I am a confused by the term Main Pipe in the AirConditioner:VariableRefrigerantFlow:FluidTemperatureControl object. In particular by the field Diameter of Main Pipe Connecting Outdoor Unit to Indoor Units. Is the main pipe supposed to include the piping from the outdoor air unit to the branch controller and to the indoor unit?
As far as I know the pipe diameter between each element (outdoor air unit, branch controller and indoor unit) is not necessarily the same and some manufacturers seem to refer to the piping between the the outdoor air unit and the branch controller only as the main pipe (example, Table 8, page 21).
