| 摘要 |
PURPOSE:To improve handling convenience, by a method wherein the title device is provided with a control means, supplying a predetermined amount of hot-water into a bathtub automatically through a circulating circuit by first automatic hot-water supplying operation after throwing-in a power source and storing the output of a water level detecting means at that time as a reference value. CONSTITUTION:When a first automatic hot-water supplying operation is effected after throwing-in an electric power source into a device after installation, hot-water is supplied into a bathtub 6 through a circulating circuit 7, the supply of the hot-water is stopped automatically when a predetermined amount of hot-water is supplied, a pressure based on the water level of the bathtub at that time is detected by a level detecting means 12 and the output thereof is stored in a memory means 15 as a reference value. When the output of the level detecting means 12, which is corresponding to the reference water level, is stored in such a manner and, thereafter, the water level is increased (or decreased) by some height, the increase (or decrease) of the output of the level detecting means 12 is already known by the characteristics of the water level detecting means 12 itself, therefore, an arbitrary water level may be set based on the reference water level. |
