| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot water supply system preventing delivery of dangerous high-temperature hot water even if a hot water connecting unit cannot control the burning, etc., of a burner of a water heater. <P>SOLUTION: In this hot water supply system, a solar water heater 10 and the water heater 30 are connected via the hot water supply connecting unit 20. A main channel comprising a hot water pipe 23 connecting the hot water connecting unit 20 to the water heater 30 and a hot water pipe 31 connected to the water heater is formed with a bypass channel by connecting a bypass pipe 32 for bypassing the water heater 30. An electric three-way valve 33 automatically changing over the channel according to the control operation of the hot water connecting unit 20 is installed in a junction of the bypass channel in the main channel. <P>COPYRIGHT: (C)2003,JPO</p> |
