application rating conditions are published by the manufacturer or supplier EN 14511-1:2004 (E) 9 2.43 basic multi-split system split system incorporating a single refrigerant circuit, with one or more compressors, multiple indoor units designed for individual operation and one outdoor unit. The system has no more than two steps of control by either two compressors or by compressor unloading and is capable of operating either as an air-conditioner or a heat pump. A system having a variable speed compressor where a fixed combination of indoor units is specified by the manufacturer is also considered as a basic multi-split system 2.44 multiple circuit multi-split system split system incorporating multiple refrigerant circuits, two or more single speed compressors, multiple indoor units and an integrated heat exchanger in a single outdoor unit and is capable of operating either as an air conditioner or a heat pump 2.45 modular multi-split system split system air conditioner or heat pump incorporating a single refrigerant circuit, at least one variable speed compressor or an alternative compressor combination for varying the capacity of the system by three or more steps, multiple indoor units, each of which can be individually controlled, one or more outdoor units and is capable of operating either as an air conditioner or a heat pump 2.46 modular heat recovery multi-split system split system air conditioner or heat pump incorporating a single refrigerant circuit, at least one variable-speed compressor or an alternate compressor combination for varying the capacity of the system by three or more steps, multiple indoor units, each capable of being individually controlled and one or more outdoor units. This system is capable of operating as a heat pump where recovered heat from the indoor units operating in the cooling mode can be transferred to one or more units operating in the heating mode NOTE This may be achieved by a gas/liquid separator or a third line in the refrigeration circuit. 2.47 rated capacity capacity measured in the standard rating conditions 2.48 system capacity capacity of the system when all outdoor and indoor units are operating in the same mode 2.49 system reduced capacity capacity of the system when some of the indoor units are disconnected 2.50 system capacity ratio ratio of the total stated cooling (heating) capacity of all operating indoor units to the stated cooling (heating) capacity of the outdoor unit at the rating conditions 2.51 heat recovery efficiency HRE ratio of the total capacity of the system (heating plus cooling capacity) to the effective power input when operating in the heat recovery mode 2.52 standard air dry air at 20 °C and at standard barometric pressure of 101,325 kPa, having a mass density of 1,204 kg/m³ EN 14511-1:2004 (E) 10 3 Classification The units are denominated in such a way that the heat transfer medium for the outdoor heat exchanger is (责任编辑：admin) |
