| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that if heating of hot water for hot-water heating and supply of hot water for hot water supply are simultaneously performed in a conventional water heater system having a hot water storage tank with an auxiliary heat source, an auxiliary heat source machine for hot water heating is brought into a state of constant driving even during hot water supply, causing a problem in the energy-saving property. <P>SOLUTION: The water heater system 1 having the hot water storage tank with the auxiliary heat source includes: an inside circulation path which is branched at an outlet side of an auxiliary heat source machine 15 and is returned to the inlet side; a hot water supply part for supplying hot water stored in a hot water storage tank 70 from the outlet side of the auxiliary heat source machine 15; a heating hot water supply part using the auxiliary heat source machine 15 as a heating source to indirectly heat a hot water heating device 5 through the inside circulation path; and a switching means 80 which if a temperature of hot water stored in the hot water storage tank 70 is a predetermined temperature or more, switches to a flow path 81 for bypassing to a downstream side of a diverging part of the inside circulation circuit, at the outlet side of the auxiliary heat source machine without passing through the auxiliary heat source machine 15 from the upstream side of a merging part of the inside circulation circuit, at the inlet side of the auxiliary heat source machine 15. <P>COPYRIGHT: (C)2012,JPO&INPIT |
