Venting Flashcards

1
Q

Clearance for b-vent to combustibles

A

1 inch

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2
Q

Clearance for c-vent to combustibles

A

6 inch’s

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3
Q

What in b-vent made of

A

Aluminum inner wall galvanized on the outer wall

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4
Q

Are you aloud to screw into b-vent

A

Yes if you use 1/4 inch screw so it dose not pierce the inner tube/ the aluminum inner liner

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5
Q

Effective venting heights minimum allowance is

A

5 feet/1.5 meters is the minimum distance allowed

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6
Q

A category 1 appliance operates with a non-positive vent static pressure and a flue loss of no less then

A

17%

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7
Q

A category 2 appliance operates with a non-positive vent static pressure and a flue loss of less then

A

17%

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8
Q

Function of a draft control device

A

The draft control device neutralizes the effect of stack action in the flue when an appliance is operating

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9
Q

Excess stack action can lift what

A

Flames from burner

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10
Q

When the vent becomes cool what happens

A

Will cause the natural up flow to stop

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11
Q

When the vent becomes cool what is it called

A

Cold vent

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12
Q

A kitchen exhaust fan causing a negative pressure in the house will lead to

A

Air be then sucked down threw the vent

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13
Q

What is the difference between a single acting and double acting barometric dampers

A

Single acting barometric dampers only swings one way inwards double acting opens both ways to allowing it to bring stuff in or out

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14
Q

How many type of barometric dampers are there and what are the types

A

2 types single acting and double acting

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15
Q

What shape can a vent be

A

Venting can be any shape as long as it equals the capacity of a round pipe

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16
Q

How high must your vent be when coming out the roof

A

Must extend 2 feet above the roof on a flat roof and on a sloped roof it must extend 2 feet higher then any portion of the roof within 10 feet

17
Q

Chimney must extend above the roof or the highest point where it passes through the roof a minimum of

18
Q

What is L vent used for

A

High efficient oil burner unit

19
Q

Be vent is what shape and why is this

A

Be vent is oval shaped this is to allow it to go threw 2x4 wall it must switch to round once it get to roof connection

20
Q

Appliances the burn sold or liquid fuels cannot connect to a vent be should be connected to a

A

Approved chimney

21
Q

What are the types of chimneys

A

Factory built chimneys and feild constructed chimneys

22
Q

What are factory built chimneys built by a and super a

23
Q

What is the size of the spacing in A vent

24
Q

What is the spacing in super A vent

25
How many differnt GVRs are there
16
26
What number do you times you offsets by in venting
1.5 times your diameter
27
What dose ROT stand for
Rule of thumb
28
If you had a 17 foot vent would you round down or up
Down to 15
29
All draft hood must be installed as per the
Manufacturers certified installation instructions
30
A moisture exhaust duct from clothes dryer must not be fastened with what but can be fastened with what
You can’t use sheetmetal screws but you can you approved tape
31
Fan assisted units venting is what gauge
24 GSG (gauge)
32
A double wall type B vent material my be used for the connector between
The draft hood of an appliance and its chimney/vent
33
Single wall vent connecter is not aloud to go through what
Floors or ceilings
34
Single wall vent connectors are aloud to pass threw
Walls provided that the combustible material must be guarded with non combustible insulation and clearance that do not allow the material to exceed 194f (90c)
35
C1 and C2 tables are used for
Single category 1 appliance