SERVICE PROCEDURES

Continued

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.

PUMP PRESSURE ADJUSTMENT FOR HEATERS WITH FUEL FILTER/ CANISTER EXTERNAL TO PUMP

1.Remove pressure gauge plug from fuel pump port marked “GAUGE.”

2.Install accessory pressure gauge (part num- ber 110380-01) to fuel pump port marked “GAUGE” (see Figure 11).

3.Start heater (see Operation, page 5). Allow motor to reach full speed.

4.Adjust pressure. Use small flat blade screw- driver to turn slotted screw at fuel pump pres- sure adjusting port. Turn screw clockwise to increase pressure. Turn screw counterclockwise to decrease pressure. See specifications in Fig- ure 11 for correct pressure for each model.

5.Stop heater (see page 5).

6.Remove pressure gauge. Replace pres- sure gauge plug in fuel pump port marked “GAUGE.”

Model

Pump Pressure

350,000 Btu/Hr

100 PSI

600,000 Btu/Hr

110 PSI

PUMP PRESSURE ADJUSTMENT FOR HEATERS WITH FUEL FILTER INTERNAL TO PUMP

1.Remove pressure gauge plug from fuel pump port marked “GAUGE.”

2.Install accessory pressure gauge (part num- ber 110380-01) to fuel pump port marked “GAUGE” (see Figure 12). Do not use bleeder valve port to check the pressure. The bleeder valve port contains pressure higher than operating pressure. Setting pump pressure with gauge in the bleeder valve port results in wrong operating pressure.

3.Start heater (see Operation, page 5). Allow motor to reach full speed.

4.Adjust pressure. Use small flat blade screw- driver to turn slotted screw at fuel pump port at top right side of pump. Turn screw clockwise to increase pressure. Turn screw counterclockwise to decrease pressure. See specifications in Figure 12 for correct pressure for each model.

5.Stop heater (see page 5).

6.Remove pressure gauge. Replace pres- sure gauge plug in fuel pump port marked “GAUGE.”

Model

Pump Pressure

350,000 Btu/Hr

100 PSI

600,000 Btu/Hr

110 PSI

Pressure

psi

Gauge

 

Fuel Pump

 

Port Marked

 

“GAUGE”

 

Pressure

Gauge

psi

Fuel Pump

Fuel Pump Port

Port Marked

“PRESS ADJ”

Marked “GAUGE”

Figure 11 - Adjusting Pump Pressure

Pressure

Adjustment Port

Figure 12 - Adjusting Pump Pressure

12

www.desatech.com

110098-01G

Page 12
Image 12
Desa Tech HEATERS OWNER'S MANUAL owner manual Adjusting Pump Pressure

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.

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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.