AIR CONDITIONER AND RELAYING DEVICE

摘要

To obtain an air-conditioner apparatus that can achieve energy-saving without making refrigerant circulate up to an indoor unit and whose construction work is easy. A refrigeration cycle is configured by connecting a compressor 10, a four-way valve 11, a heat source side heat exchanger 12, expansion valves 16a to 16e, and intermediate heat exchangers 15a and 15b by piping. A heat medium circulation circuit is configured by connecting intermediate heat exchangers 15a and 15b, pumps 21a and 21b, and use side heat exchangers 26a to 26d by piping. The outdoor unit 1 that is installed in a space such as outdoors of the building 9 and accommodates the compressor 10, the four-way valve 11, and the heat source side heat exchanger 12, and the relay unit 3 that is installed in a non-subject space 8 which is different from an indoor space 7 and is on a installation floor separated by two or more floors and accommodates the expansion valves 16a to 16e, the pump 21, and intermediate heat exchangers 15a and 15b are connected by two pipelines. The relay unit 3 and an indoor unit 2 that accommodates use side heat exchangers 26a to 26d and is installed at a position where an indoor space 7 can be air-conditioned are connected by two pipelines from outside of the wall which is a partition between inside and outside of the room.