Download HVAC Journeyman Exam Prep: 130 Q&A for 2025-2026 and more Exams Operating Systems in PDF only on Docsity!
HVAC JOURNEYMAN EXAM|2025-2026| 130 Qs&As|
100% VERIFIED|GRADED A+
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. B. Fitting shall be replaced or repaired and retested. UMC Section 1316.4. 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. B. Slab extending not less than 3" above the adjoining ground level. UMC Section 1106. 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 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. Listed transition ducts f or clothes dryers shall not exceed_____ feet in length. A. B. C. D.6. D. Dryers shall not exceed 6 feet in length. UMC Section 504.3.2. 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 A. Shall Be Constructed of sheet metal. UMC Section. 5 0 6.
C. leaks in a gas piping shall be located with a non corrosive leak detecting fluid. UMC Section 1316.4. Condensate drain piping shall have a slope of not less than _____ inch per foot. A 1⁄8" B.¼" C.½" D. 1" A. Slope of not less than 1/8" per foot. UMC Section 309. 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 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. 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, (C) 140, (B) 100, (D) 320, 31 D. 701.2. 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. B. Shall be permitted to be of combustible type UMC Section 602.2 Ex (1)
19 C 1313.
An appliance designed primarily to supply hot water equipped with automatic controls limiting water 20 B 1201.2.1. temperature to a maximum of 210°F is a _____.(A) water heater (C) expansion tank(B) steam boiler (D) gas heater. 21 A 507.1. ... 22 D 1129. A cooling coil is to be installed in a duct system containing an existing furnace heat exchanger. Unless 23 C 907. otherwise listed, the code requires that the air flows first through _____.(A) the heat exchanger (C) a diverter unit(B) the cooling coil (D) a bypass duct 24 C 903.
25 D 802.7.4.
The space in which any floor furnace is installed shall be accessible by an opening in the foundation not 26 B 1312.3. less than _____.(A) 24'' x 24'' (C) 20'' x 20''(B) 24'' x 18'' (D) none of the above 27 C 507.2. ... 28 B 510.7. Buildings of more than _____ feet in height shall have an inside means of access to the roof.(A) 14 (C) 15 (B) 16 (D) 20 29 C 701.
34 A 212.
Floor furnaces shall be protected, where necessary, against _____.(A) severe wind conditions (C) damage by mechanical means(B) contact with fire-rated material (D) contact with noncombustible material 35 D 205. ... 36 A 225. Sediment traps in fuel-gas lines are not required to _____.A) hydronic boilers (C) residential furnaces(B) gas fireplaces (D) commercial furnaces. 37 A 911.6(B) ... 38 B 912. Condensate from air-cooling coils and the overflow from evaporative coolers shall be collected and 39 C 304.1.2,
discharged to a(an) _____.(A) public way (C) approved plumbing fixture or disposal area(B) plumbing fixture (D) storm sewer. 904.10. ... 40 B Table 3- 2 Front clearance to a furnace or boiler shall be _____.(A) minimum 6 inches to combustibles(B) minimum 6 inches to a door or an obstruction(C) minimum 9 inches to combustibles(D) sufficient for servicing the burner and the furnace or boiler 41 D 912. ... 42 A 912. Where a furnace plenum is not supplied with the furnace, the fabrication and installation shall _____.(A) be no smaller than the outlet/inlet plenum collar(B) follow manufacturer's instructions(C) be in a workman-like manner(D) not interfere with electrical wiring.
Relief valves shall be piped to discharge _____.(A) near the floor (C) 6 feet above the floor(B) above the roof (D) 6 feet from a window or door 48 D 922.2(C) ... 49 A 904.6(1) Support of round horizontal ducts 10 inch diameter and less requires _____. 50 A Table 6-7B (A) 1 inch wide galvanized straps or No. 18 gauge wire, 10 feet on centers(B) 1 inch wide galvanized straps or No. 18 gauge galvanized wire, 8 feet on centers(C) 1 inch x 1 ⁄8 inch metal strap, 12 feet on centers(D) 1 inch x 1 ⁄8 inch metal strap, 8 feet on centers 51 B 405. Evaporative coolers shall be accessible for inspection, service, and replacement without removing _____. (A) electrical panels (C) access doors(B) permanent construction (D) smoke detectors
52 A 903.
Air-conditioning equipment shall have a means for interrupting the electrical supply within _____ from 53 D 1201.2.3. the equipment.(A) sight of and not more than 50 feet (C) sight of and not more than 35 feet(B) sight of and not more than 25 feet (D) the same story and not more than 25 feet 54 C 1014. Hydronic copper tube joints installed under a building and in or under a concrete slab shall be _____. 55 C 1313. (A) brazed(B) soldered, with 95 percent tin and 5 percent antimony solder(C) soldered, with 50 percent tin and 50 percent lead solder(D) silver brazed or equal 56 B 904.10. ...
acceptable to the Authority Having Jurisdiction is used.(A) a permanent outside ladder fixed to the building for roof access(B) an inside means of access to the roof(C) permanent inside or outside means of access to the roof(D) a portable ladder means of access to the roof 63 A 510.8.2(B) ... 64 B 604. The main burner of a gas fired boiler shall have an approved manual shutoff valve installed _____. 65 B 205. (A) upstream of all control devices(B) downstream of all control devices(C) either upstream or downstream of all control devices(D) when no regulating valve is installed 66 C 504.3.
Metal ducts installed in or under a concrete slab shall be _____.(A) insulated (C) encased in at least 2 inches of sand(B) protected from damage (D) encased in at least 2 inches of concrete 67 D 503. A flammable vapor or fume exceeds _____ percent of its lower flammability limit (LFL).(A) 10 (C) 50(B) 25 (D) 75 68 C 504.3. Heating equipment located in rooms where cellulose nitrate plastic is stored or processed shall _____. 69 C 203. (A) be removed (C) comply with the Fire Code(B) be elevated 4 feet (D) have automatic controls 70 B 510.3. Exhaust outlets for ducts conveying explosive or flammable vapors, fumes, or dust shall terminate outside 71 A 504.3.
Metal ducts shall be securely fastened in place at _____.(A) 6 foot intervals (C) 10 foot intervals(B) each change of direction (D) 3 foot intervals 77 C 1126. A confined space is a room or space having a volume less than _____ cubic feet per 1,000 Btu/h of the 78 D 1109. aggregate input rating of all fuel-burning appliances installed in that space.(A) 20 (C) 100(B) 50 (D) 200 79 A 701.3.1(1) Commercial clothes dryers' exhaust ducts shall _____. 80 C 405. (A) not exceed 14 feet in length including two 90 degree elbows(B) not exceed 16 feet in length including two 90 degree elbows(C) comply with the manufacturers' installation instructions(D) not pass through fire-rated construction 81 B 701.9(C)
Liquid adhesive coatings used on listed air filters shall be of a type that will _____.(A) impede air flow (C) generate noise(B) clog easily (D) have a flash point of 350°F or higher. 82 B 604. Ducts for exhausting clothes dryers shall not be put together with _____.(A) draw bands (C) metal screws(B) solder (D) snap-lock joints. 83 C 504.3. A blower or fan used for the purpose of distributing supply air to a room, space, or area is a(an) _____.(A) absorption system (C) air-handling unit(B) appliance (D) portable cooling unit. 84 C 802.10.7(1) Exhaust fans with ductwork connected to both sides shall have access for cleaning and inspection within 85 B 802.10. _____ of each side of the fan.(A) 1 foot (C) 5 feet(B) 3 feet (D) 6 feet 86 D 504.
