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74 Cards in this Set
- Front
- Back
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What is a heat exchanger? |
The chamber where heat from combustion is transferred to air or water |
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What is a vent used for |
Appliances listed for use with a vent |
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Where should hearth stoves be connected |
A properly constructed masonry fireplace |
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Where is a fireplace damper located |
Throat of a fireplace |
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What does a barometric draft regulator do |
Limits draft that pulls air into The appliance |
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How do wood stove connector pipes go together |
Mail or crimped ends facing down to prevent creosote leakage |
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What should you do once liner tiles are cracked |
Replace with new tiles or approved lining material or repaired with a listing it method |
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What is combustion |
Rapid oxidation of fuel producing heat and light |
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What 3 terms are required for combustion to take place |
Heat oxygen and fuel |
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What are the 3 t's for combustion efficiency |
Temperature time and turbulence |
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Woodburns in which 3 identifiable stages |
Drying pyrolysis and charcoal |
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What is the temperature to achieve complete combustion of a solid fuel |
1100ﾟ |
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Tard droplets or tarfag is a major component of what |
Smoke from smoldering wood |
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What is the length of time smoke for mains in the venting system |
Residence time |
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How do radiant heaters transfer heat |
Direct radiation |
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3 methods of heating |
Radiation convection and conduction |
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What elements are left from a perfect combustion |
CO2 , water and heat |
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So chemical alteration of wood is a result of |
Pyrolysis |
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What is caused by mortar joints projecting inside the flu that can create more rapid build-up of creosote reduce draft and slow the smoke |
Turbulence |
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Where is a heat reclaimer or extract are located |
In connector pipes |
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BTU of pellets |
8200 |
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Vaporizing moisture in would fuel during combustion process can consume how much of the total available energy |
5 to 15 percent |
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Stage of combustion most critical and the generation of creosote |
Pyrolysis |
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Where are baffle located |
Combustion chamber and stove outlet |
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How are chimneys different than vents |
Ventemay only be used for appliances that are listed for use with a vent |
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A furnace blower will create what pressure around the combustion chamber and heat exchanger |
Positive |
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Minimum amount per foot a horizontal connector must rise |
1/4" |
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What is the most difficult brush to reverse in a flu |
Flat |
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Why should you use polypropylene brushes to sweep oil flues |
Because they are not corrosive |
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2 types of filters for a respirator |
Charcoal and dust |
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What represents the greatest risk when using an aluminum ladder |
Electrical shock |
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Best shoes for walking on a roof |
Soft crepe or gum soles |
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3 types of roofs that are fragile and break easily |
Slate Cedar and tile |
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Illness from exposure to soot and creosote are related to what 2 things |
Quantity and length |
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What is made up of water and sulfer |
Sulfuric acid |
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What kind of deposits are found in flues serving gas and oil |
Sulfur deposits |
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What do chimney fires leave behind |
A variety of creosote deposits |
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How should unused thimbles be permanently sealed |
Brick and mortar |
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What do high efficiency gas and oil fired appliances generate |
A great deal of water vapor |
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Chimney fires crack the clay flue lining because of what |
Thermal shock |
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All chimneys should be what before realigned |
Inspected and swept |
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If you have a 90ﾟ offset on a chimney you should recommend stalling what at the off set |
Clean out |
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What do you never clean a catalytic combustor with |
Wire brush |
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Weekly service recommended for pellet stoves |
Ash, glass, firepot, heat exchanger |
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What is the primary safety control on a oil fired furnace |
Stack control |
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What is the most important factor in flow or flow capacity |
Size of venting passageways |
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2 types of smoke detectors |
Ionization and photoelectric |
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Best solution for wind induced downdraft |
Raise the chimney |
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Category one gas appliances are expected to have flue gas temperatures that are what |
A 140ﾟ above their dew point |
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Easiest solution for stoves and experience back puffing |
Increase the amount of air flowing into the appliance |
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3 factors that influence flow capacity |
Draft, resistance to flow and the size of the venting system |
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Clearance reduction systems chart |
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Wood stove device which helps regulate the amount of combustion air reaching the fire |
Air inlet control |
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A device designed to increase the combustion of efficiency of a wood burning system by lowering the Ignition temperature a flue gasses |
Catalytic combustor |
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Units of masonry projecting upward and outward from the face of a wall or chimney in courses to form a support or ledge for a beam |
Corbel |
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What is a factory built field installed product consisting of a firebox assembly designed to be installed within it or partially within the fire Box of a fireplace |
Fireplace insert |
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A coat of mortar applied to the inside of a masonry chimney or to the walls of a smoke chamber |
Parging |
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What is spalling |
Chipping or flaking |
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How much can you project corbelling |
One half the unit height or one third the unit bed depth. Which ever is less |
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Single wall connector clearance |
Oil or solid appliance - 18" Unlisted gas appliance - 9" Oil appliances type L vent - 9" Listed gas appliances - 6" |
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Maximum horizontal connector run on a natural draft chimney |
Shall not exceed 75% of the height of the vertical portion of the chimney. If it is a listed connector it can be 100% |
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Hearth size if the fireplace opening is 6 square feet/ 864 square inches or larger |
20 inch on front and 12 inch sides |
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Cleanout door location |
6 inches below the lowest chimney and inlet. The height is also at least 6" for the cleanout |
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Where can sweep inspection procedures be found. All sweeps should be familiar with this book |
NFPA 211 |
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Masonry heaters are not expected to rise above what temperature |
230ﾟ |
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Masonry heaters are not expected to rise above what temperature |
230ﾟ |
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To be a masonry heater what must the unit weigh |
1760 pounds |
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Progressively decreasing performance from a fireplace or stove may indicate what |
A blockage is developing |
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When using a fire extinguisher what does the terms P.A.S.S. stand for |
Pull Aim Squeeze Sleep |
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Fire extinguishers Class A, class B, class C, class D |
A - ordinary combustibles B - Flammable liquids C - Energized electrical D - Flammable metals |
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How much air can a fireplace consume |
100 to 500 cu ft per minute |
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How to correct flow reversals |
By providing combustion air from outside the structure to support the appliance |
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Draft vs Flow |
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Six step sweeps |
1 - Preliminary examination 2 - Inside preparation 3 - Rooftop exam & sweeping 4 - Inside Sweeping 5 - Final examination 6 - Customer review |
