Hot water supply system, hot water supply device and control method for hot water supply system

摘要

Problem to be solved: to obtain a hot water supply system capable of increasing the temperature of the bath water to a desired temperature until the person is immersed in a bathtub.A hot water supply system 100 according to one aspect of the present disclosureBathtub 2 storing bath waterA bath heat exchanger 15 for increasing the temperature of bath waterBathtub return temperature sensor 1 for detecting the temperature of bath waterThe dressing room person detecting means 81 for detecting the presence of a person in the dressing room 300 andA control Part 43 for controlling the heat exchanger 15 for bath andEquipped withWhen the temperature of the bath water obtained from the bathtub return temperature sensor 18 is lower than a predetermined first threshold temperature, the control section 43 increases the temperature of the bath water by the bath heat exchanger 15 when it acquires the information to be judged that the person is staying in the dressing room 300 from the dressing room person detecting means 81 させ、When the information to be judged that the person is not present in the dressing room 300 is obtained from the dressing room person detecting means 81, the temperature of the bath water is not raised by the heat exchanger 15 for the bath.Diagram