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HVAC JOURNEYMAN EXAM AND PREP TEST EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
202 4/2025 ALREADY GRADED A+ LATEST UPDATE
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. ANSWER: โ- 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. ANSWER: โ- B. Slab extending not less than 3" above the adjoining ground level. UMC Section
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 ANSWER: โ- 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.3 B.4 C.5 D.6. ANSWER: โ- 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 ANSWER: โ- A. Shall Be Constructed of sheet metal. UMC Section. 5 0 6. 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 ANSWER: โ- A 511.
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. ANSWER: โ- 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 ANSWER: โ- 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. ANSWER: โ- B. Shall be permitted to be of combustible type UMC Section 602.2 Ex (1) Solid fuel-burning appliances _____ be connected to a venting system that serves a gas- or oil-burningappliance.(A) shall (B) may (C)
shall not(D) with special approval may ANSWER: โ- C. appliances shall not UMC Section 802.5.5. Any joint obtained by joining of metal parts with alloys that melt at temperatures higher than 840ยฐF, but lowerthan the melting temperature of the parts to be joined, is a _____ joint.(A) brazed(B) fused (D) soldered (C) welded ANSWER: โ- A. Is a brazed joint UMC section 2 1 2. A vessel or arrangement of piping or tubing in which vaporized refrigerant is liquefied by removal of heat is a _____.(A) compressor (C) evaporator(B) generator (D) condenser ANSWER: โ- D. A condenser is the piping which vaporizes the refrigerant liquefied by removal of heat, UMC Section 2 0 5. is a _____.(A) compressor (C) evaporator(B) generator (D) condenser ANSWER: โ- 18 D 502. ... ANSWER: โ- 19 C 1313.
The space in which any floor furnace is installed shall be accessible by an opening in the foundation not ANSWER: โ- 26 B 1312.3. less than _____.(A) 24'' x 24'' (C) 20'' x 20''(B) 24'' x 18'' (D) none of the above ANSWER: โ- 27 C 507.2. ... ANSWER: โ- 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 ANSWER: โ- 29 C 701. ... ANSWER: โ- Exxeption (1) The clearance above the top of a casing or appliance for an unlisted upflow furnace is _____ inches.(A) 12 (C) 8(B) 6 (D) 24 ANSWER: โ- 30 D 1129.
... ANSWER: โ- 31 D 701.2.
When required clearance from the lowest portion of a floor furnace to the ground cannot be obtained, the ANSWER: โ- 32 B 602. Ex (1) ground below and to the sides shall be excavated to form a _____ pit under the furnace.(A) rectangular (C) 45-degree sloped(B) rounded (D) basin-like. ANSWER: โ- 33 C 802.5.5. ... ANSWER: โ- 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 ANSWER: โ- 35 D 205.
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 ANSWER: โ- 41 D
... ANSWER: โ- 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. ANSWER: โ- 43 B 1313. ... ANSWER: โ- 44 C 309. Wall-type room heaters shall not be attached to walls of combustible material unless _____.(A) approved by Authority Having Jurisdiction(B) opening lined with non-combustible material(C) listed
for such installations(D) approved by the fire marshal ANSWER: โ- 45 D 904.2(E) ... ANSWER: โ- 46 B 903.5, An unlisted pool heater shall be installed with a minimum clearance of _____ inches on all sides and the rear.(A) 24 (C) 6(B) 18 (D) 12 ANSWER: โ- 904.7(C) ... ANSWER: โ- 47 C 924. 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 ANSWER: โ- 48 D 922.2(C) ... ANSWER: โ- 49 A 904.6(1)
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 ANSWER: โ- 54 C 1014. Hydronic copper tube joints installed under a building and in or under a concrete slab shall be _____. ANSWER: โ- 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 ANSWER: โ- 56 B 904.10. ... ANSWER: โ- 57 A 1007. All boilers, tanks, and equipment shall be securely anchored to _____.(A) the floor (C) the structure(B) a frame (D) a base. ANSWER: โ- 58 D 604. ... ANSWER: โ- 59 B 502.
Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff ANSWER: โ- 60 C 307. valve or a listed gas convenience outlet installed within _____ of the equipment it serves.(A) 3 feet (C) 6 feet(B) 18 inches (D) 4 feet ANSWER: โ- 61 D 506.9. Equipment on roofs of buildings more than 15 feet in height shall have _____, unless other means ANSWER: โ- 62 B 604. 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 ANSWER: โ- 63 A 510.8.2(B) ... ANSWER: โ- 64 B 604.
(A) be removed (C) comply with the Fire Code(B) be elevated 4 feet (D) have automatic controls ANSWER: โ- 70 B 510.3. Exhaust outlets for ducts conveying explosive or flammable vapors, fumes, or dust shall terminate outside ANSWER: โ- 71 A 504.3. the building and not closer to any property line than _____ feet. ANSWER: โ- 72 C 517.4. (A) 6 (C) 20(C) 10 (D) 30 ANSWER: โ- 73 C 508.4. Factory-made air ducts shall not be used for vertical risers serving more than _____.(A) one story (C) three stories(B) two stories (D) occupancy ANSWER: โ- 74 B 509.2.4. The exhaust outlet for ducts serving commercial food heat- processing equipment terminating above the ANSWER: โ- 75 B
roof shall have the exhaust flow directed up and away from the roof surface and a minimum of _____ above the roof surface.(A) 40 inches (C) 18 feet(B) 3 feet (D) 2 feet ANSWER: โ- 76 A 609.0 Ex. 2 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 ANSWER: โ- 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 ANSWER: โ- 78 D 1109. aggregate input rating of all fuel-burning appliances installed in that space.(A) 20 (C) 100(B) 50 (D) 200 ANSWER: โ- 79 A 701.3.1(1) Commercial clothes dryers' exhaust ducts shall _____. ANSWER: โ- 80 C 405.
Exhaust fans with ductwork connected to both sides shall have access for cleaning and inspection within ANSWER: โ- 85 B 802.10. _____ of each side of the fan.(A) 1 foot (C) 5 feet(B) 3 feet (D) 6 feet ANSWER: โ- 86 D 504. When a closet is designed for the installation of a clothes dryer, a minimum opening of _____ square inches for makeup air shall be provided.(A) 100 (C) 175(B) 150 (D) 200 ANSWER: โ- 87 B 803.2. Wall terminations of solid-fuel exhaust systems shall be _____.(A) 12 foot above grade (C) prohibited(B) permitted (D) screened ANSWER: โ- 88 C 405. For canopy-type commercial cooking hoods, the inside edge thereof shall overhang or extend a horizontal ANSWER: โ- 89 B 405.
distance beyond the edge of the cooking surface not less than _____ inch(es).(A) 1 (C) 6(B) 3 (D) 12 ANSWER: โ- 90 C 1312.1.2(A) Greases filters shall be installed at an angle of not less than _____ degrees from the horizontal.(A) 30 (C) 60(B) 45 (D) 90. ANSWER: โ- 91 C 802. All clothes dryers installed for multiple-family or public use shall be equipped with _____.(A) approved backflow prevention devices (C) approved lint screens(B) approved safety shutoff devices (D) Type II hood. ANSWER: โ- 92 C 927.2(A)(2) Automatic shutoff is not required when all occupied rooms served by the air-handling equipment have direct exit to the exterior and the travel distance does not exceed _____ feet.(A) 100 (C) 75(B) 50 (D)
- ANSWER: โ- 93 C 405.
