| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bathtub circulation device capable of operating normally even when a pipe connecting a bathtub circulation adapter to a water heater is connected in a wrong way during construction. <P>SOLUTION: The bathtub circulation device is configured to control change in flowing directions between a first pipe 11a and a second pipe 11b by driving and controlling valve bodies of three-way valves 12a, 12b by a storage and control part 19 on the basis of the current value of a motor of a circulation pump 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
