Desa Tech HEATERS OWNER'S MANUAL Service Procedures, Upper Shell Removal, Spark Plug, Nozzle

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SERVICE PROCEDURES

WARNING: Never service heater while it is plugged in, op- erating or hot. Severe burns and electrical shock can occur. Only aqualifiedservicepersonshould 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 6).

2.Lift upper shell off.

SPARK PLUG

1.Remove upper shell (see Upper Shell Removal).

2.Remove spark plug wire from spark plug (see Figure 8).

3.Remove spark plug from burner head using 13/16" open-end wrench (see Figure 8).

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

5.Clean and regap spark plug electrodes to .075 inch (see Figure 9).

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace upper shell.

Burner

Spark Plug

Head

 

Upper Shell

Figure 6 - Upper Shell Removal,

600,000 Btu/Hr Model

FAN BLADES AND AIR

DEFLECTORS

1.Remove upper shell (see Upper Shell Re- moval).

2.Clean fan blades and air deflectors with clean, soft cloth moistened with kerosene or solvent (see Figure 7).

3.Dry fan blades and air deflectors thoroughly.

4.Replace upper shell.

Air

Deflector

Fan

Blade

Figure 7 - Fan Blades and Air Deflectors

Spark Plug

Wire

Figure 8 - Spark Plug Removal

.075

inch

Figure 9 - Spark Plug Gap

NOZZLE

1.Remove upper shell (see Upper Shell Re- moval).

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 Figure 10).

 

Plug

Spark Plug

 

 

Nozzle

 

 

 

 

Spark Plug

Burner

 

Wire

Head

Fuel Line

Solenoid Valve

 

Figure 10 - Replacing Nozzle

110098-01G

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Contents Table of Contents Follow all local ordinances and codes when using heater Safety InformationUnpacking Product IdentificationFresh Air Opening Requirements Theory of OperationFuels To Restart Heater OperationTo Start Heater To Stop HeaterPortable Generator STORING, Transporting of ShippingHow Often How To Preventative Maintenance ScheduleObserved Problem Possible Cause Remedy TroubleshootingDamaged electronic ignitor Pump Pressure Adjustment FAN Blades and AIR Deflectors Service ProceduresUpper Shell Removal Spark PlugAdjusting Pump Pressure Fuel Lines Pump Procedure if Pump is BindingFor Heaters With Fuel Filter Internal To Pump Fuel FiltersTank Fuel Filter For Heaters With Fuel Filter/Canister External To PumpReplacement Parts Maintenance KitsTechnical Service AccessoryModels B350D, SB350D and R350A Illustrated Parts BreakdownNTC-4C Parts ListModels B600D, SB600D and R600A NTC-4C Burner Head Assembly 350,000 and 600,000 BTU/HR Illustrated Parts Breakdown and Parts ListNPF-5C For Heaters With Fuel Filter/Canister External To Pump Motor and Pump Assembly 350,000 and 600,000 BTU/HR350,000 Btu/Hr SpecificationsWiring Diagram Warranty Service Warranty and Repair Services

Tech HEATERS OWNER'S MANUAL specifications

Desa Tech heaters are renowned for their advanced heating solutions that combine efficiency, safety, and user-friendly features. This owner’s manual serves as a comprehensive guide to the main features, technologies, and characteristics of Desa Tech heaters, ensuring users can maximize their heating experience while maintaining optimal safety and performance.

One of the standout features of Desa Tech heaters is their innovative combustion technology, which allows for cleaner and more efficient burning of fuel. This not only maximizes heat output but also minimizes harmful emissions, making them an environmentally friendly choice. The heaters are designed to operate quietly, providing comfort without disruptive noise, which is perfect for living spaces and other environments where peace is vital.

Safety is a primary concern, and Desa Tech heaters come equipped with a variety of safety features. These include a reliable carbon monoxide monitor that alerts users to unsafe levels of this potentially lethal gas. Additionally, many models feature an automatic shut-off system that activates in the event of overheating or other irregular conditions. These safety mechanisms are crucial in preventing accidents and ensuring peace of mind during use.

Desa Tech heaters also employ advanced thermostatic control technology. This feature allows users to set their desired temperature, and the heater will automatically adjust its output to maintain that level. This not only provides comfort but also enhances energy efficiency, helping to reduce overall heating costs. Users can enjoy a warm atmosphere without the worry of excessive energy consumption.

Another notable characteristic is the portability of many Desa Tech heater models. Lightweight and designed with carry handles, these heaters are easy to move from room to room, providing versatile heating solutions throughout the home. Whether warming a living area, workshop, or garage, the convenience of a portable heater cannot be overstated.

Moreover, Desa Tech heaters are often designed for easy maintenance, with user-accessible filters and simple cleaning procedures. Regular maintenance ensures that the heater operates at peak efficiency and extends its lifespan.

In summary, the Desa Tech heater owner’s manual outlines the essential features and technologies that make these heating solutions a popular choice. With a focus on efficiency, safety, and user convenience, users can enjoy a warm and comfortable environment while minimizing their impact on the planet and keeping energy costs in check. By adhering to the guidelines in this manual, users can maximize the benefits of their Desa Tech heater for years to come.
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