HVAC JOURNEYMAN EXAM WITH VERIFIED ANSWERS

HVAC JOURNEYMAN EXAM WITH VERIFIED ANSWERS

1. Defects on gas piping or fittings shall be .(A) B. Fitting shall be
repaired(B) replaced or repaired and retested(C) re- replaced or re-
paired by a certified welder(D) ignored, as the oper- paired and retest-
ating pressure is much less than the air test. ed. UMC Section
1316.4.3

2. Every absorption refrigerating system supported B. Slab extend-
from the ground shall rest on a concrete slab ex- ing not less than
tending not less than the adjoining ground lev- 3" above the ad-
el.(A) 3 inches below(B) 3 inches above (C) 6 inches joining ground lev-
below(D) 6 inches above. el. UMC Section
1106.2

3. Any part of a venting system installed at an angle B. any part of
greater than 45 degrees from the vertical is consid- the venting in-
ered by code to be .(A) vertica(B) horizontal l stalled at an angle
(C) a flat vent (D) an offset vent GREATER than 45
degrees is consid-
ered by this code to
be Horizontal UMC
Section 802.6.1.1

4. Listed transition ducts f or clothes dryers shall not D. Dryers shall not
exceed feet in length. A.3 B.4 C.5 D.6. exceed 6 feet in
length. UMC Sec-
tion 504.3.2.1

5. Industrial product-conveying ducts and their fittings A. Shall Be Con-
for abrasive and nonabrasive dust or solid materi- structed of sheet
als shall be constructed of .(A) sheet meta(B) metal. UMC Sec-
polyvinyl chloride l (C) fiberglass (D) A and C apply tion. 5 0 6.1

6. Industrial product-conveying ducts and their fittings A 511.2
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

7. D. clearance of
an unlisted vent-



, HVAC JOURNEYMAN EXAM WITH VERIFIED ANSWERS

Unlisted vented gas fireplaces shall have a clearance ed gas fireplace at
at the sides and rear of not less than inches. the sides and the
Is the Answer: A. 10" B. 12" C 16" D. 18". rear not less than
18". UMC Section
908.2(B)

8. Leaks in gas piping shall be located .(A) with a C. leaks in a gas
sniffer(B) with a presto-lite flame (C) with a noncor- piping shall be lo-
rosive leak-detecting fluid (D) by increasing the air cated with a non
pressure during a test until the leaks are heard as a corrosive leak de-
whistle. tecting fluid. UMC
Section 1316.4.2

9. Condensate drain piping shall have a slope of not A. Slope of not
less than inch per foot. A 1D8" B.¼" C.½" D. 1"less than 1/8" per
foot. UMC Section
309.1

10. The minimum gauge or size steel wire used to sup- C. 18 Minimum
port horizontal metal ducts 10 inches or less in size Gauge note: AWG
is . A.14 AWG B.16 AWG C.18 AWG D.20 AWG is the abbreviation
for "gauge size"
Table 6-7(B)

11. When smoke detectors are required as part of an B. shall be installed
automatic shutoff system, they shall be installed in in the main supply
the . A. return air duct ahead of any fresh-air air duct served by
inlet(B) main supply air duct served by such equip- equipment. UMC
ment(C) fresh-air inlet(D) main return and the main Section 609.0(5)
supply duct.

12. The largest fuel-burning appliance allowed in a room 31 D. 701.2.1
100'W x 20'L x 8'H without combustion air opening-
sis Btu.(A) 80,000 (C) 140,000(B) 100,000 (D)
320,000

13. Return air ducts that serve a dwelling unit shall be B. Shall be permit-
permitted to be of construction? A.non-com- ted to be of com-
bustible B. combustible C. rated D. none of the bustible type UMC
above.