| 摘要 |
PURPOSE:To prevent scale from adhering to and being deposited in a heating coil in a hot water supplier body. CONSTITUTION:Hot water from a mixing valve 22 is sent through an output passage 24, and a branch main passage 26 and a branch sub passage 32 are derived from the end of the output passage 24 without passing through a check valve, and the one branch main passage 26 is directly led to a first circulation port 30 and the other branch sub passage 32 is led to a second circulation port 34 of a bathtub 28 passing through a heating coil 44 in a hot water supplier body 12. Further, check valves 38, 42 and a solenoid opening/closing valve 40 are provided in series on the output passage 24. |
