Desa B600D, B350D owner manual Service Procedures, Upper Shell Removal, Spark Plug, Nozzle

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HIGH PRESSURE PORTABLE FORCED AIR HEATER 350,000 AND 600,000 BTU/HR

SERVICE

PROCEDURES

WARNING: Never service heater while it is plugged in, op- erating, or hot. Severe burns and electrical shock can occur. Only a qualified service person should service and repair heater.

UPPER SHELL REMOVAL

1.Remove screws along each side and top of heater using 5/16" nut-driver. These screws attach upper and lower shells together (see Figure 5).

2.Lift upper shell off.

Upper Shell

Air Deflector

Fan Blade

Figure 6 - Fan Blades and Air Deflectors

SPARK PLUG

1.Remove upper shell (see column 1).

2.Remove spark plug wire from spark plug (see Figure 7).

3.Remove spark plug from burner head using 13/16" open-end wrench (see Figure 7).

4.Replace spark plug if damaged or heavily coated with carbon.

5.Clean and regap spark plug electrodes to .075 inch (see Figure 8).

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace upper shell.

NOZZLE

1.Remove upper shell (see column 1).

2.Remove fuel line from solenoid valve using 7/16" wrench.

3.Remove spark plug wire from spark plug.

4.Remove spark plug from burner head using 13/16" open-end wrench.

5.Remove five screws using 5/16" nut- driver and remove burner head from combustion chamber.

6.Place burner head into vise and lightly tighten.

7.Carefully remove nozzle from burner head using 5/8" socket wrench (see Fig- ure 9, page 11).

8.Inspect nozzle for damage. If damaged or clogged, replace nozzle.

9.Make sure plug is in place on burner head.

10.Replace nozzle into burner head and tighten firmly (175-200 inch-pounds).

11.Attach burner head to combustion chamber.

12.Install spark plug in burner head.

13.Attach spark plug wire to spark plug.

14.Attach fuel line to solenoid valve. Tighten firmly.

15.Replace upper shell.

Figure 5 - Upper Shell Removal, 600,000 Btu/Hr Model

FAN BLADES AND AIR DEflECTORS

1.Remove upper shell (see column 1).

2.Clean fan blades and air deflectors with clean, soft cloth moistened with kero- sene or solvent (see Figure 6).

3.Dry fan blades and air deflectors thor- oughly.

4.Replace upper shell.

Burner Head

Spark Plug

Spark

Plug Wire

Figure 7 - Spark Plug Removal

.075 inch

Figure 8 - Spark Plug Gap

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Contents High Pressure Portable Forced AIR Heaters Safety Information FuelingProduct Identification UnpackingFresh Air Opening Requirements Theory Fuelsventilation OperationOpening To Start Heater Extension Cord Wire Size RequirementsStoring TRANSPORTING, or Shipping To Stop HeaterPreventative Maintenance Schedule How OftenTroubleshooting Observed Problem Possible Cause RemedyStoring, Transporting, or Shipping Adjust pump pressure see Pump Pres Spark Plug Service ProceduresUpper Shell Removal NozzleProcedure if Pump is Binding Pump Pressure AdjustmentPump Fuel Filters Procedure for Tightening Fuel LinesFuel Lines Tank Fuel FilterMaintenance Kits SpecificationsWiring Diagram AccessoryIllustrated Parts Breakdown Parts List Description QTY600,000 BTU/HR NPC-1C Δ Burner Head Assembly 350,000 and 600,000 Btu/Hr Motor and Pump Assembly 350,000 and 600,000 Btu/Hr099507 Parts and Repair Service Limited WarrantyParts and Service Under Warranty Corporate Headquarters

B350D, B600D specifications

The Desa B350D and B600D are two cutting-edge heating appliances designed to meet modern demands for efficiency, performance, and user convenience. These models, known for their reliable heating capabilities, incorporate advanced technologies that enhance both functionality and comfort in various environments.

The Desa B350D is a mid-range option that is ideal for smaller spaces. It boasts a compact design that allows it to fit seamlessly into any room, while still delivering substantial heating power. The B350D features an adjustable thermostat, which gives users complete control over their heating needs. With a maximum output of 35,000 BTUs, it can effectively heat areas up to approximately 1,200 square feet. The unit is equipped with an innovative multi-fuel system that allows it to operate on natural gas, propane, or liquid fuel, providing versatility and convenience to users.

On the other hand, the Desa B600D is a more powerful option, designed for larger spaces requiring higher heating capacities. With an output capacity of 60,000 BTUs, it efficiently warms areas up to 2,000 square feet, making it a perfect choice for workshops, garages, or large living spaces. Just like its smaller counterpart, the B600D features a user-friendly adjustable thermostat for personalized comfort.

Both models integrate safety features such as a tilt switch, which automatically shuts off the unit if it is tipped over, ensuring peace of mind when in use. Additionally, these units are designed with a durable exterior that is built to withstand the rigors of frequent usage.

Energy efficiency is a critical consideration in today's eco-conscious market, and the Desa B350D and B600D deliver on this front as well. Both models feature an efficient burner system that maximizes fuel utilization, reducing overall consumption and lowering heating costs.

In terms of maintenance, both models are designed for easy access to components, allowing users to perform routine checks and maintenance without hassle. The user manuals provide clear instructions, ensuring that even those with minimal technical expertise can keep their units in optimal working condition.

In summary, the Desa B350D and B600D stand out in the heating appliance market for their powerful performance, versatile fuel options, and user-friendly features. Whether for residential or commercial applications, these models represent a reliable choice for those seeking efficient and effective heating solutions.
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