| 摘要 |
PROBLEM TO BE SOLVED: To obtain a hot water heating system comprising a plurality of heat source units arranged in parallel between a supply pipe and a return pipe for circulating hot water in which the system can be operated even upon failure of a remote controller, or the like, by providing a system controller for controlling operation/stoppage of each heat source unit with means for operating the system. SOLUTION: A plurality of branch pipes 6 are provided between a supply pipe 4 and a return pipe 5 coupled with the piping 3 of a floor heating panel 2 and each branch pipe 6 is provided with heat source units 7a, 7b incorporating a body controller 14. In such a hot water heating system, a system controller 42 for central control is arranged with a system controller electric part board 43 for altering the operating number of the heat source units 7a, 7b, altering the control mode and controlling operation/stoppage of a circulation pump 11. An operation switch 44 for turning the power supply of the hot water heating system 41 on/off is also arranged on the board 43. The hot water heating system 41 can thereby be operated temporarily even upon failure of a remote controller 21 by operating the operation switch 44.
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