REFRIGERATOR.

摘要

Liquid lines (5LA, 5LB) and gas lines (5GA, 5GB) are connected to a main liquid line (4L) and to a main gas line (4G), respectively, so that a master outdoor unit (2A) and a slave outdoor unit (2B) can be connected in parallel. The gas line (5GB) for the outdoor unit (2B) is provided with a gas stop valve (V2) which is fully closed when the slave outdoor unit (2B) is not in heating mode. The liquid line (5LB) for the outdoor unit (2B) is provided with a liquid stop valve (V1) which is fully closed when the slave outdoor unit (2B) is not in either cooling or heating mode. This construction can prevent liquid compression and insufficiency of a cooling medium. <IMAGE>