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Author Question: What is the purpose of excess combustion air? A) Excess air improves the over-fire draft. B) ... (Read 98 times)

Destiiny22

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on: Jul 24, 2018
What is the purpose of excess combustion air?
 
  A) Excess air improves the over-fire draft.
  B) Excess air is added to increase the combustion temperature.
  C) Excess air is added to improve combustion efficiency.
  D) Excess air is added to ensure complete combustion.

Question 2

Which class of manufactured duct has the lowest flame spread and smoke developed ratings?
 
  A) Ductwork does not burn. B) Class 0
  C) Class 1 D) Class 2


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ciecieme

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Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

B


Destiiny22

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Reply 2 on: Jul 24, 2018
Excellent

yeungji

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Reply 3 on: Yesterday
Gracias!

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