| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent hunting by forcedly fully closing the hot water side of a mixing valve, when a hot water supply device is in a state not allowing hot water supply. <P>SOLUTION: The connecting unit comprises a first flow rate comparison means 341 comparing, when the mixing valve 331 is operated in a direction of increasing the ratio of hot water, a detected flow rate of a mixed water flow sensor 332 with a first threshold; a mixing valve stopping means 423 fixing, when the detected flow rate is below the first threshold, the opening of the mixing valve 331; a bypass valve opening means 343 opening a high-temperature hot water supply prevention valve 314; and a second flow rate comparison means 344 fixing, when the high-temperature hot water supply prevention valve 314 is opened, and the detected flow rate of the flow rate sensor 332 is a second threshold or more, the mixing valve 331 to a full-opening state of a cold water-side valve. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
