VRF

The VRF system is composed of several main components, each playing a specific role in the overall system operation
The outdoor unit contains the compressor and heat exchanger, responsible for supplying refrigerant and controlling the system pressure
Indoor units come in various types, such as wall-mounted, ceiling-suspended, cassette, and ducted units, and are responsible for distributing cooled or heated air within the indoor space
Electronic Expansion Valves (EEVs) are installed near each indoor unit and regulate the amount of refrigerant entering the evaporator
Refrigerant piping provides the path for transferring refrigerant between the outdoor and indoor units, typically consisting of two or three pipes depending on whether the system is Heat Pump or Heat Recovery
Local controllers are used for each indoor unit, allowing independent temperature adjustment in each space
Finally, a central controller can manage all units within the system collectively, especially useful in large projects or          multi-section buildings