Author Question: How is a hot water boiler pressure relief valve tested? A) By jumping the aquastat and limit, ... (Read 62 times)

jjjetplane · **on:** Jul 26, 2018

How is a hot water boiler pressure relief valve tested?

A) By jumping the aquastat and limit, forcing the boiler to operate until the pressure relief valve opens
B) By checking the continuity of its operating coil
C) By lifting the lever located on top of the relief valve
D) By slowly adding nitrogen pressure until the relief valve opens

Question 2

Explain where you would typically find the evaporator and condenser on a refrigeration display case.

What will be an ideal response?

stallen · **Reply #1 on:** Jul 26, 2018

Answer to Question 1

C

Answer to Question 2

The evaporator on a refrigeration display case built into the case so as to provide the most area of cooling. The condenser may be mounted directly below the case if it is water cooled and it may be mounted outside near the location of the display case, to ensure the amount of interconnecting refrigeration tubing is as short as possible.