Install ICI AIr Heating Appliances

Question 1

A conventional kiln uses what

Answer 1

steam flow into the kiln through pipes and radiates heat into the kiln’s atmosphere

Question 2

A conventional kiln does what

Answer 2

Water content of the wood is converted into vapor by evaporation and discharged from the kiln with the hot air

Question 3

Direct-Fired Kilns where do the flue gases go

Answer 3

the hot gases of combustion are released directly inside the kiln

Question 4

What monitors and regulates the direct fired and indirect fired kiln’s temperature, humidity, and airflow

Answer 4

A control system

Question 5

Indirect-Fired Kilns where do the flue gases go

Answer 5

the hot gases from combustion are passed through a heat exchanger and the air from the kiln is circulated passed the heat exchanger.

Question 6

typically in the industry you will find what kind of air dryers

Answer 6

Continuous (tunnel or rotary) or batch (tray) type dryers

Question 7

Paint dryers generally come in two types:

Answer 7

Powder coating booths
Spray booths

Question 8

Powder coating booths are used for what

Answer 8

to dry the powder coated product after they have been sprayed

Question 9

What kind of burners are usually found in a powder coating booth

Answer 9

Often the burners used are direct-fired line type burners

Question 10

What kind of burners are usually found in spray booths

Answer 10

Spray booths are often fitted with a direct-fired burner.

Question 11

Spray booths for vehicles will have two stages:

Answer 11

Spray stage
Baking stage

Question 12

The spray booth will be controlled typically using what

Answer 12

PLC system which controls circulation and exhaust fan speeds, temperature, and other functions of the spray booth

Question 13

What are direct-fired MUA for

Answer 13

to supply tempered air to replenish any exhausted air from a building

Question 14

Difference in installing a DFMUA vs a IDFMUA

Answer 14

The only major difference for installation is installing a flue vent on the exit of the unit’s heat exchanger flue passages.

Question 15

The most common Atmosphere Generators used in the heat-treating industry are (2)

Answer 15

classified as ‘Exothermic’ or ‘Endothermic’.

Question 16

Endothermaic does what

Answer 16

minimize or eliminate the undesirable effects of the furnace’s gases, such as oxidation or decarburization

Question 17

Exothermic does what

Answer 17

the interaction between the gases and the material itself is required as part of the process, such as the carburization of steel.

Question 18

The seismic restraint system must be designed to meet the requirements of

Answer 18

National Building Code of Canada (NBCC) and the Canadian Standards Association (CSA) Standard S832

Question 19

The seismic restraint system must be designed and installed by who

Answer 19

a qualified professional, such as a licensed engineer (highly unlikely) or seismic restraint specialist.

Question 20

Vibration isolation prevent

Answer 20

vibration transmission
It keeps vibration energy from entering an object, such as a structure or piece of equipment.

Question 21

Vibration damping does what

Answer 21

dissipates vibration energy
It absorbs or changes vibration energy, reducing the amount of energy transmitted through the equipment or structure.
it reduces the amplitude and frequency of vibrational waves

Question 22

Wire rope isolators are ideal for what

Answer 22

low frequency, highly damped vibration isolation and excellent shock attenuation.

Question 23

Spring isolators are ideal for

Answer 23

limiting the transmission of vibration, shock and structure borne noise over a variety of applications – from engine generator sets and small fans to heavy duty HVAC equipment and industrial machinery.

Question 24

Vibration Isolation Pad Mounts are constructed of what

Answer 24

flexible materials such as elastomers, rubber, cork, dense foam and laminate materials

Question 25

Vibration Isolation Pad Mounts are usually used where

Answer 25

under heavy machinery excellent high frequency sound attenuation and can be used effectively to prevent shock and vibration transmission in non-critical installations. limited to medium and high-speed equipment and are generally economical only with light and medium weight equipment.

Question 26

Ceiling mounted vibration isolation hangers are designed for use with what

Answer 26

suspended piping and equipment in order to prevent the transmission of vibration to the building structure

Question 27

Neoprene hangers are designed for

Answer 27

to isolate high frequency vibrations

Question 28

spring hangers are designed to

Answer 28

isolate low frequency vibrations.

Question 29

Which hangers are the best option if the desire is to isolate both low and high frequency vibrations.

Answer 29

a combination of elastomer and spring elements

Question 30

Roof top mounting supports are

Answer 30

rugged, structural tubular steel support systems

Question 31

What is used to balance a ductwork distribution system.

Answer 31

Dampers

Question 32

Steps to balance duct work

Answer 32

measure air calculate required airflow adjust dampers remeasure air flow fine tune check temp

Question 33

A typical fog humidification installation in an AHU consists of

Answer 33

high-pressure pumps, a control system, fog nozzle manifolds, a fog droplet filter, a drip tray, and a drain pan, as well as staging valves.

Question 34

The steam-to-steam humidifier uses a

Answer 34

heat exchanger, separating the steam generated by the steam boiler from the steam that enters the air stream

Question 35

Benefit of a Steam to Steam Humidifier

Answer 35

avoids the concern of using treated steam boiler water and the adverse health effects associated with chemicals being brought into the air stream from the boiler.

Question 36

How do Electric Steam Humidifiers work

Answer 36

generating steam with a water source and electricity Using electrodes to pass electricity through water is one method, and the other would be to use immersed resistance heating elements to boil water for steam supply less responsive for quick control.

Question 37

Gas fired steam humidifiers use

Answer 37

ionic beds of fibrous mediums that heat the water using gas instead of electricity

Question 38

Downside to Gas fired steam humidifiers use

Answer 38

The fibrous medium will absorb several pounds of solids in the water and will require replacement when the medium is fully loaded

Question 39

Where can a evaporative humidifier be installed

Answer 39

in an air handler or in supply or exhaust ductwork

Question 40

How do Evaporative Humidifiers work

Answer 40

Air passes over media as water trickles down over it, causing the air to be cooled while increasing its relative humidity.

Question 41

Evaporative Humidifiers need

Answer 41

water filtration and a drain

Question 42

High limit sensors ensure what

Answer 42

humidity doesn’t exceed a certain maximum

Question 43

What ensures air is moving over the dispersion tubes

Answer 43

airflow proving switch (sail switch.) installed downstream of the dispersion tubes

Question 44

For a DFMAU, there is often two layers of filtration;

Answer 44

particulate and bird/leaf screen.

Question 45

Note how the filters are installed on an angle. Why do you think this is?

Answer 45

This increased surface area allows for more airflow volume due to more free area to flow through.