| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a storage type water heater utilizing medium temperature water with priority, reducing outflow of germs in power failure recovery, and improving safety and COP. <P>SOLUTION: When a boiling-up level is set to be lower than a prescribed range by a boiling-up level setting means 138, a first mixing valve 120 is kept in a hot water-side full open state, mixing control thereafter is inhibited, and a control inhibiting state of the first mixing valve 120 is released to recover a normal operation, when the completion of a full volume boiling-up operation is confirmed. <P>COPYRIGHT: (C)2007,JPO&INPIT |
