| 摘要 |
PURPOSE:To provide a method of controlling the amount of hot water to be filled which is compact in the execution work, inexpensive in cost and convenient for use by burning a bath burner only for a certain specific time and computing the necessary amount of hot water to be filled based on a difference in temperature between residual water before and after the burning. CONSTITUTION:When a bath flowing water switch 7 is turned ON, the temperature t1 ( deg.C) of residual water is detected by a bath temperature detector 8 and this is stored in a bath computing circuit 18. Then, the bath computing circuit 18 outputs a signal to a timer circuit 21, and a relay K4 is actuated only during a specific time T(hr). A contact SW4 of a bath proportional valve 25 is closed by this period of time to burn a bath burner 10. Further, the bath computing circuit 18 judges that there is no residual water in the bathtub in a case where the bath flowing water switch 7 is not turned ON inspite of the operation of a pump 6, and computes the full hot water filling amount required for the bathtub. Thereafter, a water filling signal is input to a water electromagnetic valve driving circuit 23 and a water amount computing circuit 20. |
