Furnace Ignition Systems

What is the primary function of a furnace ignition system?

• To heat the furnace

• To ignite the fuel-air mixture

• To cool the furnace

• To regulate the temperature

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

• Thermocouple

• Ignition electrode

• Gas valve

• Flame sensor

In a furnace ignition system, what role does the flame sensor play?

• Detects the presence of a flame

• Regulates gas flow

• Ignites the fuel

• Monitors temperature

What type of energy conversion occurs in a furnace ignition system?

• Chemical to thermal

• Electrical to thermal

• Mechanical to electrical

• Thermal to chemical

Tags

NGSS.MS-PS3-4

Which of the following is a common type of furnace ignition system?

• Hot surface ignition

• Cold surface ignition

• Thermal ignition

• Mechanical ignition

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What safety feature is commonly included in furnace ignition systems to prevent gas leaks?

• Pressure sensor

• Flame sensor

• Gas valve

• Thermocouple

How does a hot surface ignition system ignite the fuel?

• By creating a spark

• By heating a surface to ignite the gas

• By using a pilot light

• By compressing the gas

What is the purpose of a thermocouple in a furnace ignition system?

• To measure temperature

• To detect flame presence

• To ignite the fuel

• To control airflow

Which gas is commonly used in residential furnace ignition systems?

• Oxygen

• Nitrogen

• Propane

• Helium

Tags

NGSS.MS-PS3-4

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

• The furnace will overheat

• The gas supply will be cut off

• The furnace will continue to run

• The ignition system will shut down