Author Question: What is the purpose of the zinc rod used in steel boilers? A) It prevents corrosion by reacting ... (Read 137 times)

jeatrice · **on:** Jul 24, 2018

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.