Basic Hot Water Heating Systems

Question 1

What is a device that transfers heat from one system to another?

Answer 1

a heat exchanger

Question 2

What is the maximum capacity of a class 2 transformer?

Answer 2

100VA

Question 3

What is the purpose of a reverse acting aquastat?

Answer 3

prevent cold water from circulating in a heating system

Question 4

What is the typical voltage for zone valves?

Answer 4

24V

Question 5

What is the purpose of a flame rod?

Answer 5

to detect a burner flame

Question 6

What is a LWCO used for?

Answer 6

shutoff burner if boiler water is too low

Question 7

What are the two types of aquastats?

Answer 7

immersion, surface mount