| 摘要 |
PROBLEM TO BE SOLVED: To provide a functional unit for bathroom installation being improved in points such as a production cost by simplifying and rationalizing a structure for discharging a backflow generated in a water passage to the outside of a case.SOLUTION: A functional unit U for bathroom installation has such a configuration that a water passage 2 using a fluid machine is built in a case 1. The fluid machine includes a relief valve 5 for releasing, outside the water passage, a backflow generated in the water passage 2 when an upstream side of the water passage 2 becomes a negative pressure more than a downstream side. The relief valve 5 is connected, with a pipe, to a backflow discharge port 18 provided in the case 1 so as to discharge the backflow from the discharge port to the outside of the case 1. The backflow discharge port 18 is provided on an erected wall part 10a of the case. |
