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Author Question: What is the purpose of the zinc rod used in steel boilers? A) It prevents corrosion by reacting ... (Read 136 times)

jeatrice

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What is the purpose of the zinc rod used in steel boilers?
 
  A) It prevents corrosion by reacting with corrosive elements before they attack the boiler.
  B) It acts as a flame safety device.
  C) It cycles the burner by sensing the water temperature.
  D) It acts as an electrical ground for safety purposes.

Question 2

After leaving the unit, condensate drain lines should be run:
 
  A) With a maximum rise of 1/8 inch per foot.
  B) With a minimum fall of at least 1/8 inch per foot.
  C) To the nearest plumbing waste vent.
  D) Level for a neat appearance.



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nital

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Answer to Question 1

A

Answer to Question 2

B




jeatrice

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Reply 2 on: Jul 24, 2018
Gracias!


pratush dev

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Reply 3 on: Yesterday
Excellent

 

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