| 摘要 |
PURPOSE:To perform operation having a function to make water less hot simultaneously with bubble operation and to satisfy regulation by a supply water rule by shutting off a hot-water supply circuit and a hot water circulating circuit during operation to make water less hot, namely shutting off the hot-water supply circuit and a hot water circulating circuit during bubble operation. CONSTITUTION:A hot water circulating device with a filtering function is provided with a circulating circuit 2 to circulate hot water in a bath tub 1 and a filtering tank 22 having a filtering function. The hot water circulating device comprises a filtering circuit 23 connected to the circulating circuit 2, a drain circuit 24 for backwash branched from the filtering circuit 23 located on the upper stream side of the filtering tank 22, a backwash circuit 30 connected to the filtering circuit 23 on the downstream side of the filtering tank 22, and line switching means 25 and 26 to switch a line to the backwash circuit 30 side and the circulating circuit 2 side. |
