Author Question: Medium and large commercial buildings typically use: A) Low-pressure hot-water boilers. B) ... (Read 144 times)

fagboi · **on:** Jul 24, 2018

Medium and large commercial buildings typically use:

A) Low-pressure hot-water boilers. B) Medium- or high-pressure steam boilers.
C) Medium- or high-pressure hot-water boilers. D) Low-pressure steam boilers.

Question 2

When adding a specific amount of refrigerant to a new system, how do you measure the amount of refrigerant added?

A) Use a digital scale to register charge as the refrigerant exits the cylinder.
B) Use a digital scale to register charge as you add refrigerant to the cylinder.
C) Use a digital scale to remove refrigerant until a negative number registers.
D) Use a digital scale to weigh the refrigerant cylinder.