11 Air-conditioning apparatus; Air-conditioning installations; Heating installations; Separators for the cleaning and purification of liquids; Air-conditioning, air cooling and ventilation apparatus and instruments; Hot air heating apparatus; Hot water tanks; Replacement parts for heating installations, namely, tanks, valves, diffusers, heat exchangers, air separators, strainers, air receivers, flow diverters, and pump connectors; Valves for air conditioners; Water heating installations