Gas Review

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Module 1 - Quiz 1. A Class B fire extinguisher: A. Is to be used on fires involving cooking oils, trans-fats, or fats in cooking appliances and are typically found in restaurant and cafeteria kitchens. B. Is to be used on fires involving combustible materials such as paper, wood, cardboard, and most plastics. C. Is to be used on fire's involving chemicals such as combustible metals, magnesium, titanium, potassium and sodium. D. Is to be used on fires involving flammable or combustible liquids such as gasoline, kerosene, grease and oil. 2. Why should garbage and debris be removed from a job site: A. B. C. D.

to present a neat appearance to prevent possible slips, trips or falls to reduce the possibility of tool loss in debris to reduce the likelihood of rodents on the job site

3. Which of the following types of fire extinguishers should be used on electrical fires: A. B. C. D.

Class A Class B Class C Class D

4. An employer of a Gas Technician is: A. B. C. D.

responsible for ensuring that technicians are appropriately certified not responsible for ensuring that safety instruction is provided to workers responsible for ensuring that workers arrive safely on the job site responsible for providing all safety clothing to workers

5. A Class C fire extinguisher: A. Is to be used on fires involve combustible materials such as paper, wood, cardboard, and most plastics. B. It Is to be used on fires involving electrical equipment, such as appliances, wiring, circuit breakers and outlets. C. Is to be used on fires involving flammable or combustible liquids such as gasoline, kerosene, grease and oil. D. Is to be used on fires involving chemicals such as combustible metals, magnesium, titanium, potassium and sodium.

6. Which of the following is true: A. B. C. D.

when lifting, it is best to use your back muscles as they are the strongest when lifting, it is best to lift by bending your knees and using your leg muscles when lifting with someone else you should be back to back when lifting a heavy load that is too heavy, lifting and carrying short distances out of time

7. Which of the following statements is true: A. workers do not have to wear hardhats on a job site, even if instructed not to do so by the employer B. workers must wear the protective clothing that the employer instructs them to wear on the job site C. workers do not have to be aware of the contents of the Occupational Health and Safety Act D. unnecessary running or rough or boisterous conduct on job site is NOT prohibited by the Occupational Health and Safety Act 8. Which of the following regulates workplace safety: A. B. C. D.

The Province of Ontario The Natural Gas and Propane Installation Code The Federal Government The National Building Code

9. A Class D fire extinguisher: A. is to be used on fires involving electrical equipment, such as appliances, wiring, circuit breakers and outlets. B. Is to be used on fires involving combustible materials such as paper, wood, cardboard, and most plastics. C. Is to be used on fires involving chemicals such as combustible metals, such as magnesium, titanium, potassium and sodium. D. Is to be use on fires involving cooking oils, trans-fats, or fat in cooking appliances and are typically found in restaurants and cafeteria kitchens. 10. What dies OSHA stand for: A. Ontario Health and Standards Act B. Ontario Health and Safety Act C. Occupational Health and Safety Act

Occupational Health and Standards Act

Module 2 - Quiz 1. Lag shield anchors are generally used to anchor fasteners into: A. B. C. D.

steel wood plastic concrete

2. What type of fastener is used to join two electrical wires: A. electrical bonding clamp B. connector C. wire nut (marrette) D. electrical tape 3. The faster use to connect the drain hose to a fan coil unit is: A. a gear clamp B. copper bailing wire C. electrical tape D. a grappler bar 4. A reading of 7.0* w.c. equals: A. 1/4 psig. B. 1/2 psig. C. 3/4 psig. D. 1 psig.

(1.72 kPa) (3.45 kPa) (5.17 kPa) (6.9 kPa)

5. what is the area of a rectangular air supply opening measuring 12 x 10 : A. 1.0 square feet B. 1.2 cubic feet C. 100 cubic inches D. 120 square inches 6. A foot has __________inches and a meter has_______centimeters. A. 12 inches, 100 centimeters B. 10 inches, 100 centimeters C. 100 inches, 12 centimeters D. 10 inches, 100 centimeters

7. Convert 40* C to Fahrenheit: A. 4.04* F B. 40* F C. 94* F D. 104* F 8. Sheathing on copper wire should be removed with: A. a knife B. pliers C. side cutters D. a wire stripper 9. How should an electric drill be disconnected: A. by pulling on the drills cord B. by pulling the plug at the outlet C. by using a pair of insulated channel lock pliers D. with the chuck key 10. A carbide tipped it is used to drill into: A. stainless steel B. wood C. plastic D. concrete

Module 3 - Quiz 1. The specific gravity of propane is: A. B. C. D.

0.6 1 1.52 3.5

2. By definition, the specific gravity of a gas (vapour) is the: A. weight of the gas as compared to the weight of air B. weight of the gas as compared to the weight of an equal volume of air C. volume of the gas compared to the weight of an equal volume of air D. volume of the gas as compared to the weight of air

3. The ignition temperature of propane is in the range of: A. 920* F - 1020* F (493* C - 549* C) B. 920* C - 1020* C (1688* F - 1868* F) C. 1210* F - 1260* F (654* C - 682* C) D. 1210* c - 1260* C (2210* F - 2300* F) 4. The relative density of propane in a liquid state is approximately: A. 0.5 B. 1.0 C. 1.5 D. 2.0 5. The flame temperature of natural gas is approximately: A. 2500* F B. 2500* C C. 3500* F D. 3500* C

(1371* C) (4532* F) (1927* C) (6332* F)

6. Carbon dioxide is a product of the incomplete combustion of: A. nitrogen B. oxygen C. a hydrocarbon D. an inorganic compound

7. Which of the following are symptoms of carbon dioxide poisoning: A. headaches, nausea B. dizziness, confusion C. rapid heart rate, death D. all of the listed choices 8. A 60* F (15.5* C) one pound of liquid propane will produce____________cubic feet of vapour. A. 2.12 B. 4.30 C. 8.50 D. 10.10 9. The air found with the products of combustion after the complete combustion of natural gas or propane is called: A. primary air B. secondary air C. excess air D. dilution air 10. Natural gas and propane are composed mainly of: A. carbon and nitrogen B. carbon and hydrogen C. carbon monoxide and nitrogen D. carbon dioxide and hydrogen 11. A Bunsen flame is caused by: A. premixing air and fuel prior to combustion B. not premixing air and fuel prior to combustion C. a low ignition temperature D. the presence of carbon monoxide 12. Which substance is inert and passes through the combustion zone absorbing heat during the combustion process:

A. carbon dioxide B. ethyl mercaptan C. oxygen D. nitrogen

13. The odourant added to natural gas and propane for detection purposes is: A. sulphur B. mustard C. carbon dioxide D. mercaptan 14. When cylinders are being transported, they shall be secured: A. vertically with chains and straps and a relief valve, in a well-ventilated space B. in an upright position with chains and straps and a relief valve, in a well ventilated space C. in an upright position, in a well-ventilated location with the relief valve communicating with the vapour space only D. in an upright position, in a well-ventilated location with the release valve communicating with the liquid space only 15. Air that is mixed with fuel prior to ignition is called; A. primary air B. secondary air C. excess air D. theoretical air 16. The specific gravity of natural gas is: A. greater than that of air B. less than that of air C. the same as that of propane D. greater than that of propane 17. Which are the following characteristics of carbon monoxide: A. colourless, tasteless B. odourless, combustible C. lighter than air and extremely toxic

D. all of the listed choices 18. What could result if a flame is adjusted with too much primary air: A. flame quenching B. a luminous flame C. flame lift D. flame dilution

19. What theoretical gas to air ratio is necessary to achieve perfect combustion with an atmospheric natural gas burner: A. 1 part of natural gas to 10 parts of air B. 5 parts of natural gas to 5 parts of air C. 5 parts of natural gas ti 15 parts of air D. 20 parts of natural gas to 1 part of air 20. The heat content of 1 cubic foot of natural gas is approximately: A. 1,000 Btu B. 2,520 Btu C. 10,000 Btu D. 25,000 Btu

Module 4 - Quiz 1. What action shall a person holding a gas technician certificate take, if an installation does not conform to the requirements of the Gaseous Fuels Regulation but doesn't present an immediate hazard: A. B. C. D.

the person shall immediately turn off the supply of gas to the appliance the person shall turn off the supply of gas to the appliance and lock the gas meter the person shall notify the distributor and the owner in writing of the condition the person shall inform the owner

2. A certificate holder must inform the Technical Standards and Safety Authority of a change of address within________days. A. B. C. D.

15 30 60 90

3. When is a certificate required in order to install or service a propane appliance? A. B. C. D.

always when servicing a portable appliance for e own use when installing an appliance in e own single-family detached dwelling when installing or servicing an appliance in other than e own residence

4. Instructing the user in the safe and correct operation of newly installed appliances or equipment is the responsibility of the: A. B. C. D.

installation inspector appliance manufacturer gas supplier appliance installer

5. The B149.1 Code is used to determine: A. B. C. D.

the best method to clean gas appliances the input of gas appliances requirements for installing gas appliances the gas pressure for gas entering a house

6. If an inspector under the Technical Standards and Safety Act issues an order, or if a Director under the Technical Standards and Safety Act refuses to renew a license, registration or certificate, there is no means of appealing or changing the order or decision. A. True B. False

7. Venting air supply requirements are in section____________of the B149.1 Code. A. B. C. D.

3 5 7 8

8. What code or regulation applies to a propane supplied mobile home that has been converted to a permanent home: A. B. C. D.

CAN/CSA-Z240.4.1 B149.1 B149.2 National Building Code

9. Which type of appliance does not have the flue gasses mixed with the medium being heated: A. B. C. D.

direct-fire appliance non vented space heater immersion appliance indirect fired appliance

10. What is the maximum gas pressure permitted inside a single family dwelling: A. B. C. D.

7* w.c. 14* w.c. 2 psig 5 psig

(1.75 kPa) (3.45 kPa (13.8 kPa) (34.5 kPa)

11. Which organization is responsible for administering fuel regulations for the installation of gas appliances in Ontario: A. B. C. D. 12. A

Technical Standards and Safety Authority Canadian Gas Association Energy Mines & Resources Canada Standards Association e ief de ice in a piping system is a/an:

A. device used to divert the flow of gas in the event of a runaway condition B. device used to relieve high temperatures that could cause over-pressure C. device designed to open to prevent a rise of gas pressure in excess of a specified value due to emergency or abnormal conditions

D. assembly installed in the outlet plenum of a forced air furnace which opens in the event of high static pressure

13. Gas piping codes are in section____________of the B149.1 code. A. B. C. D. 14. A A. B. C. D.

3 4 6 9 ick-disconnect de ice is: emergency shut off valve used to shut off all the gas to a building a solenoid-actuated automatic valve having a quick shut off function a flare type fitting a hand-operated device which provides for connecting and disconnecting an appliance to a gas supply

15. What is the expression for the maximum pressure to which any component or portion of the fuel system can be subjected: A. B. C. D.

maximum operating pressure ultimate stress pressure relief pressure maximum working pressure

16. Every person commits an offence against the TSS Act who: A. B. C. D.

contravenes the Act makes a false statement fails to comply with an authorization or all of the available choices

17. A valve train is a: A. combination of valves and regulators piped and wired in series B. combination of valves, controls, piping and tubing, downstream from the appliance manifold of which gas is controlled C. combination of valves, controls, piping and tubing, upstream from the appliance manifold of which gas is controlled D. combination of valves configured such that the gas can be controlled in a number of different ways 18. Where premises are connected to a supply of gas for the first time, no person shall initially activate an appliance until: A. the fuel distributor has been notified

B. the fuel distributor has examined and accepted the installation C. the owner has examined and accepted the installation D. the Technical Standards and Safety Authority has examined and accepted the installation

19. When an appliance is installed on a roof, the minimum clearance between the appliance and the edge of the roof shall be: A. B. C. D.

