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What is a corbel? - ✔✔masonry projecting upward and outward from a wall or chimney A cricket is designed to_________. - ✔✔redirect water and snow away from the chimney What is a wythe? - ✔✔A course of brick separating flues within a chimney When a round flue is used for the lining of a fireplace chimney the proper fireplace opening to flue size ratio should be? - ✔✔12: Where unlined the smoke chamber walls shall be what thickness? - ✔✔8" When the opening of the fireplace is 6 square feet the extension of the hearth should be __________? - ✔✔20 inches The inner surfaces of the smoke chamber shall not be inclined more than 45 degrees from vertical: true or false? - ✔✔True A level II inspection includes inspection of accessible areas of attics, basements,and crawlspaces: true or false? - ✔✔True The purpose of a heat reclaimer is to _______? - ✔✔extract heat from the flue gases. What answer best describes the allowable free air space around a flue tile? - ✔✔1/2" to 4" Crickets are recommended whenever the chimney is ____ wide or more. - ✔✔30"
The maximum allowable slope of an offset in a vertical flue is ___________. - ✔✔30 degrees The net area of the spark arrestor must not be less than three times the net free area if the chimney flue: true or false? - ✔✔True What is the minimum thickness of a wythe? - ✔✔Four inches nominal Chimney liners are listed to what standard? - ✔✔UL 1777 NFPA 211 recommends annual cleaning of chimneys,fireplaces, and vents: true or false? - ✔✔False The horizontal length of a single-wall connector to a natural draft chimney or vent serving a single appliance shall be not more than ______ of the height of the vertical height of the chimney. - ✔✔75% The effective area of a connector for a single appliance shall be ____ the area of the appliance flue collar.
- ✔✔not less than Cleanout openings shall be provided in all chimney flues serving freestanding appliances: true or false? - ✔✔true Which of the following species may cause anaphylactic shock? - ✔✔bees A type 3 ladder is rated for ______. - ✔✔200lbs Wood burns in three identifiable stages: ____________, ____________, and ____________. - ✔✔drying, pyrolysis , charcoal The volume of gases which actually pass through the system as a result of draft is___________. - ✔✔flow
Which animal is known for roundworm? - ✔✔raccoons Of the following, which is NOT a step of a sweep? Inspecting Turn all gas appliances to off position Customer Review Inside Preparation - ✔✔Turn all gas appliances to off position What is the proper class for an fire extinguisher that is used for flammable liquids,grease,and oil. - ✔✔Class B The area of a fireplace chimney flue cannot be greater than twice the area of the woodstove appliance outlet on an exterior chimney: true or false? - ✔✔True Cleaning the smoke shelf is not always necessary, unless there is a fireplace insert installed: true or false?
- ✔✔False A 24 gauge sheet metal panel with 1-inch airspace will reduce clearance to combustibles by(when used as a wall protector) _________-. - ✔✔66% According to NFPA 211, solid fuel-burning appliances can be installed in a garage: - ✔✔Never The maximum weight for an Type I industrial grade ladder rating is ____________. - ✔✔250 pounds Where the trim of a mantel extends up to an 1 1/2", clearance to combustibles from the firebox opening should be at least __________. - ✔✔6 inches There must be ____ inches of masonry between a wall thimble and combustible material. - ✔✔ 12
Smoke pipe diameter 6 through 10 inches has a required gauge of __________. - ✔✔ 24 Single wall chimneys on the exterior of a home can only be used for oil or gas: true or false? - ✔✔False Only allowable vent to be used in a stud cavity of a wall. - ✔✔BW Vent A single wall connector used for oil and solid fuel appliances requires at least _____ inches of clearance to combustible material. - ✔✔ 18 A Type L vent is used for low temp oil appliances and gas appliances: true or false? - ✔✔True Unlisted appliances with legs providing 6 inches (or more) of ventilation under the appliance require which of the following hearths: - ✔✔2 inches of brick covered with 24 gauge sheetmetal Connector pipes or thimble should extend into the flue how far? - ✔✔flush with interior flue wall Connector pipes must be secured with at least ______screws. - ✔✔ 3 The formula for determining the cross sectional area of a square or rectangular flue is pi x r2: true or false? - ✔✔False Two major factors influence the amount of draft, which two (of the choices below) best describe them?
