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WorksheetsThe Furnace Components
Total questions: 20
Worksheet time: 15mins
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
What is the purpose of the inducer motor?
Which component(s) are both primary and secondary voltage?
Door Switch
Integrated Furnace Control (IFC)
Inducer Motor
Transformer
What component is this?
Roll-out safety
Blower Housing Limit
High Limit
None of the above
Which component is this?
Hot Surface Igniter
Flame Sensor
High Limit
Roll-out safety
How do we measure Flame Signal?
Microamps
DC voltage
Amps
Ohms
What component is this?
Hot Surface Igniter
High Limit
Flame Sensor
Which motor produces a draft through the heat exchanger?
Inducer motor
Blower motor
This image is showing where the ___________ air is drawn in for combustion.
primary
secondary
Which component is responsible for dropping the voltage inside the furnace from primary to secondary?
(a)
Which component acts as the central hub or brain for the furnace?
(a)