4 feet (1.3m) 6 feet(2.0m) 8 feet (2.5m) 10 feet(3.0m)

20. The Minister may make orders: A. B. C. D.

establishing qualifications for Inspectors regarding inspections by insurers establishing grades of gasoline all of the available choices

21. An appliance pressure regulator is: A. B. C. D.

located immediately downstream of the main burner located in the valve train of an appliance located immediately upstream of an appliance used to control the pressure of the gas delivered rot the customer

22. What is the name for a valve which is normally closed and allows flow in only one direction: A. B. C. D.

flow valve no-flow valve solenoid valve back check valve

23. A damper is a: A. B. C. D.

device used to keep a gasket moist and malleable plate or valve for regulating the flow of air or flue gas device used to cool and divert flue gases fixed flue gas diverter.

24. Which which of the following burners is NOT equipped with a mechanical device for supplying combustion air: A. B. C. D.

natural draft burner combustion burner power burner non-mechanical burner

25. Any contractor operating under the Gaseous Fuels Regulation is required to: A. B. C. D.

register as a contractor inform all employees to comply with the Act and regulations monitor all employees to ensure that they comply with the Act and regulations All of the available choices

26. In the case of a fuel related accident, the Director shall: A. B. C. D.

order and appropriate investigation supply medical assistance for all injuries prepare a cost estimate for the damages check the ic i drivers license and proof of insurance

27. Which of the following is covered in the B149.1 Natural Gas and Propane Installation Code: A. B. C. D.

marine and pipeline terminals underground storage systems installation of gas appliances propane used on boats

28. During an inspection by a TSSA Inspector, every person shall: A. B. C. D.

keep silent assist the inspector, but not be responsible to produce anything assist the inspector and produce anything where necessary vacate the premises

29. Where the Divisional Court hears an appeal of a Di ec A. B. C. D.

ruling, the C

decision is:

subject to appeal to the Supreme Court of Ontario subject to appeal to the Ministry of Consumer and Business Services final subject to appeal to the federal government

30. Vent sizing for central heating furnaces, boilers and water heaters that have an input of less than 400,000 Btu/h (120kW) shall be provided in accordance with: A. B. C. D.

clauses 8.2 & 8.3 of the B149.1 Natural Gas and Propane Installation Code clause 8.4 of the B149.1 Natural Gas and Propane Installation Code clause 8.14 of the B149.1 Natural Gas and Propane Installation Code Annex C of the B149.1 Natural Gas and Propane Installation Code

31. What is the term for an appliance which is supplied as a complete unit including burner, controls, and integral wiring: A. B. C. D.

package unit unit heater combination unit boiler

32. The installation of gas burning appliances in recreational vehicles shall be in accordance with: A. B. C. D.

CSA Standard Z240.4.1 CSA Standard Z240.4.2 CSA Code B139 CSA Code B149.2

33. Which word describes the phrase acce ab e to the authority having j i dic i A. B. C. D.

:

certified licensed approved endorsed

34. The maximum fine for an individual found guilty under the Technical Standards and Safety Act is: A. B. C. D.

$ 100.00 $ 25,000.00 one year in jail $ 50,000.00 and/or one year in jail

35. Which testing agency IS NOT recognized for certifying propane appliances in the province of Ontario: A. B. C. D.

Underwriters Laboratories Incorporated International Canadian Standards Association Transport Canada Underwriters Laboratories of Canada

36. Who is responsible for ensuring at the time of installation that there is proper and adequate venting and air supply for an appliance: A. the installer B. the gas distributor C. the owner

D. the local inspector

37. By covering a piece of wood with 1/4 (6 mm) of insulating millboard and 28 gauge (0.3mm) sheet metal, a person may reduce the side clearance of an appliance that requires 6 inches (150 mm) clearance from combustible material: A. B. C. D.

by 4 inches (100mm) by 4 inches (100mm) by 3 inches (75mm) by 3 inches (75mm)

38. Which of the following establishes minimum standards for the installation of gas appliances: A. B. C. D.

Natural Gas and Propane Installation Cod Underwriters Laboratories of Canada National Building Code Canadian Standards Association

39. Which of the following observations is true: A. appliances must be installed with the minimum 24 inches (600 mm) clearance on any side(s) where service is required B. appliances must be installed with the minimum 24 inches (600 mm) clearance on every side C. appliances installed outdoors must have a minimum 36 inches (600 mm) service clearance to the burner access panel only D. appliances must be installed with the minimum 36 inches (1 m) clearance on any side(s) where service is required 40. A G.2 Technician: A. may replace a defective residential automatic gas-fired water heater B. must advise the user of the appliance that a plumber is required to replace the defective automatic water heater C. may recharge add-on central air conditioner with refrigerant D. may design and install the duct work required for a new installation 41. What are the pressure test requirements for a piping or tubing installation that is to be supplied with gas at 2 psig (13.8 kPa) and that is less than 200 feet (60 m) in length: A. B. C. D.

15 psig (100 kPa) for 15 minutes 15 psig (100 kPa) for 60 minutes 50 psig (340 kPa) for 60 minutes 50 psig (340 kPa) for 180 minutes

42. Where in the B149.1 code book will a person find the table required to size a natural gas piping system made of Schedule 40 pipe and just to be operated at a pressure of 7 in w.c. (1.75 kPa) up to 14 in w.c., based on a pressure drop of 1 e.c. (250 Pa): A. B. C. D.

Annex A, table A.1 Annex A, table A.2 Annex A, table A.8 Annex A, table A.9

A.1 (M) A.2 (M) A.8 (M) A.9 (M)

Module 5 - Quiz 1. The resistance reading across a blown fuse should be: A. B. C. D.

0 volts 0 ohms 0 amps infinity

2. Where it has been determined that the voltage to a unit is approximately 115 volts, which range should an analog volt meter be set at? A. B. C. D.

0 - 120 v 0 - 250 v 0 - 600 v 0 - 1000 v

3. Atoms are said to be electrically neutral when they contain the same number of: A. B. C. D.

electrons and neutrons protons and neutrons protons and electrons electrons and ions

4. Which of the following statements is true? A. B. C. D.

Direct current electricity alternate polarity (i.e. +/-) regularly Direct current flows from the positive terminal to the negative terminal Batteries supply alternating current (AC) Direct current measurements are not polarity sensitive (i.e. black test probe must be on negative terminal)

5. Which of the following statements concerning ohmmeters is correct? A. B. C. D.

An ohmmeter must never be connected to a live circuit. An ohmmeter must always be connected to a live circuit. The ohmmeter scale on an analog meter is divided into equal increments. Using an ohmmeter requires the connection of only one lead.

6. If resistance is constant in a resistive circuit and there is no voltage surge, the current: A. B. C. D.

increases decreases remains the same fluctuates

7. The branch electrical circuit to a heating appliance maybe used to supply power to: A. B. C. D.

lighting in the furnace room other electrical devices as long as the total amp draw is less than 15 amps accessories necessary for the safe operation of the appliance other electrical devices as long as a 20 amp fuse is installed

8. On a 120 volt receptacle, the ground connection terminals are: A. B. C. D.

white green gold silver

9. How far into a junction box must conductors extend: A. B. C. D.

3 inches 6 inches 8 inches 10 inches

10. As the current increases in a conductor the magnetic field around the conductor: A. B. C. D.

increases decreases fluctuates remains the same

11. For current to flow through a wiring system there must be: A. B. C. D.

a difference in electrical pressure between two connected point a continuous pathway between two points of flow a circuit made of conducting material all of the available choices

12. The voltage reading across an open switch of an energized circuit should be: A. B. C. D.

the applied current the applied voltage zero volts zero ohms

Answer the following questions using the series circuit above. 13. What is the total current in this series circuit? A. B. C. D.

10 amps 3 amps 6 amps 4 amps

14. What is the total resistance in the circuit? A. 30 Ω B. 200 Ω C. 10 Ω

D. 2 Ω

15. What is the voltage drop across R1 ? A. B. C. D.

20 Volts 40 Volts 24 Volts 120 Volts

16. What is the voltage drop across R2 ? A. B. C. D.

80 Volts 5 Volts 120 Volts 60 Volts

17. What is the total voltage drop across this circuit? A. B. C. D.

30 Volts 120 Volts 10 Volts 240 Volts

18. Which statement is correct concerning a parallel circuit? A. B. C. D.

The total resistance of the circuit is the sum of each individual resistance in the circuit The total resistance of the circuit will be less than the smallest resistance in the circuit The current reading will be the same no matter where it is taken in the circuit Voltage drop across each load is less than the voltage supplied

19. The total current in a parallel circuit (i.e. taken at source) will be: A. B. C. D.

0 volts the supply amperage 0 amps the sum of the current passing through each branch circuit

20. The resistance reading across a good fuse will be: A. 0 volts B. 0 ohms

C. 0 amps D. infinity 21. When a voltage measurement is being taken on a DC circuit, the needle on the analog meter moves to below zero on the scale. What does this indicate? A. B. C. D. 22.

The meter is broken. The battery in the meter is dead. There is no voltage. The test leads are reversed. In a parallel circuit containing a 3 Ω a 7 Ω and a 10 Ω resistor, the current flow is:

A. B. C. D.

highest through the 3 Ω resistor highest through the 7 Ω resistor highest though the 10 Ω resistor equal through all three resistors

23. Which of the following conditions will allow current to flow through a circuit? A. An open switch B. A closed switch 24. 24 Materials that do not readily produce free electrons are called: A. B. C. D.

insulators conductors grounds ions

25. Which statement is correct? A. B. C. D.

A clamp-on ammeter must never be used on a live circuit. A clamp-on ammeter must pinch the wire or terminal for a proper reading. A clamp-on ammeter must be clamped around one conductor only. A clamp-on ammeter must be clamped around both conductors.

26. If a co-worker is suffering a shock from an electrical circuit and cannot let go of the circuit, the first action to take is to: A. B. C. D.

call the emergency response phone number. give the co-worker a quick push to free him or her from the circuit. disconnect the power to the electrical circuit. grab the closet object and shove the person away from the circuit.

27. What is the Btuh output of an electric heater rated at 15kW: A. B. C. D.

511 5,118 51,180 511,800

28. If the voltage drop across a load in a simple circuit is not the applied voltage, this indicates: A. B. C. D.

a poor connection in the circuit. there is more than one load wired in parallel with the tested load. the reading is normal all of the above

29. Which of the following statements concerning electrical conductors correct? A. B. C. D.

Armoured cable can only be used outdoors. A gouge in an electrical wire should be repaired with electrical tape. A junction box connector approved for the box and wire must be used. Wires should be bent around terminal connection screws in a counter clockwise direction.

30. Which of the following statements is true? A. B. C. D.

# 14 AWG electrical wire is approved for use on 30 amp circuits. # 14 AWG electrical wire is always stranded core for flexible use. # 14 AWG electrical wire is approved for use on 15 amp circuits. # 14 AWG electrical wire always has two conductor wires.

31. What is the term for an appliance which is supplied as a complete unit including burner, controls, and integral wiring: A. package unit B. unit heater C. combination unit D. boiler Using this diagram, please answer the following four questions:

32. What is the resistance reading across A in Figure 1? A. 0 B.

C. a measurable resistance D. 100,000,000 33. What is the resistance reading across R1 in Figure 1? A. 0 B. C. a measurable resistance D. 100,000,000 34. What is the resistance reading across C in Figure 1? A. 0 B. C. a measurable resistance D. 100,000,000 35. What is the resistance reading across D in Figure 1? A. 0 B. C. a measurable resistance D. 100,000,000 36. What is the Kilowatt output of an electric heater that has a 240 volt supply and draws 50 amps: A. 12 B. 120 C. 1,200 D. 12,000 37. Electrical current is measured in: A. volts B. amps C. ohms D. watts

Module 6 - Quiz 1. If the scale on a mechanical drawing is 1/8 - 1 0 then a line measuring 4 in length is actually: A. B. C. D.

