| 摘要 |
PURPOSE:To control combustion without malfunction due to a noise by a method wherein power supply of a timer circuit is controlled by the output from a main body controller which starts a combustion operation by receiving a pulse signal. CONSTITUTION:A remote controller A is located far from a water boiler B. For example, when an operation switch 1 is closed during combustion stopping, the pulse signal is sent and the last transition of a pulse input is detected by the main body controller 6, and the driving signal of a load at an electromagnetic valve or the like is outputted to start the combustion. In case combustion flame is detected, the low value signal is outputted from an output terminal 6c and a combustion lamp 4 is lighted. Thereafter, the power source is supplied to the timer circuit 2 and it begins the operation. When the time set by a volume 5 for timer time setting has passed, the high value signal is outputted from an output terminal 2b, then, the last transition is detected by the main body controller 6 and the combustion operation is stopped. Thereafter, the high value signal is outputted from the output terminal 6 and the power supply for the timer circuit is intercepted, and the output terminal 2b thereof comes to the low value condition. |
