Air conditioning machines incorporating a refrigerating unit and a valve for reversal of the coolingheat cycle "reversible heat pumps" (excl. of a kind used for persons in motor vehicles and selfcontained or "splitsystem" window or wall air conditioning machines)
Air conditioning machines comprising a motordriven fan, not incorporating a refrigerating unit but incorporating elements for changing the temperature and humidity (excl. of a kind used for persons in motor vehicles, and selfcontained or "splitsystem" window or wall air conditioning machines)
Air conditioning machines incorporating a refrigerating unit but without a valve for reversal of the coolingheat cycle (excl. of a kind used for persons in motor vehicles, and selfcontained or "splitsystem" window or wall air conditioning machines)