| 摘要 |
PROBLEM TO BE SOLVED: To provide a water heating system in which an accumulated hot-water supply amount into a bathtub (hot-water supply amount) is not changed by water supply from a hot-water supply pipe of another system such as a kitchen even during water supply to the bathtub and the water-supply amount from a hot-water supply pipe of a different system can be individually and accurately detected. SOLUTION: An outlet of a hot-water/water mixing valve 6 is branched to two systems, a hot-water supply pipe 81 provided with a flow integrating meter 91 is connected to one of them, while a bathtub hot-water supply pipe 82 with a solenoid valve 12 controlled according to the hot-water supply and a flow integrating meter 92 arranged in series connected to the other, respectively.
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