HOT WATER HEATING SYSTEM

PROBLEM TO BE SOLVED: To provide a hot water heating system capable of making a calling-out announcement and a call between rooms without separately laying an exclusive communication line. SOLUTION: This hot water heating system has four fan convectors 30 arranged in living rooms R1 to R4, a hot water heating heat source machine 10 for circulating and supplying hot water to these fan convectors 30, an operation remote controller 20 for operating the hot water heating heat source machine 10, and serial interfaces 51 and 52 for connecting the fan convectors 30, the hot water heating heat source machine 10, and the operation remote controller 20 to be bidirectionally communicatable. An operation panel 31 of the fan convectors 30 is provided with a calling-out operation switch for transmitting a calling-out signal to the other fan convector 30, and an address setting switch for setting a calling-out address of the respective fan convectors 30. A controller 30a of the respective convectors 30 has a storage part for storing the preset calling-out address, and a calling-out buzzer buzzing by receiving the calling-out signal. COPYRIGHT: (C)2005,JPO&NCIPI