| 摘要 |
PURPOSE:To accurately detect a water level at the outside of a bathroom by detecting the presence or absence of water flow by operating a pump, detecting water pressure after air purging by the operation of the pump in the case of the presence of the water flow, and detecting the pressure after the air purging by supplying the water in the case of the absence of the water flow. CONSTITUTION:An operation switch is closed, a bypass valve 15 is closed, a solenoid valve 16 is opened, a three-way valve 12 is set to a circulation side, and a pump 10 is operated. After air purging, when a water flow switch 17 is closed, the presence of residual water is judged, the pump 10 is stopped, and water pressure is sampled. If a water level does not reach a set water level, the valve 12 is switched to a hopper side, a supplying valve 6 is opened to supply hot water. If the switch 17 remains OFF, no residual water is judged. The valve 15 is opened, the valve 16 is closed, hot water is fed to a return tube 9, and air purging is conducted. The valve 15 is closed, the valve 16 is opened, and water is supplied from a forward tube 8 into a bathtub 4. Water pressure is sampled in the tube 9. If the water level reaches a set level, the valve 6 is closed. |
