| 摘要 |
PURPOSE:To prevent temperature of hot water to be fed to a bathtub at the feed point thereof from falling largely by predicting amount of fall in hot-water temperature due to radiation of heat during the time while the hot water is sent from a hot-water apparatus to the bathtub, and by adding the predicted amount of fall to a hot-water feed set temperature to obtain a hot-water delivery temperature so that the hot water is delivered from the hot-water apparatus at that temperature. CONSTITUTION:At the time of feeding hot water, a fall in temperature of hot water during the time while the hot water is sent from a hot-water apparatus 24 to a bathtub 10 is computed and stored from the data such as hot-water delivery temperature of the apparatus 24, the time period of make-up firing following the feed of hot water, time and temperature of make-up firing stored beforehand. For feeding hot water to the bathtub, when a hot-water feed temperature is set, the fall in temperture computed and stored is added to a set temperature of hot water to be fed to the bathtub to obtain a hot-water delivery set temperature of the hot-water apparatus 24. As a result, even if the bathtub and hot-water apparatus are located away from each other, feed temperature of hot water at the bathtub is prevented from becoming largely lower than the set temperature. |
