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Railway HVAC Systems. These are self contained systems that regulate the interior climate of rolling stock and are essential for maintaining passenger comfort and equipment performance across varying environmental conditions. Key components of the systems include compressors, air filters, evaporators, and control units. They include a refrigeration unit and are pre-charged with HFCs. There is no heat pump present. The frame is typically built from aluminium or stainless steel.

AIR CONDITIONING "SPLIT-SYSTEM" COMPRISING OF A UNIT WHICH IS AN INDOOR UNIT AND IS WALL MOUNTED. IT IS NOT PRE-CHARGED WITH HFC. IT IS DESIGNED TO WORK TOGETHER WITH ANOTHER UNIT AS A "SPLIT-SYSTEM". THEY CANNOT WORK SEPARATELY. THIS IS SPECIFICALLY DESIGNED FOR ROOM AIR CONDITIONING. THE SYSTEM CONSISTS OF ONE OUTDOOR UNIT AND ONE INDOOR UNIT LINKED BY REFRIGERANT PIPING, ALTHOUGH PACKAGED INDIVIDUALLY IT IS NOT A STAND ALONE PRODUCT AND NO FUNCTION CAN BE PERFORMED WITHOUT THE OTHER UNIT.

AIR CONDITIONING "SPLIT-SYSTEM" COMPRISING OF 2 INDOOR UNITS WHICH ARE NOT PRE-CHARGED WITH HFC. THESE UNITS ARE DESIGNED TO WORK TOGETHER AS A "MULTI SPLIT-SYSTEM". THESE ARE SPECIFICALLY DESIGNED FOR ROOM AIR CONDITIONING. THE UNITS ARE LINKED BY REFRIGERANT PIPING TO AN OUTDOOR UNIT, NEEDING INSTALLATION AT THE SITE OF USAGE. ALTHOUGH PACKAGED INDIVIDUALLY IT IS NOT A STAND ALONE PRODUCT AND NO FUNCTION CAN BE PERFORMED WITHOUT THE OTHER UNITS.

AIR CONDITIONING "SINGLE SPLIT-SYSTEM" COMPRISING OF A UNIT WHICH IS AN INDOOR UNIT. IT IS NOT PRE-CHARGED WITH HFC. IT IS DESIGNED TO WORK TOGETHER WITH ANOTHER UNIT AS A "SINGLE SPLIT-SYSTEM". IT CANNOT WORK SEPARATELY AND IS SPECIFICALLY DESIGNED FOR ROOM AIR CONDITIONING. ALTHOUGH PACKAGED INDIVIDUALLY IT IS NOT A STAND ALONE PRODUCT AND NO FUNCTION CAN BE PERFORMED WITHOUT THE OTHER UNIT.

AIR CONDITIONING "MULTI SPLIT-SYSTEM" COMPRISING OF INDOORS AND OUTDOORS UNITS WHICH ARE NOT PRE-CHARGED WITH HFC. MULTI SPLIT AIR CONDITIONING SYSTEMS ARE DEFINED AS SYSTEMS FOR AIR CONDITIONING THAT CONSIST OF ONE OUTDOOR UNIT AND MULTIPLE INDOOR UNITS LINKED BY REFRIGERANT PIPING, NEEDING INSTALLATION AT THE SITE OF USAGE. INDOOR AND OUTDOOR UNITS COME IN INDIVIDUAL BOXES. ALTHOUGH PACKAGED INDIVIDUALLY THEY ARE NOT STAND ALONE PRODUCTS AND NO FUNCTION CAN BE PERFORMED WITHOUT THE OTHER UNITS.