Desa SB350D, SB600D owner manual Pump Pressure Adjustment, Procedure if Pump is Binding

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OWNER’S MANUAL

SERVICE

PROCEDURES

Continued

Pump Pressure Adjustment

1.Remove pressure gage plug from fuel pump port marked “GAGE.”

2.Install accessory pressure gage (part number M4574) to fuel pump port marked “GAGE” (see Figure 10).

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

4.Adjust pressure. Use small flat blade screwdriver to turn slotted screw at fuel pump port marked “PRESS ADJ.” Turn screw clockwise to increase pressure. Turn screw counterclockwise to de- crease pressure. See specifications at right for correct pressure for each model.

5.Stop heater (see page 5).

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

Pressure

Gage

Fuel Pump Port

Marked “GAGE” Fuel Pump Port

Marked “PRESS

ADJ”

Model

Pump Pressure

350,000 Btu/Hr

100 PSI

600,000 Btu/Hr

110 PSI

Figure 10 - Adjusting Pump Pressure

Pump

(Procedure if Pump is Binding)

1.Remove upper shell (see page 10).

2.Loosen hex screw on flange clamp at rear of motor with

5/16" nut-driver (see Figure 11).

3.Turn fan with hand (see Figure 12).

4.If fan turns freely, tighten screw on flange clamp.

5.If fan does not turn freely, replace pump.

6.Replace upper shell.

Hex Screw

On Flange

Clamp

Figure 11 - Location of Screw on Flange Clamp

Figure 12 - Turning Fan with Hand

Continued

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Contents High Pressure Portable Forced AIR Heaters Fueling Safety InformationUnpacking Product IdentificationFresh Air Opening Requirements Theory OperationFuels VentilationTo Restart Heater Storing TRANSPORTING, or ShippingTo Start Heater To Stop HeaterHow Often Preventative Maintenance ScheduleObserved Problem Possible Cause Remedy TroubleshootingTransporting, or Shipping, Sure Adjustment, Upper Shell Removal Service ProceduresFan Blades and Air Deflectors NozzlePump Pump Pressure AdjustmentProcedure if Pump is Binding Tank Fuel Filter Procedure for tightening fuel linesFuel Lines Fuel FiltersAccessory SpecificationsWiring Diagram Maintenance KitsIllustrated Parts Breakdown Description QTY Parts ListSB600D 600,000 BTU/HR NPC-1C Motor and Pump Assembly 350,000 and 600,000 Btu/Hr Burner Head Assembly 350,000 and 600,000 Btu/Hr106029 Corporate Headquarters Warranty and Repair Service

SB350D, SB600D specifications

The Desa SB350D and SB600D are modern heating solutions designed to cater to both residential and commercial needs. These models showcase a blend of advanced technology and user-friendly features, making them reliable choices for efficient heating.

One of the standout features of the Desa SB350D and SB600D is their high efficiency. With advanced combustion technology, these units can achieve a notable thermal efficiency rating. This means that they convert a larger percentage of fuel into usable heat, reducing energy costs and minimizing environmental impact.

Both models are equipped with a robust safety system. The automatic shut-off mechanism is a key element, ensuring that the heater will turn off in case of overheating, providing peace of mind for users. Additionally, they incorporate a low oxygen safety shutoff, which will turn the unit off if oxygen levels drop below a safe threshold, making them suitable for use in various environments.

Another important characteristic of the Desa SB350D and SB600D is their versatility. These heaters can efficiently operate using multiple fuel sources, including propane and natural gas. This flexibility allows users to choose a fuel type that best suits their needs and availability. Furthermore, both models feature an adjustable thermostat that enables users to easily control the temperature, ensuring optimal comfort at all times.

Design plays a crucial role in the appeal of these units. The SB350D and SB600D come with a sleek and modern aesthetic that can seamlessly blend into various settings, from homes to commercial spaces. Their compact size allows for easy placement without sacrificing heating performance.

Installation is made effortless with these models. The Desa SB350D and SB600D come with detailed instructions and can be installed in a variety of configurations, including wall-mounted or freestanding options. This adaptability enhances their usability across different spaces.

In terms of durability, the construction of both units is solid, designed to withstand the rigors of daily use. Their materials are chosen for longevity, ensuring that users can rely on these heaters season after season.

Overall, the Desa SB350D and SB600D are exemplary choices for those seeking an efficient, versatile, and reliable heating solution. With their blend of safety features, fuel flexibility, and attractive design, they meet the demands of modern heating while providing exceptional performance.