Heat pump hot water system , heat pump unit and the relay unit of heat pump type hot water supply system of heat pump type hot water supply system

摘要

PROBLEM TO BE SOLVED: To prevent a relay unit provided with no fire prevention measures from being erroneously connected to a heat pump unit in which a flammable refrigerant flows.;SOLUTION: In this heat pump type hot water supply unit 100, the heat pump unit 1 having a compressor 3 for compressing the refrigerant is connected with the relay unit 2 which connects the heat pump unit 1 with a load side, and a fluid heated by the refrigerant flows in the relay unit 2. The heat pump unit 1 has first information concerning the flammability of refrigerants usable for the heat pump unit 1, and the relay unit 2 has second information concerning fire prevention measures to the flammable refrigerant of the relay unit 2.;COPYRIGHT: (C)2012,JPO&INPIT