NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam

After a successful NFPA 85 prepurge, a single-burner boiler shall normally be lighted in which manner?

At high fire with the fuel valves held open manually, bypassing the flame scanner. At the prescribed light-off (low-fire) position with proven igniter and flame supervision; loss of flame or of a required interlock causes a master fuel trip. By introducing raw gas into a hot furnace with no igniter (hot-furnace light-off). By disabling the low-water cutoff until steam pressure appears.

Correct Answer:

At the prescribed light-off (low-fire) position with proven igniter and flame supervision; loss of flame or of a required interlock causes a master fuel trip.

Access more questions from this quiz

Continue to NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam for more practice questions and the full quiz experience.

Access More Questions