Furnace Ignition Systems

What is the primary function of a furnace ignition system?

• To heat the furnace to the desired temperature

• To ignite the fuel-air mixture

• To regulate the airflow

• To monitor the temperature

Which component in a furnace ignition system is responsible for creating the initial spark?

• Thermocouple

• Ignition electrode

• Flame sensor

• Gas valve

In a modern furnace, what type of ignition system is commonly used to improve efficiency and safety?

• Standing pilot light

• Intermittent pilot

• Hot surface ignition

• Matchstick ignition

Tags

NGSS.MS-PS3-3

What is the role of a flame sensor in a furnace ignition system?

• To ignite the fuel

• To detect the presence of a flame

• To control the gas flow

• To adjust the temperature

Which of the following is a common safety feature in furnace ignition systems?

• Automatic shut-off

• Manual reset

• Overheat alarm

• Pressure gauge

How does a hot surface ignition system work in a furnace?

• It uses a pilot light to ignite the main burner

• It uses a heated element to ignite the gas directly

• It relies on a spark to ignite the gas

• It uses a match to ignite the gas

Tags

NGSS.HS-PS3-3

What is the advantage of using an intermittent pilot ignition system over a standing pilot?

• Lower energy consumption

• Higher flame temperature

• Faster ignition time

• Simpler design

In a furnace ignition system, what is the purpose of the gas valve?

• To ignite the gas

• To control the flow of gas to the burner

• To detect the flame

• To regulate the temperature

Which of the following materials is commonly used for the hot surface igniter in a furnace?

• Copper

• Silicon carbide

• Aluminum

• Iron

Tags

NGSS.MS-PS3-3

What happens if the flame sensor in a furnace ignition system fails to detect a flame?

• The furnace continues to operate normally

• The gas valve remains open

• The ignition system shuts down

• The temperature increases

Tags

NGSS.MS-PS3-3