The programmed control system of an automatic auxiliary boiler will terminate the light off process during the pre-purge period if air flow is not sensed and __________.
A
the damper is not sufficiently open
B
the damper is not fully closed
C
oil pressure is not sensed
D
water pressure is not sensed
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Question 1 / 205eccefa3bacbc34ba4d47c57
Question 1 of 205eccefa3bacbc34ba4d47c57
The programmed control system of an automatic auxiliary boiler will terminate the light off process during the pre-purge period if air flow is not sensed and __________.
The programmed control system of an automatic auxiliary boiler will terminate the light off process during the pre-purge period if air flow is not sensed and __________.