Blueprint Read, Resi System, Resi Codes,

Question 1

What is the heart of the HVAC system?

Answer 1

The air recirculation fan

Question 2

The plenum allows the air leaving the furnace to lose what?

Answer 2

Turbulence

Question 3

Where should supply outlets be placed?

Answer 3

At the greatest heat loss or gain

Question 4

What’s the ratio between width and depth of a duct

Answer 4

4:1

Question 5

The short way and long way elbows has what dimension of the fitting ?

Answer 5

The short has the short dimension of the cheek, and long has the long dimension of the cheek

Question 6

A change elbow has a throat and heel that maintain that same:

Answer 6

Width from one end to another

Question 7

Offsets change in what direction ?

Answer 7

Side to side

Question 8

Every branch run should have what?

Answer 8

A volume damper

Question 9

The end of the branch run terminates in a fitting called a:

Answer 9

Boot

Question 10

What does the return air part of the system do?

Answer 10

Brings back air from the occupied space to the furnace

Question 11

Uncontrolled leakage of air is called what?

Answer 11

Exfiltration

Question 12

What does the drop duct connect too?

Answer 12

Connects The main trunk duck to the furnace

Question 13

How must underslab heating slope?

Answer 13

Back to the furnace

Question 14

The products of combustion leave the furnace through what?

Answer 14

The flue collar connection

Question 15

Double wall vent connector is:

Answer 15

Typically standard B-vent material

Question 16

When must a vented thimble be used?

Answer 16

When vent connector passes through a combustible wall.

Question 17

What distributes air from the central heating or cooling unit?

Answer 17

The supply air system

Question 18

The mechanical room must be supplied what?

Answer 18

Air to support combustion

Question 19

What’s the main purpose of most exhaust fans?

Answer 19

To remove moisture from a building

Question 20

The duct carrying fresh air from outside is connected to what?

Answer 20

The return air duck

Question 21

What is the most efficient shape for airflow

Answer 21

Round duct

Question 22

What effects airflow?

Answer 22

Filters, registers, grilles, and dampers

Question 23

The combustion part of the furnace is:

Answer 23

The burning of fuel

Question 24

Natural gas and propane furnaces have:

Answer 24

A gas control and burner assembly

Question 25

What’s the unit for heat in the imperial system?

Answer 25

British Thermal Unit

Question 26

What are the 2 types of burners

Answer 26

Upshot and inshot

Question 27

What furnace has an automatic ignition system?

Answer 27

Fuel oil burning furnaces

Question 28

The heat exchanger separates the air that circulate through the house from the products of _____

Answer 28

Combustion

Question 29

Gas furnaces have a number of _______ controls

Answer 29

Safety

Question 30

Furnaces are rated according to the amount of fuel they burn or:

Answer 30

The input rate

Question 31

The draft hood allows air to mix with products of combustion and ________ them before they leave the furnace

Answer 31

Cool

Question 32

Controls on mid eff furnaces are what?

Answer 32

Normally solid state controls

Question 33

What are high efficiency furnaces called?

Answer 33

Condensing furnaces

Question 34

The blower in a highboy or upflow is:

Answer 34

Underneath the heat exchanger

Question 35

Fan coils don’t use what?

Answer 35

Fuel to produce heat

Question 36

The standard filter media is:

Answer 36

Fibre glass mesh

Question 37

The evaporator coil normally goes ______ of the heat exchanger

Answer 37

Goes Downstream

Question 38

The lining of the chimney is done to reduce what?

Answer 38

The size of the flue to the correct size

Question 39

The fresh air vent system consists of what three components?

Answer 39

Vent air exhaust, exhaust air, and fresh air

Question 40

The safety of workers and job sites is governed by_____

Answer 40

OH&S

Question 41

The installation of gas appliances and piping is governed by ________

Answer 41

B149.1-05 can/csa

Question 42

Building construction standards specific to Alberta are covered by_______

Answer 42

ABC

Question 43

The Canadian standards association (CSA) is an internationally recognized _________

Answer 43

Standards and testing agency

Question 44

The national fire protection association conducts research and provides:

Answer 44

Codes and standards

Question 45

The first step in a construction site is to what?

Answer 45

Survey the site

Question 46

An HRV recovers what?

Answer 46

Heat from air being exhausted

Question 47

The rough in stage is the part of the job where:

Answer 47

The penetrations to the exterior are installed

Question 48

How night should the furnace be hung above the finished floor height before it’s poured?

Answer 48

12-14 inches

Question 49

The ductwork stage consists of:

Answer 49

Running everything from the mechanical room to the occupied space

Question 50

The return air drop is part of what?

Answer 50

The return air system

Question 51

Mid efficient furnaces venting must not be done with:

Answer 51

The same pipe used for distribution

Question 52

The combustion air ducting for the furnace and hot water heater should be:

Answer 52

Insulated from the hood all the way to the termination

Question 53

The return air trunk duct is the location that the _____ intake for vent requirements is connected to

Answer 53

The fresh air intake

Question 54

The clearance between the exhaust hood and the regulator vent is _____

Answer 54

3 Feet

Question 55

The clearance between the fresh air intake and the regulator vent is _______

Answer 55

10 Feet

Question 56

The outdoor air supply duct should not what?

Answer 56

Be connected upstream of any return branch connections