Final HVAC Journeyman's Study Set
Questions with Accurate Solutions
2025-2026 Edition.
The maximum horizontal length of a single-wall connector shall be ____ percent of the height of
the chimney or vent. - Answer 75%
Grease filters shall be installed at an angle of not less that ____ degrees from the horizontal and
shall be equipped with a drip tray beneath the lower edge of the filters - Answer 45
A device that will automatically shut off the fuel supply to a main burner or group of burners
when the means of ignition of such burners become inoperative, and when flame failure occurs
on the burner or group of burners. - Answer Flame Safeguard
Fire dampers shall not be installed in. - Answer Exhaust ducts.
Metallic ducts not having an approved protective coating shall be completely encased in a
minimum of ___ inches of concrete - Answer 2 inches
An appliance that operates with a nonpositive vent static pressure and with a vent gas
temperature that is capable of causing excessive condensate production in the vent. - Answer
Category 2
Type L shall terminate not less than two feet above the highest point of the roof penetration
and not less than ______ feet higher than any portion of a building - Answer 2 Feet
Duct Linings shall be interrupted at the area of operation of a fire damper in at a minimum of 6
inches _____ of and 6 inches downstream of electric resistance and fuel burning heaters in a
duct system - Answer Upstream
A container that is placed at a low point in a system of piping to collect condensate and from
which the condensate is removable. - Answer Drip leg
Infrared radiant heaters shall be _____ in a position independent of fuel and electric supply
lines hangers and bracket shall be non-combustible material - Answer Fixed
,Opening sizes in Louver, grilles, and screens protecting outdoor exhaust and air intake openings
you would use which table? - Answer Table 401.5
A hole not greater in diameter than ____ % of the stud depth is permitted to be bored in any
wood stud. - Answer 40%
Reclaimed refrigerants and used refrigerants shall not be reused in a different owner's
equipment or appliances. Unless test and meets purity requirements of _____. - Answer ARI
700
where multiple air-handling systems share common supply or return air ducts or plenums with a
combined design capacity greater than 2000 cfm, the return air systen shall be provided with. -
Answer Smoke detector
The length of overlap for overlapping duct joints shall not exceed ___ inches. - Answer 2
inches
A yellow insulated copper Tracer wire or other approved conductor shall be installed adjacent to
underground non-metallic piping access shall be provided to the Tracer wire or the Tracer wire
shall terminate above ground at each end of the nonmetallic piping the Tracer wire shall not be
less than _____ AWG and the insulation type shall be suitable for the direct burial - Answer 18
AWG
Excavations are ___ feet in depth and examination of the ground shows no indication of
potential cave in. - Answer 5 feet
An appliance that operates with a nonpositive vent static pressure and with a vent gas
temperature that avoids excessive condensate production in the vent. - Answer Category 1
A safety valve designed to forestall the development of a dangerous condition by relieving
either pressure, temperature. or vacuum in hot water supply system. - Answer Relief Valve
All refrigerant containing parts and systems exceeding 100 horsepower Drive power except
evaporators used for refrigeration or dehumidification; condensers used for heating control and
pressure valves for either; and connecting piping, shall be located either. - Answer Outdoors or
in a machinery room.
, Where all combustion air and dilution air is provided by a mechanical forced air system the
combustion air and dilution air shall be supplied at the minimum rate of 1 CFM per _____
BTU/h of combined input rating of all the fuel-burning appliances serve - Answer 1000
Commercial clothes dryers transition ducts used to connect the appliance to the exhaust duct
system shall be limited to single lengths not to exceed ____ feet in length and shall be listed and
labeled for the application. - Answer 8 feet
With exposed flame and burners the lowest edge of a grease filter located above the cooking
surface shall be not less than ___ ft from the cooking surface. - Answer 2
______ air is provided to replace air being exhausted. - Answer Make up
Appliances regulated by this code shall be listed and labeled for the application in which they
are used funless otherwise approved in accordance with section 105. the approval of unlisted
appliances in accordance with _______ shall be based upon approved engineering systems. -
Answer section 105
The test medium gas piping shall be? _____, __________, ________, or an ________. - Answer
Air, nitrogen carbon dioxide, or an inert gas.
Where the appliance has more than one flue outlet and in the absence of the manufacturer's
specific instructions the connector area shall not be less than the ____ area of the flue outlets
for which it acts as a common connector. - Answer Combined
________ exhaust ducts systems shall extend directly to the exterior of the building and shall
not extend into or through ducts and plenums. - Answer Hazardous
The minimum unobstructed total area of the outdoor and return air ducts or openings to a heat
pump shall be not less than ______ square inches per 1000 BTU/h our output rating or as
indicated by the conditions of listed of the heat pump - Answer 6 square inches
the leakage shall be located by means of an improved gas detector a noncorrosive Leak
Detection fluid or other approved leak detection methods. Of the list below which may not be
used.
