The definition of a split HVAC system diagram is a visual representation of the components of a split HVAC system. This type of system is typically used in larger buildings, such as commercial or industrial buildings, and consists of two separate units: an outdoor condenser and an indoor air handler. The diagram will show the components of the system, including the compressor, condenser, evaporator, and expansion valve, as well as the refrigerant lines that connect them. It will also show the ductwork and vents that allow the conditioned air to be distributed throughout the building. By looking at the diagram, it is easy to see how the components of the system interact with each other to provide the desired heating and cooling. Understanding the components of a split HVAC system is essential for proper installation and maintenance of the system.