Heating I Boiler Session 3

Front 1

List 6 operating controls on a hydronic system

Back 1

Pressure reducing valve

backflow preventer

aquastat (hi-low temp limit)

low water cutoff

low temperature switch

flow control

Front 2

What is the function of the pressure reducing valve

Back 2

Drop water pressure to required level

Front 3

Is it possible for a boiler to function without a pressure-reducing valve

Back 3

Yes

Front 4

What is the purpose of an automatic air vent on a boiler and are they mandatory

Back 4

Remove air from the system

not mandatory

Front 5

What is the purpose of zone control and larger houses

Back 5

To control heat to different areas of the house

Front 6

List three ways that the system can control a circulator pump

Back 6

Controlled by the water temperature

controlled by the burner control

controlled by the thermostat

or running continuously

Front 7

What are Flow Control Valves?

Back 7

Valves that stop the flow of water when the pump shuts down, typically with a Zone Control system.