TSSA G2 EXAM GASTECHNICIAN NEWEST

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TSSA G2 EXAM GASTECHNICIAN NEWEST 2025/2026

COMPLETE 300 QUESTIONS AND CORRECT

ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED

A+||BRAND NEW VERSION!!

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 - 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
• the sample tube is CGA approved - ANSWER-B 1 / 4

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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) - ANSWER-C

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 - 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 - ANSWER-B 2 / 4

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The baffles in a hot water boiler

• To reduce water flow
• Clean boiler tubes
• Premix air and gas
• Slow hot flue gases flow - ANSWER-D

A condensing furnace has:

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

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 - ANSWER-A

On seasonal start up, a pool heater should run:

• intermittently 3 / 4

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• continuously for 24 hours
• continuously until the thermostat is satisfied
• one hour on and one hour off until the thermostat is satisfied -

ANSWER-C

Steel boilers are generally classified as:

• Water tube boilers
• Vapour tube boilers
• Square sectional boilers
• Oval Sectional boilers - ANSWER-A

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 - ANSWER-C

The device that the water tank uses to direct the incoming water to the lower part of the tank is called?

• / 4