1. Manuals
  2. Brands
  3. Desa Manuals
  4. Heater
  5. RH125TH
  6. Owner's manual

Desa RH125TH Owner's Manual

Portable forced air heater
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this 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 Size: 125,000 Btu/Hr
Save this manual for future reference.
Save this manual for future reference
PORTABLE FORCED
AIR HEATER
OWNER'S MANUAL
TROUBLESHOOTING ................................................................ 7
SERVICE PROCEDURES .......................................................... 8
SPECIFICATIONS .................................................................... 13
REPLACEMENT PARTS .......................................................... 13
TECHNICAL SERVICE ............................................................. 13
ACCESSORIES ........................................................................ 13
WHEELS AND HANDLE PARTS LIST ...................................... 16
WIRING DIAGRAM ................................................................... 16
OWNER'S REGISTRATION FORM .......................................... 17
WARRANTY AND REPAIR SERVICE ...................................... 20
®

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RH125TH and is the answer not in the manual?

Questions and answers

Related Manuals for Desa RH125TH

Summary of Contents for Desa RH125TH

  • Page 1: Table Of Contents

    PORTABLE FORCED AIR HEATER OWNER’S MANUAL For more information, visit www.desatech.com For more information, visit www.desatech.com Heater Size: 125,000 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 • Use only the electrical voltage and frequency specified on WARNING: This product contains and/or generates model plate. chemicals known to the State of California to cause • Heater must be grounded. Use only a properly grounded three- cancer or birth defects, or other reproductive harm.

  • Page 3: Product Identification

    PRODUCT IDENTIFICATION UNPACKING FUELS VENTILATION PRODUCT IDENTIFICATION Upper Shell ON/OFF Thermostat Knob Hot Air Switch Outlet Handle Lower Shell Guard Fuel Cap/ Gauge Extension Cord Wrap Shroud Control Rear Panel Cover Ignition Control Assembly (On Inside of Control Cover) Fuel Tank Figure 1 - 125TH Model UNPACKING VENTILATION...

  • 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, TRANSPORTING, 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 1. Remove screws along each side of heater using phillips screw- driver.
  • Page 9 SERVICE PROCEDURES SERVICE PROCEDURES Continued PUMP PRESSURE ADJUSTMENT FUEL FILTER Remove fan guard using medium phillips screwdriver. 1. Remove control cover screws using medium phillips screwdriver. Remove pressure gauge plug from filter end cover (see Figure 9). Remove control cover. Install accessory pressure gauge (part number HA1180).
  • Page 10 SERVICE PROCEDURES SERVICE PROCEDURES Continued IGNITOR 1. Remove upper shell (See Upper Shell Removal, page 8). 9. Carefully guide ignitor into opening in nozzle adapter bracket. Do not strike ignitor element. Attach ignitor to nozzle adapter 2. Remove fan (see page 8). bracket with screw using a 5/16"...
  • Page 11 SERVICE PROCEDURES SERVICE PROCEDURES Continued Nozzle/Adapter NOZZLE ASSEMBLY Combustion Assembly Chamber Remove upper shell (see Upper Shell Removal, page 8). Remove fan (see Fan, page 8). Remove fuel and air line hoses from nozzle assembly (see Figure 14). Turn nozzle assembly 1/4 turn to left and pull toward motor to Figure 15 - Removing Nozzle/Adapter Assembly remove (see Figure 15).
  • Page 12 4. Remove fuse from fuse clips. 13. Adjust pump pressure (see Pump Pressure Adjustment, page 9). 5. Replace with new fuse (DESA Heating Products part number Note: If rotor is still binding, proceed as follows. 105880-02). Do not substitute a fuse with a higher current rat- ing.

  • Page 13: Specifications

    Fuel Tank Capacity (U.S. Gal./Liters) 13.5/51 You can also visit DESA Heating Products’ technical services web Fuel Consumption (Gal. Per Hr/Liters Per Hr) .90/3.41 site at www.desatech.com. Pump Pressure (psi)

  • Page 14: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS BREAKDOWN Models M125TH and RH125TH ILLUSTRATED PARTS BREAKDOWN MODELS M125TH RH125TH 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...
  • Page 15 PARTS LIST M125TH and RH125TH PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, be sure to MODELS provide the correct model and serial numbers (from the model plate), then the part M125TH number and description of the desired part.

  • Page 16: Wheels And Handle Parts List

    WHEELS AND HANDLE WIRING DIAGRAM WHEELS AND HANDLE WHEELS AND HANDLE PARTS LIST KEY 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 WIRING DIAGRAM...

  • Page 17: Owner's Registration Form

    State: Zip: Country: Phone: ( E-Mail: Please answer the following questions to register your product with DESA Heating Products: 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 18 Postage Required 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 TAPE...
  • Page 19 OTHER OUTDOOR HEATING PRODUCTS PROPANE FORCED AIR HEATERS PROPANE CONVECTION HEATERS PORTABLE KEROSENE FORCED AIR HEATERS PROPANE TANK TOP HEATERS PROPANE AND NATURAL GAS GARAGE HEATERS PROPANE PROPANE AND NATURAL GAS PATIO HEATERS CHIMENEAS...

  • Page 20: Warranty And Repair Service

    LIMITED 2-YEAR WARRANTY DESA Heating Products 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:

M125th

Table of Contents