NATE GAS HEATING EXAM DETAILED
PREPARATION PACK 2026
◉ Modern high-efficiency burners use combustion blowers. What
are the two major types of combustion blowers?
A: Induced draft and forced draft
B: High pressure and low pressure
C: Impeller type and centrifugal type
D: Liquid and vapor types. Answer: A: Induced draft and forced
draft
◉ The purpose of the combustion blower is to:
A: Cause an adequate amount of oxygen-rich air to mix with the fuel
for better combustion
B: Push the products of combustion out of the building
, C: Prevent carbon monoxide from entering the heat exchanger
D: Give the larger blower motor a rest. Answer: A: Cause an
adequate amount of oxygen-rich air to mix with the fuel for better
combustion
◉ Heat transfers from an object or area at a higher temperature to
an object or area at a lower temperature. A heated heat exchanger
transfers heat to the air by:
A: Conduction
B: Natural convection
C: Radiation
D: Forced convection. Answer: D: Forced convection
◉ The voltage that creates a spark on a spark ignition system is
approximately:
A: 240 volts
PREPARATION PACK 2026
◉ Modern high-efficiency burners use combustion blowers. What
are the two major types of combustion blowers?
A: Induced draft and forced draft
B: High pressure and low pressure
C: Impeller type and centrifugal type
D: Liquid and vapor types. Answer: A: Induced draft and forced
draft
◉ The purpose of the combustion blower is to:
A: Cause an adequate amount of oxygen-rich air to mix with the fuel
for better combustion
B: Push the products of combustion out of the building
, C: Prevent carbon monoxide from entering the heat exchanger
D: Give the larger blower motor a rest. Answer: A: Cause an
adequate amount of oxygen-rich air to mix with the fuel for better
combustion
◉ Heat transfers from an object or area at a higher temperature to
an object or area at a lower temperature. A heated heat exchanger
transfers heat to the air by:
A: Conduction
B: Natural convection
C: Radiation
D: Forced convection. Answer: D: Forced convection
◉ The voltage that creates a spark on a spark ignition system is
approximately:
A: 240 volts
