name clash: HVAC used twice

Created by: thorade

Your AixLib.package.mo has an annotation which libraries it uses:

annotation(uses(Modelica(version = "3.2.1"), HVAC(version="2.2")));

But HVAC is also used for AixLib.HVAC (and for the directory that contains that sub-package), resulting in an error message when opening AixLib in Dymola. Maybe the library should be renamed LibHVAC or something more meaningful and unique. Maybe you want, in addition, completely remove the uses HVAC annotation, because most users of AixLib do not have access to that library.