Author Question: What is used to top off the water supply for the system? A) The low-water cutout B) The supply ... (Read 121 times)

skymedlock · **on:** Jul 24, 2018

What is used to top off the water supply for the system?

A) The low-water cutout B) The supply pump
C) A pressure-regulating valve D) The return water line

Question 2

How can a hot water boiler heat water to 250F and not boil the water?

A) Water treatment is added whose primary purpose is to raise the boiling point of the water.
B) Hot water boilers cannot maintain 250F water without boiling the water.
C) The system is under enough pressure to raise the boiling point above the water temperature in the boiler.
D) The water does boil, but the steam is vented to the air.