Instruction/ maintenance manual of the product B50G Desa
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PORT ABLE FORCED AIR HEA TERS OWNER’S MANUAL IMPORTANT Read and understand this manual before assembling, starting, or servic- ing heater. Improper use of heater can cause serious injury.
2 102016 Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Unpacking ..........................................
3 102016 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 102016 PRODUCT IDENTIFICA TION 35/50/70,000 BTU/HR DOMESTIC PFA/PV 042 Handle Fuel Cap Lower Shell Power Cord Side Cover Fuel Tank Hot Air Outlet Air Filter End Cover Fan Guard Upper Shell Flame-Out Control Reset Button Figure 1 - Models B50G and REM50B 1.
5 102016 W ARNING ! FUELS Do not use heavy fuels such as No. 2 fuel oil or No. 2 Diesel. Using heavy fuels will result in: • clogged fuel fi lter and nozzle • carbon build up on spark plug • the need of non-toxic anti-icer in fuel during very cold weather IMPORTANT: Use a KEROSENE ONLY storage container.
6 102016 OPERA TION W ARNING ! Review and understand the warnings in the Safety Information Section, pages 2 and 3. They are needed to safely operate this heater. Follow all local codes when using this heater. To Start Heater 1. Follow all ventilation and safety information.
7 102016 ST ORING, TRANSPORTING, OR SHIPPING Note: If shipping, transport companies require fuel tanks to be empty. 1. Drain fuel tank. Note: Some models have drain plug on underside of fuel tank. If so, remove drain plug to drain all fuel. If heater does not have drain plug, drain fuel through fuel cap opening.
8 102016 Wrong pump pressure Dirty air output, air intake and lint fi lters Dirty fuel fi lter Dirt in nozzle Dirty or bad photocell lens Bad flame-out control Heater ignites, but flame-out control shuts off heater after a short period of time. W ARNING ! TROUBLE- SHOOTING Never service heater while it is plugged in, operating, or hot.
9 102016 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.
10 102016 Relief Valve Pressure Gauge Plug Continued 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 6). Allow motor to reach full speed.
11 102016 50 ROTOR PFA/P 056 Fuel Line Hose Nozzle Assembly Figure 13 - Removing Air and Fuel Line Hoses Combustion Chamber Air Line Hose Nozzle Assembly Figure 14 - Removing Nozzle Assembly Burner St.
12 102016 Blade Rotor .003"/.004" Gap Measured With Feeler Gauge Gap Adjusting Screw Sandpaper Gap Adjusting Screw Figure 18 - Sanding Rotor Figure 17 - Gap Adjusting Screw Locations (Pump Rotor, continued) 10. Install blades, pump plate, air fi lters, and fi lter end cover.
13 102016 Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts Under Warranty Contact authorized dealers of this product. If they can ’ t supply original replacement part(s), call DESA International ’ s Technical Service Dept.
14 102016 ILLUSTRA TED P ARTS BREAKDOWN PFA/P 003 MOTOR & PUMP 30 EAI/EBI 12-1 12-2 12-3 12-4 12-5 12-6 12-7 12-8 12-9 12-10 12-11 12-13 12-18 12-17 12-16 12-15 12-14 12-12 1 2 3 4 5 6 7 8 9 10 11.
15 102016 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. P ARTS LIST Models B50G and REM50B KEY PART NO.
W ARRANTY AND REP AIR SERVICE 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 B50G (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 B50G 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 B50G - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa B50G you will learn all the available features of the product, as well as information on its operation. The information that you get Desa B50G will certainly help you make a decision on the purchase.
If you already are a holder of Desa B50G, 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 B50G.
However, one of the most important roles played by the user manual is to help in solving problems with Desa B50G. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa B50G 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
