| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning system that prevents freezing of water in a hot water circulation passage in a heating terminal from occurring before treatment for freezing prevention is started by a heat source machine.SOLUTION: A bathroom heating device 2 includes: a bathroom temperature sensor 42 for detecting a temperature in a bathroom BR; a bathroom suction port 17 communicated with a ventilation device 3; a bathroom damper 27 for opening/closing the bathroom suction port 17; and a heating controller 40 that performs heating operation with hot water supplied from a heat source machine 8 as a heat source and ventilation operation for operating the ventilation device 3, and when the detection temperature of the bathroom temperature sensor 42 is equal to or less than a first freezing determination temperature, closes the bathroom suction port 17 by the bathroom damper 27. |
