Appliance, Venting, Part A Flashcards

1
Q

Gas appliances must be connected to

A

Chimney
Vent

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2
Q

A vent may be any shape, true or false

A

True

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3
Q

if a single appliance is 5 inch round what’s the minimum size connecter you could use

A

4 inch

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4
Q

What’s ROT stand for

A

Rule of thumb

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5
Q

All exterior vents must be

A

Insulated

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6
Q

How do we define and exterior chimney

A

1 or more sides exposed to the outdoors

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7
Q

If we were changing the size of a connecter on an appliance, where do we make a change?

A

The appliance

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8
Q

What is the minimum total height for an appliance if we are making a change to the connecter size?

A

No less then 10ft

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9
Q

Appliances with draft can’t be reduced lower than

A

4”

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10
Q

Adding elbows to capacity of vent or vent connecter will do what

A

Reduce

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11
Q

If we add extra elbow to the connector, it will reduce the table capacity by how much

A

10%

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12
Q

If we add a elbow to fan assisted appliance, how much percentage does it add

A

15%

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13
Q

When can we assume two are more elbows are used venting appliance

A

When length is greater than zero

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14
Q

What is common header referred to as

A

Common vent connecter manifold

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15
Q

Why must table capacities be reduced when we use a common header

A

Because of turbulence

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16
Q

What do we call the Motive force that is used to vent products of combustion

A

Convection

17
Q

Why does altitude affect venting?

A

It changes the fuel input because of less oxygen, also known as the de-rating

18
Q

Can a furnace induced appliance ever be vented in a Masonary chimney?

A

As long as it’s lined with B- vent

19
Q

Corrugated liner adds capacities to be reduced by

A

20%

20
Q

12 inches or smaller can be reduced how much

A

One size 

21
Q

Draft hood appliances cannot be smaller than

A

4 inches

22
Q

Fan assisted appliances can be smaller than

A

4 inches