HVAC JOURNEYMAN EXAM
QUESTIONS WITH VERIFIED
ANSWERS.
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. - ANS 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. - ANS 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 -
ANS 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. -
ANS 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 - ANS A. Shall Be Constructed of sheet metal. UMC Section. 5 0 6.1
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, 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 - ANS A 511.2
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". - ANS 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. - ANS 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" - ANS 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 - ANS 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. -
ANS 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 - ANS 31 D. 701.2.1
Return air ducts that serve a dwelling unit shall be permitted to be of _____ construction?
A.non-combustible B. combustible C. rated D. none of the above. - ANS B. Shall be permitted
to be of combustible type UMC Section 602.2 Ex (1)
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS WITH VERIFIED
ANSWERS.
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. - ANS 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. - ANS 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 -
ANS 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. -
ANS 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 - ANS A. Shall Be Constructed of sheet metal. UMC Section. 5 0 6.1
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, 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 - ANS A 511.2
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". - ANS 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. - ANS 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" - ANS 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 - ANS 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. -
ANS 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 - ANS 31 D. 701.2.1
Return air ducts that serve a dwelling unit shall be permitted to be of _____ construction?
A.non-combustible B. combustible C. rated D. none of the above. - ANS B. Shall be permitted
to be of combustible type UMC Section 602.2 Ex (1)
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
