The building's air-conditioning systems are defined in two sections of the tree diagram on the left-hand side of the "Building" tab:

• Terminal units (within each "Zone" section)
  These are the units that are located in the spaces and that come into contact with the air in the spaces.
• Air-conditioning systems (in the specific "Air-conditioning systems" section)
  Centralised production units and centralised air-conditioning units serving terminal units or other air-conditioning systems. Together with the centralised units, the relevant characteristics of the working fluid distribution network are also defined.

These elements can be managed using the corresponding options in the "Air conditioning systems" group of the upper toolbar.

More information on the definition and editing of air-conditioning systems and terminal units in the program can be found on the following detailed information page: