Carryover can lead to: - (answer)Water Hammer
If water leaves the boiler at 170 degrees, what temperature does it return at? - (answer)150 Degrees
The positioning control cannot function without: - (answer)Air
What fire tube boiler is most efficient? - (answer)4 Pass
What is the purpose of a check valve? - (answer)Allows flow in one direction
A solenoid valve is: - (answer)Is an automatic gas shutoff valve
What does PSIA stand for? - (answer)PSIG + Atmospheric Pressure
Water column & gauge glass should be blown down: - (answer)Daily
What is the most common cause of cast iron boiler failure? - (answer)Cracking
What is the most common cause of problems in a hot water system? - (answer)AIR
External feedwater treatment can be a ______ process - (answer)Cold lime soda, hot lime soda, or ion
exchange.
Natural water may contain: - (answer)Solids and other pollutants
Where are the combustion gases on a serpentine boiler? - (answer)Below the tubes
A steam gauge is calibrated in: - (answer)Pounds per square inch
, BLACK SEAL LP NJ 2025 QUESTIONS WITH 100% CORRECT ANSWERS!!
What code is a heating boiler built to? - (answer)ASME Section IV
What test is performed on re-tubed (repaired) boiler and what is the water temp? - (answer)Hydrostatic
Test at 70 F
Under what ASME section is the care and operation of heating boilers? - (answer)Section VI
The expansion tank in a hot water system allows for the expansion of? - (answer)WATER
As the water in a hot water system expands: - (answer)The pressure remains constant
The most common type of pressure control device used is the: - (answer)Mercury Tube
Heavy soot on the fireside of the tubes: - (answer)Should be removed for better heat transfer
When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to: - (answer)Protect
Bourdon Tube from steam
What is the min. temp. of a hot water boiler operation to prevent condensation? - (answer)170 F
The amount of draft is not affected by the height of the stack. - (answer)FALSE
An aquastat is sensitive to changes in: - (answer)Water Temperature
Who can adjust a safety valve? - (answer)Manufacturer Representative
The pressuretrol: - (answer)Turns the boiler on an off