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Author Question: When can a one-pipe oil delivery system be used successfully? A) When using a low firing rate ... (Read 136 times)

CharlieWard

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on: Jul 27, 2018
When can a one-pipe oil delivery system be used successfully?
 
  A) When using a low firing rate burner
  B) When the burner is at or below the level of the oil tank
  C) Only when the oil burner has single firing rate
  D) When the burner is above the tank and must lift the oil

Question 2

The oil safety valve will not open until
 
  A) The draft switch closes
  B) The oil pump produces a pressure in the supply line
  C) The oil pump produces a vacuum in the supply line
  D) It is energized by the primary burner control


yuyiding

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


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