TSSA G2 EXAM GASTECHNICIAN NEWEST

TSSA G2 EXAM GASTECHNICIAN NEWEST

COMPLETE 300 QUESTIONS AND CORRECT

ANSWERS (VERIFIED ANSWERS)

• When the required minimum clearance for a vent connector is 9" (228 mm)

to combustible material with no protection, what is the acceptable method to reduce the clearance by 3" (76 mm)?

• Use 0.05" (12 mm) insulating millboard spaced out 0.05" (12 mm) with

noncombustible spacers

• Use 0.25" (6 mm) insulating millboard spaced out 1" (25 mm)
• Use 22 gauge sheet metal attached to the hot side of the combustible material
• Use 28 gauge sheet metal spaced out 1" (25 mm) from the combustible

material

Correct Answer: B

• When using a gas detector such as a Drager or Gas Tec type, the most

important aspect regarding the sample tube is that the:

• Detector is within the manufacturer's date code
• Sample tube is within the manufacturer's date code
• Detector has been inspected and verified
• Sample tube is CGA approved

Correct Answer: B

• How far above the burner port does the centre line of the flue outlet have to

be to convert a revertible flue furnace with a natural draft burner?

• At least 6" (150 mm)
• Less than 12" (300 mm)

• At least 12" (300 mm)
• At least 24" (600 mm)

Correct Answer: C

4. The vent of a direct vent propane appliance shall not terminate:

• Within 2 ft. of a property line
• Less than 3 ft. from a gas service regulator
• Within 3 ft. of a mechanical air supply inlet to a building
• Within 10 ft. of a mechanical air supply inlet to a building

Correct Answer: C

• Which of the following is the best way to increase the furnace blower speed?
• Open up the motor pulley
• Close up the motor pulley
• Install a higher horsepower fan motor
• Increase the size of the return air duct

Correct Answer: B

6. The baffles in a hot water boiler are designed:

• To reduce water flow
• To clean boiler tubes
• To premix air and gas
• To slow hot flue gases flow

Correct Answer: D

7. A condensing furnace has:

• One heat exchanger
• Operates without a heat exchanger
• Two heat exchangers
• Condensate drain and one exchanger

Correct Answer: C

8. Before lighting a burner in a steam boiler, ensure that:

• There is water in the boiler
• The temperature controller is set properly
• The main burner test firing valve is turned on
• The safety valves are open

Correct Answer: A

9. On seasonal start up, a pool heater should run:

• Intermittently
• Continuously for 24 hours
• Continuously until the thermostat is satisfied
• One hour on and one hour off until the thermostat is satisfied

Correct Answer: C

10. Steel boilers are generally classified as:

• Water tube boilers
• Vapour tube boilers
• Square sectional boilers
• Oval sectional boilers

Correct Answer: A

11. Expansion tanks provide a place for:

• Water to cool before returning to the system and pressure to build so the

system will operate properly

• Hot water to expand so it will be forced through the system and for steam to

be trapped

• Water to travel and allow for pressure fluctuations in the system
• Condensate to collect before it returns to the boiler and a place for steam to

expand in the system

Correct Answer: C

12. A room heater installed in either a sleeping area or public area shall be:

• Direct vent only
• Equipped with a regulator
• Equipped with a fan
• Equipped with an on/off switch on the wall

Correct Answer: B

• What type of vent must be used when the vent of a wall furnace will be

concealed in a partition wall?

• B vent
• L vent
• BH vent
• BW vent

Correct Answer: D

14. Single wall vent connectors: