Compared to the over-fire draft, the stack draft should be: A) ...

[gonzo233]

Compared to the over-fire draft, the stack draft should be:
 
  A) More negative than the over-fire draft. B) About the same as the over-fire draft.
  C) A positive pressure. D) Less negative than the over-fire draft.

Question 2

Why is minimizing duct restriction so important?
 
  A) The system cannot operate properly against excessive air restriction.
  B) Incorrect terminal velocities can cause discomfort.
  C) Excessive restriction can increase operating cost.
  D) Excessive restriction causes excessive noise.

[chem1s3]

Answer to Question 1

A

Answer to Question 2

A

[gonzo233]

Thanks for the timely response, appreciate it

[gcook]

YES! Correct, THANKS for helping me on my review