Desa NTH50-2, NTH35-2, NTH100-2 AIR OUTPUT, AIR INTAKE, and Lint Filters, Pump Pressure Adjustment

Page 10

PORTABLE FORCED AIR HEATERS

SERVICE

PROCEDURES

Continued

AIR OUTPUT, AIR INTAKE, AND LINT FILTERS

1.Remove upper shell (see page 8).

2.Remove filter end cover screws using 5/16" nut-driver.

3.Remove filter end cover.

4.Replace air output and lint filters.

5.Wash or replace air intake filter (see Preventative Maintenance Schedule, page 6).

6.Replace filter end cover.

7.Replace fan guard and upper shell.

IMPORTANT: Do not oil filters

PUMP PRESSURE

ADJUSTMENT

1.Remove pressure gauge plug and plas- tic cap (35/50/70,000 Btu/Hr Models only) from filter end cover.

2.Install accessory pressure gauge (part number HA1180).

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

4.Adjust pressure. Turn relief valve to right to increase pressure. Turn relief valve to left to decrease pressure. See specifications below for correct pres- sure for each model.

5, Remove pressure gauge. Replace pres- sure gauge plug and plastic cap (35/50/ 70,000 Btu/Hr Models only) in filter end cover.

Air Intake Filter

Filter End

Fan Guard

Cover

Lint Filter

Air Output

Filter

Figure 13 - Air Output, Air Intake, and Lint Filters, 35/50/70,000 Btu/Hr Models

Air Intake Filter

Filter End

Fan Guard

Cover

 

Lint Filter

Air Output

Filter

Figure 14 - Air Output, Air Intake, and Lint Filters, 100/150,000 Btu/Hr Models

Pressure

 

 

Gauge

 

Pump

Plug

 

 

Pressure

Relief

 

Model

(PSI/Bar)

Valve

NTH35-2

2.9/0.200

 

NTH50-2

3.9/0.270

 

NTH70-2

4.9/0.338

 

NTH100-2

4.9/0.338

 

NTH150-2

5.5/0.380

Plastic Cap

 

 

Figure 15 - Pressure Gauge Plug and

Pressure

 

Plastic Cap Removal

Gauge

 

 

 

(35/50/70,000 Btu/Hr Models Shown)

 

 

Figure 16 - Adjusting Pump Pressure

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Contents Portable Forced AIR Heaters Safety Information Portable Forced AIR HeatersUnpacking Product IdentificationFuels Ventilation AssemblyTools Needed Theory Operation Extension Cord Wire Size RequirementsTo Reset Heater To Start HeaterStoring TRANSPORTING, or Shipping Preventative MaintenanceTroubleshooting ScheduleSee Fuel Filter, Fuel Filter Service ProceduresUpper Shell Removal 35/50/70,000 Btu/Hr ModelsDisconnecting Ignitor Wires from Ignition Control Assembly IgnitorPump Pressure Adjustment AIR OUTPUT, AIR INTAKE, and Lint FiltersNozzle Assembly Fuel and AIR Line Replacement Proper RoutingProcedure if Rotor is Binding Pump RotorInstalling the New Assembly Ignition Control AssemblyRemove Old Assembly FANIllustrated Parts Breakdown Motor and Pump Assembly35,000 BTU/HR Model Parts List Number Description QTY50,000 BTU/HR Model FHPF3-5C 70,000 BTU/HR Model Parts List NTH100-2 100,000 BTU/HR Model NTH100-2 NTH150-2 150,000 BTU/HR Model NTH150-2 Wheels Handles 100,000 and 150,000 BTU/HR ModelsSpecifications Wiring DiagramAIR Gauge KIT HA1180 AccessoriesIgnition Control ASSEMBLY/PHOTOCELL Tester HA1170 Heavy Duty Wheels and Handle KIT HA1202EC Conformity Declaration EC Conformity DeclarationWarranty Information

NTH35-2, NTH70-2, NTH50-2, NTH100-2, NTH150-2 specifications

Desa NTH series includes advanced models like NTH150-2, NTH70-2, NTH50-2, NTH100-2, and NTH35-2. Each of these models is designed to cater to diverse needs in heating, ventilation, and air conditioning systems, ensuring optimal performance and energy efficiency.

The NTH150-2 is a powerful unit boasting an output capacity of 150,000 BTU. It features a dual-stage heating system, allowing for rapid temperature changes while maintaining energy efficiency. This model is equipped with advanced sensor technology that automatically adjusts the heating output based on room conditions, creating a comfortable indoor environment. Additionally, its robust build ensures durability and longevity.

Next in line is the NTH70-2, a medium-capacity heater suitable for residential settings. This model focuses on user-friendliness with an intuitive digital control panel, offering precise temperature settings and timer functions. The NTH70-2 is also designed with an eco-mode feature, significantly reducing energy consumption while still delivering consistent heating performance.

The NTH50-2 is designed for smaller spaces, providing an output of 50,000 BTU. This model emphasizes portability with a compact design and lightweight construction. It includes safety features like overheat protection and automatic shut-off, making it an excellent choice for individual rooms or smaller apartments. Its noise-reduction technology also ensures quiet operation, enhancing user comfort.

The NTH100-2 strikes a balance between capacity and efficiency, making it a versatile option for various applications. This model incorporates modern inverter technology, enabling it to adjust its power usage based on demand. This results in lower energy bills without compromising the heating experience. The NTH100-2 is also equipped with Wi-Fi connectivity, allowing users to control their heating system remotely via a smartphone app.

Finally, the NTH35-2 serves as an energy-efficient solution for extremely small spaces or as a supplemental heating source. It features low-energy heating technology, which ensures that operational costs remain minimal. This unit is praised for its easy installation and maintenance, making it an ideal choice for those looking for practicality without sacrificing performance.

Overall, the Desa NTH series exemplifies a commitment to innovative heating solutions, blending advanced technology, user-friendly designs, and energy efficiency to meet a wide range of indoor climate needs.
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