| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water supply device capable of successfully suppressing temperature rise on the water side of a hot water mixing valve without increasing the length of piping and of suppressing overshoot of a hot water delivery temperature.SOLUTION: The hot water supply device includes: a water supply pipe line 3 making water flow in to a hot water storage tank 2; a hot water supply pipe line 4 making hot water flow out from the hot water storage tank 2; and the hot water mixing valve 5 which is provided within the hot water supply pipe line 4 and to which a bypass pipe line 6 branched from the water supply pipe line 3 is connected. In the bypass pipe line 6, a metallic portion 15 having 10 mm or more of thickness is provided at least in a range of 20 mm extended from a connecting portion with the hot water mixing valve 5 to the upstream side. |
