TSSA G2 ACTUAL FINALS ANSWERS AND
QUESTIONS SET A+
✔✔The majority of the heat loss in a house on average is through the?
A. Attic
B. Walls
C. Basement floor
D. Windows - ✔✔B
✔✔Carbon monoxide (CO) is a product of the incomplete combustion of?
A. Oxygen
B. Air
C. Soot
D. Hydrocarbons - ✔✔D
✔✔What is the ultimate CO2 level for propane gas?
A. 9.9%
B. 10.9%
C. 11.9%
D. 13.9% - ✔✔D
✔✔Which heat is removed or added to cause a change in state without change in
temperature?
A. Sensible heat
B. Radiant heat
C. Latent heat
D. Super heat - ✔✔C
✔✔What would be the minimum area needed to service an appliance?
A. 24 in. x 18 in.
B. 24 in. x 24 in.
C. 36 in. x 36 in.
D. 36 in. x 48 in. - ✔✔A
,✔✔All air filtration devices are generally located in the?
A. Fresh air plenum
B. Return air plenum
C. Supply air plenum
D. Exhaust air plenum - ✔✔B
✔✔236. A pressure reading of 14.7 psia is equivalent to?
A. 2.35 in w.c.
B. 14 in w.c.
C. 0 psig (gauge '0' is calibrated to atmosphere)
D. 10 psig - ✔✔C
✔✔BW vent shall be used only with an approved:
A. decorative appliance
B. down flow furnace
C. revertible flue boiler
D. recessed wall furnace - ✔✔D
✔✔235. The Celsius reading equivalent to 70°F is?
A. 25°C
B. 18°C
C. 21°C
D. 28°C - ✔✔C
✔✔234. What would the blower speed be if the motor pulley were twice the diameter of
the blower pulley?
A. Two times the motor speed
B. Equal to the motor speed
C. Half the motor speed
D. Quarter the motor speed - ✔✔A
✔✔Where should the condensate line of a condensing furnace terminate?
A. On the floor near the drain
B. Outside the building
C. Though the concrete floor
D. To an open floor drain - ✔✔D
✔✔Which of the following is used to de-lime a hot water tank?
A. Ammonia solution
B. Bromide acid
C. Muriatic acid
D. Tri-sodium phosphate - ✔✔C
,✔✔The minimum aperture dimension for a fixed louver, grille or screen shall be?
A. 3/8"
B. 1/8"
C. 1/2"
D. 1/4" - ✔✔D
✔✔What is the ultimate CO2 level for natural gas if excess air temperature is below 65
F?
A. 9.9%
B. 12.9%
C. 8.9%
D. 11.9% - ✔✔
✔✔If a Type B vent is unavailable for the required installation it may be replaced by?
A. Type C
B. Type BH
C. Type BW
D. Type L - ✔✔D
✔✔At what temperature do flue gases condensate?
A. 125°F
B. 127°F
C. 129°F
D. 130°F - ✔✔B
✔✔On category IV appliances, can a single wall vent be used to vent flue gases?
A. Yes
B. No
C. Manufacturer approved only
D. Only if vents are silicone together - ✔✔B
✔✔227. For a 20 horsepower steam boiler, what would be its maximum input in Btu?
A. 200 Mbtu
B. 530 Mbtu
C. 680 Mbtu
D. 700 Mbtu - ✔✔C
✔✔226. On a 14 /12 pitch roof, what would be the termination of a 5-inch B-Vent?
A. 4 ft.
B. 5 ft.
C. 6 ft.
D. 10 ft. - ✔✔B
✔✔Who regulates the testing of venting material?
, A. C.S.A.
B. U.L.V
C. C.G.A.
D. U.L.C - ✔✔D
✔✔Natural gas is mostly made up of?
A. Methane and Butane
B. Methane and Ethane
C. Ethane and Butane
D. Butane and Propane - ✔✔B
✔✔223. What would be the approximate time for purging a 1-inch NPS pipe at 100-
feet?
A. 50 seconds
B. 1 minute
C. 1 minute, 24 seconds
D. 1 minute, 10 seconds - ✔✔C
✔✔222. When converting a furnace, how far above the burner must the flue collar be?
A. 6 in.
B. 8 in.
C. 10 in.
D. 12 in. - ✔✔D
✔✔What does a spiral baffle do?
A. Remove flue gas
B. Speed up combustion
C. Slow flue gas
D. Raises flue temperature - ✔✔C
✔✔How many cubic feet of vapor will one pound of liquid propane (C3H8) expand to?
A. 5.13
B. 8.03
C. 7.53
D. 8.5 - ✔✔D
✔✔Can NMD wire be installed to an outside gas lamp?
A. Yes
B. No
C. Only if the lamp is direct spark
D. Yes if it is 14 AWG wire - ✔✔B
✔✔What does a heat anticipator do?
