| 摘要 |
PURPOSE:To permit the correct detection of a hot-water temperature as well as the keeping of the optimum hot-water temperature by a method wherein the title is provided with a temperature detection limiting means, which limits a temperature detector so as not to detect a hot-water temperature during the counting of a counting means which is operated by the operating signal of a pump to count a predetermined period of time. CONSTITUTION:A bathtub water heating unit, circulating the bathtub water by a pump 5 through a heat source equipment 1 and a bathtub 2 and operating the heat source equipment 1 by the temperature signal of a hot-water temperature detector 8, is provided with a counting means 6 and a temperature detection limiting means 7. The counting means 6 is operated by an operating signal for operating the pump 5 and counts a predetermined period of time required for making the hot-water temperature of a temperature detecting unit equal to the hot-water temperature in the bathtub 2. On the other hand, the temperature detection limiting means 7 is provided with a function to limit so as not to effect temperature detection during the counting of the counting means 6. Accordingly, correct measurement may be effected while detecting the hot-water temperature of the bathtub from a remote place, therefore, temperature control may be effected correctly, heat energy loss may be reduced as much as possible and economical operation may be realized. |
