INTERNATIONAL RESIDENTIAL CODE
MECHANICAL CODE MASTER SET
EXAM QUESTIONS WITH CORRECT
ANSWERS
IMC/Residential
An appliance requires a minimum clearance without protection of 12 inches above the
appliance to combustible material. If 1/2-inch-thick insulation board with ventilated air
space is used as protection, the minimum clearance may be reduced to ______. -
ANSWER-6 inches
M1306.2
IMC/Residential
A solid-fuel-burning appliance requires a minimum clearance without protection of 18
inches from the side and back to combustible material. If 24 gage sheet metal with a
ventilated air space is used as protection, the minimum clearance may be reduced to
______. - ANSWER-12 inches
M1306.2.1 Table M1306.2
IMC/Residential
Where an appliance with an ignition source is located in the garage, the source of
ignition shall be located a minimum of ______ above the garage floor. - ANSWER-18
inches
M1307.3
IMC/Residential
A combustion air opening for a central furnace shall be unobstructed for a minimum
distance of ______ in front of the opening. - ANSWER-6 inches
M1402.3
IMC/Residential
The unobstructed total area of the outside and return air ducts or openings to a heat
pump shall be a minimum of ______ square inches per 1,000 Btu/h output rating or as
indicated by the conditions of the listing of the heatpump. - ANSWER-6
M1403.1
IMC/Residential
,In order to permit the free drainage of defrost water, the supports or foundation for the
outdoor unit of a heat pump shall be raised a minimum of ______ above the ground. -
ANSWER-3 inches
M1403.2
IMC/Residential
What is the maximum permitted operating temperature for a radiant heating system
used on a gypsum assembly? - ANSWER-125* F
M1406.5
IMC/Residential
Unless Listed and labeled for closer installation, a duct heater shall be located a
minimum of ______ from a heat pump or air conditioner. - ANSWER-48 inches
M1407.3
IMC/Residential
The furnace register of a vented floor furnace shall be located a minimum of ______
from doors in any position, draperies and other similar combustible objects. - ANSWER-
12 inches
M1408.3 # 3
IMC/Residential
The access open through the foundation wall to a vented floor furnace shall have a
minimum size of ______. - ANSWER-18-inches by 24-inches
M1408.4
IMC/Residential
Where the lower 6 inches of a vented floor furnace is sealed to prevent water entry, a
minimum ______ clearance shall be provided between the furnace and the ground. -
ANSWER-2-inch
M1408.5 #3
IMC/Residential
A minimum clearance of ______ shall be provided between the inlet or outlet of a
vented wall furnace and a door at any point in its swing, measured at a right angle to the
opening. - ANSWER-12 inches
M1409.2 #2
IMC/Residential
, Unless listed and labeled for such use, cooling coils or refrigeration cooling equipment
shall not be located ______ of heat exchangers. - ANSWER-upstream
M1411.2
IMC/Residential
Drain piping for refrigeration cooling equipment shall be a minimum of ______ nominal
pipe size. - ANSWER-3/4 inch
M1411.3.1
IMC/Residential
Where an auxiliary drain pan with a separate drain is installed under the cooling coils
where condensate will occur, the minimum depth of the pan shall be ______ . -
ANSWER-1 1/2 inches
M1411.3.1 #1
IMC/Residential
Evaporative coolers shall be installed on a level platform or base located a minimum of
______ above the adjoining ground. - ANSWER-3 inches
M1413.1
IMC/Residential
The supporting structure for a hearth extension for a fireplace stove shall be located
______ the supporting structure for the fireplaace unit. - ANSWER-at the same level as
M1414.2
IMC/Residential
Where an appliance is Located in an underfloor space, a minimum ______ level service
space shall be provided at the front or service side of the appliance. - ANSWER-30-inch
by 30-inch
M1305.1.4
IMC/Residential
The required lower strapping for a water heater in Seismic Design Categories D1 and
D2 shall be located a minimum of ______ inches above the controls. - ANSWER-4
inches
M1307.2
