Core knowledge reference manual terms
Exam Questions and Answers Graded A+
Air Infiltration - Correct answer-Typically, the passing of air into the house through
small cracks or gaps inherent to the structure. Affected by temperature difference
between the inside and outside of the structure, and pressure factors (E. G., Wind,
The operation of solid fuel appliances or electrical appliances such as fans).
air inlet - Correct answer-The designed ports of entry for combustion air in a
controlled combustion, solid fuel burning appliance.
Air inlet control - Correct answer-The means by which the amount of air entering
the air inlet is regulated. Also referred to as air control.
air supply - Correct answer-Broadly, the air that is supplied to the firebox of the
wood-burning appliance.
Air to fuel ratio - Correct answer-The ratio of air in fuel, by weight, and a solid
fuel appliance. It should be noted that 1 pound of dry air occupies a volume of
13.31 5 ft.³ at 70°F. Therefore, 35 pounds of air, the typical amount of air necessary
to burn 1 pound of wood in the fireplace, occupies 466 ft.³.
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,Aldehydes - Correct answer-Class of compounds with distinct pungent odor,
produce steering in complete combustion of a fuel gas.
ANSI (American National Standards Institute) - Correct answer-American national
standards institute. The coordinating organization for Federated national standard
system, consisting of 900 companies in 200 trade, technical, professional, labor,
and consumer organizations.
appliance - Correct answer-A solid fuel burning product.
Appliance regulator - Correct answer-The appliance component, usually part of the
combustion valve that maintains constant gas pressure.
Appliance to fuel - Correct answer-Means of venting a solid fuel appliance
(including fireplace inserts) into Masonary fireplace chimneys; The stainless steel
connector passes from the appliance to the first clay fuel liner. Also referred to as
direct connection.
approved - Correct answer-Acceptable to the authority having jurisdiction.
Ash - Correct answer-Non-combustible solid byproduct of solid fuel combustion.
Authority Having Jurisdiction - Correct answer-The organization, office, or
individual responsible for "approving" equipment, installation, or procedure.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, Automatic gas control valve - Correct answer-(Also combustion valve). Gas valve
which combines control functions; usually consist of gas manual valve assembly;
pilot safety shut off system, diaphragm valve, gas pressure regulator, and valve
operator.
baffle - Correct answer-An obstructing device or partition in a solid fuel appliance,
used to direct the flow of gases and heat.
blower door - Correct answer-A diagnostic tool used to measure the tightness of
buildings. Consists of a calibrated fan for measuring airflow rate and a pressure
sensing device to determine house pressure levels.
breaching - Correct answer-Refers to the chimney connector access hole in a
Masonary chimney. See chimney breaching.
BTU or British Thermal Unit - Correct answer-A measure of heat energy; the
amount of heat required to raise the temperature of 1 pound of water 1°F at sea
level.
Burn rate - Correct answer-Combustion rate, usually expressed in pounds of fuel
consumed per hour.
Butane - Correct answer-A colorless, odorless, non-toxic gas; not generally used in
hearth appliances.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
Exam Questions and Answers Graded A+
Air Infiltration - Correct answer-Typically, the passing of air into the house through
small cracks or gaps inherent to the structure. Affected by temperature difference
between the inside and outside of the structure, and pressure factors (E. G., Wind,
The operation of solid fuel appliances or electrical appliances such as fans).
air inlet - Correct answer-The designed ports of entry for combustion air in a
controlled combustion, solid fuel burning appliance.
Air inlet control - Correct answer-The means by which the amount of air entering
the air inlet is regulated. Also referred to as air control.
air supply - Correct answer-Broadly, the air that is supplied to the firebox of the
wood-burning appliance.
Air to fuel ratio - Correct answer-The ratio of air in fuel, by weight, and a solid
fuel appliance. It should be noted that 1 pound of dry air occupies a volume of
13.31 5 ft.³ at 70°F. Therefore, 35 pounds of air, the typical amount of air necessary
to burn 1 pound of wood in the fireplace, occupies 466 ft.³.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,Aldehydes - Correct answer-Class of compounds with distinct pungent odor,
produce steering in complete combustion of a fuel gas.
ANSI (American National Standards Institute) - Correct answer-American national
standards institute. The coordinating organization for Federated national standard
system, consisting of 900 companies in 200 trade, technical, professional, labor,
and consumer organizations.
appliance - Correct answer-A solid fuel burning product.
Appliance regulator - Correct answer-The appliance component, usually part of the
combustion valve that maintains constant gas pressure.
Appliance to fuel - Correct answer-Means of venting a solid fuel appliance
(including fireplace inserts) into Masonary fireplace chimneys; The stainless steel
connector passes from the appliance to the first clay fuel liner. Also referred to as
direct connection.
approved - Correct answer-Acceptable to the authority having jurisdiction.
Ash - Correct answer-Non-combustible solid byproduct of solid fuel combustion.
Authority Having Jurisdiction - Correct answer-The organization, office, or
individual responsible for "approving" equipment, installation, or procedure.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, Automatic gas control valve - Correct answer-(Also combustion valve). Gas valve
which combines control functions; usually consist of gas manual valve assembly;
pilot safety shut off system, diaphragm valve, gas pressure regulator, and valve
operator.
baffle - Correct answer-An obstructing device or partition in a solid fuel appliance,
used to direct the flow of gases and heat.
blower door - Correct answer-A diagnostic tool used to measure the tightness of
buildings. Consists of a calibrated fan for measuring airflow rate and a pressure
sensing device to determine house pressure levels.
breaching - Correct answer-Refers to the chimney connector access hole in a
Masonary chimney. See chimney breaching.
BTU or British Thermal Unit - Correct answer-A measure of heat energy; the
amount of heat required to raise the temperature of 1 pound of water 1°F at sea
level.
Burn rate - Correct answer-Combustion rate, usually expressed in pounds of fuel
consumed per hour.
Butane - Correct answer-A colorless, odorless, non-toxic gas; not generally used in
hearth appliances.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
