7.5.2.3 IfcAirToAirHeatRecoveryTypeEnum to be generalized into IfcHeatRecoveryTypeEnum

Dear All,
the Heat Recovery could also be based on other types rather than Air-to-Air.

It would make sense to introduce Heat Pumps as a Super Type or somehow integrate it here.
Heat Pumps with Types: Air Source [package/split] (also air-to-water/air-to-air), Heat Recovery (which is this one) and Geothermal (also brine-to-water or water-to-water) [Water/Ground].

Thanks for your support.

All the best
Mirbek Bekboliev from bSI Building Room Steering Committee

The issue proposes generalizing IfcAirToAirHeatRecoveryTypeEnum into IfcHeatRecoveryTypeEnum and considering heat pumps as a supertype, but it names no files, tests, or entry points. First clarify the intended IFC schema design and scope with the maintainers; done means an agreed model change covering the listed heat-pump types.

Written by the indexing model from the issue text.