32 inches 4 feet 8 feet 32 feet

2. The boiling point of water is 212*F or 100*C? A. True B. False 3. Equipment service bulletins are normally issued by the: A. B. C. D.

local utility or fuel supplier manufacturer Technical Standards and Safety Authority Canadian Standards Association

4. The word A. B. C. D.

mp om is used in man fac

e

literature to describe:

how a piece of equipment functions problems arising because of equipment venting problems arising because of equipment wiring abnormal operation of the equipment

5. Mechanical drawings are used to: A. give the building address, show the equipment location, piping layout, duct sizing and duct layout B. give the building address, locate the building on the site, location of adjacent structures, piping layout, and show equipment location C. give the building address, indicate the building size, show its elevations, list the mechanical equipment, and show its location, show all permits D. give the building address, show the owner's name, in alle name, permit numbers, the equipment list and the warranty

6. Using the graph below, on a roof with 12/12 pitch and no obstructions, the minimum vent height for a natural gas fired appliance is:

A. B. C. D.

2 feet 4 feet 6 feet 10 feet

7. A bill of ma e ial is a: A. B. C. D.

list sent by the manufacturer as a check list of the materials delivered to the site purchase order copy indicating the materials which were ordered list indicating the materials required to complete an installation list of all the materials used manufacturing the equipment

8. A broken or dotted line on a man fac A. B. C. D.

factory installed wiring a white conductor only an optional accessory field installed wiring

e

wiring diagram normally indicates:

9. Equipment wiring diagrams indicate which of the following? A. B. C. D.

supply voltage, wire size from panel, fuse size, internal wiring supply voltage, internal wiring, location of controls, field wiring supply voltage, fuse size, type of disconnect switch, factory wiring supply voltage, size of control wiring, location of gas valve, factory wiring

10. Equipment specifications indicate mainly: A. dimensions required to install the appliance, weight of the equipment, electrical characteristics, size and location of the vent outlet, piping inlet size, model number B. Size of building required to accommodate the equipment, parts list, weight of equipment, installation clearances, piping outlet size, serial number C. address of installation, required appliance output, electrical characteristics, weight of equipment, branch piping size, model number D. physical dimensions required to install the appliance, weight of the equipment, amount of fuel consumed, CO content of the fuel consumed, electrical characteristics, size and location of the event outlet

Module 7 - Quiz 1. When asked to remove footwear at the door of a customer, the best approach is: A. B. C. D.

to comply and take off your boots and leave them at the door to refuse and push past the customer in the interest of safety to offer to wear boot covers after explaining that they are safety boots to remove you boots and wear slippers instead

2. When listening to a customer s concerns, the best approach is: A. B. C. D.

to be sympathetic to take notes to explain in terms they will understand all of the above

3. Of the following list which choice represents a positive customer relations action: A. B. C. D.

Using a washing machine as a workbench Cleaning up waste created by your actions Criticizing their taste in music Advising them to call head office for answers

Module 8 - Quiz Using the information given below and Figure 2 of a multiple appliance piping system for natural gas, using Schedule 40 steel pipe, answer the following questions. -Natural Gas Service – 7 W.C. TO 14 W.C. -Heater input = 200,000 Btuh each -Duct furnace input = 400,000 Btuh -There are two boilers manifolded together at each location. Each boiler has an input of 250,000 Btuh

1. The required pipe size for section A of the main supply line is: A. B. C. D.

2 2 1/2 3 4

2. The require pipe size for section E of the main supply line is: A. 2 B. 2 1/2

C. 3 D. 4

3. The required pipe size for section G of the main supply line is: A. B. C. D.

1 1 1/4 1 1/2 2

4. The required pipe size for the branch line supplying the duct furnace is: A. B. C. D.

1 1 1/4 1 1/2 2

5. The required size for section s D and M supplying the boilers is: A. B. C. D.

1 1 1/4 1 1/2 2

6. The required pipe size for the branch lines supplying the unit heaters is: A. B. C. D.

1 1 1/4 1 1/2 2

7. The required pipe size for section B of the sub-supply line is: A. B. C. D.

1 1/2 2 2 1/2 3

8. The required pipe size for section K of the main supply line is: A. 1 B. 1 1/4 C. 1 1/2

D. 2 9. What is the maximum horizontal spacing of supports for NPS 1 1/4 inch gas pipe in a home? A. B. C. D.

6 feet 8 feet 10 feet 15 feet

(2m) (2.5m) (3m) (5m)

10. When purging a piping or tubing system to the outdoors, the minimum distance the purging line may terminate from either a building opening or air intake is: A. B. C. D.

3 feet 6 feet 10 feet 20 feet

(1m) (2m) (3m) (6m)

11. If a gas leak is suspected, the best way to find the location of the gas leak is to: A. B. C. D.

install a manometer to determine the rate of loss use a soap and water solution to perform a bubble test use a lighted mated in well-ventilated areas only isolate sections of the system and install pressure gauges at each section

12. Propane piping of 200 ft. (61m) in length or less operating at a pressure over 2 psig (14kPa) but not more than 33 psig (230 kPa) shall be tested at a minimum of: A. B. C. D.

5 psig (34 kPA) for 30 minutes 15 psig (100 kPa) for 15 minutes 15 psig (100 kPa) for 60 minutes 50 psig (340 kPa) for 60 minutes

13. The actual pressure drop in a gas line is measured by subtracting the: A. B. C. D.

static pressure at the appliance from the static pressure at the gas meter outlet static pressure at the appliance from the working pressure at the gas meter outlet working pressure at the appliance from the working pressure at the gas meter working pressure at the appliance from the static pressure of the gas meter outlet

14. What is the minimum depth a gas line must be buried under a lawn? A. 12 in. (300 mm) B. 15 in. (380 mm) C. 18 in. (460 mm)

D. 20 in. (500 mm) 15. Pipe fittings in gas piping systems shall be made of: A. B. C. D.

malleable iron of cast iron cast or wrought iron cast iron or steel steel or malleable iron

Propane

Answer the questions below based on the following information. In the diagram above propane gas is being supplied to a building, from a supply tank. The first stage regulator is mounted on the tank under the protective dome. The first stage regulator is operating at 10 psi and plastic pipe is being used between the first and second stage regulators. There is no fittings causing resistance in the 10 psi line. The second stage regulator is operating at 11 inches water column and steel pipe is being used from the second stage regulator to the appliances. Boiler 1 = 200,000 BTU Boiler 2 = 289,000 BTU Space Heater 1 = 90,000 BTU Space Heater 2 = 120,000 BTU

16. What is the required minimum pipe size for the plastic pipe labeled A ? (No LER calculation required) A. 2 inch B. 1 inch C. 3/4 inch D. 1/2 inch 17. What is the required minimum pipe size for the steel pipe section labeled B ? A. 1.25 inch B. 1.5 inch C. 1 inch D. 2 inch

18. What is the required minimum pipe size for the steel pipe section labeled C ? A. 0.5 inch B. 0.75 inch C. 1 inch D. 1.5 inch 19. What is the required minimum pipe size for the steel pipe section labeled D ? A. 0.5 inch B. 0.75 inch C. 1 inch D. 1.5 inch 20. What is the required minimum pipe size for the steel pipe section labeled E ? A. 0.5 inch B. 0.75 inch C. 1 inch D. 1.5 inch 21. What is the required minimum pipe size for the steel pipe section labeled F ? A. 0.5 inch B. 0.75 inch C. 1 inch D. 1.5 inch

22. If the gas / air velocity is too great at the port of an atmospheric burner, the flame will have a tendency to: A. flash-back B. lift off the port C. be too large D. be too small

Module 9 - Quiz 1. Spillage of flue gasses at the appliance draft diverter is an indication of: A. B. C. D.

an updraft condition in the appliance venting system under firing normal operation a restriction in the venting system

2. A yellow flame at an atmospheric burner could be the result of: A. B. C. D.

low gas pressure insufficient primary air pilot outage excessive primary air

3. Is the flame pattern correct in the following diagram? if not, how would you correct it?

A. B. C. D.

Pattern is acceptable; no correct needed Pattern is not correct; reduce the primary air and/or gas pressure Pattern is not correct; drill out the centre ports Pattern is not correct; fully close the air shutter

4. Which of the following best describes the thermopile (or powerpile) as used in a gas appliance? A. A thermopile or powerpile is a normally closed switch that controls the temperature of the water inside a boiler. B. A thermopile, or powerpile consists of multiple thermocouples joined together at one end and connected in series to generate more voltage than a single thermocouple.

C. A thermopile or powerpile is a control switch used on air heating systems to sense air temperature. D. A thermopile is a flame sensing device which operates on 27-30 millivolts.

5. An orifice for a propane appliance with the same input as a natural gas appliance is: A. B. C. D.

the same size as the natural gas orifice smaller than the natural gas orifice larger than the natural gas orifice interchangeable with a natural gas orifice

6. A draft hood will: A. B. C. D.

eliminate back drafts coming down a chimney eliminate negative pressure in a building prevent positive pressure in a building prevent a down draft from entering the appliance

7. A noisy, lifting, blowing pilot flame is usually the result of: A. B. C. D.

the recirculation of combustion products excessive gas to the main burner a high percentage of H2O in the flue gases excessively high pilot gas pressure

8. A residential central forced air gas furnace heating system works on the principle of drawing: A. cold return air across the burner and expelling it into the conditioned area B. cold air from central areas of the house, then enforcing this air across a heat exchanger and back into the house C. cold supply air from central areas of the house then forcing it across a heat exchanger and back into the house through the return air ducts D. conditioned air from outside of the house then forcing it across a heat exchanger and returning it back into the house through the supply air ducts 9. What is TEMPERATURE RISE in a forced warm air furnace? A. B. C. D.

the temperature difference between the outdoor air and the return air the temperature difference between the supply air and the return air the temperature difference between the outdoor air and the supply air the temperature difference between the return air and the flue gas

10. Atmospheric burners are designed to operate under:

A. B. C. D.

normal atmospheric pressure with low gas pressure high air pressure with low gas pressure atmospheric pressure with high gas pressure compressed air pressure with high gas pressure

11. The burner illustrated above us a: A. B. C. D.

Atmospheric burner Nozzle mix burner Premix burner Raw gas burner

12. Which method of heat transfer is used in a clothes dryer? A. B. C. D.

conduction radiation convention thermal

13. An indication of excessive primary air is a: A. B. C. D.

quenched flame lifting flame luminous flame yellow flame

14. Which of the following statements is true regarding the venting of gas-fired appliances? A. Non-Positive (negative or neutral draft) venting for gas fired appliances must have completely sealed joints in vent pipes. B. Positive pressure (power vented) gas fired appliances must have completely sealed joints in vent pipes. C. Natural draft appliances are not required to be vented, they draft naturally without venting.

D. Appliances with a positive event static pressure draw air in from unsealed joints to assist with venting action.

15. Boilers transfer heat to water through: A. B. C. D.

conduction radiation convection a latent process

16. What could result if a flame is adjusted with too little primary air? A. B. C. D.

flame quenching flame dilution flame life a luminous flame

17. A direct vent appliance: A. B. C. D.

vents the products of combustion into the room vents to the outdoors and provides combustion air from the outdoors utilizes a draft hood must include a barometric control

18. If the return and air supply plenum are both located on the top of the furnace, the furnace is a: A. B. C. D.

high boy low boy counter flow, or down flow horizontal

19. A high intensity surface combustion infrared heater requires: A. B. C. D.

no vent a class B vent a class BW vent a class C vent

20. If the gas /air velocity is too great at the port of an atmospheric burner, the flame will have a tendency to: A. flash-back

B. lift off the port C. be too large D. be too small

21. Conduction is: A. B. C. D.

the transfer of heat by the movement of fluids the transfer of heat from particle to particle the transfer of heat by electromagnetic waves the transfer of heat through evaporation

22. Most undefined storage water temperature controls utilize: A. B. C. D.

liquid-filled capillary tubes bimetal sensors vapour-filled sensors rode and tube sensors

23. A recessed wall furnace may use which of the following? A. no vent B. BW vent C. C vent D. A vent 24. No one may initially activate a 300,000 Btuh input gas appliance connected to a piping system: A. B. C. D.

unless the installation is inspected by a TSSA Inspector unless the installation is inspected by a G.2 technician or higher unless the installation is inspected by a G.3 technician or higher unless the installation is inspected by a GP technician or higher

25. Infrared and tube heaters transfer heat by: A. B. C. D.

conduction radiation convention a latent process

.Which of the following lists best describes the key safety categories to be considered by a Gas Technician? A. personal, site, tools, equipment, others, OHSA, deadlines B. personal, tools, equipment, others, deadlines, Ontario Gas code requirements C. personal, tools, equipment, others, site, OHSA, Ontario Gas Utilization Code D. personal, tools, equipment, others, safety rule books, Ontario Gas Utilization Code . How would a gas technician demonstrate a concern for the safety of others? A. By always wearing approved work boots, hard hat and safety glasses. B. By demonstrating the correct use of a new tool to a co-worker. C. By letting others climb ladders first. D. By letting others learn from their mistakes. . What should a gas technician do when a new piece of equipment is introduced for use? A. Carefully examine the equipment and determine how to use it properly. B. Ask a co-worker to help determine how to use it properly. C. Get a copy of the user's manual and read it before using the equipment. D. Refuse to work with new equipment until someone else has used it. . What does OHSA stand for? A. Ontario Health Standards Act B. Ontario Health Safety Act C. Occupational Health & Safety Act D. Occupational Health Standards Act. . Which of the following regulates workplace safety? A. The Province of Ontario B. The Ontario Gas Utilization Code C. The National Fire Code D. The National Building Code . What should MSDS sheets be used for by a technician? A. To be aware of flammable, corrosive, or explosive substances. B. To know what materials are available for the technicians use. C. To know the best brand of product to purchase. D. To be aware of the best source of lubricants for machinery on site. . Which phrase is true? A. The Ontario Gas Utilization Code requires a technician to report a hazardous installation within three working days of completion. B. The Occupational Health and Safety Act requires that hazards be reported within hours. C. The industry does not demand that hazards be reported for correction. D. The hazard is the responsibility of the person who is aware of it. . Which of the following is true? A. When lifting, it is best to use your back muscles as they are the strongest. B. When lifting, it is best to lift by bending your knees and using your leg muscles. C. When lifting with someone else you should be back to back. D. When lifting a heavy load that is too heavy, lift and carry it small distances at a time.

