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Hvac Journeyman EXAM Accurate Real Exam
Questions and Verified Correct Answers
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 - answer>>>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. - answer>>>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>>>31 D. 701.2. 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>>>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>>>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 - answer>>>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>>>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>>>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>>>A 511. 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". - answer>>>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. - answer>>>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 1โ8" B.ยผ" C.ยฝ" D. 1" - answer>>>A. Slope of not less than 1/8" per foot. UMC Section 309. 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>>>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>>>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>>>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>>>D. A condenser is the piping which vaporizes the refrigerant liquefied by removal of heat, UMC Section 2 0 5.
... - answer>>>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>>>30 D 1129. ... - answer>>>31 D 701.2. When required clearance from the lowest portion of a floor furnace to the ground cannot be obtained, the - answer>>>32 B 602.2 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>>>33 C 802.5.5. ... - answer>>>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>>>35 D 205. ... - answer>>>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. - answer>>>37 A 911.6(B) ... - answer>>>38 B 912. Condensate from air-cooling coils and the overflow from evaporative coolers shall be collected and - answer>>>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. - answer>>>904.10.
... - answer>>>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 - answer>>>41 D 912. ... - answer>>>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>>>43 B 1313. ... - answer>>>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>>>45 D 904.2(E) ... - answer>>>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>>>904.7(C) ... - answer>>>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>>>48 D 922.2(C) ... - answer>>>49 A 904.6(1) Support of round horizontal ducts 10 inch diameter and less requires. - answer>>>50 A Table 6 - 7B
Equipment on roofs of buildings more than 15 feet in height shall have , unless other means - answer>>>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>>>63 A 510.8.2(B) ... - answer>>>64 B 604. The main burner of a gas fired boiler shall have an approved manual shutoff valve installed. - answer>>>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 - answer>>>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 - answer>>>67 D
A flammable vapor or fume exceeds percent of its lower flammability limit (LFL).(A) 10 (C) 50(B) 25 (D) 75 - answer>>>68 C 504.3. Heating equipment located in rooms where cellulose nitrate plastic is stored or processed shall. - answer>>>69 C 203. (A) be removed (C) comply with the Fire Code(B) be elevated 4 feet (D) have automatic controls - answer>>>70 B 510.3. Exhaust outlets for ducts conveying explosive or flammable vapors, fumes, or dust shall terminate outside - answer>>>71 A 504.3. the building and not closer to any property line than ______ feet. - answer>>>72 C 517.4.
(A) 6 (C) 20(C) 10 (D) 30 - answer>>>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>>>74 B 509.2.4. The exhaust outlet for ducts serving commercial food heat-processing equipment terminating above the
- answer>>>75 B 905. 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>>>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>>>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>>>78 D 1109. aggregate input rating of all fuel-burning appliances installed in that space.(A) 20 (C) 100(B) 50 (D) 200 - answer>>>79 A 701.3.1(1) Commercial clothes dryers' exhaust ducts shall _____. - answer>>>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 - answer>>>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 350ยฐF or higher. - answer>>>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. - answer>>>83 C 504.3.
Excess refrigerants may be stored. (A)in a securely fenced yard with a locked gate (C) as required by the Fire Code(B) in a mechanical room (D) in a machinery room - answer>>>94 D Table 6- 9 Electrical equipment shall be approved for the class of use as provided in the Code.(A) Uniform Mechanical (C) Building(B) Uniform Plumbing (D) Electrical. - answer>>>95 B 405. Appliances located in a confined space with all air taken from the inside of the building shall have each - answer>>>96 D 803.1. opening for combustion air sized at 1 square inch per _____ Btu/h.(A) 1,000 (C) 4,000(B) 2,000 (D) 5,
- answer>>>97 D 405. Every evaporative cooler supported on an aboveground platform shall be elevated from the ground by at - answer>>>98 B 308. least the adjoining ground level.(A) 3 inches below (C) 6 inches above(B) 3 inches above (D) 6 inches below. - answer>>>99 C 803.1. Motorized louvers shall be with the equipment so they are proven in the full open position to main - answer>>>100 B 1125. burner ignition and during main burner operation.(A) installed (C) listed(B) interlocked (D) shipped - answer>>>... The minimum distance from the ground to any metal duct shall not be less than inches.(A) 2 (C) 6(B) 4 (D) 12. - answer>>>... A commercial clothes dryer connected to a moisture exhaust duct shall be installed in accordance with the - answer>>>... instructions.(A) fire marshal's (C) manufacturer's(B) building official's (D) installer's. - answer>>>...
Vent connectors shall be securely supported, and joints fastened with .(A) duct tape (C) sheet metal screws(B) solder joints (D) welded joints. - answer>>>... Vent connectors shall be pitched upward from the appliance at least ______ nch per foot.(A) 1 โ 8 (C) 1 โ 2 (B) 1 โ 4 (D) 1. - answer>>>... Environmental air ducts shall terminate at least............ (A) 3 feet from the property line (C) 3 feet from openings in the building(B) 10 feet from the property line (D) A and C apply. - answer>>>... For each elbow greater than 45 degrees up to and including 90 degrees, the maximum common vent - answer>>>... capacity listed in the venting tables shall be reduced by percent.(A) 5 (C) 15(B) 10 (D) 20. - answer>>>... All air ducts and fire dampers that are a portion of an evaporative cooling system shall comply with the - answer>>>... requirements of............ (A) SMACNA (C) the Uniform Mechanical Code(B) ASHRAE (D) the Fire Code. - answer>>>... Every evaporative cooler supported directly by the ground shall be isolated from the ground by a level - answer>>>... concrete slab extending not less than the adjoining ground level.(A) 3 inches below (C) 6 inches above(B) 3 inches above (D) 6 inches below. - answer>>>... Underground gas piping systems shall be installed with a minimum cover of inches.(A) 6 (C) 18(B) 12 (D) 24. - answer>>>... A operated damper shall not be placed in any equipment vent connector.(A) automatically (C) manually(B) gear (D) air. - answer>>>...