Questions with Accurate Solutions
2025-2026 Edition.
The maximum horizontal length of a single-wall connector shall be ____ percent of the height of
the chimney or vent. - Answer 75%
Grease filters shall be installed at an angle of not less that ____ degrees from the horizontal and
shall be equipped with a drip tray beneath the lower edge of the filters - Answer 45
A device that will automatically shut off the fuel supply to a main burner or group of burners
when the means of ignition of such burners become inoperative, and when flame failure occurs
on the burner or group of burners. - Answer Flame Safeguard
Fire dampers shall not be installed in. - Answer Exhaust ducts.
Metallic ducts not having an approved protective coating shall be completely encased in a
minimum of ___ inches of concrete - Answer 2 inches
An appliance that operates with a nonpositive vent static pressure and with a vent gas
temperature that is capable of causing excessive condensate production in the vent. - Answer
Category 2
Type L shall terminate not less than two feet above the highest point of the roof penetration
and not less than ______ feet higher than any portion of a building - Answer 2 Feet
Duct Linings shall be interrupted at the area of operation of a fire damper in at a minimum of 6
inches _____ of and 6 inches downstream of electric resistance and fuel burning heaters in a
duct system - Answer Upstream
A container that is placed at a low point in a system of piping to collect condensate and from
which the condensate is removable. - Answer Drip leg
Infrared radiant heaters shall be _____ in a position independent of fuel and electric supply
lines hangers and bracket shall be non-combustible material - Answer Fixed
,Opening sizes in Louver, grilles, and screens protecting outdoor exhaust and air intake openings
you would use which table? - Answer Table 401.5
A hole not greater in diameter than ____ % of the stud depth is permitted to be bored in any
wood stud. - Answer 40%
Reclaimed refrigerants and used refrigerants shall not be reused in a different owner's
equipment or appliances. Unless test and meets purity requirements of _____. - Answer ARI
700
where multiple air-handling systems share common supply or return air ducts or plenums with a
combined design capacity greater than 2000 cfm, the return air systen shall be provided with. -
Answer Smoke detector
The length of overlap for overlapping duct joints shall not exceed ___ inches. - Answer 2
inches
A yellow insulated copper Tracer wire or other approved conductor shall be installed adjacent to
underground non-metallic piping access shall be provided to the Tracer wire or the Tracer wire
shall terminate above ground at each end of the nonmetallic piping the Tracer wire shall not be
less than _____ AWG and the insulation type shall be suitable for the direct burial - Answer 18
AWG
Excavations are ___ feet in depth and examination of the ground shows no indication of
potential cave in. - Answer 5 feet
An appliance that operates with a nonpositive vent static pressure and with a vent gas
temperature that avoids excessive condensate production in the vent. - Answer Category 1
A safety valve designed to forestall the development of a dangerous condition by relieving
either pressure, temperature. or vacuum in hot water supply system. - Answer Relief Valve
All refrigerant containing parts and systems exceeding 100 horsepower Drive power except
evaporators used for refrigeration or dehumidification; condensers used for heating control and
pressure valves for either; and connecting piping, shall be located either. - Answer Outdoors or
in a machinery room.
, Where all combustion air and dilution air is provided by a mechanical forced air system the
combustion air and dilution air shall be supplied at the minimum rate of 1 CFM per _____
BTU/h of combined input rating of all the fuel-burning appliances serve - Answer 1000
Commercial clothes dryers transition ducts used to connect the appliance to the exhaust duct
system shall be limited to single lengths not to exceed ____ feet in length and shall be listed and
labeled for the application. - Answer 8 feet
With exposed flame and burners the lowest edge of a grease filter located above the cooking
surface shall be not less than ___ ft from the cooking surface. - Answer 2
______ air is provided to replace air being exhausted. - Answer Make up
Appliances regulated by this code shall be listed and labeled for the application in which they
are used funless otherwise approved in accordance with section 105. the approval of unlisted
appliances in accordance with _______ shall be based upon approved engineering systems. -
Answer section 105
The test medium gas piping shall be? _____, __________, ________, or an ________. - Answer
Air, nitrogen carbon dioxide, or an inert gas.
Where the appliance has more than one flue outlet and in the absence of the manufacturer's
specific instructions the connector area shall not be less than the ____ area of the flue outlets
for which it acts as a common connector. - Answer Combined
________ exhaust ducts systems shall extend directly to the exterior of the building and shall
not extend into or through ducts and plenums. - Answer Hazardous
The minimum unobstructed total area of the outdoor and return air ducts or openings to a heat
pump shall be not less than ______ square inches per 1000 BTU/h our output rating or as
indicated by the conditions of listed of the heat pump - Answer 6 square inches
the leakage shall be located by means of an improved gas detector a noncorrosive Leak
Detection fluid or other approved leak detection methods. Of the list below which may not be
used.