. Why should garbage and debris be removed from a job site? A. To present a neat appearance. B. To prevent possible slips, trips or falls. C. To reduce the possibility of tool loss in debris. D. To reduce the likelihood of rodents on the job site. . Which of the following is the safest situation? A. Debris is stacked against equipment to be worked on. B. The pathway to equipment is under water. C. Dim light in work areas making it difficult to read labels on equipment. D. Scrap metal is stacked in a corner away from your work area. . An employer is: A. responsible for ensuring that safety instruction is provided to workers. B. not responsible for ensuring that safety instruction is provided to workers. C. responsible for ensuring that workers arrive safely on the job site. D. responsible for providing all safety clothing to workers.

. Which of the following is true? A. Workers do not have to wear heard hat off a construction site, even if instructed to do so by the employer. B. Workers must wear the protective clothing that the employer instructs them to wear on the job site. C. Workers do not have to be aware of the contents of the Occupational Health and Safety Act D. Unnecessary running or rough or boisterous conduct on job sites is not prohibited by the Occupational Health and Safety Act. . The Workers Compensation Board Act says that in all cases of injury or disease, an employer must: A. make sure first aid is given within two hours. B. make sure there is a record of the first aid treatment or any advice given to the worker. C. complete and keep a form if more than first aid treatment or advice is needed. D. notify worker s family immediately. . According to the Workers Compensation Board Act which of the following statements is part of the worker s obligation in all cases of injury/disease? A. Obtain first aid promptly. B. Notify the employer of any injury within eight hours. C. Notify the employer of the possible onset of a work-related disease/condition within two working days. D. Find a doctor or qualified practitioner who will give a second opinion concerning the injury.

. How many classes of fire extinguishers are listed? A. three B. four C. five (Class A, B, C, D, K.) D. six . Which of the following are the key pieces of personal protective equipment? A. hard hat, gloves, ear plugs, dust mask, safety glasses, work boots, face shields B. ladders, hand tools, power tools C. protective clothing, hand tools, face shields, hats D. grounded extension cords, safety glasses, safety boots, hard hat

. What type of fastener would you use to join two electrical conductors? A. electrical coupling B. BX connector C. marrette D. electrical tape . The fastener used to connect a hose to a fan coil unit is: A. a gear clamp. B. copper bailing wire. C. electrical tape. D. a grappler bar. . Shot for powder activated guns is stored: A. in a locked, secure compound. B. in a dry, secure location. C. in the upright position in a secure compound. D. in a locked refrigerated cooler. . What is the volume of a room measuring A. square feet B. cubic feet C. cubic feet D.

,

x

x ?

square feet

. What is the area of a rectangular air supply opening measuring A. . square feet B. . cubic feet C. cubic inches D. 0 square inches

x

?

. What is the purpose of a drill gauge? A. To measure the diameter of a drill bit. B. To measure the diameter of a drill. C. To measure the length of a drill. D. To measure the length of a drill bit. . To determine the indicated gas pressure on a water-filled U tube manometer. A. read the amount of water column displaced on the pressure side. B. read the amount of water column displaced on the atmospheric side. C. read the amount of water column displaced on the pressure side and add it to the amount displaced on the atmospheric side. D. read the amount of water column displaced on the pressure side and subtract it from the amount displaced on the atmospheric side. . A reading of . w.c. equals: A. / psig. ( . kPa) B. / psig. ( . kPa) C. / psig. ( . kPa) D. psig. ( . kPa) . The boiling point of water is: A. F (- C) B. F ( C) C. F( C) D. °F ( 00°C) . How should an electric drill be disconnected? A. By pulling on the drill s cord. B. By pulling the plug at the outlet. C. By using a pair of insulated channel lock pliers. D. With the chuck key. . A carbon bit is used to drill into: A. steel. B. wood. C. iron. D. black iron. . A carbide bit is used to drill into: A. stainless steel. B. wood. C. plastic. D. concrete. . Lead shields are generally used to anchor fasteners into: A. steel. B. wood. C. plastic. D. concrete.

. Copper wire should be skinned with: A. a knife. B. pliers. C. side cutters. D. a wire stripper . By definition, the specific gravity of a gas (vapour) is: A. the weight of the gas as compared to the weight of air. B. the weight of the gas as compared to the weight of an equal volume of air. C. the volume of the gas compared to the equal weight of an equal volume of air. D. the volume of the gas as compared to the weight of air. . The specific gravity of propane vapour is: A. greater than that of air. B. less than that of air. C. the same as that of natural gas. D. less than that of natural gas. . The specific gravity of propane is: A. . w.c B. w.c C. . " w.c D. . w.c. . The lower and upper flammable limits of propane are: A. . - . B. . - . C. . - . D. . - . . The heat content of cubic foot of propane is approximately: A. , Btu B. , 00 Btu C. , Btu D. , Btu . Propane and natural gas are composed mainly of which of the following elements? A. carbon and nitrogen B. carbon and hydrogen C. carbon and oxygen D. carbon and sulphur

A. B. C. D.

. The flame temperature of propane is approximately: F( C) C( F) 0 °F ( 0 0°C) C( F).

. The ignition temperature of propane is: A. 0 °F - 0 0 °F ( F°C) B. CC. ( FF) C. FF. ( CC) D. CC. ( F– F) . The relative density Propane is: A. equal to the relative density of air. B. times the relative density of air. C. / times the relative density of air. D. the relative density of air. . The boiling point of propane at atmospheric pressure is: A. - °F (- . °C) B. F (- . C) C. F F (- . C) D. F ( C) . When propane changes from a liquid to a vapour, it expands and its volume increases by: A. times. B. times. C. times. D. 0 times. . One imperial gallon of propane weighs: A. . pounds. B. . pounds. C. . pounds. D. . pounds. . When one pound of propane burns, it releases approximately: A. , Btt u. B. , Btu. C. , 00 Btu. D. , Btu. . The products of propane combustion are primarily. A. H and H and heat. B. H and CO and heat. C. H 0, CO and heat. D. H and C and heat. . As the temperature of liquid propane in a tank increases, the vapour pressure of the propane: A. increases. B. decreases. C. remains the same. D. fluctuates.

. The amount of C A. . cu. ft. B. .0 cu. ft. C. . cu. ft. D. . cu. ft.

produced per cubic foot of propane burned is:

. The amount of air required to BURN cubic foot ( . propane is approximately: A. . cu. ft. ( . cu. m.) B. . cu. ft. ( . cu. m.) C. . cu. ft. ( . cu. m.) D. .0 cu. ft. (0. cu. m.)

cu. m.) of

. The air found in the products of combustion after the complete combustion of natural gas or propane is called: A. primary air B. secondary air C. excess air D. dilution air . Which of the following is toxic? A. natural gas B. propane gas C. carbon monoxide D. carbon dioxide . Air that is mixed with fuel prior to ignition is called: A. primary air. B. secondary air. C. excess air. D. theoretical air. . Air that is mixed with fuel at the point of combustion and around the flame is : A. primary air. B. secondary air. C. excess air. D. theoretical air. . Carbon monoxide is a product of the incomplete combustion of: A. nitrogen. B. oxygen. C. a hydrocarbon. D. an inorganic compound. . Air is about: A. nitrogen and B. nitrogen and C. nitrogen and D. 0 nitrogen and 0

oxygen oxygen oxygen oxygen

. A luminous flame is caused by: A. premixing air and fuel prior to combustion. B. not premixing air and fuel prior to combustion. C. a low ignition temperature. D. the presence of carbon monoxide. . A Bunsen flame is caused by: A. premixing air and fuel prior to combustion. B. not premixing air and fuel prior to combustion. C. a low ignition temperature. D. the presence of carbon monoxide. . The specific gravity of natural gas is: A. greater than that of air. B. less than that of air. C. the same as that of propane. D. greater than that of propane. . Natural gas and propane are composed mainly of: A. carbon and nitrogen. B. carbon and hydrogen. C. carbon monoxide and nitrogen. D. carbon dioxide and hydrogen. . The flame temperature of natural gas is approximately: A. F( C) B. C( F) C. 00 °F ( °C) D. C( F) . The theoretical boiling point of natural gas at atmospheric pressure is: A. °F (°C) B. - F (C) C. F (- C) D. F ( C) . The products of complete combustion of natural gas and propane are primarily: A. hydrogen, water (vapour), and heat. B. carbon, carbon monoxide, and heat. C. water (vapour), carbon dioxide, and heat. D. hydrogen, carbon, and heat. . The amount of air required to bum cubic foot of natural gas is approximately: A. . cu. ft. ( . cu. m.) B. 0.0 cu. ft. (0. cu. m.) C. . cu. ft. ( . cu. m.) D. . cu. ft. ( . cu. m.)

. The odorant added to natural gas for detection purposes is: A. sulphur. B. mustard. C. carbon dioxide. D. mercaptan. . What is the approximate ignition temperature of natural gas? A. F( C) B. , 00°F( °C) C. , F( , C) D. , F( C) . The specific gravity of natural gas is: A. 0. 0 B. . C. . D. . . The major constituents of flue gases after the proper combustion of natural gas in air are: A. CO, H , N , excess air, and heat. B. H , N , primary air, and heat. C. C0 , H 0, N , 0 , and heat. D. , CO, N , H , and heat. . A Bunsen flame is characterized by its: A. blue appearance. B. yellow appearance. C. orange appearance. D. green/orange appearance. . The two main hydrocarbons which form natural gas are: A. methane and ethane. B. butane and propane. C. ethane and butane. D. methane and propane. . What theoretical gas to air ratio is necessary to achieve perfect combustion with an atmospheric natural gas burner? A. part of natural gas to 0 parts of air B. parts of natural gas to parts of air C. parts of natural gas to parts of air D. parts of natural gas to part of air . Carbon monoxide is produced through: A. perfect combustion. B. complete combustion with excess air present. C. incomplete combustion. D. incomplete mixing of theoretical air and primary air.

. The products of complete combustion of natural gas in air are: A. carbon monoxide, water vapour, and heat B. carbon dioxide, water vapour, and heat C. aldehydes, water vapour, and heat D. nitrous oxide, water vapour, and heat . If a natural gas flame is adjusted to produce more than A. carbon monoxide may be produced. B. combustion efficiency will decrease. C. the flame will be very noisy and will lift off of the burner. D. there will be little overall effect.

carbon dioxide:

. What could result if a flame is adjusted with too much primary air? A. flame quenching B. a luminous flame C. flame lift D. flame dilution . Carbon Dioxide and Nitrogen are: A. explosive gases. B. inert gases. C. neutralizers. D. toxins. . Natural gas is A. ethane. B. pentane. C. methane. D. butane.

to

:

. How much air is required to bum , A. cu.ft. ( . cu. m.) B. , cu.ft. ( . cu. m.) C. 0,000 cu.ft. ( . cu. m.) D. , cu.ft. ( . cu. m.)

cubic feet of natural gas per hour?

