| 摘要 |
<p>Burner control apparatus includes control devices for actuating an ignition control means, and a timing circuit for providing an igniton timing sequence of four precise intervals. The timing circuit is actuated in response to a request for burner operation and the control devices are energized in sequence and combination in response to the actuated timing circuit. Time sequential pilot flame and main flame stabilization intervals are provided. If a signal from the flame sensor is received before the end of the overlapping flame stabilization timing intervals, the control device is energized and if flame detection signal is lost a lockout circuit is energized.</p> |
