What is the function of the wiring diagram?
What will be an ideal response?
Question 2
Why should an air vent never be put on a closed-type expansion tank?
A) The expansion tank is usually not located in a serviceable location.
B) A closed expansion tank requires an air head to work properly.
C) The large amount of air in the expansion tank would overload the air vent.
D) Closed-type expansion tanks are normally installed at a low point in the system.