IMC/Residential
MECHANICAL CODE MASTER SET
EXAM QUESTIONS WITH CORRECT
ANSWERS
IMC/Residential
An appliance requires a minimum clearance without protection of 12 inches above the
appliance to combustible material. If 1/2-inch-thick insulation board with ventilated air
space is used as protection, the minimum clearance may be reduced to ______. -
ANSWER-6 inches
M1306.2
IMC/Residential
A solid-fuel-burning appliance requires a minimum clearance without protection of 18
inches from the side and back to combustible material. If 24 gage sheet metal with a
ventilated air space is used as protection, the minimum clearance may be reduced to
______. - ANSWER-12 inches
M1306.2.1 Table M1306.2
IMC/Residential
Where an appliance with an ignition source is located in the garage, the source of
ignition shall be located a minimum of ______ above the garage floor. - ANSWER-18
inches
M1307.3
IMC/Residential
A combustion air opening for a central furnace shall be unobstructed for a minimum
distance of ______ in front of the opening. - ANSWER-6 inches
M1402.3
IMC/Residential
The unobstructed total area of the outside and return air ducts or openings to a heat
pump shall be a minimum of ______ square inches per 1,000 Btu/h output rating or as
indicated by the conditions of the listing of the heatpump. - ANSWER-6
M1403.1
IMC/Residential
,In order to permit the free drainage of defrost water, the supports or foundation for the
outdoor unit of a heat pump shall be raised a minimum of ______ above the ground. -
ANSWER-3 inches
M1403.2
IMC/Residential
What is the maximum permitted operating temperature for a radiant heating system
used on a gypsum assembly? - ANSWER-125* F
M1406.5
IMC/Residential
Unless Listed and labeled for closer installation, a duct heater shall be located a
minimum of ______ from a heat pump or air conditioner. - ANSWER-48 inches
M1407.3
IMC/Residential
The furnace register of a vented floor furnace shall be located a minimum of ______
from doors in any position, draperies and other similar combustible objects. - ANSWER-
12 inches
M1408.3 # 3
IMC/Residential
The access open through the foundation wall to a vented floor furnace shall have a
minimum size of ______. - ANSWER-18-inches by 24-inches
M1408.4
IMC/Residential
Where the lower 6 inches of a vented floor furnace is sealed to prevent water entry, a
minimum ______ clearance shall be provided between the furnace and the ground. -
ANSWER-2-inch
M1408.5 #3
IMC/Residential
A minimum clearance of ______ shall be provided between the inlet or outlet of a
vented wall furnace and a door at any point in its swing, measured at a right angle to the
opening. - ANSWER-12 inches
M1409.2 #2
IMC/Residential
, Unless listed and labeled for such use, cooling coils or refrigeration cooling equipment
shall not be located ______ of heat exchangers. - ANSWER-upstream
M1411.2
IMC/Residential
Drain piping for refrigeration cooling equipment shall be a minimum of ______ nominal
pipe size. - ANSWER-3/4 inch
M1411.3.1
IMC/Residential
Where an auxiliary drain pan with a separate drain is installed under the cooling coils
where condensate will occur, the minimum depth of the pan shall be ______ . -
ANSWER-1 1/2 inches
M1411.3.1 #1
IMC/Residential
Evaporative coolers shall be installed on a level platform or base located a minimum of
______ above the adjoining ground. - ANSWER-3 inches
M1413.1
IMC/Residential
The supporting structure for a hearth extension for a fireplace stove shall be located
______ the supporting structure for the fireplaace unit. - ANSWER-at the same level as
M1414.2
IMC/Residential
Where an appliance is Located in an underfloor space, a minimum ______ level service
space shall be provided at the front or service side of the appliance. - ANSWER-30-inch
by 30-inch
M1305.1.4
IMC/Residential
The required lower strapping for a water heater in Seismic Design Categories D1 and
D2 shall be located a minimum of ______ inches above the controls. - ANSWER-4
inches
M1307.2
IMC/Residential
