Black Seal Low Pressure Exam Questions and
Answers
If a baffle breaks, what happens? - -Increase of furnace gases & stack temperature
-When would a high suction line be used in a fuel tank? - -when there is sludge or water in
the tank
-If not performed annually, what can cause a catastrophic event - -Full boiler inspection
-The science of heating and cooling with water is called - -hydronics
-What is the most common cause of cast iron boiler failure? - -Cracking
-What is the most common cause of problems in a hot water system? - -air
-A steam gauge is calibrated in - -pounds per square inch
-What code is a heating boiler built to - -ASME Section IV
-The expansion tank is a hot water system allows for the expansion of - -water
-As the water in a hot water system expands - -pressure remains constant
-The most common type of pressure control device used is the - -Mercury tube
-Heavy soot on the fireside of tubes: - -Should be removed for better heat transfer
-When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to - -protect
bourdon tube from steam
-What is the min. temp. of a hot water boiler operation to prevent condensation? - -170 F
-The amount of draft is not affect by the height of the stack - -False
-An aquastat is sensitive to change in - -water temperature
-who can adjust a safety valve? - -Manufacturer representative
-the pressuretrol - -Turns the burner on and off
-A modulating pressuretrol controls - -The boiler's high and low fire
-A modulating pressure control is sensitive to - -pressure
Answers
If a baffle breaks, what happens? - -Increase of furnace gases & stack temperature
-When would a high suction line be used in a fuel tank? - -when there is sludge or water in
the tank
-If not performed annually, what can cause a catastrophic event - -Full boiler inspection
-The science of heating and cooling with water is called - -hydronics
-What is the most common cause of cast iron boiler failure? - -Cracking
-What is the most common cause of problems in a hot water system? - -air
-A steam gauge is calibrated in - -pounds per square inch
-What code is a heating boiler built to - -ASME Section IV
-The expansion tank is a hot water system allows for the expansion of - -water
-As the water in a hot water system expands - -pressure remains constant
-The most common type of pressure control device used is the - -Mercury tube
-Heavy soot on the fireside of tubes: - -Should be removed for better heat transfer
-When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to - -protect
bourdon tube from steam
-What is the min. temp. of a hot water boiler operation to prevent condensation? - -170 F
-The amount of draft is not affect by the height of the stack - -False
-An aquastat is sensitive to change in - -water temperature
-who can adjust a safety valve? - -Manufacturer representative
-the pressuretrol - -Turns the burner on and off
-A modulating pressuretrol controls - -The boiler's high and low fire
-A modulating pressure control is sensitive to - -pressure
