Desa NTH35-2, NTH50-2 Storing TRANSPORTING, or Shipping, Preventative Maintenance, Schedule

Page 6

PORTABLE FORCED AIR HEATERS

STORING,

TRANSPORTING, OR SHIPPING

Note: If shipping, transport companies re- quire fuel tanks to be empty.

1.Drain fuel tank.

Note: Some models have drain plug on underside of fuel tank. If so, remove drain plug to drain all fuel. If heater does not have drain plug, drain fuel through fuel cap opening. Be sure all fuel is removed.

2.Replace drain plug if provided.

3.If any debris is noted in old fuel, add 1 or 2 quarts of clean kerosene to tank, stir, and drain again. This will prevent excess debris from clogging filters dur- ing future use.

4.Replace fuel cap or drain plug. Prop- erly dispose of old and dirty fuel. Check with local automotive service stations that recycle oil.

5.If storing, store heater in dry place. Make sure storage place is free of dust and corrosive fumes.

IMPORTANT: Do not store kerosene over summer months for use during next heating season. Using old fuel could damage heater.

PREVENTATIVE

WARNING: Never service heater

MAINTENANCE

while it is plugged in, operating, or hot.

SCHEDULE

Severe burns and electrical shock can

occur.

 

 

Item

How Often

How To

Fuel tank

Flush every 150-200 hours of

See Storing, Transporting, or Ship-

 

operation or as needed

ping

Air output and

Replace every 500 hours of

See Air Output, Air Intake, and Lint

lint filters

operation or once a year

Filters, page 10

Air intake filter

Wash and dry with soap and

See Air Output, Air Intake, and Lint

 

water every 500 hours of op-

Filters, page 10

 

eration or as needed

 

Fuel filter

Clean twice a heating season

See Fuel Filter, page 8

 

or as needed

 

Ignitor

No maintenance required

 

Fan blades

Clean every season or as

See Fan, page 13

 

needed

 

Motor

Not required/permanently lu-

 

 

bricated

 

TROUBLESHOOTING

WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur.

ATTENTION: The ignition control has built-in protection against current overloads. Use the light in the ON/OFF switch to troubleshoot the fault condition.

FAULT CONDITION

POSSIBLE CAUSE

REMEDY

Motor does not start five seconds after heater is plugged in (ON/OFF switch light remains on)

1.Bad electrical connection between motor and ignition control assembly or ignition control assembly and power cord

1.Check all electrical connections. See Wiring Diagram, page 25

 

 

WARNING: High voltage!

 

 

 

 

 

 

 

2.

Binding pump rotor

2.

If fan does not turn freely, see Pump

 

 

 

 

Rotor, page 12

3.

Defective ignition control assembly

3.

Replace ignition control assembly

4.

Defective motor

4.

Replace motor

6

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Contents Portable Forced AIR Heaters Safety Information Portable Forced AIR HeatersProduct Identification UnpackingFuels Assembly VentilationTools 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 FANMotor and Pump Assembly Illustrated Parts Breakdown35,000 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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