Desa NTH50, NTH150, NTH100, NTH70 Nozzle, Removing Air and Fuel Line Hoses, 35,000 Btu/Hr Model

Page 11

OWNER’S MANUAL

SERVICE

PROCEDURES

Continued

Nozzle

(35,000 Btu/Hr Model)

1.Remove upper shell (see page 8).

2.Remove fan (see page 13).

3.Remove fuel and air line hoses from nozzle assembly.

4.Turn nozzle assembly 1/4 turn to left and pull toward motor to remove.

5.Place plastic hex-body into vise and lightly tighten.

6.Carefully remove nozzle from the nozzle adapter using 5/8" socket wrench.

7.Blow compressed air thru face of nozzle. This will free any dirt in nozzle area.

8.Inspect nozzle seal for damage.

9.Replace nozzle into nozzle adapter un- til nozzle seats. Tighten 1/3 turn more using 5/8" socket wrench (4.5-5.1 n-m/ 40-45 inch-pounds).

10.Attach nozzle assembly to burner strap.

11.Attach fuel and airline hoses to nozzle assembly.

12.Replace fan (see page 13).

13.Replace fan guard and upper shell.

Combustion

Chamber

Nozzle

Assembly

Fuel Line

Hose

Air Line

Hose

Figure 20 - Removing Air and Fuel Line Hoses, 35,000 Btu/Hr Model

Burner

Strap

Nozzle

Assembly

Figure 21 - Removing Nozzle Assembly, 35,000 Btu/Hr Model

Nozzle

Face

Nozzle

Seal

Nozzle

Nozzle

Adapter

Air line

Fitting

Fuel line

Fitting

Figure 22 - Nozzle and Nozzle Adapter, 35,000 Btu/Hr Model

Nozzle

(50/70/100/150,000 Btu/Hr Models)

1.Remove upper shell (see page 8).

2.Remove fan (see page 13).

3.Remove fuel and air line hoses from burner head.

4.Remove spark plug wire from spark plug.

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

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

7.Place burner head into vise and lightly tighten.

8.Carefully remove nozzle from burner head using 5/8" socket wrench (see Fig- ure 24).

9.Blow compressed air thru face of nozzle. This will free any dirt in nozzle area.

10.Inspect nozzle seal for damage.

11.Replace nozzle into burner head and tighten firmly (9.1-12.4 n-m/80-110 inch-pounds).

12.Attach burner head to combustion chamber.

13.Install spark plug in burner head.

14.Attach spark plug wire to spark plug.

15.Attach fuel and airline hoses to burner head.

16.Replace fan (see page 13).

17.Replace fan guard and upper shell.

Combustion

Burner

Chamber

Head

 

Spark Plug

Screw

Wire

 

Spark

 

Plug

Fuel Line

Air LineHose

Hose

Figure 23 - Removing Burner Head, 50/ 70/100/150,000 Btu/Hr Models

Nozzle

Face

Nozzle

Seal

Nozzle

Burner Head

Fuel line

Fitting

Air line Fitting

Figure 24 - Removing Nozzle, 50/70/100/ 150,000 Btu/Hr Models

Continued

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Contents Portable Forced AIR Heaters Portable Forced AIR Heaters Safety InformationFuels Product IdentificationUnpacking Tools Needed AssemblyVentilation To Stop Heater Extension Cord Wire Size RequirementsTheory Operation To Start HeaterHow Often How To Preventative MaintenanceStoring TRANSPORTING, or Shipping ScheduleObserved Fault Possible Cause Remedy TroubleshootingFuel Filter Service ProceduresUpper Shell Removal 35,000 Btu/Hr Model Spark PlugAir Output, Air Intake, and Lint Filters Pump Pressure AdjustmentRemoving Air and Fuel Line Hoses, 35,000 Btu/Hr Model NozzlePump Rotor Procedure if Rotor is BindingFan SpecificationsWiring Diagrams NTH35 35,000 BTU/HR Model Illustrated Parts BreakdownKEY Part Number Description QTY Parts ListNTH50 50,000 BTU/HR Model Burner Head AssemblyMotor and Pump Assembly WLE-3 NTH70 70,000 BTU/HR Model Parts List NTH100 100,000 BTU/HR Model Lock Washer, #10 M16660 Photocell Bracket NTH150 150,000 BTU/HR Model Lock Washer, #10 HA3019 Photocell Assembly Heavy Duty Wheels and Handle KIT HA1202 AccessoriesWheels Handles AIR Gauge KIT HA1180EC Conformity Declaration EC Conformity DeclarationWarranty Information

NTH35, NTH70, NTH100, NTH50, NTH150 specifications

Desa NTH series consists of exceptional products designed to meet diverse demands in various applications. With models including NTH150, NTH35, NTH70, NTH100, and NTH50, this series offers a range of specifications and capabilities that cater to both residential and commercial needs.

The NTH150 model is the flagship in the series, featuring a powerful performance with a high output capacity. This model excels in energy efficiency, making it an exemplary choice for users aiming to reduce operational costs while preserving peak performance. With advanced temperature control systems, the NTH150 provides consistent and reliable results in various environments.

Moving to the NTH35, this model is designed for smaller applications while still ensuring high efficiency. It is compact and user-friendly, making it an ideal choice for domestic use. The NTH35 incorporates intuitive controls that allow users to easily monitor and adjust settings, thus ensuring optimal performance that meets the specific needs of smaller spaces.

The NTH70 strikes a balance between power and compactness, making it a versatile option for medium-range applications. This unit is designed with robustness in mind, incorporating durable materials that ensure longevity. It's equipped with smart sensors that track and adjust performance, maximizing efficiency and reducing wastage.

The NTH100 is known for its adaptability in various settings. It features a sleek design and is equipped with the latest technological advancements, including smart connectivity options. Users can effortlessly integrate the NTH100 into their existing setups, allowing remote monitoring and control through a mobile app. This feature enhances convenience and operational efficiency.

Lastly, the NTH50 serves as a practical solution for users seeking a middle ground between power and energy efficiency. With a well-rounded set of features, it accommodates diverse applications while promoting sustainability. Its straightforward interface simplifies operation, allowing even novice users to achieve optimal performance.

In summary, the Desa NTH series, comprising NTH150, NTH35, NTH70, NTH100, and NTH50, showcases a blend of innovation, efficiency, and ease of use. Each model is tailored to meet specific needs while providing advanced features and technologies that enhance performance and functionality. Users can confidently select a model from this series, knowing that they are investing in reliable, high-quality products that will stand the test of time.
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