Page|1
TSSA G2 ACTUAL EXAM Q&A TESTED AND
APPROVED NEWLY MODIFIED EXAM
GRADED A+
Before lighting a burner in a steam boiler, ensure that:
A. there is water in the boiler
B. the temperature controller is set properly
C. the main burner test firing valve is turned on
D. the safety valves are open -- ANSWER--A
The recommended water temperature setting from a mixing valve to the domestic water
system in combination heating systems that employ oil-fired water heaters for heating potable
water and for space heating is:
A. 43°C (110°F)
B. 49°C to 54°C (120°F to 130°F)
C. 60°C to 66°C (140°F to 150°F)
D. 83°C (180°F) -- ANSWER--B
An inverted sensor (measures water level) can be found operating what type of appliance?
A. Hot water boiler
, Page|2
B. Steam water boiler
C. Domestic hot water storage tank
D. Domestic potable hot water tank -- ANSWER--D
A backflow prevent used in a hydronic heating system is used to:
A. Keep hot water from entering the cold water system
B. Hold the pressure on the system during a temporary shutdown to prevent the entry of air
C. Prevent the heating water from circulating the wrong way in the system
D. Keep non-combustible water from entering the drinking water system -- ANSWER--D
A low water cut off device on an automatically fired hot water heating boiler rated at 350,000
Btuh (102 kW) is:
A. Not required if a limit control is installed
B. Not required if it is installed in the industrial application
C. Required when any portion of the circulating system is located below the boiler D.
Required only in commercial applications -- ANSWER--C
A pressure reducing valve
A. Relieves system pressure in excess of the set pressure
B. Reduces the city main pressure to a safe working pressure
, Page|3
C. Reduces the working pressure to the city main pressure
D. Prevents hot water gravity circulation -- ANSWER--B
The maximum operating pressure of a low pressure steam boiler is
A. 5 psig (35kPa)
B. 15 psig (100 kPa)
C. 100 psig (690 kPa)
D. 150 psig (1035 kPa) -- ANSWER--B
A scotch marine boiler is what type of boiler?
A. Two pass boiler
B. Copper tube boiler
C. Fire tube boiler
D. Four pass water tube boiler -- ANSWER--C
A fire tube boiler has:
A. Water outside the tube and flue gases outside
B. Water inside the tubes and flue gasses outside
C. Water inside the tubes and water outside
, Page|4
D. Water outside the tubes and flue gases inside -- ANSWER--D
Why is a pressure relief valve installed on a pool heater system?
A. To maintain the pool water level
B. To prevent over pressurizing the filter
C. To prevent damage to the system
D. To relieve excess water pressure caused by solar gun -- ANSWER--C
When does an electrically operated automatic vent damper on a mid-efficiency furnace open?
A. Before the ignition cycle
B. When the furnace is hot
C. At the same time as the gas comes on
D. When the main switch is turned on -- ANSWER--A
What is the minimum distance the vent of a Category 4 furnace with an input under 100,000
Btuh can terminate from a combustion air inlet of any other appliance?
A. 12"
B. 36"
C. 60"
TSSA G2 ACTUAL EXAM Q&A TESTED AND
APPROVED NEWLY MODIFIED EXAM
GRADED A+
Before lighting a burner in a steam boiler, ensure that:
A. there is water in the boiler
B. the temperature controller is set properly
C. the main burner test firing valve is turned on
D. the safety valves are open -- ANSWER--A
The recommended water temperature setting from a mixing valve to the domestic water
system in combination heating systems that employ oil-fired water heaters for heating potable
water and for space heating is:
A. 43°C (110°F)
B. 49°C to 54°C (120°F to 130°F)
C. 60°C to 66°C (140°F to 150°F)
D. 83°C (180°F) -- ANSWER--B
An inverted sensor (measures water level) can be found operating what type of appliance?
A. Hot water boiler
, Page|2
B. Steam water boiler
C. Domestic hot water storage tank
D. Domestic potable hot water tank -- ANSWER--D
A backflow prevent used in a hydronic heating system is used to:
A. Keep hot water from entering the cold water system
B. Hold the pressure on the system during a temporary shutdown to prevent the entry of air
C. Prevent the heating water from circulating the wrong way in the system
D. Keep non-combustible water from entering the drinking water system -- ANSWER--D
A low water cut off device on an automatically fired hot water heating boiler rated at 350,000
Btuh (102 kW) is:
A. Not required if a limit control is installed
B. Not required if it is installed in the industrial application
C. Required when any portion of the circulating system is located below the boiler D.
Required only in commercial applications -- ANSWER--C
A pressure reducing valve
A. Relieves system pressure in excess of the set pressure
B. Reduces the city main pressure to a safe working pressure
, Page|3
C. Reduces the working pressure to the city main pressure
D. Prevents hot water gravity circulation -- ANSWER--B
The maximum operating pressure of a low pressure steam boiler is
A. 5 psig (35kPa)
B. 15 psig (100 kPa)
C. 100 psig (690 kPa)
D. 150 psig (1035 kPa) -- ANSWER--B
A scotch marine boiler is what type of boiler?
A. Two pass boiler
B. Copper tube boiler
C. Fire tube boiler
D. Four pass water tube boiler -- ANSWER--C
A fire tube boiler has:
A. Water outside the tube and flue gases outside
B. Water inside the tubes and flue gasses outside
C. Water inside the tubes and water outside
, Page|4
D. Water outside the tubes and flue gases inside -- ANSWER--D
Why is a pressure relief valve installed on a pool heater system?
A. To maintain the pool water level
B. To prevent over pressurizing the filter
C. To prevent damage to the system
D. To relieve excess water pressure caused by solar gun -- ANSWER--C
When does an electrically operated automatic vent damper on a mid-efficiency furnace open?
A. Before the ignition cycle
B. When the furnace is hot
C. At the same time as the gas comes on
D. When the main switch is turned on -- ANSWER--A
What is the minimum distance the vent of a Category 4 furnace with an input under 100,000
Btuh can terminate from a combustion air inlet of any other appliance?
A. 12"
B. 36"
C. 60"
