RAPHEX FINAL EXAM SCRIPT 2026 COMPLETE
QUESTIONS AND SOLUTIONS
◉The total energy produced by burning one pound of wood is
approximately____________ . Answer: 8,600 BTUs
◉Catalytic converters can lower the ignition temperature of wood
smoke to approximately . Answer: 500 degrees
◉The proper UL Standard for chimneys used to vent wood stoves is .
Answer: UL103HT
◉UL103HT . Answer: These requirements cover factory-built
chimneys intended for venting gas, liquid, and solid-fuel fired
residential-type appliances and building heating appliances
◉According to NFPA 211, the maximum horizontal run of a wood stove
connector is limited to ______________ percent of the vertical portion
of the chimney above the connector. . Answer: 50%
, ◉According to NFPA 211, a manual damper installed in a wood stove
connector pipe cannot block more than ___________ percent of the
connector when fully closed. . Answer: 80%
◉According to NFPA 211, the maximum permitted chimney flue area is
______ times the appliance flue collar area for exterior chimneys and
____ times the appliance flue collar area for interior chimneys. .
Answer: 2 and 3
◉The maximum chimney offset angle permitted in the United States is
__________ degrees (from vertical). . Answer: 30 degrees
◉According to NFPA 211 and the IRC, a 3.5" brick wall with a 1"
ventilated air space provides a __________ percent clearance reduction
. Answer: 66%
◉According to NFPA 211 and the IRC, a 3.5" brick wall without
ventilated air space provides a __________ percent clearance reduction.
. Answer: 33%
◉According to NFPA 211 and the IRC, a 24 gauge sheet metal panel
with a 1" ventilated air space provides a __________ percent clearance
reduction when used as a ceiling protector. . Answer: 50%
QUESTIONS AND SOLUTIONS
◉The total energy produced by burning one pound of wood is
approximately____________ . Answer: 8,600 BTUs
◉Catalytic converters can lower the ignition temperature of wood
smoke to approximately . Answer: 500 degrees
◉The proper UL Standard for chimneys used to vent wood stoves is .
Answer: UL103HT
◉UL103HT . Answer: These requirements cover factory-built
chimneys intended for venting gas, liquid, and solid-fuel fired
residential-type appliances and building heating appliances
◉According to NFPA 211, the maximum horizontal run of a wood stove
connector is limited to ______________ percent of the vertical portion
of the chimney above the connector. . Answer: 50%
, ◉According to NFPA 211, a manual damper installed in a wood stove
connector pipe cannot block more than ___________ percent of the
connector when fully closed. . Answer: 80%
◉According to NFPA 211, the maximum permitted chimney flue area is
______ times the appliance flue collar area for exterior chimneys and
____ times the appliance flue collar area for interior chimneys. .
Answer: 2 and 3
◉The maximum chimney offset angle permitted in the United States is
__________ degrees (from vertical). . Answer: 30 degrees
◉According to NFPA 211 and the IRC, a 3.5" brick wall with a 1"
ventilated air space provides a __________ percent clearance reduction
. Answer: 66%
◉According to NFPA 211 and the IRC, a 3.5" brick wall without
ventilated air space provides a __________ percent clearance reduction.
. Answer: 33%
◉According to NFPA 211 and the IRC, a 24 gauge sheet metal panel
with a 1" ventilated air space provides a __________ percent clearance
reduction when used as a ceiling protector. . Answer: 50%
