Split Air Conditioner (Wall Mounted)
The book “Split AC (Wall Mounted)” is an important part of the ITI Refrigeration and Air Conditioning (RAC) trade. It provides detailed knowledge about the design, construction, working, installation, and maintenance of wall-mounted split air conditioning systems. These systems are widely used in residential and commercial applications due to their efficiency, quiet operation, and modern appearance.
Introduction to Wall Mounted Split AC
A wall-mounted split air conditioner is a type of air conditioning system where the indoor unit is mounted on a wall inside the room, and the outdoor unit is installed outside the building. The two units are connected by refrigerant piping, electrical wiring, and a drainage system.
This type of AC is designed to provide efficient cooling with minimal noise and is suitable for small to medium-sized rooms.
Main Components
The wall-mounted split AC consists of two main units:
Indoor Unit
- Evaporator Coil: Absorbs heat from indoor air
- Blower Fan: Circulates cooled air into the room
- Air Filter: Removes dust and pollutants
- Drain Tray and Pipe: Removes condensate water
- Control Panel: Contains electronic controls and display
Outdoor Unit
- Compressor: Compresses refrigerant and circulates it
- Condenser Coil: Releases heat to the atmosphere
- Condenser Fan: Enhances heat dissipation
- Protective Casing: Protects components from weather
Working Principle
The working of a wall-mounted split AC is based on the vapor compression refrigeration cycle:
- The evaporator absorbs heat from indoor air, cooling the room.
- The compressor compresses refrigerant vapor to high pressure.
- The condenser releases heat to the outside air.
- The expansion device reduces pressure and temperature of refrigerant.
This continuous cycle maintains the desired temperature inside the room.
Construction Features
Wall-mounted split AC units are designed with compact and aesthetic indoor units that blend with room interiors. The outdoor unit is robust and weather-resistant.
- Lightweight indoor unit for easy wall mounting
- Horizontal air discharge for uniform cooling
- Efficient airflow design
Installation of Wall Mounted Split AC
Proper installation is essential for efficient operation:
- Select a suitable location on the wall for indoor unit
- Ensure proper distance between indoor and outdoor units
- Provide proper insulation for refrigerant pipes
- Ensure correct electrical connections and earthing
- Maintain proper slope for condensate drainage
Advantages
- Quiet operation
- Energy efficient
- Modern and attractive design
- Easy to operate with remote control
Limitations
- Higher initial cost compared to window AC
- Requires professional installation
- Maintenance may require skilled technicians
Maintenance and Servicing
Regular maintenance is necessary for efficient performance:
- Clean air filters regularly
- Check refrigerant levels
- Clean evaporator and condenser coils
- Inspect electrical components
Proper servicing ensures long life and efficient operation.
Applications
Wall-mounted split AC systems are widely used in:
- Homes and apartments
- Offices and cabins
- Small commercial spaces
Conclusion
The book “Split AC (Wall Mounted)” provides essential knowledge about one of the most commonly used air conditioning systems. It helps students and technicians understand the construction, working, installation, and maintenance of these systems.
With increasing demand for efficient and comfortable cooling, wall-mounted split air conditioners have become a standard solution. Proper knowledge and handling ensure optimal performance and long-term reliability in RAC applications.