| 摘要 |
PURPOSE:To supply hot-water smoothly at all times during service by displaying an abnormality of the room and device body before the water is supplied in order to avoid the operation of the hot-water unit when it is unsuitable to operate the combustor of the storage type hot-water unit in which fuel oil is used. CONSTITUTION:The earthquake-proof automatic fire extinguisher 354, oil sensor 355 and overheat preventing device 353 with an automatically cut fuse are provided to the power circuit that has the hot-water thermostat 367 of the combustor control device of the storage type hot-water unit. When one abnormal output at least such as a recycle output, combustor overheat detection output and abnormal flame detection output is detected by the said elements, corrosion- and water-proof detector I through the relay contact 356 and decade counter of the timing signal output circuit that is not shown in Figure, the neon lamp 360 is put out to display an abnormality of the device proper. At the same time, the light emission diode of the timing signal output circuit is lighted by eliminating the magnetism of the relay 36 to inform the fact that the hot-water unit can not be used. Accordingly hot-water can smoothly be suplied at all times during service. |
