Desa B50H - Manuals - manualsarea.com

Page 2 - CONTENTS; SECTION; WARNINGS; SAFETY; DANGER

2 102553 Safety Information ......................................................................... 2Product Identification .................................................................... 4Unpacking ..................................................................................... 4Theory ...

Page 3 - Continued

3 102553 SAFETY INFORMATION Continued WARNINGS (Continued) • Use only kerosene or No. 1 fuel oil to avoid risk of fire or explosion. Never use gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels. • Fueling a) Personnel involved with fueling shall be qualified and thoroughly f...

Page 4 - THEORY OF; UNPACKING

4 102553 PRODUCT IDENTIFICATION Figure 2 - Cross Section Operational View FuelFilter Air LineTo Burner AirOutputFilter Air Pump Air IntakeFilter CoolAirIn Fan Combustion Chamber Ignitor Motor CleanHeatedAir Out Ignition ControlAssembly Figure 1 - 50,000 Btu/Hr Model Handle Fuel Cap Lower Shell Power...

Page 5 - FUELS; WARNING; VENTILATION; WARNING; To Start Heater; OPERATION; To Stop Heater

5 102553 WARNING FUELS Use only kerosene or No. 1 fuel oil to avoid risk of fire orexplosion. Never use gasoline, naphtha, paint thinners,alcohol, or other highly flammable fuels. Do not use heavy fuels such as No. 2 fuel oil or No. 2 Diesel. Using heavy fuelswill result in: • clogged fuel filter an...

Page 6 - PREVENTATIVE; OR SHIPPING

6 102553 Item How Often How To Fuel tank Flush every 150-200 hours See Storing, Transporting, or of operation or as needed. Shipping, above. Air output and Replace every 500 hours of See Air Output, Air Intake, lint filters operation or once a year. and Lint Filters, page 8. Air intake Wash and dry ...

Page 7 - SHOOTING

7 102553 TROUBLE- SHOOTING WARNING Never service heater while it is plugged in, operating, orhot. Severe burns and electrical shock can occur. FAULT CONDITION POSSIBLE CAUSE REMEDY Check circuit breaker in electrical panel. Check all electrical connec- tions. See Wiring Diagram,page 11. If fan does ...

Page 8 - Upper Shell Removal; Fan

8 102553 SERVICE PROCEDURES WARNING Upper Shell Removal 1. Remove screws along each side of heater using 5/16" nut-driver. Thesescrews attach upper and lowershells together. 2. Lift upper shell off.3. Remove fan guard. Never service heater while it is plugged in, operating, orhot. Severe burns a...

Page 10 - Nozzle; Pump Rotor

10 102553 Nozzle 1. Remove upper shell (see page 8).2. Remove fan (see page 8).3. Remove fuel and air line hoses from nozzle assembly. 4. Turn nozzle assembly 1/4 turn to left and pull toward motor to remove. 5. Place plastic hex-body into vise and lightly tighten. 6. Carefully remove nozzle from th...

Page 11 - SPECIFICATIONS; WIRING

11 102553 (Pump Rotor, continued) 10. Install blades, pump plate, air filters, and filter end cover. 11. Replace fan guard and upper shell.12. Adjust pump pressure (see page 9). Note: If rotor is still binding, proceed as follows. 13. Perform steps 1 through 6 (see page 10).14. Place fine grade sand...

Page 12 - REPLACEMENT

12 102553 You may have further questions about operation or troubleshooting. If so, contactDESA International’s Technical Service Dept. at 1-800-323-5190. TECHNICAL SERVICE Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts ...

Page 13 - ACCESSORIES

13 102553 ACCESSORIES Purchase accessories and partsfrom your nearest dealer orservice center. If they can notsupply these accessories or parts,either contact your nearest PartsCentral or DESA Internationalfor referral information. PartsCentrals are listed in the Autho-rized Service Center bookletsu...

Page 15 - PARTS LIST

15 102553 PARTS LIST Models B50H and REM50C 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. ** Not available as an assembly. *** See ...

Page 16 - WARRANTY AND REPAIR SERVICE; DESA; INTERNATIONAL

WARRANTY AND REPAIR SERVICE WARRANTY SERVICE Should your heater require service, return it to yournearest authorized service center. Proof of purchase mustbe presented with the heater. The heater will be inspected.A defect may be caused by faulty materials or workman-ship. If so, DESA International ...