HVAC JOURNEYMAN TEST 2024 -2025 UPDATE
ACTUAL EXAM ALL QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) 100% PASS SOLUTION /ALREADY
GRADED A+
What is the minimum required distance that a connector to a masonry chimney flue shall be above the lowest portion of the interior chimney flue?A- 24 inches B- 6 inches C- 18 inches D- 12 inches - ANSWER✔✔D- 12 inches (IFGC - TABLE 501.9) (IMC - 801.12) A hole is bored into a wood stud in a nonbearing partition. It's diameter cannot be more than __ percent of the stud depth.A- 40 B- 75 C- 60
D- 25 - ANSWER✔✔C- 60 (IMC - 302.3.3)
Carbon steel pipe with a wall thickness not less than __ shall be used for A2 refrigerant liquid lines for the sizes 1.5 inches and smaller.
A- EMT
B- FMT 1 / 4
C- Schedule 80 D- Schedule 40 - ANSWER✔✔C- Schedule 80 (IMC - 1107.5.1) The purpose of a trench box system is..A- to provide a means of egress from an excavation B- to support the sidewalls of an excavation to prevent cave ins.C- to prevent surface water from entering the excavation D- to shield the excavation from hazardous substances stored nearby - ANSWER✔✔B- to support the sidewalls of an excavation to prevent cave ins.A normal pipe size of 6-inch gas pipe needs to be purged with inert gas prior to servicing. What is the length of piping requiring purging?A- greater than 10 feet B- greater than 15 feet C- greater than 20 feet D- greater than 30 feet - ANSWER✔✔A- greater than 10 feet ( IMC - TABLE 406.7.1.1 size and length of piping) The best alternative to connect Chlorinated Poly Vinyl Chloride (CPVC) pipe joints in a hydronic heating system is by__.A- heat-fused fittings B- solvent cement C- brazing D- welding - ANSWER✔✔B- solvent cement (IMC - 1203.9) 2 / 4
The __ is better described as the section of air distribution system to which one or more ducts are connected.A- register B- duct system C- plenum D- grille - ANSWER✔✔C- plenum OSHA defines a __ as any space having a limited means of egress, which is subject to the accumulation of toxic or flammable contaminants or has an oxygen deficient atmosphere.A- hazardous area B- restricted area C- contaminated space D- confined space - ANSWER✔✔D- confined space How far shall a gas vent extend above a roof of a house when the roof has a slope of 9/12?A- 2 feet B- 2 1/2 feet C- 5 feet D- 4 feet - ANSWER✔✔A- 2 feet (IFGC - Figure 503.6.4) What is the minimum amount of copper in red brass that is used for refrigerant piping?A- 70 percent B- 20 percent C- 40 percent 3 / 4
D- 80 percent - ANSWER✔✔D- 80 percent (IMC - 1107.5.2) Which type of compressor requires a crankshaft seal?A- a semi-hermetic compressor B- a scroll compressor C- an open compressor D- a hermetic compressor - ANSWER✔✔C- an open compressor The vent connector of a gas appliance entering an existing masonry chimney shall be located NOT less than __ inches from the bottom of the chimney.A- 6 B- 12 C- 16 D- 18 - ANSWER✔✔B- 12 (IFGC - 501.9 chimney entrance) When piping in solid floors is subject to excessive __, the piping shall be protected in an approved manner.A- pressure B- heat C- cold D- moisture - ANSWER✔✔D- moisture (IFGC - TABLE 404.8) Which of the following refrigerants is not required to be schedule 80 for 1-inch carbon steel?
A- R-170
B- R-717
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