A. Shuts the burner down if loss of gas supply
QUESTIONS SET A+
✔✔The majority of the heat loss in a house on average is through the?
A. Attic
B. Walls
C. Basement floor
D. Windows - ✔✔B
✔✔Carbon monoxide (CO) is a product of the incomplete combustion of?
A. Oxygen
B. Air
C. Soot
D. Hydrocarbons - ✔✔D
✔✔What is the ultimate CO2 level for propane gas?
A. 9.9%
B. 10.9%
C. 11.9%
D. 13.9% - ✔✔D
✔✔Which heat is removed or added to cause a change in state without change in
temperature?
A. Sensible heat
B. Radiant heat
C. Latent heat
D. Super heat - ✔✔C
✔✔What would be the minimum area needed to service an appliance?
A. 24 in. x 18 in.
B. 24 in. x 24 in.
C. 36 in. x 36 in.
D. 36 in. x 48 in. - ✔✔A
,✔✔All air filtration devices are generally located in the?
A. Fresh air plenum
B. Return air plenum
C. Supply air plenum
D. Exhaust air plenum - ✔✔B
✔✔236. A pressure reading of 14.7 psia is equivalent to?
A. 2.35 in w.c.
B. 14 in w.c.
C. 0 psig (gauge '0' is calibrated to atmosphere)
D. 10 psig - ✔✔C
✔✔BW vent shall be used only with an approved:
A. decorative appliance
B. down flow furnace
C. revertible flue boiler
D. recessed wall furnace - ✔✔D
✔✔235. The Celsius reading equivalent to 70°F is?
A. 25°C
B. 18°C
C. 21°C
D. 28°C - ✔✔C
✔✔234. What would the blower speed be if the motor pulley were twice the diameter of
the blower pulley?
A. Two times the motor speed
B. Equal to the motor speed
C. Half the motor speed
D. Quarter the motor speed - ✔✔A
✔✔Where should the condensate line of a condensing furnace terminate?
A. On the floor near the drain
B. Outside the building
C. Though the concrete floor
D. To an open floor drain - ✔✔D
✔✔Which of the following is used to de-lime a hot water tank?
A. Ammonia solution
B. Bromide acid
C. Muriatic acid
D. Tri-sodium phosphate - ✔✔C
,✔✔The minimum aperture dimension for a fixed louver, grille or screen shall be?
A. 3/8"
B. 1/8"
C. 1/2"
D. 1/4" - ✔✔D
✔✔What is the ultimate CO2 level for natural gas if excess air temperature is below 65
F?
A. 9.9%
B. 12.9%
C. 8.9%
D. 11.9% - ✔✔
✔✔If a Type B vent is unavailable for the required installation it may be replaced by?
A. Type C
B. Type BH
C. Type BW
D. Type L - ✔✔D
✔✔At what temperature do flue gases condensate?
A. 125°F
B. 127°F
C. 129°F
D. 130°F - ✔✔B
✔✔On category IV appliances, can a single wall vent be used to vent flue gases?
A. Yes
B. No
C. Manufacturer approved only
D. Only if vents are silicone together - ✔✔B
✔✔227. For a 20 horsepower steam boiler, what would be its maximum input in Btu?
A. 200 Mbtu
B. 530 Mbtu
C. 680 Mbtu
D. 700 Mbtu - ✔✔C
✔✔226. On a 14 /12 pitch roof, what would be the termination of a 5-inch B-Vent?
A. 4 ft.
B. 5 ft.
C. 6 ft.
D. 10 ft. - ✔✔B
✔✔Who regulates the testing of venting material?
, A. C.S.A.
B. U.L.V
C. C.G.A.
D. U.L.C - ✔✔D
✔✔Natural gas is mostly made up of?
A. Methane and Butane
B. Methane and Ethane
C. Ethane and Butane
D. Butane and Propane - ✔✔B
✔✔223. What would be the approximate time for purging a 1-inch NPS pipe at 100-
feet?
A. 50 seconds
B. 1 minute
C. 1 minute, 24 seconds
D. 1 minute, 10 seconds - ✔✔C
✔✔222. When converting a furnace, how far above the burner must the flue collar be?
A. 6 in.
B. 8 in.
C. 10 in.
D. 12 in. - ✔✔D
✔✔What does a spiral baffle do?
A. Remove flue gas
B. Speed up combustion
C. Slow flue gas
D. Raises flue temperature - ✔✔C
✔✔How many cubic feet of vapor will one pound of liquid propane (C3H8) expand to?
A. 5.13
B. 8.03
C. 7.53
D. 8.5 - ✔✔D
✔✔Can NMD wire be installed to an outside gas lamp?
A. Yes
B. No
C. Only if the lamp is direct spark
D. Yes if it is 14 AWG wire - ✔✔B
✔✔What does a heat anticipator do?
A. Shuts the burner down if loss of gas supply
