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CSIA TEST Questions and Answers 2024 / 2025 (Verified Answers by Expert) 100% PASS., Exams of Engineering

CSIA TEST Questions and Answers 2024 / 2025 (Verified Answers by Expert) 100% PASS.

Typology: Exams

2024/2025

Available from 04/25/2025

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Csia Test Paper Questions And Answers
100% Accurate.
When a round flue is used for the lining of a fireplace chimney the proper fireplace opening to flue size
ratio should be
12:1
When unlined the smoke chamber walls shall be what thickness
8"
When the opening of the firebox is 6 square feet the extension of the hearth should be
20 inches
T or F the inner surfaces of the smoke chamber shall not be inclined more than 45 degrees from vertical
True
A level 2 inspection inspection of accessible areas of attics basements and crawlspaces
True
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Csia Test Paper Questions And Answers

100% Accurate.

When a round flue is used for the lining of a fireplace chimney the proper fireplace opening to flue size ratio should be

12:

When unlined the smoke chamber walls shall be what thickness

8"

When the opening of the firebox is 6 square feet the extension of the hearth should be

20 inches

T or F the inner surfaces of the smoke chamber shall not be inclined more than 45 degrees from vertical

True

A level 2 inspection inspection of accessible areas of attics basements and crawlspaces

True

The purpose of a heat reclaimer is to

Extract heat from the flue gases

What best describes the allowable free air space around a flue tile

1/4 inch to 4 inch

Crickets are recommended whenever the chimney is

30" wide

The maximum allowable slope of an offset in a verticle flue is

30 degrees

The area of the spark arrestor must not be less than three times the net free area of the chimney flue

True

What is the minimum thickness of a wythe

4 inches nominal

A type 3 ladder is rated for

200 lbs

what are the stages of wood burning

drying pyrolysis charcoaling

The volume of gases which actually pass through the system as a result of draft is

Flow

Rectangular flues with aspect ratios greater than 2 to 1 shall be sized at least ______ of the fireplace opening

1:

single wall connector clearance for an unlisted gas appliance with a draft hood is

a level ______ inspection is done with ladders and common hand tools

2

Draft is the force or pressure difference between the inside and the outside of the venting system

true

NFPA 211 recommends chimney flues should be inspected

Annually

Two major factors that affect draft are

temperature differential and chimney height

what are factors of combustion efficiency

time turbulence and temperature

rabies is not carried by

Birds

what species carries histoplasmosis

Birds

what animal is known for roundworm

raccoons

what is NOT a step of a sweep

where the trim of a mantel extends up to an 1 1/2 inch clearance to combustibles from the firebox opening should be at least

6 inches

there must be _______ inches of masonry between a wall thimble an combustible material

12

smoke pipe diameter 6 through 10 inches has a required gauge of

24 gauge

T or F - single wall chimneys on the exterior of a home can only be used for oil or gas

Flase

ONly allowable vent to be used in a stud cavity of a wall

BW Vent

A single wall connector used for oil and solid fuel appliances requires at least _____ inches of clearance to combustible material

18

T or F - A type L vent is used for low temp oil appliances and gas appliances

True

Unlisted appliances with legs providing 6 inches or more of ventilation under the appliance require what type of hearth

connector pipe of thimble should extend into the chimney how far

flush with the interior flue wall

how many screws for connector pipe

3

the formula for determining the cross sectional area of a square or rectangular flue is?

two major factors influence the mount of draft what are they

temperature difference the outside and flue gas temp and the height of the chimney

The height of the smoke chamber should be no taller than

Natural gas has how many BTU per cubic foot of gas

1000

Propane gas has how many BTU per cubic foot of gas

2500

creosote is a

carcinogenic

How do you reset a stack control on an oil fired appliance

PUll the lever out 1/4 of an inch than release slowly

Backpuffing is

smoke coming into the room in short sharp burst

The customer thinks there chimney was damaged in a recent hurricane you should recommend what

a level 2 inspection

To help establish draft in a cold chimney when trying to light the fire you could

hold a bruning newspaper wand up in the damper

T or F - video scanning the chimney is required in a level 1 inspection

false

a barometric damper does what

reduces draft

a way to increase draft would be to

raise the height of the chimney

a combustion chamber is

an area in the appliance where heat is produced

when the furnace blower is on the return side of the furnace it will?

Create positive pressure around the furnace exchanger

Horizontal sections of connector pipe should be installed with the seems on ______

residence time is

the amount of time smoke stays in the venting system

checking the fire stopping is part of a _______ inspection

level 3

checking that the wall pass through has adequate clearance is part of a _______ inspection

level 2

checking the basic appliance installation and connection is part of a ______ inspection

Level 1

Checking the size and suitability of flues for the connected appliances is part of a ________ inspection

Level 2

Checking the appliance and connector clearance is part of a _______

Level 1 inspection

Checking the expansion joint the flue tile and the wash is part of a ________ inspection

level 2

when the fireplace opening is greater than 6 square feet the hearth must extend ______ to the front and ________ to the sides

20 and 12

a 3.5 inch thick brick wall protection system, installed with a 1-inch air space will reduce clearance to combustibles material by

When used with an unlisted free standing stove the clearance between the combustible wall and the woodstove should be ______ when the wall is protected by a 3.5 brick wall with a 1 inch airspace

12 inches

information on draft hoods can by found in

NFPA 54 or NFGC (same document)

Steel fireplace units incorporating a firebox liner of not less than _____ thick steel and an air chamber shall be installed with masonary to provide a total thickness at the back and side of not less than _____ not less than _____ of which shall be solid masonry

1/4 inch - 8 inches - 4 inches

The minimum height for a chimney or vent above flue collat or draft hood is

3 feet

A chimney must be ______ taller than anything portion of any structure located within 10 feet of the chimney

24 inches

Interior residential chimneys shall be ______ where they extend through closets storage areas or habitable spaces

what is the formula to determine the area of a circle

Radius X Radius X pi

if a mantel projects more than 3 inches it should be

12 " above the fireplace opening

how much can a nominal dimension vary

no more than 1/2 inch

According to IRC where there is no firebrick lining in the firebox the thickness of back and side walls shall not be less than

10"the clearance to combustibles for a exterior masonry chimney is

1 inch

the clearance to combustibles for an interior masonry chimney is

2 inch

Are unlisted decorative shrouds allowed on zero clearance fireplaces

NO

3 and 1/2 inch thick masonry wall without ventilated air space allows you to reduce clearances by how much

33%

A form of draft that is created in the house because of the differential temp between the inside of the home is an example of what

Stack effect

Draft is measure in

Pi

Mobile and manufactured homes must meet what standard

Stringent NFPA 211

T or F - vents are used for vented solid fuel burning appliances only

False

A draft hood should be installed on a wood stove when

single wall connectors less than or equal to what diameter will be permitted to pass through a partition or wall.

T or F a connector is a UL listed pipe to connect a fuel burning appliance to a chimney or vent

False

Smoke density is

Amount of unburned hydrocarbons in the flue gas

proper clearance to combustibles, inspection of accessible attics and rooftop inspection would be considered what level of inspection

Level 2

T or F - The net free area of the spark arrestor must not be less than 3 times the net free area of the chimney flue it serves

True

when installing stove pipe on a wood stove which end of the smoke pipe goes down toward the appliance

Male

The ideal moisture content of wood should range between

15 and 20%

The two major principles at work in a chimney are?

Draft and flow

Minimum air space allowed between the flue lining and the interior masonry wall is

not less than 1/2 inch

True or false - the lintel provides a transition from the smoke chamber to the flue lining

False