- height and btus of chimney
- temperature difference between the outside and the flue gas temperature,chimney height
- lateral run of connector pipe and heights of chimney
- temperature of flue gases and cross sectional area of flue - ✔✔temperature difference between the outside and the flue gas temperature,chimney height The height of the smoke chamber should be no taller than _____. - ✔✔width of fireplace opening
Minimum air space allowed between the flue lining and the interior masonry wall is __________. - ✔✔not less than 1/2 inch The lintel prov ides a transition from the smoke chamber to the flue lining: true or false? - ✔✔False Wood burns in three identifiable stages. Which is the second stage? - ✔✔pyrolysis The color code for a type 1 ladder is blue: true or false? - ✔✔True When walking on a roof you should walk ___________. - ✔✔near the ridges and valleys OSHA states that a proper ladder angle or slope is ________. - ✔✔4 to 1 The area of a 8" round pipe is approximately ________. - ✔✔50 Square inches The ideal moisture content of wood should range between ________ to ________. - ✔✔15 to 25 percent The two major principles at work in a chimney are __________ and _________. - ✔✔flow, draft A connector is a UL listed pipe to connect a fuel burning appliance to a chimney or vent: true or false? - ✔✔False Smoke density is the _______________. - ✔✔amount of unburned hydrocarbons in the flue gas Proper clearance to combustibles, inspection of accessible attics, and rooftop inspection would be considered what level of inspection? - ✔✔Level 2 The net free area of the spark arrestor must not be less than 3 times the net free area of the chimney flue it serves: true or false? - ✔✔True
When installing smoke pipe on a woodstove which end of the smoke pipe goes down (toward the appliance)? - ✔✔male Mobile home and manufactured homes must meet stringent NFPA 211 standards: true or false? - ✔✔False Vents are used for venting solid fuel burning appliances only: true or false? - ✔✔False A draft hood should be installed on a woodstove when:
- the manufactures instructions cannot be found
- when draft is needed to be increased
- if there is negative pressure in the room
- none of the above - ✔✔none of the above Single wall connectors less than or equal to what diameter will be permitted to pass through a partition or wall:
- 6
- 10
- 8
- none of the above - ✔✔none of the above Square chimney flues shall have a minimum cross-sectional area of at least ________ the area of the fireplace opening. - ✔✔1/10th Wood stove with pedestals providing 2 to 6 inches of ventilated open air space may be placed over combustible floors if ____________. - ✔✔the floor is protected with not less than 4 inches of masonry covered with 24 gauge sheet metal An exterior masonry chimney must have a least how many inches of clearance to a combustible wall? - ✔✔1 inch
If a mantel projects 3 " from the face of the fireplace, it should be _____ above the fireplace opening. - ✔✔12 inches When measuring distances, nominal dimensions may vary from their stated dimensions by no more than________. - ✔✔1/2 inch The minimum height for a chimney or vent above flue collar or draft hood is ____. - ✔✔5 feet A Chimney must be _____ taller than any portion of any structure located within 10 feet of the chimney.
