Gas Furnace - Electrical Circuits

What is primary voltage?

• voltage used for low voltage devices

• voltage used for high voltage devices

• all voltage found within the furnace

• None of the Above

Another term used for primary voltage is line voltage.

• True

• False

Give an example of a primary or line voltage component within the furnace.

What is secondary voltage?

• voltage used for low voltage devices

• voltage used for high voltage devices

• all voltage found within the furnace

• None of the Above

Another term used for secondary voltage is low voltage.

• True

• False

What component within the furnace creates this secondary voltage?

Name a component in the furnace that is low voltage.

Which component is NOT primary voltage?

• Inducer Motor

• Blower Motor

• Hot Surface Ignitor

• Negative Pressure Switch

Check all components that are secondary voltage.

• roll-out switch

• Negative Pressure Switch

• Door Switch

• High Limit Switch

Which components are both Primary and Secondary voltages?

• Blower Motor

• Integrated Furnace Control (IFC)

• Tranformer

• Door Switch