Chapter E - Explain Operation of a Venting System Flashcards

1
Q

What are the components of a venting system?

A

Support, fire stop spacer, roof flashing, storm collar, vent cap or vent top, and vent pipe.

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2
Q

What is the purpose of a venting system?

A

To remove flue gas to the outside atmosphere, to prevent damage from condensation, to protect the building structure from fire hazard, and to provide air circulation.

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3
Q

What are two types of drafts?

A

Natural draft, and mechanical draft.

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4
Q

What’s another name for a natural draft vent?

A

A gravity vent.

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5
Q

What’s another name for mechanical draft venting?

A

Power venting.

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6
Q

What are two types of draft control equipment?

A

Draft hoods (draft diverters), and barometric dampers.

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7
Q

What is the minimum clearance of a Type A vent?

A

1 inch.

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8
Q

What is the maximum temperature rating of a Type A vent?

A

2100 F.

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9
Q

What are type A vents used to vent?

A

Oil or solid fuel appliances, or gas appliances that have flue temperatures that exceed 470 F (243 C).

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10
Q

What must be added to a Type A vent when converted to a gas fired appliance that doesn’t have high flue temperatures?

A

A chimney liner.

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11
Q

When are Type BH vents used?

A

Only with high efficiency appliances that produce low flue temperatures and positive vent pressures.

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12
Q

When are Type L vents used?

A

Mostly just in accordance with manufacturers specifications due to cost.

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13
Q

What type of vent is approved for recessed wall heaters where the oval shape can be installed inside a 2 x 4 stud wall?

A

Type BW vents.

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14
Q

What type of vent is only approved to handle low temp. gases from gas appliances?

A

Type B vents.

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15
Q

Type C vents may not:

A

Type C vents may not penetrate any floors, ceilings, or concealed areas of the building structure.

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16
Q

What is another named for a combined vent?

A

A common vent.

17
Q

What may occur when a manifold venting system is installed with too much slope?

A

Spillage at the lower end of the manifold vent. This is caused by insufficient vent connector rise.

18
Q

What type of vent is made of plastic pipe?

A

Type BH vents.

19
Q

Type C vent joints are fastened together using?

A

3 sheet metal screws.