| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water heater, improved in energy efficiency by restraining shortage of storing quantity of hot water and preventing hot water from being left in a hot water storing tank for a long time. <P>SOLUTION: This water heater is provided with an operation control means 7 for controlling the operation of a hot water storing means H to store hot water in the hot water storing tank 4 to be used for supplying hot water to a bathtub 32. The operation control means 7 leads out the hot water supply estimated time on the basis of the hot water supply actual result time to the bathtub 32, and controls the operation of the hot water storing means H to complete storing hot water in the hot water storing tank 4 before the preset float time of the hot water estimated time, and compares the actual time of hot water supply performed according to the hot water supply command with the hot water supply estimated time to alter the preset float on the basis of the comparison result. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
