Black Seal Test || Solved Correctly.
What does PSIA stand for? correct answers Psig + atmospheric pressure
Carryover can lead to: correct answers Water Hammer
Water column & gauge glass should be blown down: correct answers Daily
If water leaves the boiler at 170•, what temperature does it return at? correct answers 150•
What is the most common cause of cast iron boiler failure? correct answers Cracking
The positioning control cannot function without: correct answers Air
What is the most common of problems in a hot water system? correct answers Air
What fire tube is most efficient? correct answers 4 Pass
Where are the combustion gases on a serpentine boiler? correct answers Below the tubes
What is the purpose of a check valve? correct answers To Prevent reverse flow & Allow flow in
one direction
A solenoid valve: correct answers Is an automatic gas shutoff valve
The most common type of pressure control device used is the: correct answers Mercury Tube
,A steam gauge is calibrated in: correct answers Lbs/Sq. Inch
Heavy soot on the fireside of tubes: correct answers Should be removed for better heat transfer
What code is a heating boiler built to: correct answers ASME Section IV(4)
When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to: correct answers
Protect Bourdon tube from steam
External feed water treatment can be a _____ process. correct answers Cold lime soda, hot lime
soda, or ion exchange
Natural water may contain: correct answers Solids and other pollutions
What is the min. temp of a hot water boiler operation to prevent condensation? correct answers
170 F
What test is performed on re-tubed (repaired) boiler and what is the water temp.? correct answers
Hydrostatic test at 70F
T/F: The amount of draft is not affected by the height of the stack. correct answers False
Under what ASME section is the care and operation of heating boilers? correct answers Section
VI (6)
A aquastat is sensitive to changes in: correct answers Water temperature
The expansion tank in a hot water system allows for the expansion of: correct answers Water
, Who can adjust a safety valve? correct answers Manufacturer Representative
As the water in a hot water system expands: correct answers The pressure remains constant
A modulating pressuretrol controls: correct answers The boiler's high and low fire
The pressuretrol: correct answers Turns the boiler on and off
A modulating pressure control is sensitive to: correct answers Pressure
A vaporstat is sensitive to: correct answers Gas Pressure
The low water fuel cut-off should be blown down: correct answers Daily
When the vaporstat starts operating, it activates the: correct answers Fuel line solenoid valve
A low water fuel cutoff: correct answers Shuts off the fuel supply
If a baffle breaks, what happens? correct answers Increase of furnace gases & stack temperature
Natural draft is produced by: correct answers Difference in temperature outside chimney from
inside chimney
When would a high suction line be used in a fuel tank? correct answers When there is sludge or
water in the tank
If a draft fan is located between the boiler and chimney, what type of draft system is it? correct
answers Induced Draft
What does PSIA stand for? correct answers Psig + atmospheric pressure
Carryover can lead to: correct answers Water Hammer
Water column & gauge glass should be blown down: correct answers Daily
If water leaves the boiler at 170•, what temperature does it return at? correct answers 150•
What is the most common cause of cast iron boiler failure? correct answers Cracking
The positioning control cannot function without: correct answers Air
What is the most common of problems in a hot water system? correct answers Air
What fire tube is most efficient? correct answers 4 Pass
Where are the combustion gases on a serpentine boiler? correct answers Below the tubes
What is the purpose of a check valve? correct answers To Prevent reverse flow & Allow flow in
one direction
A solenoid valve: correct answers Is an automatic gas shutoff valve
The most common type of pressure control device used is the: correct answers Mercury Tube
,A steam gauge is calibrated in: correct answers Lbs/Sq. Inch
Heavy soot on the fireside of tubes: correct answers Should be removed for better heat transfer
What code is a heating boiler built to: correct answers ASME Section IV(4)
When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to: correct answers
Protect Bourdon tube from steam
External feed water treatment can be a _____ process. correct answers Cold lime soda, hot lime
soda, or ion exchange
Natural water may contain: correct answers Solids and other pollutions
What is the min. temp of a hot water boiler operation to prevent condensation? correct answers
170 F
What test is performed on re-tubed (repaired) boiler and what is the water temp.? correct answers
Hydrostatic test at 70F
T/F: The amount of draft is not affected by the height of the stack. correct answers False
Under what ASME section is the care and operation of heating boilers? correct answers Section
VI (6)
A aquastat is sensitive to changes in: correct answers Water temperature
The expansion tank in a hot water system allows for the expansion of: correct answers Water
, Who can adjust a safety valve? correct answers Manufacturer Representative
As the water in a hot water system expands: correct answers The pressure remains constant
A modulating pressuretrol controls: correct answers The boiler's high and low fire
The pressuretrol: correct answers Turns the boiler on and off
A modulating pressure control is sensitive to: correct answers Pressure
A vaporstat is sensitive to: correct answers Gas Pressure
The low water fuel cut-off should be blown down: correct answers Daily
When the vaporstat starts operating, it activates the: correct answers Fuel line solenoid valve
A low water fuel cutoff: correct answers Shuts off the fuel supply
If a baffle breaks, what happens? correct answers Increase of furnace gases & stack temperature
Natural draft is produced by: correct answers Difference in temperature outside chimney from
inside chimney
When would a high suction line be used in a fuel tank? correct answers When there is sludge or
water in the tank
If a draft fan is located between the boiler and chimney, what type of draft system is it? correct
answers Induced Draft
