CSIA 105 CERTIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS 2026
▶ a pipe that passes through a wall, goes up the wall, to a slanted cap, is
called?? Answer:snorkel vent
▶ weekly maintenance for a pellet stove includes...? Answer:1. Examine /
clean heat exchanger tubes
2. clean the fire pot (as needed)
3. clean door glass (as needed)
4. clean ash trap (as needed)
▶ If elbow comes apart during service, it must...? Answer:be replaced
▶ soot or creosote of what thickness should be removed from the chimney
and connector?? Answer:1/8"
▶ oil soot is often _______ than typical wood burning creosote??
Answer:lighter - in color and by weight
▶ masonry chimney deterioration just below the roofline indicates what??
Answer:leaking flashing
▶ stack control is the...? Answer:primary safety switch
▶ stack control can be reset by...? Answer:drawing out the lever 1/4" to
align contacts and releasing slowly
▶ newer oil fired appliances use what as the stack control?? Answer:photo
sensitive cad cell relay
▶ what is an appliance data plate? Answer:reference used to determine
the proper category for an appliance
, ▶ what are catalytic combustors? Answer:designed to increase combustion
efficiency of the appliance by lowering the ignition temperature of flue gas
passing through
▶ what is combustion efficiency? Answer:% of potential energy converted
to useful heat in the fire chamber of the appliance
▶ what contributes to the greatest combustion efficiency?? Answer:Time,
Temperature, Turbulence
takes 1100 degrees to get complete combustion of wood fuel
▶ sulfuric acid is formed by...? Answer:coal mixed with water
▶ ideal moisture content of wood? Answer:15% - 25%
▶ dry wood amount of BTUs?? Answer:dry wood = 8600 BTUs / lb
more moisture = lower BTUs
▶ oil produces how many BTUs per gallon?? Answer:140,000 BTUs /
gallon
▶ liquid propane produces how many BTUs per ft3? Answer:2500 BTUs /
ft3
▶ BTUs from natural gas? Answer:Natural gas = 1000 BTUs
▶ height of chimney beyond roof?? Answer:2 feet above the ridge,
measuring from top of chimney
▶ what is a B vent pipe? Answer:1. double wall and aluminum inner liner
2. for gas appliances, listed for B with draft hood
▶ what is a BW vent? Answer:1. oval, designed to fit in studded wall cavity
2. originally listed for gas wall furnace
▶ What are single wall connectors known as? Give measurements??
Answer:1. known as the "breech"
2. 6-10" diameter, minimum 24 guage steel
AND VERIFIED ANSWERS 2026
▶ a pipe that passes through a wall, goes up the wall, to a slanted cap, is
called?? Answer:snorkel vent
▶ weekly maintenance for a pellet stove includes...? Answer:1. Examine /
clean heat exchanger tubes
2. clean the fire pot (as needed)
3. clean door glass (as needed)
4. clean ash trap (as needed)
▶ If elbow comes apart during service, it must...? Answer:be replaced
▶ soot or creosote of what thickness should be removed from the chimney
and connector?? Answer:1/8"
▶ oil soot is often _______ than typical wood burning creosote??
Answer:lighter - in color and by weight
▶ masonry chimney deterioration just below the roofline indicates what??
Answer:leaking flashing
▶ stack control is the...? Answer:primary safety switch
▶ stack control can be reset by...? Answer:drawing out the lever 1/4" to
align contacts and releasing slowly
▶ newer oil fired appliances use what as the stack control?? Answer:photo
sensitive cad cell relay
▶ what is an appliance data plate? Answer:reference used to determine
the proper category for an appliance
, ▶ what are catalytic combustors? Answer:designed to increase combustion
efficiency of the appliance by lowering the ignition temperature of flue gas
passing through
▶ what is combustion efficiency? Answer:% of potential energy converted
to useful heat in the fire chamber of the appliance
▶ what contributes to the greatest combustion efficiency?? Answer:Time,
Temperature, Turbulence
takes 1100 degrees to get complete combustion of wood fuel
▶ sulfuric acid is formed by...? Answer:coal mixed with water
▶ ideal moisture content of wood? Answer:15% - 25%
▶ dry wood amount of BTUs?? Answer:dry wood = 8600 BTUs / lb
more moisture = lower BTUs
▶ oil produces how many BTUs per gallon?? Answer:140,000 BTUs /
gallon
▶ liquid propane produces how many BTUs per ft3? Answer:2500 BTUs /
ft3
▶ BTUs from natural gas? Answer:Natural gas = 1000 BTUs
▶ height of chimney beyond roof?? Answer:2 feet above the ridge,
measuring from top of chimney
▶ what is a B vent pipe? Answer:1. double wall and aluminum inner liner
2. for gas appliances, listed for B with draft hood
▶ what is a BW vent? Answer:1. oval, designed to fit in studded wall cavity
2. originally listed for gas wall furnace
▶ What are single wall connectors known as? Give measurements??
Answer:1. known as the "breech"
2. 6-10" diameter, minimum 24 guage steel