. One boiler horsepower is approximately: A. , Btuh ( . kW). B. , Btuh ( . kW). C. ,000 Btuh ( 0 kW). D. , Btuh ( kW). . Two undesirable products of incomplete combustion are: A. CO and aldehydes. B. CO and N . C. C and aldehydes. D. CO and heat.

. Which substance is inert and passes through the combustion zone absorbing heat during the combustion process? A. carbon dioxide B. ethyl mercaptan C. oxygen D. nitrogen . The relative density of liquid propane is approximately: A. 0. B. . C. . D. . . Propane is a: A. manufactured gas. B. hydrocarbon. C. distillate fuel. D. naphthalene fuel. . At A. . B. . C. . 0 D. .

F(

. C) a pound of propane produces how many cubic feet of gas?

. Propane shall have a distinctive odour content to ensure it is readily detectable in the atmosphere down to concentrations of: A. of the lower explosive limit. B. 0 of the lower explosive limit. C. of the upper explosive limit. D. of the upper explosive limit. A. B C. D.

. In a natural gas and air mixture, what are the approximate lower and upper limits of flammability? to to to to

. Carbon monoxide is: A. an inert gas which is heavier than air. B. an inert gas which is lighter than air. C. a toxic gas which is combustible. D. a toxic gas which is non-combustible. . The heat content of cubic foot of natural gas is approximately: A. ,000 Btu B. , Btu C. , Btu D. , Btu

. How often should a fire extinguisher be inspected ? A. Once a year B. Once every years C. Once every years D. Once every years . Which organization is responsible for administering fuel regulations for the installation of gas and oil appliances in Ontario: A. Technical Standards and Safety Authority B. Canadian Gas Association C. Energy Mines Resources D. Canadian Standards Association . Which of the following are accredited to certify gas appliances, equipment, and accessories: A. Canadian Gas Association, Underwriters' Laboratories of Canada, the Canadian Standards Association, and the Technical Standards and Safety Authority B. Canadian Gas Association, Underwriters Laboratories of Canada, and the local utility C. Canadian Gas Association, Underwriters Laboratories of Canada, and the Propane Gas Association D. Canadian Gas Association, Underwriters Laboratories of Canada, and the Ministry of Energy Mines and Resources . Which of the following is the ultimate authority under The Technical Standards and Safety Act as it applies to the installation of natural gas propane appliances and equipment: A. Federal Government B. Ontario Government C. National Energy Board D. Ontario Ministry of Energy . Propane cylinders used in Ontario must be manufactured and approved to the requirements established by: A. Transport Canada B. The Compressed Gas Association and the Ministry of Energy C. The Propane Gas Association of Canada and the Ontario Propane Association D. The Ontario Propane Association and the Compressed Gas Association . The requalification of refillable propane cylinders used in Ontario must be done in accordance with the procedures for cylinders as established by the: A. Ministry of Transportation of Ontario B. Compressed Gas Association C. Propane Gas Association D. Ontario Propane Association . Which organization registers certified gas and oil technicians in Ontario? A. The Canadian Standards Association B. The Ministry of Energy C. The Canadian Gas Association D. The Technical Standards and Safety Authority

. A steam boiler shall conform to the requirements of which of the following agencies or organizations: A. The Technical Standards and Safety Authority B. The Heating, Refrigeration and Air Conditioning Institute of Canada C. The American Society of Mechanical Engineers, Technical Standards Division D. The Interprovincial Gas Advisory Council . The section of the Ontario Gas Utilization Code allowing a psi ( . tubing system operating at psig ( . kPa) is: A. B. C. D. . Propane cylinders manufactured in Canada after January , marked to the specifications of: A. The Boiler and Pressure Vessels Code B. The Canadian Standards Association C. Transport Canada D. The Ministry of Consumer and Business Services . Which of the following is covered in the B A. marine and pipeline terminals B. underground storage systems C. installation of appliances D. propane used on boats

kPa) drop in a

are to be built and

. installation code:

. Which of the following is covered in the B . installation code: A. installation of feedstock gas in chemical plants B. installation of venting systems C. petroleum refineries D. distribution pipelines .The holder of a G. certificate is permitted to work: A. only on appliances with inputs under , Btuh B. only on appliances with inputs up to , Btuh C. only on appliances with inputs from , Btuh. to , D. on appliances with any input in vapour phase

,

Btuh

. What action shall a person holding a gas technician certificate take, if an installation does not conform to the requirements of the Gaseous Fuels Regulation but doesn t present an immediate danger: A. the person shall immediately turn off the supply of gas to the appliance B. the person shall turn off the supply of gas to the appliance and lock the gas meter C. the person shall notify the distributor and the owner in writing of the condition D. the person shall inform the owner that the code infraction should be attended to

. A G Technician is allowed to: A. activate all new appliances B. initially activate appliances up to , Btuh input C. reactivate existing installations of appliances up to 00,000 Btuh D. activate residential appliances only . What is a Category I Appliance: A. an appliance with a power burner B. a natural gas or propane-fired water heater or central furnace C. an appliance that operates with a non-positive vent static pressure and a flue loss of not less than D. an appliance that operates with a positive vent static pressure and a flue loss of not less than . What is a Category III Appliance: A. an appliance with a power burner B. a natural gas or propane-fired water heater or central furnace C. an appliance that operates with a non-positive vent static pressure and a flue loss of not less than D. an appliance that operates with a positive vent static pressure and a flue loss of not less than . What is a Category IV Appliance: A. an appliance with a power burner B. a natural gas or propane-fired water heater or central furnace C. an appliance that operates with a positive vent static pressure and a flue loss of less than D. an appliance that operates with a positive vent static pressure and a flue loss of not less than . What is a Category II Appliance: A. an appliance that operates with a non-positive vent static pressure and a flue loss of less than B. an appliance with a power burner C. an appliance requiring a separate combustion air supply D. an appliance that operates with a positive vent static pressure and a flue loss not less than . Which term is used to describe a stationary device used to divert the flow of flue gases: A. baffle B. gas burner C. automatic vent damper D. air shutter . What is the name of the part of a piping or tubing system which conveys gas from the main supply piping, tubing, or header to an appliance or appliances: A. header B. branch line C. gas main D. individual feed line

. Which code expression is used to describe a structure used in connection with direct trade or service to the public: A. service building B. industrial building C. commercial building D. institutional building . Which code expression describes a building used in connection with production or process work, or with storage or warehousing: A. warehouse B. utility building C. process building D. industrial building . Which of the following code expressions describes a building used by a gathering of persons for civic, political, travel, religious, social, educational, recreational, or like purposes, or for the consumption of food and drink: A. commercial building B. assembly building C. industrial building D. care or detention occupancy building . Which burner supplies combustion air at sufficient pressure to overcome the resistance of the burner only: A. power burner B. combustion burner C. forced draft burner D. fan assisted burner . Which of the following burners is NOT equipped with a mechanical device for supplying combustion air: A. natural draft burner B. combustion burner C. power burner D. non-mechanical burner . Which burner supplies combustion air with a mechanical device such as a fan or blower at sufficient pressure to overcome the resistance of the burner and the appliance: A. mechanical burner B. fan assisted burner C. high pressure burner D. forced draft burner . Which term is used to describe an appliance intended to supply hot liquid or vapour for space heating, processing, or power purposes: A. water heater B. commercial water heater C. space heater D. boiler

. Which type of appliance has the combustion products or flue gases mixed with the medium being heated: A. direct fired appliance B. space heater C. immersion appliance D. indirect fired appliance . A damper is a: A. device used to keep a gasket moist and malleable B. plate or valve for regulating the flow of air or flue gas C. device used to cool and divert flue gases D . Which type of appliance is constructed so that all the combustion air is supplied directly from, and the products of combustion are vented directly to the outdoors by independent enclosed passageways connected directly to the appliance: A. direct vent appliance B. indirect fired appliance C. indoor / outdoor appliance D. direct fired appliance . Which term is used to describe the natural draft of the chimney measured at or near the base of the chimney: A. static pressure draft B. neutral pressure point draft C. base pressure draft D. chimney draft . Which type of draft is produced by a device upstream of the combustion zone of an appliance: A. pre draft B. forced draft C. induced draft D. atmospheric draft . Which type of draft is produced by a device downstream of the combustion zone of an appliance: A. pre draft B. forced draft C. induced draft D. atmospheric draft . Which of the following is an appliance draft control device: A. a baffle used to control air to a burner B. a control used to control air for combustion C. a draft hood or draft regulator D. a variable damper in the circulating air supply system . What is the expression for a housekeeping unit, used or intended to be used as a domicile by one or more persons, and usually containing cooking, eating, living, sleeping, and sanitary facilities: A. residential occupancy B. dwelling unit C. bed-sitting room D. non-commercial building. fixed flue gas diverter

. What is the name of the device that is installed either externally or internally to a venting system to extract heat from flue gases: A. draft hood B. draft control device C. heat diverter D. heat reclaimer . An intermittent ignition source: A. continues to function during the entire period that the flame is present B. ceases to function after the initial ignition period C. always functions, regardless if there is a call for heat D. is manually activated . An interrupted ignition source: A. continues to function during the entire period that the flame is present B. ceases to function after the trial for ignition period C. always functions, regardless if there is a call for heat D. is manually activated . Which type of appliance does not have the flue gases mixed with the medium being heated: A. direct-fired appliance B. non vented space heater C. immersion appliance D. indirect fired appliance . What is the expression for the maximum pressure to which any component or portion of the fuel system can be subjected: A. maximum allowable operating pressure B. ultimate stress pressure C. relief pressure D. maximum working pressure . What is the term for an appliance which is supplied as a complete unit including burner, controls, and integral wiring: A. package unit B. unit heater C. combination unit D. boiler . Which type of pilot burns without turndown throughout the entire time the burner is in service, whether the main burner is firing or not: A. continuous pilot B. interrupted pilot C. intermittent pilot D. expanding pilot

. Which type of pilot burns at low turndown throughout the entire time the burner is in service, whether or not the main burner is firing, except that upon a call for heat, the fuel flow to the pilot is automatically increased to produce a flame which will reliably ignite the main burner fuel: A. turndown pilot B. throttling pilot C. expanding pilot D. cycling pilot . Which type of pilot is supervised by a primary safety control which must sense the presence of the pilot flame prior to gas being admitted to the main burner: A. proved pilot B. flame safeguard control C. intermittent pilot D. monitored pilot system . What is the term for a device that is installed between the appliance and the vent termination and provides mechanical draft: A. mechanical inducer B. power burner C. vent exhauster D. power venter . A relief device in a piping system is a/ an: A. device used to divert the flow of gas in the event of a runaway condition B. device used to relieve high temperatures that could cause over-pressure C. device designed to open to prevent a rise of gas pressure in excess of a specified value due to emergency or abnormal conditions D. assembly installed in the outlet plenum of a forced air furnace, which opens in the event of high static pressure . What is meant by purging a pipe system: A. painting the pipe, or identifying it with markings or yellow bands (tape) B. reaming the ends of the pipe to eliminate all burrs C. filling the piping with nitrogen or carbon dioxide to ensure there is no air trapped within D. replacing the existing (gaseous or liquid) fluid in the piping or tubing with a desired fluid . Which type of burner is equipped with a constant ignition source and a flame arrestor and is intended to burn the escaping gas during operations to replace the air in piping with natural gas or propane: A. premix burner B. power burner C. conversion burner D. purge burner . A quick-disconnect device is: A. an emergency shut off valve used to shut off all the gas to a building B. a solenoid-actuated automatic valve having a quick shut off function C. a flare type fitting D. a hand-operated device which provides for connecting and disconnecting an appliance to a gas supply

