Author Question: How is a temperature-pressure relief valve on a hot-water boiler tested? A) Jump the high limit ... (Read 93 times)

pragya sharda · **on:** Jul 24, 2018

How is a temperature-pressure relief valve on a hot-water boiler tested?

A) Jump the high limit and operate the burners until the pressure relief valve opens.
B) Pull the lever and look for water at outlet of discharge pipe.
C) Pressurize the boiler with nitrogen until the pressure relief valve opens.
D) Pressure relief valves are optional, so testing is not required.

Question 2

What color should the flames be in a correctly adjusted gas burner?

A) Bright white inner cone with dark purple outer cone
B) Dark orange inner flames with yellow tips
C) Light blue in the inner cone with a dark blue outer cone
D) Bright blue inner cone with yellow tips