| 摘要 |
PROBLEM TO BE SOLVED: To facilitate operation of lowering a temperature of inflow water by informing an operator of combustion condition when combustion control is not started by inflow water high-cut function and to surely complete a trial operation mode for a short time.SOLUTION: A hot water supply system includes a circulation circuit having a plurality of water heaters 1 and a control means 2 for controlling the operation of the plurality of water heaters 1. The control means 2 is configured to change an operation mode to a normal operation mode for normal operation control of the plurality of water heaters 1 and to a trial operation mode wherein each of water heaters 1 is sequentially controlled for trial operation to check the combustion during controlling of combustion in each of water heaters 1, and the water heater 1 has inflow water high-cut function wherein the combustion control is not conducted when a temperature of inflow water is high. The control means 2 determines on the basis of information supplied from the water heater 1 that the water heater 1 under trial-operation controlling for combustion checking is not controlled for combustion by the inflow water high-cut function, and it informs an operator of the status. |
