Desa D30N, D20N, D44N Theory Operation, To Start Heater, To Stop Heater, To Reset Heater

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OWNER’S MANUAL

THEORY OF

OPERATION

The Fuel System: The air pump forces air through the air line. The air is then pushed through the burner head nozzle. This air causes fuel to lift from the tank. A fine mist of fuel is sprayed into the combustion cham- ber.

The Air System: The motor turns the fan. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air.

The Ignition System: The ignition control assembly provides power to the ignitor. This ignites the fuel/air mixture in the com- bustion chamber.

The Flame-Out Control System: This sys- tem causes the heater to shut down if the flame goes out.

OPERATION

WARNING: Review and un- derstand the warnings in the Safety Information section, page

2.They are needed to safely op- erate this heater. Follow all local codes when using this heater.

TO START HEATER

1.Follow all ventilation and safety infor- mation.

2.Fill fuel tank with kerosene or No. 1 fuel oil.

3.Attach fuel cap.

4.Plug power cord of heater into standard 230 volt/50 hertz, grounded (earthed) outlet. Use an extension cord if needed. Use only a three-prong, grounded (earthed) extension cord.

Extension Cord Wire Size Requirements

Up to 30.5 meters (100 feet) long, use 1.0 mm2 (16 AWG) conductor

30.6to 61 meters (101 to 200 feet) long, use

1.5mm2 (14 AWG) conductor

Push ON/OFF switch to ON () position and heater should start in 5 seconds. If ON/OFF switch light does not come on or heater does not start, see Troubleshooting (pages 6 and 7).

TO STOP HEATER

1.Push ON/OFF switch to OFF (O) position.

TO RESET HEATER

1.Push ON/OFF switch to OFF (O) posi- tion and wait 10 seconds (2 minutes if heater has been running).

2.Repeat steps under To Start Heater.

Combustion Chamber

Motor

Air Pump

ON/OFF Switch with Light

 

Ignitor

Air Intake

 

 

 

O

 

 

Fan

Filter

 

 

 

 

Clean

 

Cool

 

 

Heated

 

 

 

 

Air

 

 

Air Out

 

 

 

 

In

 

 

 

 

 

 

 

 

Air

 

 

 

 

Output

 

 

 

 

Filter

Figure 5 - ON/OFF Switch, D20N Model

 

 

 

Fuel

Nozzle

Fuel

Air Line

Ignition Control

Tank

 

Filter

To Burner

Assembly

 

Air For Fuel System

 

Air For Combustion

Fuel

 

 

And Heating

 

 

 

 

Figure 4 - Cross Section Operational View

O

ON/OFF Switch with Light

Figure 6 - ON/OFF Switch, D30N and D44N Models

105843

5

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Contents Portable Forced AIR Heaters D20N, D30N and D44N Models Portable Forced AIR Heaters Safety InformationFuels Product Identification UnpackingTools Needed AssemblyVentilation Extension Cord Wire Size Requirements To Reset HeaterTheory Operation To Start HeaterTroubleshooting Preventative MaintenanceStoring TRANSPORTING, or Shipping ScheduleWater in fuel tank Drain and flush fuel tank with clean Obstruction in nozzle assemblyON/OFF switch light remains on Filter Photocell and ignition control assemblyUpper Shell Removal Service ProceduresFuel Filter D20N ModelIgnitor Disconnecting Ignitor Wires from Ignition Control AssemblyAIR OUTPUT, AIR INTAKE, and Lint Filters Pump Pressure AdjustmentFuel and AIR Line Replacement Proper Routing Nozzle AssemblyPump Rotor Procedure if Rotor is BindingRemove Old Assembly Ignition Control AssemblyInstalling the New Assembly FAND20N Model Motor and Pump AssemblyIllustrated Parts Breakdown Number Description QTY Parts ListD30N Model KEY Part Number Description QTY D44N Model Desired part D44N ModelNTC-3C Wheels and HandlesWiring Diagram SpecificationsAccessories EC Conformity Declaration EC Conformity Declaration105843 Warranty Information

D30N, D44N, D20N specifications

Desa D30N, D20N, and D44N are advanced digital communication devices designed to enhance connectivity and streamline information transfer across various industries. These models exemplify modern technological innovations while addressing the growing demands for efficient communication in an increasingly interconnected world.

The Desa D30N is recognized for its impressive data transmission capabilities, featuring a robust multimedia communication interface that supports seamless integration across multiple platforms. This model employs cutting-edge encoding technologies that ensure high-quality audio and video streaming, making it an ideal choice for enterprises looking to facilitate clear and efficient virtual meetings. The D30N also incorporates advanced encryption protocols to safeguard sensitive information, ensuring secure end-to-end communication.

In contrast, the Desa D20N focuses on versatility and ease of use. This model is designed with a user-friendly interface that allows for quick deployment and intuitive operation. It supports numerous connectivity options, from traditional wired connections to modern wireless protocols, making it suitable for a variety of environments. The D20N is particularly well-suited for small to medium-sized businesses, providing essential communication tools without the need for extensive technological investment. Its compact design also allows it to fit conveniently into any workspace.

The Desa D44N stands out with its high-performance specifications tailored for heavy-duty applications. This model is engineered to deliver exceptional reliability and durability, making it suitable for demanding industrial environments. With enhanced signal processing capabilities, the D44N can handle multiple data streams simultaneously without compromising performance. It also incorporates long-range communication technologies, which enable it to maintain stable connections over considerable distances. This feature is essential for industries that require continuous monitoring and coordination across vast operational landscapes.

All three models—D30N, D20N, and D44N—boast compatibility with various operating systems and software applications, ensuring they can meet the unique needs of different users. Moreover, they are designed with energy efficiency in mind, promoting sustainable practices within organizations.

In summary, the Desa D30N, D20N, and D44N are exemplary digital communication solutions, each optimized for distinct operational requirements. With their unique technologies and characteristics, these devices play a pivotal role in fostering effective communication, enhancing productivity, and supporting ambitious business strategies in the digital age.