Chimney and Vent Connections Flashcards
What is the purpose of a connector in heating systems?
A connector is used to connect fireplaces, stoves, and heating systems to a vertical chimney or vent, except where the chimney or vent is directly attached.
What materials must be used for connectors in oil and solid-fuel burning appliances?
Connectors must be made of factory-built chimney material, Type L vent material, or single-wall metal pipe that is resistant to corrosion and heat.
What is the minimum required thickness for a connector pipe made of galvanized steel?
For pipes 6 inches or smaller, the minimum thickness is 26-gauge galvanized sheet metal.
What must be done with unused openings in chimneys and vents?
Unused openings must be closed.
How must connectors be installed for accessibility?
Connectors must be accessible or removable for inspection and cleaning.
At what point must a connector vent pipe connect to a masonry chimney flue?
At least 12 inches above the lowest portion of the interior of the chimney flue, though some building codes allow 8 inches.
How should connector vent pipes be installed?
In accordance with the manufacturer’s installation instructions.
What is the maximum length of an uninsulated connector pipe to a natural draft chimney?
10 feet, or per the 2018 IRC, no more than 75% of the chimney height above the connector.
What is the slope requirement for a connector pipe?
At least 1/4-inch of rise per foot of run.
How should connector joints be fastened?
With sheet metal screws or rivets.
Can a chimney connector pipe pass through a floor, ceiling, or wall?
No, unless it is listed and labeled for a wall pass-through.
What is required if a single-wall metal pipe passes through a wall, ceiling, or floor?
It must be guarded by a ventilated, non-combustible metal thimble with at least 6 inches of clearance from combustibles.
What is required if a single-wall metal pipe passes through a combustible roof?
A non-combustible thimble must be used.
What is the minimum clearance for an unlisted single-wall vent connector from combustibles?
18 inches.
Can the size of the connector pipe be smaller than the flue collar of the appliance?
No, the pipe should not be smaller or restrict itself.
Footings for masonry chimneys must be made of concrete or solid masonry at least:
A) 3 feet thick
B) 2 feet thick
C) 1 foot thick
A: C) 1 foot thick
The footing for a masonry chimney should extend at least _____ inches beyond the face of the fireplace or foundation wall on all sides:
A) 24 inches
B) 6 inches
C) 14 inches
A: B) 6 inches
Footings for masonry fireplaces must extend _____ the frost line:
A) Above
B) Down to
C) Below
A: C) Below
Flashcard 4
Q: House framing components should be at least _____ inches away from the chimney wall:
A) 2 inches
B) 6 inches
C) 24 inches
A: A) 2 inches
Open spaces between the chimney wall and combustible building materials should be sealed and insulated with:
A) Cellulose
B) Non-combustible material
C) Wood shims
A: B) Non-combustible material
A masonry chimney should extend at least _____ feet above the highest point where the chimney passes through the roof, and _____ feet above any portion of a building that is within a _____-foot distance horizontally:
A) 2, 3, 10
B) 3, 2, 10
C) 3, 10, 2
A: B) 3, 2, 10
Inlets to masonry chimneys must enter from the:
A) Top
B) Bottom
C) Side
A: C) Side
