Before starting an oil furnace, the technician should check to see that:
A) The flame-observation door and all clean-outs are closed.
B) The clean-out doors are open to allow unwanted debris to be blown out during ignition.
C) The flame-observation door is open for viewing.
D) The flame-observation door and all clean-outs are open.
A
You might also like to view...
Which of the following is NOT true of carbon monoxide?
A. combustible B. odorless C. poisonous D. not classified as a noxious emission
Closed transition starting does not disconnect the motor from the power line.
Answer the following statement true (T) or false (F)
Most ac generators have ____________________ field windings.
Fill in the blank(s) with the appropriate word(s).
The lathe is used to cut materials by turning cylindrically shaped objects.
Answer the following statement true (T) or false (F)