11 HEATING INSTALLATIONS, NAMELY, HOT WATER HEATING INSTALLATIONS, RADIATORS, ELECTRIC HEATING CABLES, HEATING BOILERS, HEAT PUMPS, HEAT AND STEAM ACCUMULATORS, HEAT EXCHANGERS NOT BEING PARTS OF MACHINES, SOLAR COLLECTORS FOR HEATING INSTALLATIONS, HOT-WATER SPACE HEATING APPARATUS; HEATING APPARATUS, NAMELY, HEAT PUMPS FOR DOMESTIC HOT WATER CIRCULATORS, HEAT PUMPS FOR SECONDARY CIRCULATORS FOR MECHANICAL BUILDING AND INDUSTRIAL SERVICES, SOLAR THERMIC HEAT PUMPS AND PARTS THEREFOR; HOT-WATER HEATERS, NAMELY, CENTRAL HOT WATER HEATERS, HOT WATER CIRCULATING PUMPS FOR HOT WATER CIRCULATORS, SECONDARY AND SERVICE WATER HEATERS AND OPEN CONDENSATION WATER HEATERS, GLANDLESS PUMPS FOR HOT WATER HEATERS OF ALL KINDS, AIR CONDITIONING PLANTS, CLOSED CHILLED WATER CIRCULATORS, INDUSTRIAL CIRCULATORS AND PARTS THEREFOR; HOT WATER APPARATUS, NAMELY, HOT WATER TANKS, HEATING BOILERS, NAMELY, ELECTRICAL BOILERS, FURNACE BOILERS, INDUSTRIAL BOILERS; HEATING ELEMENTS, NAMELY, ELECTRICAL HEATING CABLES; AIR CONDITIONING INSTALLATIONS, NAMELY, GLANDLESS PUMPS; HEAT PUMPS; HEAT ACCUMULATORS; PRESSURE ACCUMULATORS AS PART OF HEATING AND WATER CONDUIT INSTALLATION, NAMELY, HEAT ACCUMULATORS AND STEAM ACCUMULATORS