A ducted split system with multiple indoor units, also known as a multi-split or multi-zone system, is a type of air conditioning system that allows you to cool multiple rooms or zones within a building using a single outdoor unit and a network of ducts. Here's how it works:
Outdoor Unit: The system starts with an outdoor unit, which contains the compressor, condenser coil, and the necessary components for heat exchange. This unit is responsible for dissipating heat from the refrigerant and cooling it down.
Indoor Units: Each indoor unit is installed in a separate room or zone that you want to cool. These indoor units are typically mounted on the ceiling or walls, and they contain an evaporator coil and a fan. The number of indoor units can vary depending on the capacity of the outdoor unit and the number of rooms you want to cool.
Refrigerant Flow: The refrigerant is a special chemical that is used to transfer heat in the air conditioning system. It circulates between the outdoor unit and the individual indoor units through a series of copper pipes and tubes. When the refrigerant flows through the indoor unit's evaporator coil, it absorbs heat from the room's air, cooling it down.
Ductwork: Ducts are used to distribute the cooled air from the indoor units to different areas within the building. The ductwork is concealed within the walls, ceilings, or floors, and it allows for even and efficient cooling throughout the various zones.
Thermostat and Control System: The system is typically controlled by a central thermostat, which can be programmed to set different temperatures for each zone. The control system also enables you to adjust the fan speed, airflow, and other settings for individual indoor units or groups of units.
Zone Control: One of the key advantages of a multi-split system is that it allows for zone control. This means you can cool specific areas or rooms independently, depending on your needs. For example, you can set a different temperature for the living room and the bedrooms, optimizing energy efficiency and comfort.
Heat Pump Functionality (Optional): Some multi-split systems also come with heat pump functionality, allowing them to provide both cooling and heating. In heating mode, the refrigerant flow is reversed, and the system extracts heat from the outside air and transfers it indoors.
Overall, a ducted split system with multiple indoor units provides a flexible and efficient solution for cooling or heating multiple areas within a building, making it a popular choice for residential and commercial applications alike.