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Hvac Journeyman Exam Questions With
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Defects on gas piping or fittings shall be _____.(A) repaired(B) replaced or repaired andretested(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. UMCSection 1316.4. Every absorption refrigerating system supported from the ground shall rest on a concreteslab 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 lessthan 3" above the adjoining ground level. UMC Section 1106. Any part of a venting system installed at an angle greater than 45 degrees from thevertical 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 45degrees 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.4C.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 orsolid 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. UMCSection. 5 0 6. Industrial product-conveying ducts and their fittings for abrasive and nonabrasive dust orsolid 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 lessthan _____ 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 Section908.2(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 locatedwith 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 1B.¼" C.½" D. 1" - Answer A. Slope of not less than 1/8" per foot. UMC Section 309.1 ⁄ 8"
The minimum gauge or size steel wire used to support horizontal metal ducts 10 inchesor 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 beinstalled 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 supplyduct. - 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 withoutcombustion air openingsis _____ Btu.(A) 80,000 (C) 140,000(B) 100,000 (D) 320,000 - Answer 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 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 higherthan 840°F, 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 UMCsection 2 1 2.
A vessel or arrangement of piping or tubing in which vaporized refrigerant is liquefied byremoval 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 removalof 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 cannotbe obtained, the - Answer 32 B 602.2 Ex (1)
ground below and to the sides shall be excavated to form a _____ pit under thefurnace.(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 windconditions (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 becollected and - Answer 39 C 304.1.2,
discharged to a(an) _____.(A) public way (C) approved plumbing fixture or disposalarea(B) plumbing fixture (D) storm sewer. - Answer 904.10.
... - Answer 40 B Table 3- Front clearance to a furnace or boiler shall be _____.(A) minimum 6 inches tocombustibles(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 41D 912.
... - Answer 42 A 912. Where a furnace plenum is not supplied with the furnace, the fabrication and installationshall _____.(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 onall sides and the rear.(A) 24 (C) 6(B) 18 (D) 12 - Answer 904.7(C)
... - Answer 47 C 924.
All boilers, tanks, and equipment shall be securely anchored to _____.(A) the floor (C) thestructure(B) a frame (D) a base. - Answer 58 D 604.
... - Answer 59 B 502. Gas utilization equipment connected to a piping system shall have an accessible,approved manual shutoff - Answer 60 C 307.
valve or a listed gas convenience outlet installed within _____ of the equipment itserves.(A) 3 feet (C) 6 feet(B) 18 inches (D) 4 feet - Answer 61 D 506.9.
Equipment on roofs of buildings more than 15 feet in height shall have _____, unlessother means - Answer 62 B 604.
acceptable to the Authority Having Jurisdiction is used.(A) a permanent outside ladderfixed 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 ofaccess 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 valveinstalled _____. - Answer 65 B 205.
(A) upstream of all control devices(B) downstream of all control devices(C) eitherupstream 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) encasedin at least 2 inches of sand(B) protected from damage (D) encased in at least 2 inches of concrete - Answer 67 D 503.
roof shall have the exhaust flow directed up and away from the roof surface and aminimum of _____ above the roof surface.(A) 40 inches (C) 18 feet(B) 3 feet (D) 2 feet -
- is a _____.(A) compressor (C) evaporator(B) generator (D) condenser - Answer 18 D 502.
- An appliance designed primarily to supply hot water equipped with automatic controlslimiting water - Answer 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. - Answer 21 A 507.1.
- A cooling coil is to be installed in a duct system containing an existing furnace heatexchanger. Unless - Answer 23 C 907.
- otherwise listed, the code requires that the air flows first through _____.(A) the heatexchanger (C) a diverter unit(B) the cooling coil (D) a bypass duct - Answer 24 C 903.
- The space in which any floor furnace is installed shall be accessible by an opening in thefoundation not - Answer 26 B 1312.3.
- less than _____.(A) 24'' x 24'' (C) 20'' x 20''(B) 24'' x 18'' (D) none of the above - Answer 27C 507.2.
- Buildings of more than _____ feet in height shall have an inside means of access to theroof.(A) 14 (C) 15 (B) 16 (D) 20 - Answer 29 C 701.
- 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 orprocessed shall _____. - Answer 69 C 203.
- (A) be removed (C) comply with the Fire Code(B) be elevated 4 feet (D) have automaticcontrols - Answer 70 B 510.3.
- Exhaust outlets for ducts conveying explosive or flammable vapors, fumes, or dust shallterminate 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 equipmentterminating above the - Answer 75 B 905.
- Answer 76 A 609.0 Ex.
- Metal ducts shall be securely fastened in place at _____.(A) 6 foot intervals (C) 10 footintervals(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,
prohibited(B) permitted (D) screened - Answer 88 C 405. For canopy-type commercial cooking hoods, the inside edge thereof shall overhang orextend a horizontal - Answer 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 90 C 1312.1.2(A)
Greases filters shall be installed at an angle of not less than _____ degrees from thehorizontal.(A) 30 (C) 60(B) 45 (D) 90. - Answer 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 92 C 927.2(A)(2) Automatic shutoff is not required when all occupied rooms served by the air-handlingequipment have direct exit to the exterior and the travel distance does not exceed _____ feet.(A) 100 (C) 75(B) 50 (D) 150. - Answer 93 C 405. 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- 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 buildingshall 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) 5,000 - Answer 97 D 405.
Every evaporative cooler supported on an aboveground platform shall be elevated fromthe ground by at - Answer 98 B 308.
least _____ the adjoining ground level.(A) 3 inches below (C) 6 inches above(B) 3 inchesabove (D) 6 inches below. - Answer 99 C 803.1.
Motorized louvers shall be _____ with the equipment so they are proven in the full openposition 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 inaccordance 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 _____ inch perfoot.(A) 1 ⁄ 8 (C) 1 ⁄ 2 (B) 1 ⁄ 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 ...
The minimum gauge steel duct that can be used in a residence where the duct size is lessthan 14 inches - Answer ...
in diameter is _____.(A) 24 (C) 28(B) 26 (D) 30. - Answer ... When installing an evaporative cooler, openings in exterior walls shall be _____.(A) 1 inchlarger than the duct (C) 3 inches larger than the duct(B) flashed in an approved manner (D) the same size as the duct ._____ vent connectors shall not be smaller than the listedappliance categorized vent diameter, flue collar diameter, or draft hood outlet diameter.(A) Single wall (C) Listed(B) Type B (D) Corrugated. - Answer ... Modifications made to the supporting framework of buildings as a results of theinstallation of an evaporative cooler shall be in accordance with the _____ Code.(A) Mechanical (C) Fire(B) ASME (D) Building. - Answer ... A positive means of disconnect is required for electrical connections of more than _____volts.(A) 25 (C) 120 (B) 50 (D) 240. - Answer ...
Vent connectors shall not be upsized more than _____ sizes greater than the listedappliance categorized vent diameter, flue collar diameter, or draft hood outlet diameter.(A) three (C) two(B) four (D) seven - Answer ... Refrigeration systems shall be operated and maintained as required by the _____Code.(A) Building (C) Uniform Mechanical(B) Fire (D) Life Safety. - Answer ...
