COMPTIA CYSA+ EXAM QUESTIONS AND
SOLUTIONS UPDATED 2025
◉Definition of Draft . Ans: Difference of pressure INSIDE and
OUTSIDE the venting system
◉Easiest solution to "back puffing" stove? . Ans: Give it more air
◉What has the greatest effect on FLOW? . Ans: Size of venting system
passageway
◉A masonry chimney is required by what to have a cleanout if the flue
previously vented a solid or liquid fuel appliance? . Ans: NFPA 54
(National Fuel Gas Code)
◉High efficiency gas + oil appliances generate a lot of____ which
can____ . Ans: water vapor, deteriorate a chimney quickly
◉Info on use and installation of gas appliance draft hoods can be found
where? . Ans: National Fuel Gas Code
◉Category II, III, and IV appliance venting requirements can be found...
. Ans: in the installation instructions
,◉Glazed creosote results from 3 things... . Ans: slow smoldering fire,
too many elbows,
improperly sized vent
◉What is "pyrolysis"? . Ans: The chemical alteration of wood as a result
of the application of heat
◉Perfect combustion results in: . Ans: Only Co2 and water vapor
◉Creosote formation: . Ans: Tar fog or droplets of liquids condense in
the venting system
◉Residence time . Ans: length of time smoke remains in the chimney
◉Magnetic thermometers only display about __% of actual flue temp .
Ans: 50%
◉Creosote should be removed because... . Ans: Fire risk,
corrosive to steel, connectors, and mortar
◉Why should flashing be embedded in mortar? . Ans: prevent leaks
, ◉Baffle location and purpose? . Ans: Located between the firebox and
flue collar.
Purpose is to complete better combustion
◉What does the barometric draft regulator do? . Ans: Prevents excessive
draft
◉Smoke chamber height SHALL NOT be greater than the ______
______ of the fireplace fire chamber. . Ans: Inside width
◉Combustion needs... . Ans: Heat, Oxygen, and Fuel
◉Nominal dimensions can vary by how much? . Ans: Nominal
dimensions vary by 1/2"
◉What is combustion? . Ans: The rapid oxidation of fuel producing heat
and light.
◉Parging the smoke chamber improves FLOW by... . Ans: Reducing
turbulence, and eliminating corbeling
◉Connector dampers should not block greater than ___% of the
connector when closed. . Ans: 80%
SOLUTIONS UPDATED 2025
◉Definition of Draft . Ans: Difference of pressure INSIDE and
OUTSIDE the venting system
◉Easiest solution to "back puffing" stove? . Ans: Give it more air
◉What has the greatest effect on FLOW? . Ans: Size of venting system
passageway
◉A masonry chimney is required by what to have a cleanout if the flue
previously vented a solid or liquid fuel appliance? . Ans: NFPA 54
(National Fuel Gas Code)
◉High efficiency gas + oil appliances generate a lot of____ which
can____ . Ans: water vapor, deteriorate a chimney quickly
◉Info on use and installation of gas appliance draft hoods can be found
where? . Ans: National Fuel Gas Code
◉Category II, III, and IV appliance venting requirements can be found...
. Ans: in the installation instructions
,◉Glazed creosote results from 3 things... . Ans: slow smoldering fire,
too many elbows,
improperly sized vent
◉What is "pyrolysis"? . Ans: The chemical alteration of wood as a result
of the application of heat
◉Perfect combustion results in: . Ans: Only Co2 and water vapor
◉Creosote formation: . Ans: Tar fog or droplets of liquids condense in
the venting system
◉Residence time . Ans: length of time smoke remains in the chimney
◉Magnetic thermometers only display about __% of actual flue temp .
Ans: 50%
◉Creosote should be removed because... . Ans: Fire risk,
corrosive to steel, connectors, and mortar
◉Why should flashing be embedded in mortar? . Ans: prevent leaks
, ◉Baffle location and purpose? . Ans: Located between the firebox and
flue collar.
Purpose is to complete better combustion
◉What does the barometric draft regulator do? . Ans: Prevents excessive
draft
◉Smoke chamber height SHALL NOT be greater than the ______
______ of the fireplace fire chamber. . Ans: Inside width
◉Combustion needs... . Ans: Heat, Oxygen, and Fuel
◉Nominal dimensions can vary by how much? . Ans: Nominal
dimensions vary by 1/2"
◉What is combustion? . Ans: The rapid oxidation of fuel producing heat
and light.
◉Parging the smoke chamber improves FLOW by... . Ans: Reducing
turbulence, and eliminating corbeling
◉Connector dampers should not block greater than ___% of the
connector when closed. . Ans: 80%
