The Furnace Components

The hot air furnace heats what?

• water

• air

• your home

• your business

Within the furnace are burner safeties. Are these primary or secondary voltage?

• Primary

• Secondary

The roll-out safety

• monitors heat near the burners

• monitors heat at the blower housing

• monitors heat build-up within the heat exchanger

What component is used to light the gas as it enters the burner?

• Flame Sensor

• Hot Surface Igniter

• Gas Valve

• Door Switch

What components are secondary voltage?

• Thermostat

• negative pressure switch

• inducer motor

• transformer

What component prevents the furnace from operating without the furnace panels installed?

• Pressure Switch

• Contact Switch

• Door Switch

• Panel Lock

Which components are Primary Voltage?

• Blower motor

• Hot Surface Igniter

• Inducer Motor

• Door Switch

Which voltage is the Primary?

• 120 volts

• 24 volts

Which component monitors the air temperature near the heat exchanger?

• Roll-out safety

• High Limit Switch

• Negative Pressure Switch

• Flame Sensor

After the inducer motor starts, what needs to close for the sequence to continue?

• Roll-out safety

• Door Switch

• High Limit

• Negative Pressure Switch