. An appliance pressure regulator is: A. located immediately downstream of the main burner B. located in the valve train of an appliance C. located immediately upstream of an appliance D. used to control the pressure of the gas delivered to the customer . What is the term for a device used to control and maintain within acceptable limits, a uniform outlet pressure: A. pressure control B. pressure transducer C. pressure regulator D. uniform pressure device . What is the term for a pressure regulator installed in a piping or tubing system downstream of the service regulator and upstream of the appliance regulator: A. appliance pressure regulator B. master regulator C. emergency shut off regulator D. system regulator . Which expression best describes a control intended to prevent an unsafe condition of temperature, pressure or liquid level: A. roll out switch B. safety limit control C. fan control D. high / low pressure switch . What is the name for a valve which is normally closed and allows flow in only one direction: A. flow valve B. no-flow valve C. solenoid valve D. back check valve . What is the name for a valve designed to close when the liquid or vapour passing through it exceeds a prescribed flow rate as determined by a pressure drop across the valve: A. maximum capacity valve B. pressure limiting valve C. excess flow valve D. differential pressure valve . What is the B . term for an automatic valve that has a closing time of less than seconds upon being deenergized: A. quick shut off valve B. fast closing valve C. safety shut off valve D. second valve

. Which valve automatically shuts off the supply of gas when de-energized by a combustion safety control, safety limit control, or the loss of the actuating medium: A. emergency shut off valve B. safety shut-off valve C. main shut-off valve D. test firing valve . A valve train is a: A. combination of valves and regulators piped and wired in series B. combination of valves, controls, piping and tubing, downstream from the appliance manifold by which gas is controlled C. combination of valves, controls, piping and tubing, upstream from the appliance manifold by which gas is controlled D. combination of valves configured such that gas can be controlled in a number of different ways . What is the term for that part of a venting system that conducts the flue gases from the flue collar of an appliance to a chimney or vent, and may include a draft control device: A. double wall vent B. double acting vent C. vent connector D. draft connector . What is the term for a regulating device that is adjusted to deliver gas at atmospheric pressure within its flow rating: A. zero governor B. pressure regulating controller C. atmospheric pressure regulator D. pressure / flow valve

A. B. C. D.

. An appliance shall be installed with a minimum service clearance of: inches ( . m) inches (0. m) inches ( m) inches ( . m)

. An under-fired storage water heater shall always: A. be vented in a chimney B. be direct vented C. have a temperature and pressure relief device D. have a clearance of inches ( mm) from combustible material . The air supply for central heating furnaces, boilers and water heaters that have an input of less than ( kW) shall be provided in accordance with: A. clauses . & . of the B . gas code B. clause . of the B . gas code C. clause . of the B . gas code D. Annex F of the B . gas code

,

Btu/h

. Vent sizing for central heating furnaces, boilers and water heaters that have an input of less than ( kW) may be provided in accordance with: A. clauses . . of the B . code B. clause . of the B . code C. clause . of the B . code D. clause . of the B . code

,

Btu/h

. When is a certificate required in order to install or service a propane appliance? A. always B. when servicing a portable appliance for one s own use C. when installing an appliance in one s own single-family detached dwelling D. when installing or servicing an appliance in other than one's own residence . Where an appliance cannot be installed in accordance with the regulations, what is required to be done? A. prior to the installation, a deviation from the regulations must be applied for and accepted by the Technical Standards and Safety Authority B. the appliance may be installed and the installer must certify that the installation is safe C. the appliance may be installed if authorized by the gas distributor D. a deviation from the regulations must be applied for prior to completion of the installation, and the start up of the appliance . Is the holder of a valid G. certificate certified to work on the carburation system of a propane powered highway vehicle: A. yes B. no C. yes, but only up to the fuel lock-off D. no, unless under the direct supervision of a Class A mechanic . The holder of a G. certificate may install and service gas-fired equipment with inputs up to: A. , Btuh ( kW) B: 00,000 Btuh ( 0 kW) C. , , Btuh ( kW) D. , Btuh ( kW) . To determine the specific purpose an appliance is to be used for, the __________________ should be consulted. A. appliance name plate or rating plate B. installation instruction manual C. contract between the user and the installer D. appliance owner . When referring to appliance manufacturer s instructions, the natural gas and propane installation code: A. recommends that they be left with the owner B. requires that they be kept by the installer for future reference C. recommends that they be kept by the installer for future references D. requires that they be left with the end user

. When the installation of an appliance constitutes a conversion from another form of energy to gas, the installer must: A. advise the user in writing of the procedures to followed in discontinuing the supply of the former form of energy B. remove all aspects of the previous installation C. remove the electrical supply wiring from the panel D. advise the previous energy supplier of the change . By covering a piece of wood with / ( mm) of insulating millboard and gauge ( . mm) sheet metal, a person may reduce the side clearance of an appliance that requires inches ( mm) clearance from combustible material: A. by inches ( 00 mm) B. to inches ( mm) C. by inches ( mm) D. to inches ( mm) . Where the heat exchanger of an appliance installed in a dwelling unit is found to be defective: A. the appliance must be replaced B. the heat exchanger must be repaired C. the manufacturer must be notified D. the heat exchanger must be replaced . Which of the following observations is true: A. appliances must be installed with a minimum inches ( 00 mm) clearance on the side(s) where service is required B. appliances must be installed with a minimum inches ( mm) clearance on every side C. appliances installed outdoors must have a minimum inches ( mm) service clearance to the burner access panel only D. appliances must be installed with a minimum inches ( m) clearance on the side(s) where service is required . When an appliance is installed on a roof, the minimum clearance between the appliance and the edge of the roof shall be: A. feet ( . m) B. feet ( .0 m) C. feet ( . m) D. feet ( . m) . Instructing the user in the safe and correct operation of newly installed appliances or equipment is the responsibility of the: A. installation inspector B. appliance manufacturer C. installing contractor D. appliance installer . Where premises are connected to a supply of gas for the first time, no person shall initially activate an appliance until: A. the fuel distributor has been notified B. the fuel distributor has examined and accepted the installation C. the owner has examined and accepted the installation D. the Technical Standards and Safety Authority has examined and accepted the installation

. Which of the following establishes minimum standards for the repair and servicing of gas appliances: A. Natural Gas and Propane Installation Code B. Underwriters Laboratories of Canada C. National Building Code D. Canadian Standards Association . In a situation that constitutes an immediate hazard, a gas technician shall: A. shut off the gas supply and inform the gas distributor of the situation immediately B. shut off the gas supply and inform the Technical Standards and Safety Authority of the situation immediately C. shut off the gas supply and inform the Ontario Fire Marshal s Office of the situation immediately D. shut off the gas supply and inform the Department of Labour of the situation immediately . A person who has to work on a boiler where asbestos has to be handled must refer to the: A. National Building Code B. Occupational Health and Safety Act and Regulations C. Technical Standards and Safety Act D. Dangerous Goods Transportation Act and Regulations . Welded gas piping must comply with the: A. National Building Code B. Occupational Health and Safety Act and Regulations C. Technical Standards and Safety Act D. Dangerous Goods Transportation Act and Regulations . When manufacturer s instructions do not state the required clearances between combustible materials and the base of a factory built chimney, the installer may refer to the: A. Ontario Building Code B. Occupational Health and Safety Act and Regulations C. Technical Standards and Safety Act D. Dangerous Goods Transportation Act and Regulations . A G. Technician: A. may replace a defective residential automatic gas-fired water heater B. must advise the user of the appliance that a plumber is required to replace the defective automatic water heater C. may recharge an add-on central air conditioner with refrigerant D. may design and install the duct work required for a new installation . When a new appliance is to be installed where the municipality requires work permits and inspections for every installation: A. the installer may proceed with the installation and apply for the installation permit and the inspection once the work has started B. it is the responsibility of the home owner to secure the necessary permits and the inspections C. it Is the responsibility of the installer to secure the necessary permits and the inspections D. it is the responsibility of the municipality to inform the installer that an installation permit and an inspection are required

. The installation of gas-burning appliances in mobile homes shall be in accordance with: A. CSA Standard Z 0. . B. CSA Standard Z . . C. CSA Standard B D. CGA Standard B . . The installation of gas burning appliances in recreational vehicles shall be in accordance with: A. CSA Standard Z . . B. CSA Standard Z 0. . C. CSA Code B D. CSA Code B . . What is the largest size of propane cylinder manufactured: A. lbs. WC ( kg) B. lbs. WC ( kg) C. lbs. WC ( kg) D. ,000 lbs. WC ( kg) . When cylinders are being transported, they shall be secured: A. vertically with chains and straps and a relief valve, in a well ventilated space B. in an upright position with chains and straps and a relief valve, in a well-ventilated space C. in an upright position, in a well-ventilated location with the relief valve communicating with the vapour space only D. in an upright position, in a well-ventilated location with the relief valve communicating with the liquid space only . Where in the B . code book will a person find the table required to size a propane tubing system that is to be operated at a pressure of w.c. ( . kPa), based on a pressure drop of w.c. ( Pa): A. Annex A, Table A. B. Annex A, Table A. C. Annex B, Table B. D. Annex B, Table B. . What code or regulation applies to a propane supplied mobile home that has been converted to a permanent home: A. CAN/CSA-Z . . B. B . C. B . D. National Building Coe A. B. C. D.

. On a roof with a feet feet feet feet

/

pitch and no obstructions, the minimum vent height is:

. On a roof with a wall feet high and feet away from the vent opening, what is the minimum vent height? A. feet B. feet C. feet

D.

feet

. The Ontario Natural Gas Utilization Code is used to determine: A. the best method to clean gas appliances. B. the input of gas appliances. C. regulations for installing gas appliances. D. the gas pressure for gas entering a house. . All furnace appliance manufacturers literature gives the name of the manufacturer, the: A. physical dimensions, fan motor electrical resistance data, and the Btuh input. B. Btuh input, fan size, CFM, voltage, fuse size, and the physical dimensions. C. fuse size, Btuh output, amount of heat required to heat the building, and the size of wire. D. size of chimney or vent riser, Btuh output, fuse size, and the physical dimensions. . Gas piping regulations are in section ___________ of the B

. propane code.

A. B. C. D. . Individual equipment installation regulations are in section_____________ of the Ontario Natural Gas Utilization Code(B . ). A. B. C. D. . Equipment service bulletins are normally issued by the: A. local utility or fuel supplier. B. manufacturer. C. Canadian Gas Association. D. Canadian Standards Association. . Safety directives and bulletins are published by: A. the local utility or fuel supplier. B. the manufacturer. C. TSSA D. the Underwriters Laboratories of Canada . Which information is in both the Natural Gas and Propane code books? A. responsibility of the installer, individual installation data for each type of appliance, clearances from combustibles, piping practices, pipe sizing charts, venting tables B. individual appliance installation instructions, clearances form other equipment, fan size, venting tables, piping types, responsibility of fuel supplier C. what an installer can do, who can weld inch pipe, who can install underground piping, who can install more than one appliance, clearances from combustibles D. pipe sizing, regulator sizing, vent sizing, water pipe sizing, responsibility of the installer, piping practices, clearances form combustibles.

