 10-7 10-16 10-8 10-15 10-9 10-18 10-10 10-14 10-11 10-13 10-12 Motor and Pump Assembly For more information, visit www.desatech.com For more information, visit www.desatech.com 109891-01B...
  • Page 17 PARTS LIST 200T Models PARTS LIST 200T 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 M200T, RHD200T desired part.

  • Page 18: Wheels And Handle

    WHEELS AND HANDLE WHEELS AND HANDLE WHEELS AND HANDLE PARTS LIST PART PART NUMBER DESCRIPTION QTY. 108459-01 Handle/Support WP 4C Washer 108630-01 Screw 108463-01 Extension Cord Wrap M16801-5 Axle 108468-01 Washer 107426-01 Wheel Kit (Contains: 2 Wheels and Cap Nuts) M28526 Cap Nut For more information, visit www.desatech.com...

  • Page 19: Technical Service

    PARTS UNDER WARRANTY your model and serial numbers of your heater ready. Contact authorized dealers of this product. If they can’t supply You can also visit DESA International’s technical services web site original replacement part(s), call DESA International’s Technical at www.desatech.com.

  • Page 20: Accessories

    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.

  • Page 21: Owner's Registration Card

    State: Zip: Country: Phone: ( E-Mail: Please answer the following questions to register your product with DESA International: 1. Who will heater be used by? Individual Business 2. Will you use your heater in more than one location? 3. Where will the product be used? (You may select more than one.)
  • Page 22 Postage Required 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 TAPE...
  • Page 23 OTHER OUTDOOR HEATING PRODUCTS PROPANE/LP FORCED AIR HEATERS PROPANE/LP CONVECTION HEATERS PORTABLE KEROSENE/DIESEL FORCED AIR HEATERS PROPANE/LP TANK TOP HEATERS PROPANE/LP AND NATURAL GAS GARAGE HEATERS PROPANE/LP PROPANE/LP AND NATURAL PATIO HEATERS GAS CHIMENEAS...

  • Page 24: Warranty And Repair Service

    LIMITED 2-YEAR WARRANTY DESA International warrants this product and any parts thereof, to be free of 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 manual is also suitable for:

170t200t

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