HEAT PUMP HOT AND COLD WATER SYSTEM

摘要

In the case where one of a first heat source unit 11 and a second heat source unit 21 performs a heating operation and the other one of the first heat source unit 11 and the second heat source unit 21 performs a defrosting operation, when the heating operation of the one heat source unit becomes inexecutable, a control unit 17 stops the defrosting operation of the other heat source unit and reduces the volume of water flowing out of a water heat exchanger 14 or 24 of the other heat source unit to a joining point 40a.