Instruction/ maintenance manual of the product B50H Desa
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PORT ABLE FORCED AIR HEA TER OWNER’S MANUAL IMPORTANT Read and understand this manual before assembling, starting, or servicing heater. Improper use of heater can cause serious injury.
2 102553 Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Unpacking ..........................................
3 102553 SAFETY INFORMA TION Continued W ARNINGS (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.
4 102553 PRODUCT IDENTIFICA TION Figure 2 - Cross Section Operational View Fuel Filter Air Line To Burner Air Output Filter Air Pump Air Intake Filter Cool Air In Fan Combustion Chamber Ignitor Motor .
5 102553 W ARNING FUELS Use only kerosene or No. 1 fuel oil to avoid risk of fi re or explosion. Never use gasoline, naphtha, paint thinners, alcohol, or other highly fl ammable fuels.
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.
7 102553 TROUBLE- SHOOTING W ARNING Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. FAULT CONDITION POSSIBLE CAUSE REMEDY Check circuit breaker in electrical panel. Check all electrical connec- tions.
8 102553 SER VICE PROCEDURES W ARNING Upper Shell Removal 1. Remove screws along each side of heater using 5/16" nut-driver. These screws attach upper and lower shells together. 2. Lift upper shell off. 3. Remove fan guard. Never service heater while it is plugged in, operating, or hot.
9 102553 Pump Pressure Adjustment 1. Remove pressure gauge plug from fi lter end cover. 2. Install accessory pressure gauge (part number HA1180). 3. Start heater (see Operation , page 5). Allow motor to reach full speed. 4. Using a flat blade screwdriver, set the pressure to 3.
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.
11 102553 (Pump Rotor, continued) 10. Install blades, pump plate, air fi lters, and fi lter 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 ).
12 102553 You may have further questions about operation or troubleshooting. If so, contact DESA International ’ s Technical Service Dept. at 1-800-323-5190. TECHNICAL SER VICE Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty.
13 102553 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 Central or DESA International for referral information. Parts Centrals are listed in the Autho- rized Service Center booklet supplied with heater.
14 102553 ILLUSTRA TED P ARTS BREAKDOWN Motor and Pump Assembly 12-11 12-18 12-17 12-16 12-15 12-14 12-13 12-12 12-10 12-1 12-2 12-3 12-4 12-5 12-6 12-7 12-8 12-9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1.
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.
W ARRANTY AND REP AIR SER VICE WARRANTY SERVICE Should your heater require service, return it to your nearest authorized service center. Proof of purchase must be presented with the heater. The heater will be inspected. A defect may be caused by faulty materials or workman- ship.
An important point after buying a device Desa B50H (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa B50H yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa B50H - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa B50H you will learn all the available features of the product, as well as information on its operation. The information that you get Desa B50H will certainly help you make a decision on the purchase.
If you already are a holder of Desa B50H, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa B50H.
However, one of the most important roles played by the user manual is to help in solving problems with Desa B50H. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa B50H along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
