At the beginning of the pre-purge period on an automatic auxiliary boiler equipped with a programmed control system, the unit will not restart if airflow is not sensed and __________.
A
the damper is not sufficiently opened
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 / 205eccefa3bacbc34ba4d47c59
Question 1 of 205eccefa3bacbc34ba4d47c59
At the beginning of the pre-purge period on an automatic auxiliary boiler equipped with a programmed control system, the unit will not restart if airflow is not sensed and __________.
At the beginning of the pre-purge period on an automatic auxiliary boiler equipped with a programmed control system, the unit will not restart if airflow is not sensed and __________.