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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 inthe 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 airopeningsis _____ 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 extendingnot 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 groundlevel. UMC Section 1106.
Any part of a venting system installed at an angle greater than 45 degrees from the vertical is consideredby 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 HorizontalUMC 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 materialsshall 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 materialsshall 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 anoncorrosive 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 detectingfluid. 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"answer>>>A. Slope of not less than 1/8" per foot. UMC Section 309.1 -
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 840°F, butlowerthan 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 ofheat 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) plumbingfixture (D) storm sewer. - answer>>>904.10.
... - answer>>>40 B Table 3- Front clearance to a furnace or boiler shall be _____.(A) minimum 6 inches to combustibles(B) minimum6 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 therear.(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 theroof (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
acceptable to the Authority Having Jurisdiction is used.(A) a permanent outside ladder fixed to thebuilding for roof access(B) an inside means of access to the roof(C) permanent inside or outside means
- 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 controls limiting 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 heat exchanger. Unless -answer>>>23 C 907.
- otherwise listed, the code requires that the air flows first through _____.(A) the heat exchanger (C) adiverter 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 the foundation 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>>>27 C 507.2.
- 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>>>29 C 701.
- centers(D) 1 inch x 1 ⁄8 inch metal strap, 8 feet on centers - answer>>>51 B 405.
- answer>>>52 A 903. Evaporative coolers shall be accessible for inspection, service, and replacement without removing_____. (A) electrical panels (C) access doors(B) permanent construction (D) smoke detectors -
- Air-conditioning equipment shall have a means for interrupting the electrical supply within _____ from -answer>>>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 ofand not more than 25 feet (D) the same story and not more than 25 feet - answer>>>54 C 1014.
- Hydronic copper tube joints installed under a building and in or under a concrete slab shall be _____. -answer>>>55 C 1313.
- (A) brazed(B) soldered, with 95 percent tin and 5 percent antimony solder(C) soldered, with 50 percenttin and 50 percent lead solder(D) silver brazed or equal - answer>>>56 B 904.10.
- All boilers, tanks, and equipment shall be securely anchored to _____.(A) the floor (C) the structure(B) aframe (D) a base. - answer>>>58 D 604.
- Gas utilization equipment connected to a piping system shall have an accessible, approved manualshutoff - answer>>>60 C 307.
- valve or a listed gas convenience outlet installed within _____ of the equipment it serves.(A) 3 feet (C) 6feet(B) 18 inches (D) 4 feet - answer>>>61 D 506.9.
- Equipment on roofs of buildings more than 15 feet in height shall have _____, unless other means -answer>>>62 B 604.
- answer>>>64 B 604. of access to the roof(D) a portable ladder means of access to the roof - answer>>>63 A 510.8.2(B)
- 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 ordownstream 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 2inches 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 terminateoutside - 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) eachchange 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 lengthincluding 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 350°F or higher. - answer>>>82 B 604.
Ducts for exhausting clothes dryers shall not be put together with _____.(A) draw bands (C) metalscrews(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 requiredby 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) UniformMechanical (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) 5,000- answer>>>97 D 405.
Every evaporative cooler supported on an aboveground platform shall be elevated from the ground byat - answer>>>98 B 308.
least _____ the adjoining ground level.(A) 3 inches below (C) 6 inches above(B) 3 inches above (D) 6inches below. - answer>>>99 C 803.1.
Motorized louvers shall be _____ with the equipment so they are proven in the full open position tomain - 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 withthe - 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) sheetmetal screws(B) solder joints (D) welded joints. - answer>>>...
Vent connectors shall be pitched upward from the appliance at least _____ inch per foot.(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 fromopenings 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 inchesabove(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>>>...
