Basic Hot Water Heating Systems Flashcards
1
Q
What is a device that transfers heat from one system to another?
A
a heat exchanger
2
Q
What is the maximum capacity of a class 2 transformer?
A
100VA
3
Q
What is the purpose of a reverse acting aquastat?
A
prevent cold water from circulating in a heating system
4
Q
What is the typical voltage for zone valves?
A
24V
5
Q
What is the purpose of a flame rod?
A
to detect a burner flame
6
Q
What is a LWCO used for?
A
shutoff burner if boiler water is too low
7
Q
What are the two types of aquastats?
A
immersion, surface mount
