Mixing valves used to control the final temperature of radiant ...

[jazziefee]

Mixing valves used to control the final temperature of radiant loops
 
  A) by mixing the hot boiler water with cooler return water
  B) by bleeding off some of the hot water before it enters the loop
  C) by mixing the hot water from the boiler with the cold water from the chiller
  D) by mixing the hot boiler water with fresh makeup water

Question 2

What is the purpose of the expansion tank?
 
  A) To allow room for extra water
  B) To allow for water volume changes due to temperature change
  C) To reduce the water temperature by expansion
  D) To provide pressure for the water system

[lkanara2]

Answer to Question 1

A

Answer to Question 2

B

[jazziefee]

TYSM

[bdobbins]

Excellent