• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/49

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

49 Cards in this Set

  • Front
  • Back

In the sheet metal trade the governing codes that are to be followed would fall under the:

National, provincial, municipal ----> most important

OH & S covers who?

It defines requirements for both employer and employee

All furnaces installed must be certified by whom?

Canadian standards Association (CSA) - second - underwriters laboratories and underwriters laboritories canada

What does SMACNA stand for?

Sheet metal and air conditioning contractors national association.

What is required to complete a heat loss calculation for a building?

Blue print

What does the heat loss calculation determine when completed?

information needed to select a furnace

List the information that could that could be on the spec sheet for a building or home.

Accessories, equipment request for the job, type of furnace, venting system, type of air filtration system, AC.

When looking at the ventilation requirements for a building, what does the Alberta building code require?

That a fan be installed to exhaust air outside it shall be interlocked to a fan that is bringing fresh air from the outside to replace the exhausted air.

Where does the ventilation fan connect to when a separate fan is installed? Also, where is the switch located?

Interlocked with either the furnace fan or seperate intake fan - vented out through the roof or wall. Has a seperate switch

What does HRV stand for?

Heat recovery ventilator

What are the three different types of installation for an HRV unit?

1. HRV - no separate duct work


2. HRV - seperate intake ductwork


3. HRV - stand alone system

Once the house is framed, what should the sheet metal worker do?

Mark holes for carpenters to cut out. Holes for return and supply air.

Once the house has concrete, what can the sheet metal worker do?

Install furnace

what is the purpose of the range hood

remove airborne grease and oils

high efficient furnaces require special venting, what type of venting is it?

BH venting

What else is required for high efficient furnaces?

drainage line

A range hood and dryer vent cannot be connected to what device?

HRV

What is the purpose for a fire stop?

to stop any fire that may travel in the chase that the vent is in and to maintain the clearances to combustibles required for the vent. The fire stopper is made from light gauge metal.

What is the purpose for an insulation stop?

So no insulation comes in contact with the vent.

Which air can be drawn or sent though only metal ducting or pipe ( supply air or return air)

supply air

When setting a furnace, what will connect to the hole that has to be cut on the side of the furnace?

Filter rack

Dryer vents joints should be secured with:

tin tape

When an inspection has taken place, what should be on site showing installation is correct?

Green stick , orange for bad

What is the minimum clearance for:




a. B vent:


b. L-vent:


c. A-vent:


d. C-vent for gas appliances


e. C-vent for liquid fuel appliances


f. C-vent for solid fuel appliances

a. B vent: 1"

b. L-vent: 3"


c. A-vent: 2"


d. C-vent for gas appliances: 6"


e. C-vent for liquid fuel appliances: 12"


f. C-vent for solid fuel appliances: 18"

List which inlet and exhausts should be 3 feet away from a gas regulator.

Fresh air and appliance exhaust

What clearance is required for the front of a gas furnace?

18"

What are the clearances for a gas fired furnace for the plenum and how far should it be before it can rise up to the 1/2 away?

Same clearance for the first 18"

What is the minimum gauge for a 6" pipe?

30 gauge - 0.012 (0.33 mm)

The ABC requires the rectangular duct that is over 12" to be what?

Panels over 12" (300 mm to be shaped to provide sufficient stiffness (crossbroken)

The safety of workers and job sites is governed by which code?




a) OH&S


b) B149, 1-05 CAN/CSA


c) NBC


d) ABC

a) OH&S

The installation of gas appliances and piping is governed by which code?




a) OH&S


b) B149, 1-05 CAN/CSA


c) NBC


d) ABC

b) B149, 1-05 CAN/CSA

Building construction standards specific to Alberta are covered by which code?




a) OH&S


b) B149, 1-05 CAN/CSA


c) NBC


d) ABC

d) ABC

Which agency conducts tests and certifies products used by consumers?




a) CSA


b) ULC


c) a) and b) above


d) SMACNA


e) NFPA

c) a) and b) above

Which agency conducts tests and writes standards specifically for the HVAC industry.




a) CSA


b) ULC


c) a) and b) above


d) SMACNA


e) NFPA





d) SMACNA

Which agency conducts tests and writes standards related to fire protection?




a) CSA


b) ULC


c) a) and b) above


d) SMACNA


e) NFPA

e) NFPA

Through the use of which of the following, can ventilation requirements be achieved?




a) an HRV


b) a specific fan interlocked with the furnace


c) an appropriately sized bathroom fan interlocked with the furnace.


d) all of the above

d) all of the above

The part of the job where the penetrations to the exterior are installed is the:




a) rough in stage


b) ductwork stage


c) final stage

a) rough in stage

The part of the job where furnace is placed in a permanent position is the:




a) rough in stage


b) ductwork stage


c) final stage

b) ductwork stage

The part of the job where the thermostat is mounted in a permanent manner is the:




a) rough in stage


b) ductwork stage


c) final stage

c) final stage

In order to save ______ on the job site and eliminate the ______ of material, a number of _________ to the job site will be required.

In order to save time on the job site and eliminate the waste of material, a number of visits to the job site will be required.

Underslab heating systems grade away from the furnace. True or false?

false

What are underslab heating fastened securely with slab stakes to:




a) keep the duct off of the bottom of the trench.


b) to keep the duct from floating when the concrete is poured.


c) to maintain the slope of the ductwork for drainage.


d) All of the above

d) All of the above

Whose responsibility is to ensure the job is done properly and to the applicable code?




a) the building owner


b) the construction contractor


c) the installer


d) the inspector

c) the installer

B-vent used for a common vent requires what clearance to combustible materials?




a) 1"


b) 2"


c) 6 "


d) 18"

a) 1"

Single wall vent connector on a wood burning appliance requires what clearance to combustibles?




a) 1"


b) 2"


c) 6 "


d) 18"

d) 18"

The clearance between an exhaust hood and the regulator vent on a natural gas or propane line coming into a building is:




a) 2 feet


b) 3 feet


c) 6 feet


d) 10 feet

b) 3 feet

The clearance between a mechanical fresh air intake hood and the regulator vent on a natural gas or propane line coming into a building is:




a) 2 feet


b) 3 feet


c) 6 feet


d) 10 feet

d) 10 feet

Explain why the NFPA and the ABC requires minimum metal gauges for plenums and ductworks and clearance to combustibles on the supply plenums of forced air furnaces.

Minimum gauges of material and minimum clearances to material are required to protect the combustibles from the infrared radiation transmitted from the heat exchanger to the duct.

What is the distance required between a fresh air connection to the furnace and the furance fan inlet if the air not tempered to 15 celcicus or connected through an approved mixing device?




a) 3 feet


b) 6 feet


c) 10 feet


d) 12 feet

c) 10 feet