Exam (elaborations)
IFGC EXAM QUESTIONS AND 100% CORRECT ANSWERS
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IFGC EXAM QUESTIONS AND 100%CORRECT ANSWERS
fall restraint - ANSWER Guards are not required for rooftop appliances requiring service
where approved permanent __________________ devices are installed
oxygen-depletion-sensitive - ANSWER Unvented room heaters shall be equipped with an
_________________________________ safety shutoff system
polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) - ANSWER
____________________________________ and _____________________________________ plastic
pipe, tubing and fittings shall not be used to supply fuel gas
100, 20 - ANSWER Self-service LP-gas motor vehicle dispensing systems shall be
provided with an emergency shutoff switch located within ____ feet of, but not less than
___ feet from, dispensers
1,800 - ANSWER Masonry chimneys shall be lines with approved clay flue lining, a listed
chimney lining system or other approved materials that will resist corrosion, erosion,
softening or cracking from vent gases at temperatures up to ____ F.
6 - ANSWER Where residential compressed natural gas (CNG) fueling appliances are
located indoors, a gas detector shall be located within __ inches of the highest point of
the room or space
6 - ANSWER The lowest portion of the floor furnace shall have not less than a _____ inch
clearance from the grade level
outside - ANSWER The controls, combustion air inlets and draft hoods for duct furnaces
shall be located _____ of the ducts
,A, E, I - ANSWER Unvented room heaters shall not be installed within occupancies in
Groups __, __, and __
positive - ANSWER Duct furnaces shall be installed on the _________ pressure side of the
circulating air blower
sleeping - ANSWER nonrecirculating direct-fired industrial air heaters shall not be used
to supply any area containing ________ quarters.
32 - ANSWER Uninsulated single-wall metal pipe shall not be used outdoors for venting
appliances where the 99-percent winter design temperature is below ____ F
18, 12, 6 - ANSWER Suspended-type unit heaters shall be installed with clearances to
combustible materials of not less than __ inches at the sides, ___ inches at the bottom
and ___ inches above the top where the unit heater has an internal draft hood
rigidly - ANSWER To protect against the effects of normal vibration, gas engines for
air-conditioning appliances shall not be _________ connected to the gas supply piping
4 - ANSWER For outdoors locations, the maximum rated output capacity of hydrogen
generating appliances shall not exceed __ standard cubic feet per minute of hydrogen
for each 250 square feet of floor area
75 - ANSWER The maximum horizontal length of a single-wall vent connector shall be
____ percent of the height of the chimney or vent except for the engineered systems
3, schedule 40 - ANSWER For supporting illuminating appliances, the strength and
rigidity of posts greater than ___ feet in height shall be at least equivalent to that of a 2.5
inch-diameter post constructed of 0.064 inch-thick steel or a 1 inch _____________ steel
pipe
, 250 - ANSWER Hydrogen gas cylinders for indoor storage and use in occupancies
regulated by the International Residential Code shall not exceed ___ cubic feet at normal
temperature and pressure (NTP)
40,000 - ANSWER Unvented room heaters shall not have an input rating in excess of ___
Btu/h
200 - ANSWER Clothes dryer installations exhausting more than ___ cfm shall be
provided with makeup air
sheet metal - ANSWER Dryer ducts shall not be connected or installed with ___________
screws or other fasteners that will obstruct the flow
backdraft - ANSWER Exhaust ducts for clothes dryers shall terminate on the outside of
the building and shall be equipped with a damper
4 - ANSWER Recirculating direct-fired industrial air heaters shall incorporate a means
to supply outside ventilation air to the space at a rate of not less than ____ cubic feet per
minute per 1,000 Btu per hour of rated input of the heater
full open position - ANSWER Motorized dampers or closable louvers for nonrecirculating
direct-fired industrial air heaters shall be permitted to be used, provided they are
verified to be in their ________________ prior to main burner operation
8 - ANSWER The maximum spacing between hangers supporting 3/4 inch steel gas
piping is ___ feet
5 - ANSWER Residential CNG fueling appliances shall be listed. The capacity of a
residential fueling appliance shall not exceed ___ standard cubic feet per minute of
natural gas
Adjacent - ANSWER a yellow insulated copper trace wire or other approved conductor
shall be installed ________ to underground nonmetallic gas piping
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