Desa NTH70, NTH150, NTH50, NTH100, NTH35 owner manual Specifications, Wiring Diagrams, Fan

Page 13

OWNER’S MANUAL

SERVICE

PROCEDURES

Continued

Fan

IMPORTANT: Remove fan from motor shaft before removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch.

1.Remove upper shell (see page 8).

2.Use 1/8" allen wrench to loosen set- screw which holds fan to motor shaft.

3.Slip fan off motor shaft.

4.Clean fan using a soft cloth moistened with kerosene or solvent.

5.Dry fan thoroughly.

6.Replace fan on motor shaft. Place fan hub flush with end of motor shaft (see Figure 30).

7.Place setscrew on flat of shaft. Tighten setscrew firmly (40-50 inch-pounds/ 4.5-5.6 n-m).

8.Replace fan guard and upper shell.

Fan

Setscrew

SPECIFICATIONS

Output Rating (Btu/Hr)

35,000

50,000

70,000

100,000

150,000

Fuel

Use Only Kerosene or No. 1 Fuel Oil

 

Fuel Tank Capacity

 

 

 

 

 

(U.S. Gal./Liters)

3.0/11.4

5.0/18.9

5.0/18.9

9.0/34

13.5/51.1

Fuel Consumption

 

 

 

 

 

(Gal. Per Hr./

 

 

 

 

 

Liters Per Hr.)

.26/1.0

.37/1.40

.49/1.85

.70/2.7

1.1/4.1

Electric Requirements

230 V/50 Hz (Same All Models)

 

 

Amperage (Normal Run)

.8

1.0

1.0

1.2

1.2

Hot Air Output

 

 

 

 

 

(CFM/CMM)

140/4

205/5.8

225/6.4

425/12

500/14.2

RPM

1425

2850

2850

2850

2850

WIRING DIAGRAMS

 

 

 

 

 

 

 

ON/Off Switch

 

 

 

Ignitor

 

 

 

B

Black

1

1a

Black

D

 

 

 

 

 

 

 

 

Spark

 

 

 

 

 

 

 

 

 

 

 

Reset

Flame-Out

 

 

 

 

 

 

Orange

Plug

 

 

 

 

 

 

Red

 

 

 

Button

Control

 

 

 

 

 

 

 

Black

 

 

 

 

 

 

 

 

 

R

 

 

Red

 

C

Red

Motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Terminal

 

Green-Yellow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Board

 

 

 

 

 

 

 

 

White

 

B

White

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Brown

 

 

 

 

 

 

A

White

 

RFI Filter

Blue

 

 

 

 

 

 

 

 

 

Blue

 

White

 

 

 

 

 

230 V~/50 Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

Photocell

 

 

 

 

 

Green-Yellow

Motor

Figure 31 - Wiring Diagram

Shaft

 

Figure 29 - Fan, Motor Shaft, and Setscrew

Location

Fan

Flush

Motor

Shaft

Setscrew

Figure 30 - Fan Cross Section

104976

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Image 13
Contents Portable Forced AIR Heaters Portable Forced AIR Heaters Safety InformationUnpacking Product IdentificationFuels Ventilation AssemblyTools Needed Theory Operation Extension Cord Wire Size RequirementsTo Start Heater To Stop HeaterStoring TRANSPORTING, or Shipping Preventative MaintenanceSchedule How Often How ToObserved Fault Possible Cause Remedy TroubleshootingUpper Shell Removal Service ProceduresFuel Filter 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 BindingWiring Diagrams SpecificationsFan NTH35 35,000 BTU/HR Model Illustrated Parts BreakdownKEY Part Number Description QTY Parts ListMotor and Pump Assembly Burner Head AssemblyNTH50 50,000 BTU/HR Model 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 Wheels Handles AccessoriesAIR Gauge KIT HA1180 Heavy Duty Wheels and Handle KIT HA1202EC 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.