| 摘要 |
PURPOSE:To enable to control proper hot water temperature by a method wherein a mixing valve is driven by a detected hot water temperature and the set hot water temperature and the temperature setting is timewise changed within the predetermined range by a signal generating part. CONSTITUTION:A driving device 13 to drive a mixing valve 7, which changes the mixing ratio of water entering from a water side inlet 8 to hot water entering from a hot water side inlet 9, is controlled by the hot water temperature detected by a temperature detector 17 and the signal sent from a temperature setter 18 and at the same time a mixed hot water temperature controller 19 changes the hot water temperature by means of a signal generating part 20 and a memory part 21, which changes the temperature setting timewise. Thus, the control of the timewise change of mixed hot water temperature, which has not been done heretofore, can be done by optional setting. |
