| 摘要 |
PURPOSE:To improve facility of operation by a method wherein it is decided whether a present time is an awakening time zone or a sleeping time zone, a hot water temperature set value is increased when it is the awakening time zone, and a hot water temperature set value is set to a low value when it is the sleeping time zone. CONSTITUTION:A present time is inputted to a timer deciding means from a timer means 24, an awakening time zone is inputted thereto from a timer set means 25, and a sleeping time zone is inputted thereto from a sleeping time set means 26. It is decided whether a present time is within the awakening time zone, the sleeping time zone, or the other time zone than the above. When the present time is within the awakening time, a hot water temperature set means 28b selects a higher set temperature for an awakening time from a set hot water temperature memory means 28a to set the temperature. Meanwhile, when the present time is within a sleeping time, the hot water temperature selecting means 28b selects and sets a lower set temperature for a sleeping time. When the present time is other time zone than the awakening time zone and the sleeping time zone, temperature is set to an ordinary set value. From the set temperature and a feed hot water temperature detected by a hot water temperature detecting means 21, a temperature deviation is determined, an energizing amount to correct the deviation is decided by an energizing amount set means 29 and a result is outputted to a hot water feed means 10. |
