Desa R115T Service Procedures, Upper Shell Removal, Fan, AIR OUTPUT, AIR INTAKE, and Lint Filters

Models: B115T R115T REM115T

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OWNER’S MANUAL

SERVICE

PROCEDURES

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

UPPER SHELL REMOVAL

1.Remove screws along each side of heater using 5/16" nut-driver. These screws attach upper and lower shells together.

2.Lift upper shell off.

3.Remove fan guard.

Upper

ShellFan

Guard

Figure 4 - Upper Shell Removal

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 above).

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 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 5).

7.Place setscrew on flat of shaft. Tighten setscrew firmly (40-50 inch-pounds).

8.Replace fan guard and upper shell.

Fan

Motor

Flush

Motor

Shaft

Setscrew

Figure 5 - Fan Cross Section

AIR OUTPUT, AIR INTAKE, AND LINT FILTERS

1.Remove upper shell (see Upper Shell Removal, column 1).

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 5).

6.Replace filter end cover.

7.Replace fan guard and upper shell. IMPORTANT: Do not oil filters.

Air Intake Filter

Filter End Cover

Fan Guard

Lint Filter

Air Output Filter

Figure 6 - Air Output, Air Intake, and Lint Filters

PUMP PRESSURE

ADJUSTMENT

1.Remove pressure gauge plug 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.Using a flat blade screwdriver, adjust pressure. Turn relief valve to right to increase the pressure. Turn relief valve to left to decrease the pressure. Set pump pressure at 5.3 PSI.

5.Stop heater (see Operation, page 5).

6.Remove pressure gauge. Replace pres- sure gauge plug in filter end cover.

Relief

Valve

Pressure

Gauge

Plug

Figure 7 - Pressure Gauge Plug Removal

Pressure

Gauge

Figure 8 - Adjusting Pump Pressure

Continued

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Desa R115T, REM115T, B115T Service Procedures, Upper Shell Removal, Fan, AIR OUTPUT, AIR INTAKE, and Lint Filters

B115T, R115T, REM115T specifications

Desa R115T, B115T, and REM115T are models of advanced heating and cooling systems designed to provide optimal performance and efficiency in climate control. These systems have been engineered to meet the diverse needs of both residential and commercial spaces, ensuring comfort regardless of external weather conditions.

The Desa R115T is known for its robustness and reliability. Featuring a powerful heating component, it employs a high-efficiency burner that maximizes heat output while minimizing fuel consumption. The unit integrates state-of-the-art digital controls, allowing for precise temperature settings and scheduling. Key features include a quick warm-up time, quiet operation, and a durable construction that ensures longevity, making it suitable for various applications.

On the other hand, the Desa B115T focuses on versatility and user-friendliness. This model features a dual fuel capability, allowing it to operate on both propane and natural gas, providing flexibility based on availability and preference. Its advanced thermostat offers smart capabilities, enabling remote access via smartphone applications. The B115T’s sleek design and compact size make it an ideal choice for urban environments where space is limited.

The REM115T is another impressive option, primarily distinguished by its eco-friendly design. This model utilizes advanced heat pump technology that extracts heat from the surrounding air, significantly reducing carbon emissions. It is equipped with a variable-speed compressor that adjusts to the heating and cooling demands, providing energy efficiency that can lead to substantial savings on utility bills. The REM115T also includes a built-in air purification system, improving indoor air quality by reducing allergens and pollutants.

All three models boast advanced insulation to enhance their energy efficiency ratings, contributing to lower operational costs. They are equipped with user-friendly interfaces, allowing for easy monitoring and adjustment of settings. Furthermore, their compatibility with smart home systems makes them a modern solution for environmentally conscious users seeking automated comfort.

Overall, Desa R115T, B115T, and REM115T are exemplary models of heating and cooling technology, each offering unique features and capabilities tailored to meet diverse needs while ensuring efficient and reliable climate control. With their cutting-edge technologies, these systems exemplify the future of home and commercial heating solutions.