.The word symptom is used manufacturers literature to describe: A. how a piece of equipment functions. B. problems arising because of equipment venting. C. problems arising because of equipment wiring. D. abnormal operation of the equipment. .To correct a symptom such as a fluctuating flame: A. notify the local utility or fuel supplier. B. contact the equipment supplier. C. consult the manufacturer's check list. D. exchange the appliance and contact the manufacturer. . The manufacturer s installation instructions and equipment packing list normally advise an installer to have which of the following items to complete an installation? A. hand tools, gas pressure test gauge, leak detector, stop watch, pipe threader, electrical wire, thermostat wire, torch, solder, grease for joining pipe threads, heavy gauge venting material, and sheet metal screws B. gas pressure test gauge, leak detector, sheet metal screws, gas pipe, wiring, stop watch, manometer, voltmeter, appropriate gauge vent material, CSA approved pipe joining compound, hand tools, and pop rivets C. hand tools, extension cord, drill, pipe wrenches, pipe threader, approved pipe joining compound, sheet metal screws, a list of required pipe and fittings, a list of required wiring materials, a list of required venting materials D. hand tools, drill, pipe wrenches, wiring materials, duct tape for venting joints, approved pipe joining compound, voltmeter, extension cord, manometer, stop watch, multimeter, gas pressure gauge . A broken or dotted line on a manufacturer s wiring diagram normally indicates: A. factory installed wiring. B. a white conductor only. C. an optional accessories. D. field installed wiring. . Equipment specifications indicate mainly: A. dimensions required to install the appliance, weight of the equipment, electrical characteristics, size and location of the vent outlet, piping inlet size, model number B. size of building required to accommodate the equipment, parts list, weight of equipment, installation clearances, piping outlet size, serial number C. address of installation, required appliance output, electrical characteristics, weight of equipment, branch piping size, model number D. physical dimensions required to install the appliance, weight of the equipment, amount of fuel consumed, CO content of the fuel consumed, electrical characteristics, size and location of the vent outlet . Drawings that show multiple views of an object for clarification are called: A. pictorial drawings. B. orthographic drawings. C. schematic drawings. D. rotational drawings. . The heat content of cubic foot of propane is approximately: A. , Btu B. , 00 Btu

C. D.

, ,

Btu Btu

. Propane and natural gas are composed mainly of which of the following elements? A. carbon and nitrogen B. carbon and hydrogen C. carbon and oxygen D. carbon and sulphur

A. B. C. D.

. The flame temperature of propane is approximately: F( C) C( F) 0 °F ( 0 0°C) C( F)

A. B. C. D.

. The ignition temperature of propane is: 0 °F- 0 0 °F ( F°C) CC. ( FF) FF.( CC) CC. ( F– F)

. The relative density Propane is: A. equal to the relative density of air. B. times the relative density of air. C. / times the relative density of air. D. the relative density of air. . The boiling point of propane at atmospheric pressure is: A. - °F (- . °C) B. F (- . C) C. F F (- . C) D. F ( C) A. B. C. D.

. When propane changes from a liquid to a vapour, it expands and its volume increases by: times. times. times. 0 times.

A. B. C. D.

. One imperial gallon of propane weighs: . pounds. . pounds. . pounds. . pounds.

. When one pound of propane burns, it releases approximately: A. , Btu.

B. C. D.

, Btu. , 00 Btu. , Btu.

. The products of propane combustion are primarily. A. H and H and heat. B. H and CO and heat. C. H 0, CO and heat. D. H and C and heat. . As the temperature of liquid propane in a tank increases, the vapour pressure of the propane: A. increases. B. decreases. C. remains the same. D. fluctuates.

A. B. C. D.

. The amount of C . cu. ft. .0 cu. ft. . cu. ft. . cu. ft.

produced per cubic foot of propane burned is:

A. B. C. D.

. The amount of air required to BURN cubic foot ( . . cu. ft. ( . cu. m.) . cu. ft. ( . cu. m.) . cu. ft. ( . cu. m.) .0 cu. ft. (0. cu. m.)

cu. m.) of propane is approximately:

. The air found in the products of combustion after the complete combustion of natural gas or propane is called: A. primary air B. secondary air C. excess air D. dilution air . Which of the following is toxic? A. natural gas B. propane gas C. carbon monoxide D. carbon dioxide . Air that is mixed with fuel prior to ignition is called: A. primary air. B. secondary air. C. excess air. D. theoretical air. . Air that is mixed with fuel at the point of combustion and around the flame is : A. primary air. B. secondary air.

C. excess air. D. theoretical air. . Carbon monoxide is a product of the incomplete combustion of: A. nitrogen. B. oxygen. C. a hydrocarbon. D. an inorganic compound. A. B. C. D.

. Air is about: nitrogen and nitrogen and nitrogen and 0 nitrogen and 0

oxygen oxygen oxygen oxygen

. A luminous flame is caused by: A. premixing air and fuel prior to combustion. B. not premixing air and fuel prior to combustion. C. a low ignition temperature. D. the presence of carbon monoxide. . A Bunsen flame is caused by: A. premixing air and fuel prior to combustion. B. not premixing air and fuel prior to combustion. C. a low ignition temperature. D. the presence of carbon monoxide. . The specific gravity of natural gas is: A. greater than that of air. B. less than that of air. C. the same as that of propane. D. greater than that of propane. . Natural gas and propane are composed mainly of: A.carbon and nitrogen. B. carbon and hydrogen. C. carbon monoxide and nitrogen. D. carbon dioxide and hydrogen.

A. B. C. D.

. The flame temperature of natural gas is approximately: F( C) C( F) 00 °F ( °C) C( F)

. The theoretical boiling point of natural gas at atmospheric pressure i: A. °F (°C) B. - F(- C) C. F (- C) D. F ( C)

. The products of complete combustion of natural gas and propane are primarily: A. hydrogen, water (vapour), and heat. B. carbon, carbon monoxide, and heat. C. water (vapour), carbon dioxide, and heat. D. hydrogen, carbon, and heat.

A. B. C. D.

. The amount of air required to burn cubic foot of natural gas is approximately: . cu. ft. ( . cu. m.) 0.0 cu. ft. (0. cu. m.) . cu. ft. ( . cu. m.) . cu. ft. ( . cu. m.)

. The odorant added to natural gas for detection purposes is: A. oil B. mustard. C. carbon dioxide. D. mercaptan. . What is the approximate ignition temperature of natural gas? A. F ( C) B. , 00°F ( 0 °C) C. , F( , C) D. , F( , C) . The specific gravity of natural gas is: A. 0. 0 B. . C. . D. . . The major constituents of flue gases after the proper combustion of natural gas in air are: A. CO, H , N , excess air, and heat. B. H , N , primary air, and heat. C. C0 , H 0, N , 0 , and heat. D. , CO, N , H , and heat. . The two main hydrocarbons which form natural gas are: A. methane and ethane. B. butane and propane. C. ethane and butane. D. methane and propane. . What theoretical gas to air ratio is necessary to achieve perfect combustion with an atmospheric natural gas burner? A. part of natural gas to 0 parts of air B. parts of natural gas to parts of air

C. parts of natural gas to parts of air D. parts of natural gas to part of air

A. B. C. D.

. Carbon monoxide is produced through: perfect combustion. complete combustion with excess air present. incomplete combustion. incomplete mixing of theoretical air and primary air.

. The products of complete combustion of natural gas in air are: A. carbon monoxide, water vapour, and heat B. carbon dioxide, water vapour, and heat C. aldehydes, water vapour, and heat D. nitrous oxide, water vapour, and heat

. If a natural gas flame is adjusted to produce more than A. carbon monoxide may be produced. B. combustion efficiency will decrease. C. the flame will be very noisy and will lift off of the burner. D. there will be little overall effect.

carbon dioxide:

. What could result if a flame is adjusted with too much primary air? A. flame quenching B. a luminous flame C. flame lift D. flame dilution . Carbon Dioxide and Nitrogen are: A. explosive gases. B. inert gases. C. neutralizers. D. toxins. . Natural gas is A. ethane. B. pentane. C. methane. D. butane.

A. B. C. D.

to

:

. How much air is required to bum , cu.ft. ( . cu. m.) , cu.ft. ( . cu. m.) 0,000 cu.ft. ( . cu. m.) , cu.ft. ( . cu. m.)

cubic feet of natural gas per hour?

A. B. C. D.

. One boiler horsepower is approximately: , Btuh ( . kW). , Btuh ( . kW). ,000 Btuh ( 0 kW). , Btuh ( kW).

. Two undesirable products of incomplete combustion are: A. CO and aldehydes. B. CO and N . C. C and aldehydes. D. CO and heat.

. Which substance is inert and passes through the combustion zone absorbing heat during the combustion process? A. carbon dioxide B. ethyl mercaptan C. oxygen D. nitrogen . The relative density of liquid propane is approximately: A. 0. B. . C. . D. . . Propane is a: A. manufactured gas. B. hydrocarbon. C. distillate fuel. D. naphthalene fuel. . At A. . B. . C. . 0 D. .

F(

. C) a pound of propane produces how many cubic feet of gas?

. Propane shall have a distinctive odour content to ensure it is readily detectable in the atmosphere down to concentrations of: A. of the lower explosive limit. B. 0 of the lower explosive limit. C. of the upper explosive limit. D. of the upper explosive limit.

A. B C. D.

.In a natural gas and air mixture, what are the approximate lower and upper limits of flammability? to to to to

. Carbon monoxide is: A. an inert gas which is heavier than air. B. an inert gas which is lighter than air. C. a toxic gas which is combustible. D. a toxic gas which is non-combustible.

A. B. C. D.

. The heat content of cubic foot of natural gas is approximately: ,000 Btu , Btu , Btu , Btu

A. B. C. D.

. A reading of . w.c. equals: / psig. ( . kPa) / psig. ( . kPa) / psig. ( . kPa) psig. ( . kPa)

A. B. C. D.

. The boiling point of water is: F (- C) F ( C) F( C) °F ( 00°C)

. By definition, the specific gravity of a gas (vapour) is: A. the weight of the gas as compared to the weight of air. B. the weight of the gas as compared to the weight of an equal volume of air. C. the volume of the gas compared to the equal weight of an equal volume of air. D. the volume of the gas as compared to the weight of air. . The specific gravity of propane vapour is: A. greater than that of air. B. less than that of air. C. the same as that of natural gas. D. less than that of natural gas.

A. B. C. D.

. The specific gravity of propane is: . w.c. w.c. . " w.c. . w.c.

. The lower and upper flammable limits of propane are: A. . - . B. . - .

C. . D. .

-

. .

. On a roof with a feet feet feet feet

/

pitch and no obstructions, the minimum vent height is:

. On a roof with a vent height? A. feet B. feet C. feet D. feet

/

pitch, and a wall feet high and feet away from the vent opening, what is the minimum

A. B. C. D.

. The Ontario Natural Gas Utilization Code is used to determine: A. the best method to clean gas appliances. B. the input of gas appliances. C. regulations for installing gas appliances. D. the gas pressure for gas entering a house. . All furnace appliance manufacturers literature gives the name of the manufacturer, the: A. physical dimensions, fan motor electrical resistance data, and the Btuh input. B. Btuh input, fan size, CFM, voltage, fuse size, and the physical dimensions. C. fuse size, Btuh output, amount of heat required to heat the building, and the size of wire. D. size of chimney or vent riser, Btuh output, fuse size, and the physical dimensions. . Gas piping regulations are in section ___________ of the B

. propane code.

A. B. C. D. . Individual equipment installation regulations are in section_____________ of the Ontario Natural Gas Utilization Code(B . ). A. B. C. D. . Equipment service bulletins are normally issued by the: A. local utility or fuel supplier. B. manufacturer. C. Canadian Gas Association. D. Canadian Standards Association. . Safety directives and bulletins are published by: A. the local utility or fuel supplier.

B. the manufacturer. C. TSSA D. the Underwriters Laboratories of Canada

. Which information is in both the Natural Gas and Propane code books? A. responsibility of the installer, individual installation data for each type of appliance, clearances from combustibles, piping practices, pipe sizing charts, venting tables. B. individual appliance installation instructions, clearances form other equipment, fan size, venting tables, piping types, responsibility of fuel supplier. C. what an installer can do, who can weld inch pipe, who can install underground piping, who can install more than one appliance, clearances from combustibles. D. pipe sizing, regulator sizing, vent sizing, water pipe sizing, responsibility of the installer, piping practices, clearances form combustibles.

A. B. C. D.

. The word symptom is used manufacturers literature to describe: how a piece of equipment functions. problems arising because of equipment venting. problems arising because of equipment wiring. abnormal operation of the equipment.

