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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".
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.
C. leaks in a gas piping shall be located with a non corrosive leak detecting fluid. UMC Section 1316.4.2
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 309.1
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) 80,000 (C) 140,000(B) 100,000 (D) 320,000
31 D. 701.2.1
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.
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
C. appliances shall not UMC Section 802.5.5.1
Any joint obtained by joining of metal parts with alloys that melt at temperatures higher than 840°F, but lowerthan the melting temperature of the parts to be joined, is a _____ joint.(A) brazed(B) fused (D) soldered (C) welded
A. Is a brazed joint UMC section 2 1 2.0
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
D. A condenser is the piping which vaporizes the refrigerant liquefied by removal of heat, UMC Section 2 0 5.0
is a _____.(A) compressor (C) evaporator(B) generator (D) condenser
18 D 502.0
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 1316.4.3
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 1106.2
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 802.6.1.1
Listed transition ducts f or clothes dryers shall not exceed_____ feet in length. A.3 B.4 C.5 D.6.
D. Dryers shall not exceed 6 feet in length. UMC Section 504.3.2.1
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 6.1
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
A 511.2
An appliance designed primarily to supply hot water equipped with automatic controls limiting water
20 B 1201.2.1.8
temperature to a maximum of 210°F is a _____.(A) water heater (C) expansion tank(B) steam boiler (D) gas heater.
21 A 507.1.3
The maximum horizontal length of a single-wall connector shall be ____ percent of the height of the chimney or vent.
75%
Grease filters shall be installed at an angle of not less that ____ degrees from the horizontal and shall be equipped with a drip tray beneath the lower edge of the filters
45
A device that will automatically shut off the fuel supply to a main burner or group of burners when the means of ignition of such burners become inoperative, and when flame failure occurs on the burner or group of burners.
Flame Safeguard
Fire dampers shall not be installed in.
Exhaust ducts.
Metallic ducts not having an approved protective coating shall be completely encased in a minimum of ___ inches of concrete
2 inches
An appliance that operates with a nonpositive vent static pressure and with a vent gas temperature that is capable of causing excessive condensate production in the vent.
Category 2
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