摘要 |
PURPOSE:To shorten a hot water feeding waiting time under a simple configura tion in the case that a hot water feeding plug is opened during tepid hot water controlling operation. CONSTITUTION:In the case that a cold water feeding valve is opened to feed cold water (S13), the cold water feeding valve is closed at a specified period, an opening or closed state of the hot water feeding plug is judged in response to a sensing of water flow (S17 to S20). In the case that the water flow is detected (when the hot water feeding plug is opened), tepid water control is terminated. As a result, it becomes possible to eliminate any disadvantage that the hot water feeding is waited until a specified amount of additional water is finished. |