- ✔✔24 inches A chimney must be _______tall at the point it passes through the roof. - ✔✔36 inches Interior residential chimneys shall be ______where they extend through closets,storage areas, or habitable spaces. - ✔✔enclosed The maximum continuous flue gas temperature for a residential chimney should not exceed __________. - ✔✔1000 degrees All spaces between chimneys and the floors and ceilings through which the chimneys pass shall remain fully open but be ________ with noncombustible material. - ✔✔firestopped There should be an air space between the flue tile and the (inside of the) chimney wall of at least_____and no more than______. - ✔✔1/2 inch,4 inches 24 gauge sheet metal is thinner than 26 gauge metal true or false? - ✔✔False When inspecting clearance reduction systems, all clearances shall be measured from the outer surface of the connector or appliance to __________. - ✔✔the combustible material
A 24 gauge sheet metal panel with 1-inch airspace will reduce clearance to combustibles by ______ when used as a ceiling protector. - ✔✔50% A horizontal connector pipe 4 feet long must rise______between the appliance and chimney. - ✔✔1 inch _________ operated dampers shall not be placed in chimneys, vents or connectors of stoker-fired, liquid or gas - burning appliances. - ✔✔Manually For information on concerning the use and installation of draft hoods, refer to:
- The National Fuel Gas Code
- The NFGC
- The NFPA 54
- All of the above,because they all refer to the same document - ✔✔All of the above,because they all refer to the same document Steel fireplace units incorporating a firebox liner of not less than_____thick steel and an air chamber shall be installed with masonry to provide a total thickness at the back and side of not less than ____,not less than______of which shall be solid masonry. - ✔✔1/4 inch,8 inches,4 inches The clearance between the outside surface of the sidewall of a masonry fireplace and combustible material shall be not less than - ✔✔2 inches When the fireplace opening is greater than 6 square feet, the hearth must extend _______ in front of the fireplace opening, and _____ to each side of the fireplace opening. - ✔✔20 inches, 12 inches A 3 1/2 inch thick brick wall protection system installed with a 1- inch airspace will reduce clearance to combustibles material by _____. - ✔✔66% When used with an unlisted freestanding woodstove, the clearance between the combustible wall and the woodstove should be ______ when the wall is protected by a 3 1/2" brick wall with a 1" airspace. - ✔✔12 inches
The temperature measured with a surface thermometer is roughly _____ of the actual internal flue gas temperature. - ✔✔50% Pellet fuel produces approximately _____ of heat per pound. - ✔✔8200 BTU "s Cordwood fuel produces approximately ______Of heat per pound. - ✔✔8600 BTU "s A heat exchanger is ___________. - ✔✔An area in the appliance where heat is transferred to air or water A combustion chamber is ______________________. - ✔✔An area in the appliance where heat is produced A _____ is a fixed metal plate between the firebox and stove flue collar designed to increase combustion efficiency by slowing the passage of smoke. - ✔✔baffle When the furnace blower is located on the return side of the furnace it will create ______pressure around the furnace exchanger. - ✔✔Positive Horizontal sections of connector pipe should be installed with the seams on the ________. - ✔✔top A barometric damper ______ draft. - ✔✔reduces IF a ladder is used to reach a roof line that is 16 feet high, the base of the ladder should be ______from the building. - ✔✔4 feet Hypothermia is a potential hazard for chimney technicians. It is caused by ______________. - ✔✔Exposure to cold Raising the height of the chimney ___________________. - ✔✔Increases draft
The customer thinks their chimney was damaged during a recent hurricane. You should recommend which level of inspection? - ✔✔Level 2 To help establish draft in a cold chimney when lighting the fire you could ______________________. - ✔✔Hold a burning newspaper wand up in the damper Video scanning the chimney is a required part of a Level 1 inspection: true or false? - ✔✔False Which organization regulates woodstoves & fireplaces in mobile homes? - ✔✔HUD The best shoes for walking on roofs are ______________________. - ✔✔Sneakers or boots with crepe or gum soles Creosote is _______. - ✔✔Carcinogenic How do you reset a stack control on an oil fired appliance? - ✔✔Pull the lever out of 1/4 of an inch, then release slowly Backpuffing is described as ___________________________. - ✔✔Smoke coming into the room in short sharp bursts Sensible heat is heat that you can feel: true or false? - ✔✔True Latent heat is heat that you can feel: true or false? - ✔✔False Having the customer sign your documentation is important because _________________________. - ✔✔It gives them the burden to act on any issues you have noted Natural gas has approximately ___________ BTU's per cubic foot of gas. - ✔✔ 1000
