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Author Question: Soot accumulation on the heat exchanger is A) Not possible with a gas furnace B) Caused by ... (Read 86 times)

sjones

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on: Jul 26, 2018
Soot accumulation on the heat exchanger is
 
  A) Not possible with a gas furnace
  B) Caused by incomplete combustion
  C) Normal over a period of years
  D) A natural protective layer for the inside of the heat exchanger

Question 2

Nonferrous metals include:
 
  A) Copper B) Aluminum C) Titanium D) All of the above


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emsimon14

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Reply #1 on: Jul 26, 2018
Answer to Question 1

B

Answer to Question 2

D


sjones

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Reply #2 on: Jul 26, 2018
TY


emsimon14

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Reply #3 on: Jul 26, 2018
You're welcome


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