| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology which suppresses noise which can be generated during a trial operation.SOLUTION: In a hot water supply system, a hot water storage tank stores water which is supplied from a water supply source. A first water supply path extends from the hot water storage tank. A second water supply path extends from the water supply source. A communication path communicates from a merging point between the first water supply path and the second water supply path to a utilization device which utilizes water. A mixer adjusts a flow passage area of the first water supply path and a flow passage area of the second water supply path. A check valve is arranged in the communication path and allows water to flow from the hot water storage tank to the utilization device in the communication path, and also it prohibits water flowing toward the hot water storage tank from the utilization device. The mixer, during a trial operation, communicates with the communication path by opening the first water supply path, and also communicates with the communication path by opening the second water supply path.SELECTED DRAWING: Figure 2 |
