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Author Question: What is a redundant gas valve? A) a gas valve that has no real purpose B) a gas valve that was ... (Read 68 times)

berenicecastro

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on: Jul 26, 2018
What is a redundant gas valve?
 
  A) a gas valve that has no real purpose
  B) a gas valve that was once necessary on older furnaces but is no longer used
  C) a gas valve that is used in case the main valve quits working
  D) a gas valve with two valves mechanically in series

Question 2

What could cause the tungsten electrode to turn gray or blue?
 
  A) The operator had only 1/4 to 1 inch stick out, and that is not enough to prevent electrode burning.
  B) Not enough electrodes stick out.
  C) Answers A and B are both correct.
  D) Not enough post flow
  E) Too much post flow


aprice35067

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

D

Answer to Question 2

D


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berenicecastro

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Reply #2 on: Jul 26, 2018
Thank you!


aprice35067

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Reply #3 on: Jul 26, 2018
Always glad to help...


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