| 摘要 |
<p>PURPOSE:To easily prepare a hot water pouring control graph which is excellent in control performance of automatic hot water filling. CONSTITUTION:During operation in memory mode, the quantity of hot water in bath tub is detected with a water level detector 38 based on a detection signal transmitted from a flow sensor 10. The water level in the bath tub is detected with a water level detector 37 based on a hydraulic pressure signal of a pressure sensor 26. A hot water pouring control graph preparation section 40 stores a first reference point of a water level which exceeds a return port of a reheating circulation pipeline and a higher level second reference point and a third reference point which is higher than the second reference point but lower than a setting water level on coordinates where water quantities are plotted on the horizontal axis and water levels are plotted on the vertical axis. If the slope of a straight lone which connects the second reference point to the third reference point is turned out to be not unnatural when a specified condition is considered based on the slope of a straight line which connects the first reference point to the second reference point, an injection hot water control graph is prepared with a polygonal line which connects the first reference point and the second reference point and the third reference point. In other cases, the hot water pouring control graph is prepared with the straight line which connects the first reference point to the second reference point.</p> |
