Water heating installation for domestic supply, has four-way control valve operating between position in which heat exchange circuit forms closed circuit and another position in which exchange circuit communicates with heating system

摘要

The installation has a heat pump (2) connected to a heat exchange circuit (4) by a circuit (3). A heating system (6) distributes a heat exchange fluid to a heating apparatus (61). A four-way control valve (8) is connected to the exchange circuit and the system. The valve operates between a position in which the exchange circuit forms a closed circuit, and another position in which the exchange circuit communicates with the system.