. To correct a symptom such as a fluctuating flame: A. notify the local utility or fuel supplier. B. contact the equipment supplier. C. consult the manufacturer's check list. D. exchange the appliance and contact the manufacturer. . The manufacturer s installation instructions and equipment packing list normally advise an installer to have which of the following items to complete an installation? A. hand tools, gas pressure test gauge, leak detector, stop watch, pipe threader, electrical wire, thermostat wire, torch, solder, grease for joining pipe threads, heavy gauge venting material, and sheet metal screws. B. gas pressure test gauge, leak detector, sheet metal screws, gas pipe, wiring, stop watch, manometer, voltmeter, appropriate gauge vent material, CSA approved pipe joining compound, hand tools, and pop rivets. C. hand tools, extension cord, drill, pipe wrenches, pipe threader, approved pipe joining compound, sheet metal screws, a list of required pipe and fittings, a list of required wiring materials, a list of required venting materials. D. hand tools, drill, pipe wrenches, wiring materials, duct tape for venting joints, approved pipe joining compound, voltmeter, extension cord, manometer, stop watch, multimeter, gas pressure gauge. . A broken or dotted line on a manufacturer s wiring diagram normally indicates: A. factory installed wiring. B. a white conductor only. C. an optional accessories. D. field installed wiring. . Equipment specifications indicate mainly: A. dimensions required to install the appliance, weight of the equipment, electrical characteristics, size and location of the vent outlet, piping inlet size, model number. B. size of building required to accommodate the equipment, parts list, weight of equipment, installation clearances, piping outlet size, serial number.

C. address of installation, required appliance output, electrical characteristics, weight of equipment, branch piping size, model number. D. physical dimensions required to install the appliance, weight of the equipment, amount of fuel consumed, CO content of the fuel consumed, electrical characteristics, size and location of the vent outlet. . Drawings that show multiple views of an object for clarification are called: A. pictorial drawings. B. orthographic drawings. C. schematic drawings. D. rotational drawings. . Wiring diagrams indicate which of the following? A. supply voltage, wire size from panel, fuse size, internal wiring. B. furnace model and serial number. C. btu input. D. parts breakdown. . A bill of materials is a: A. list sent by the manufacturer as a check list of the materials delivered to the site. B. purchase order copy indicating the materials which were ordered. C. list indicating the materials required to complete an installation. D. list of all the materials used manufacturing the equipment. . Mechanical drawings are used to: A. give the building address, show the equipment location, piping layout, panel locations, duct sizing and duct layout. structures, piping layout, and show equipment location. C. give the building address, indicate the building size, show its elevations, list the mechanical equipment, and show its location, show all permits. D. give the building address, show the owner s name, installer s name, permit numbers, the equipment list and the warranty. . A residential central forced air gas furnace heating system works on the principle of drawing: A. cold air from the return and superheating the air. B. cold air from central areas of the house, then forcing this air across a heat exchanger and back into the house. C. cold supply air from central areas of the house then forcing it across a heat exchanger and back into the house through the return air ducts. D. conditioned air from a central area of the house then forcing it across a heat exchanger and returning it back into the house through the supply air ducts. . What process takes place at the heat exchanger? A. The burners ignite. B. Return air is heated. C. The combustion process takes place. D. The flue gases are stored. . The purpose of a burner in a forced air gas furnace is to: A. ignite the gas. B. mix the air and gas. C. heat the combustion air so that it is lighter to allow it to flow out the exhaust D. to direct the gas into the heat exchanger so that it can be mixed with air and ignited

. The configuration of a Hi Boy forced air gas furnace has: A. supply air exiting at the top and return air entering at the top. B. return air entering at the top and supply air exiting at the bottom. C. supply air entering at the bottom and return air exiting at the top. D. supply air exiting at the top and return air entering at the bottom. . If the return and supply air plenum are both located on the top of the furnace, the furnace is a: A. high boy. B. low boy. C. counter flow, or down flow. D. horizontal. . Decorative appliances to be installed in vented fireplaces mounted on a grating system are usually referred to as: A. directed vented wall furnaces . B. vented room heaters. C. fireplace. D. gas logs. . Infrared heaters may not be used in: A. warehouses. B. loading docks. C. occupied residences. D. factories. . If the gas / air velocity is too great at the port of an atmospheric burner, the flame will have a tendency to: A. flash-back. B. lift off the port. C. be too large. D. be too small. A. B. C. D.

. Atmospheric burners are designed to operate under: normal atmospheric pressure with low gas pressure. high air pressure with low gas pressure. atmospheric pressure with high gas pressure. compressed air pressure with high gas pressure.

. The purpose of the high limit switch found on many gas-fired appliances is to: A. establish safe operating temperatures on start up. B. regulate the plenum temperature above a preset minimum. C. shut off the main gas valve should overheating occur. D. turn on the fan motor to cool down the heat exchanger. . A bunsen-type flame is identified by its appearance as being: A. a blue flame. B. a yellow flame. C. a green / orange flame. D. an orange flame.

. What would the likely cause be if orange flashes were evident in a natural gas flame? A. dust burning in the flame. B. carbon dioxide burning in the flame. C. hydrogen burning in the flame. D. nitrogen burning in the flame. . A noisy, lifting, blowing pilot flame is usually the result of: A. the recirculation of combustion products. B. excessive gas to the main burner. C. a high percentage of H in the flue gases. D. excessively high pilot gas pressure. . A G. technician is allowed to: A. activate all new appliances. B. initially activate appliances up to , Btuh input. C. reactivate existing installations of appliances up to 00,000 Btuh input. D. activate residential appliances only. . If an appliance is spilling at the draft hood, an unsupervised G. is permitted to: A. leave the appliance as it is. B. turn off the appliance and notify a superior. C. repair the problem with the vent. D. adjust the manifold pressure to reduce the overfiring. . Which method of heat transfer is used in an open barbeque? A. conduction B. radiation C. convection D. thermal . Which method of heat transfer is used in a standard gas-fired oven? A. conduction B. radiation C. convection D. thermal . Which method of heat transfer is used in a clothes dryer? A. conduction B. radiation C. convection D. thermal . Air passing over a heat exchanger is heated by: A. conduction B. radiation C. convection D. thermal

A. B. C. D.

. Infrared and tube heaters transfer heat by: conduction. radiation. convection. a latent process.

. Boilers transfer heat to water through: A. conduction. B. radiation. C. convection. D. a latent process. . Air which is mixed with fuel in a burner prior to combustion is: A. primary air. B. secondary air. C. excess air. D. theoretical air. . Which type of pilot burns at low turndown throughout the entire time the burner is in service, whether or not the main burner is firing, except that upon a call for heat, the fuel flow to the pilot is automatically increased to produce a flame which will reliably ignite the main burner fuel? A. turndown pilot B. throttling pilot C. expanding pilot D. cycling pilot . Which type of pilot is automatically lighted each time there is a call for heat and burns during the entire period that the main burners firing? A. continuous pilot B. interrupted pilot C. intermittent pilot D. non-cycling pilot . An orifice for a propane appliance with the same input as a natural gas appliance is: A. the same size as the natural gas orifice. B. smaller than the natural gas orifice. C. larger than the natural gas orifice. D. interchangeable with the natural gas orifice. . Spillage of flue gases at the appliance draft diverter is an indication of: A. an updraft condition in the appliance venting system. B. under firing. C. normal operation. D. a restriction in the venting system. . A yellow flame at an atmospheric burner could be the result of: A. low gas pressure. B. insufficient primary air. C. pilot outage. D. excessive primary air.

. No one may initially activate a , Btuh input appliance connected to a piping system: A. unless the installation is inspected by a G. technician or higher. B. unless the installation is inspected by a G. technician or higher. C. unless the installation is inspected by a G. technician or higher. D. unless the installation is inspected by a GP technician or higher. . An indication of excessive primary air is a: A. quenched flame. B. lifting flame. C. luminous flame. D. yellow flame.

A. B. C. D.

. A draft hood will: eliminate back drafts coming down a chimney. eliminate negative pressure in a building. prevent positive pressure in a building. prevent down a draft from entering the appliance.

A. B. C. D.

. If upon reactivation of an appliance a G. technician notices flame roll out, the technician should: remove and clean the burners. turn off the gas supply and call a qualified technician to repair the problem. remove and clean the vent system. turn off the gas supply and lower the gas pressure before proceeding.

. An appliance which incorporates a glow bar has a ______________ ignition system. A. standing B. spark C. manual D. hot surface . A Bunsen flame is characterized by its: A. purple appearance B. blue appearance. C. orange appearance. D. green/orange appearance. a) b) c) d)

. What is the maximum space allowed between pipe supports for horizontally installed ’ ’ ’ ’

. Can underground gas piping or tubing pass below a foundation wall or under a building? a) yes b) no

NPS pipe?

. Can a quick disconnect device be substituted for manual shut off valve? a) yes b) no . The depth of dirt pocket shall be either which of the following lengths or shall be equal to the internal diameter for the piping it serves, whichever is the greatest? a) ” b) ” c) ” d) ” . Are bushing allowed to be nested together? a) yes b) no . Can you conceal a union or a combination of fittings designed and intended to act as a swing joint? a) yes b) no . Underground tubing systems shall be joined or connected by which of the following methods? a) any of the below b) approved mechanical compression c) press-connecter fittings d) brazing . How should piping or tubing’s be identified in ever care or detention occupancy, commercial, industrial and assembly building? a) the entire piping system shall be painted yellow b) the piping system shall be marked with yellow bands c) the piping system shall be marked “propane” or “gas” d) any of the above

a) b) c) d)

. what diameters gas piping and above require welded joints? - / ” ” ” - / ”

. may a copper joint be made with brazing material that has a melting temperature exceeding a) yes b) no

a) b) c) d)

. what is minimum diameter of piping that can be installed underground? ” ” / ” / ”

F?

. may a vented appliance be connected with a hose? a) yes b) no Clause . 0. - Except as permitted in Clause .

. , a gas hose connection to a vented appliance shall be prohibited.

Clause . . - An infrared heater of the vented type shall be installed in accordance with the certified markings and the manufacturer’s certified installation instructions. It shall be protected against physical damage. A tube-type infrared heater shall only be connected with a Type I gas hose that is (a) certified as being in compliance with CSA CAN/CGA- . ; and (b) of a length of in ( 0 cm). . in our trade, the following identifies copper tubing size? a) the tubing inside diameter b) the tubing outside diameter c) none of the above d) all of the above . Capacity tables in the B . natural gas and propane installing code indicate capacity in BTU/h for which of the following? a) inside diameter of schedule 0 steel pipe and outside diameter of tubing b) outside diameter of schedule steel pipe and outside diameter of tubing c) none of the above d) all of the above . before pressure testing piping or tubing, what must be done with all components that have a pressure rating below the test pressure? a) they must have approved sealant applied b) they must be gas tight c) they must be isolated from the gas line d) none of the above . what type of copper tubing that can be installed underground does require any external protection? a) type K b) type L c) type G d) all of the above . black malleable iron piping shall comply with which standard? a) ASTM A b) CSA B . . c) CSA B . d) ASTM A /A OR ASTMA 0 . corrugated stainless steel tubing (CSST) shall comply with which standard a) ASTM A b) CSA B . . c) CSA B . d) none of the above

Clause . . 0 - Corrugated stainless steel tubing (CSST) and associated fittings shall comply with ANSI/LC /CSA . or CSA publication CGA Certification Laboratory Requirement LAB-00 . . all steel pipe threads must be ? a) parallel b) tapered c) straight d) none of the above . type “K” copper must conform to what standard? a) ASTM B b) ASTM A c) ASTM B d) none of the above . type “G” copper must conform to what standard? a) ASTM B b) ASTM A c) ASTM B d) none of the above

a) b) c) d)

. what are the minimum test requirements for all wrapped or factory-coated piping? p.s.i.g. p.s.i.g. p.s.i.g 00 p.s.i.g

a) b) c) d)

. what is the required test pressure of a propane piping system 0 p.s.i.g. – 0 minutes p.s.i.g. – minutes p.s.i.g. – minutes p.s.i.g. – minutes

ft long and working pressure of

. is an individual shut off valve required for all propane appliances on a recreational vehicle? a) yes b) no . must a pressure tag be attached to a newly installed gas appliance? a) yes b) no . what characteristics of propane differentiate propane purging from natural purging? a) upper and lower explosive limits b) specific gravity c) all of the above d) none of the above

p.s.i.g.?

. which of the following cannot be used in a piping system? a) close nipple b) street elbow c) street tee d) all of the above . ever hose and hose fitting shall have a minimum working pressure of what? a) psig b) 0 psig c) psig d) none of the above

a) b) c) d)

. what is the minimum working pressure of all hose and fittings? psig 0 psig psig psig