| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot water supply system including water heaters connected together, which starts hot water supply operation from a stage in which quantity of use of water in a shut-off valve is little, even when circulation pumps of a plurality of water heaters are operated simultaneously. <P>SOLUTION: There is provided the hot water supply system in which the plurality of water heaters 1 are connected to water supply piping 20, hot water supply piping 21 and supplied hot water return piping 23, a main water heater starting hot water operation first is set out of the water heaters 1, each water heater 1 includes a flow rate control valve 7 controlling water supply to a heating part 4, and a circulation pump 13 circulating hot water and cold water in the supplied hot water return piping 23 to the heating part 4, and circulation operation in which the circulation pump 13 is operated by opening the flow rate control valve 7 for each water heater can be performed. In the hot water supply system, when circulation operation is performed simultaneously by water heaters of two or more, flow rate control of each water heater is performed so that much water is supplied to the main water heater. <P>COPYRIGHT: (C)2012,JPO&INPIT |
