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