HVAC JOURNEYMAN
HVAC JOURNEYMAN Exam Questions and Correct
Detailed Answers Top Rated 2025
Defects on gas piping or fittings shall be _____.(A) repaired(B) replaced or repaired and
retested(C) repaired by a certified welder(D) ignored, as the operating pressure is much
less than the air test. -Correct Answer ✔B. Fitting shall be replaced or repaired and
retested. UMC Section 1316.4.3
Every absorption refrigerating system supported from the ground shall rest on a
concrete slab extending not less than _____ the adjoining ground level.(A) 3 inches
below(B) 3 inches above (C) 6 inches below(D) 6 inches above. -Correct Answer ✔B. Slab
extending not less than 3" above the adjoining ground level. UMC Section 1106.2
Any part of a venting system installed at an angle greater than 45 degrees from the
vertical is considered by code to be _____.(A) vertica(B) horizontal l (C) a flat vent (D) an
offset vent -Correct Answer ✔B. any part of the venting installed at an angle GREATER
than 45 degrees is considered by this code to be Horizontal UMC Section 802.6.1.1
Listed transition ducts f or clothes dryers shall not exceed_____ feet in length. A.3 B.4
C.5 D.6. -Correct Answer ✔D. Dryers shall not exceed 6 feet in length. UMC Section
504.3.2.1
Industrial product-conveying ducts and their fittings for abrasive and nonabrasive dust or
solid materials shall be constructed of _____.(A) sheet meta(B) polyvinyl chloride l (C)
fiberglass (D) A and C apply -Correct Answer ✔A. Shall Be Constructed of sheet metal.
UMC Section. 5 0 6.1
Industrial product-conveying ducts and their fittings for abrasive and nonabrasive dust or
solid materials shall be constructed of _____.(A) sheet metal ((B) polyvinyl chloride C)
fiberglass (D) A and C apply -Correct Answer ✔A 511.2
HVAC JOURNEYMAN
, HVAC JOURNEYMAN
Unlisted vented gas fireplaces shall have a clearance at the sides and rear of not less
than _____ inches. Is the Answer: A. 10" B. 12" C 16" D. 18". -Correct Answer ✔D.
clearance of an unlisted vented gas fireplace at the sides and the rear not less than 18".
UMC Section 908.2(B)
Leaks in gas piping shall be located _____.(A) with a sniffer(B) with a presto-lite flame (C)
with a noncorrosive leak-detecting fluid (D) by increasing the air pressure during a test
until the leaks are heard as a whistle. -Correct Answer ✔C. leaks in a gas piping shall be
located with a non corrosive leak detecting fluid. UMC Section 1316.4.2
Condensate drain piping shall have a slope of not less than _____ inch per foot. A 1⁄8"
B.¼" C.½" D. 1" -Correct Answer ✔A. Slope of not less than 1/8" per foot. UMC Section
309.1
The minimum gauge or size steel wire used to support horizontal metal ducts 10 inches
or less in size is _____. A.14 AWG B.16 AWG C.18 AWG D.20 AWG -Correct Answer ✔C.
18 Minimum Gauge note: AWG is the abbreviation for "gauge size" Table 6-7(B)
When smoke detectors are required as part of an automatic shutoff system, they shall be
installed in the _____. A. return air duct ahead of any fresh-air inlet(B) main supply air
duct served by such equipment(C) fresh-air inlet(D) main return and the main supply
duct. -Correct Answer ✔B. shall be installed in the main supply air duct served by
equipment. UMC Section 609.0(5)
The largest fuel-burning appliance allowed in a room 100'W x 20'L x 8'H without
combustion air openingsis _____ Btu.(A) 80,000 (C) 140,000(B) 100,000 (D) 320,000 -
Correct Answer ✔31 D. 701.2.1
HVAC JOURNEYMAN
HVAC JOURNEYMAN Exam Questions and Correct
Detailed Answers Top Rated 2025
Defects on gas piping or fittings shall be _____.(A) repaired(B) replaced or repaired and
retested(C) repaired by a certified welder(D) ignored, as the operating pressure is much
less than the air test. -Correct Answer ✔B. Fitting shall be replaced or repaired and
retested. UMC Section 1316.4.3
Every absorption refrigerating system supported from the ground shall rest on a
concrete slab extending not less than _____ the adjoining ground level.(A) 3 inches
below(B) 3 inches above (C) 6 inches below(D) 6 inches above. -Correct Answer ✔B. Slab
extending not less than 3" above the adjoining ground level. UMC Section 1106.2
Any part of a venting system installed at an angle greater than 45 degrees from the
vertical is considered by code to be _____.(A) vertica(B) horizontal l (C) a flat vent (D) an
offset vent -Correct Answer ✔B. any part of the venting installed at an angle GREATER
than 45 degrees is considered by this code to be Horizontal UMC Section 802.6.1.1
Listed transition ducts f or clothes dryers shall not exceed_____ feet in length. A.3 B.4
C.5 D.6. -Correct Answer ✔D. Dryers shall not exceed 6 feet in length. UMC Section
504.3.2.1
Industrial product-conveying ducts and their fittings for abrasive and nonabrasive dust or
solid materials shall be constructed of _____.(A) sheet meta(B) polyvinyl chloride l (C)
fiberglass (D) A and C apply -Correct Answer ✔A. Shall Be Constructed of sheet metal.
UMC Section. 5 0 6.1
Industrial product-conveying ducts and their fittings for abrasive and nonabrasive dust or
solid materials shall be constructed of _____.(A) sheet metal ((B) polyvinyl chloride C)
fiberglass (D) A and C apply -Correct Answer ✔A 511.2
HVAC JOURNEYMAN
, HVAC JOURNEYMAN
Unlisted vented gas fireplaces shall have a clearance at the sides and rear of not less
than _____ inches. Is the Answer: A. 10" B. 12" C 16" D. 18". -Correct Answer ✔D.
clearance of an unlisted vented gas fireplace at the sides and the rear not less than 18".
UMC Section 908.2(B)
Leaks in gas piping shall be located _____.(A) with a sniffer(B) with a presto-lite flame (C)
with a noncorrosive leak-detecting fluid (D) by increasing the air pressure during a test
until the leaks are heard as a whistle. -Correct Answer ✔C. leaks in a gas piping shall be
located with a non corrosive leak detecting fluid. UMC Section 1316.4.2
Condensate drain piping shall have a slope of not less than _____ inch per foot. A 1⁄8"
B.¼" C.½" D. 1" -Correct Answer ✔A. Slope of not less than 1/8" per foot. UMC Section
309.1
The minimum gauge or size steel wire used to support horizontal metal ducts 10 inches
or less in size is _____. A.14 AWG B.16 AWG C.18 AWG D.20 AWG -Correct Answer ✔C.
18 Minimum Gauge note: AWG is the abbreviation for "gauge size" Table 6-7(B)
When smoke detectors are required as part of an automatic shutoff system, they shall be
installed in the _____. A. return air duct ahead of any fresh-air inlet(B) main supply air
duct served by such equipment(C) fresh-air inlet(D) main return and the main supply
duct. -Correct Answer ✔B. shall be installed in the main supply air duct served by
equipment. UMC Section 609.0(5)
The largest fuel-burning appliance allowed in a room 100'W x 20'L x 8'H without
combustion air openingsis _____ Btu.(A) 80,000 (C) 140,000(B) 100,000 (D) 320,000 -
Correct Answer ✔31 D. 701.2.1
HVAC JOURNEYMAN
