Chapter 8: Chimney and Vents Flashcards
Appliances other than gas shall be vented in accordance with the manufacturer’s instructions and NFPA _____________.
211
Equipment not required to be vented includes __________.
Listed Ranges
Gas utilization equipment requiring venting shall be permitted to be vented by means of a mechanical draft system either forced or induced draft design except for ___________.
Incinerators
A listed vented wall furnace would use __________ vents.
Type B-W
No portion of a venting system shall pass through a ____________ or furnace plenum.
Circulating air duct
Factory-built chimneys used to vent appliances that operate at ________ pressure shall be listed for such application.
Positive
A chimney for residential-type a low-heat gas utilization equipment shall extend at least _________ feet above the highest point where it passes through a roof of a building.
3 feet
A chimney for medium-heat equipment shall extend at least ________ feet higher than any portion of any building within _________ feet.
10 feet, 25 feet
A gas vent passing through a roof shall extend ________ a roof flashing, roof jack, or roof thimble and terminate with a _______.
Entirely through, listed termination cap
Any angle greater than ________ degrees from the vertical direction is considered _________.
45, horizontal
The total horizontal distance of a vent plus the horizontal vent connector shall not exceed ________ percent of the vertical height of the vent.
75%
Vents serving Category I fan-assisted appliances shall be installed in accordance with the _______________ or other approved engineering methods.
installation instructions and Section 803
A 14-inch diameter gas vent extending through a metal flashing less than 8 feet from a vertical wall must extend at least ________ feet above the vertical wall.
2 feet
a Type B or Type L gas vent shall terminate at least _______ feet in vertical height above the highest connected draft hood or flue collar.
5 feet
A Type BW gas vent shall terminate at least ________ feet above the bottom of the wall furnace.
12 feet
A gas vent extending through an outside wall shall not terminate adjacent to the wall or below _____________.
Eaves or parapets
For sizing gas vents for Categories II, III, IV appliances, the gas vent shall comply with ____________.
The equipment manufacturer’s instructions
A common vent serving Category I appliances in multistory installations is permitted, providing the vent system is designed and installed in accordance with ________________.
Approved engineering methods and this code
Single-wall meter vent pipe shall not be used ____________ for venting gas appliances.
Outdoors in cold climates
Single-wLl metal pipe shall used to vent gas appliances shall not originate in any _____________.
Unoccupied attic or concealed space
A mechanical draft venting system shall terminate at least ___________ feet above any forced air inlet within 10 feet.
3 feet
A mechanical drafting venting system, of other than direct-vent type , shall terminate at least __________ feet below our horizontally from a door, operable window, or gravity air inlet into any building.
4 feet
The bottom of any mechanical draft or direct-vent terminal shall be at least _________ inches above grade.
12 inches
A vent connector shall be made of noncombustible ___________ material capable of withstanding the vent gas temperature produced by the gas utilization equipment.
Corrosion-resistant
Vent connectors shall be covered with ___________.
Insulation
A vent connector shall be installed so as to ___________ and construction features that create excessive resistance to the flow of the flue gases.
Avoid turns
A vent connector shall slope upward at a slope non less than ___________ inch per foot.
1/4 inch
Vent connector supports shall be _________.
Adequate for the design and weight of the material
A vent connector shall not pass through any ceiling, floor, or _________.
Fire-resistance-rated-wall
Through-the -wall vents for Category IV and noncategorized condensing appliances shall not terminate over ___________.
Public ways
