20 Questions
What is the acceptable color for a light fuel oil flame?
Bright yellow with orange at the tips of the flame
What could cause a smoky flame in an oil firing system?
All of the above
What may be indicated by a gradual increase in stack temperature?
Heat transfer efficiency is decreasing
What should be done if there is an excessive temperature rise in the flue gases?
Flue gas analysis and excess air adjustment
What is over-firing in the context of boilers?
More heat production than the boiler is designed to transfer
Why should the hot water set point not be below 75°C in non-condensing boilers?
To prevent flue gas condensation
What is the reason for regular checks of hot water heating boilers?
To guarantee safe and efficient boiler function during unsupervised periods
What are some routine checks for hot water heating boilers?
Monitoring the water pressure and flame condition
What does it mean for a hot water boiler to be fully automatic?
It starts, maintains hot water at set point, and stops without operator intervention
What does the burner programmed combustion control do?
Sequences the operation of the burner and maintains safe and efficient operation
What are some of the daily routine procedures for operators of hot water boilers?
Observing the condition of the burner flame and inspecting water pressure
Why do hot water boilers still need regular attention despite their automatic systems?
To ensure safe and dependable operation
What is the consequence of minor water losses in an upfeed heating system?
The operation of the boiler is not affected, but the upper floors of the building will be cold.
What may be a worthwhile investment for a heating system equipped with an automatic make-up valve?
Installing a water meter in the make-up line
What can happen if an expansion tank is full and the piping system cannot accommodate the increase in water volume when the boiler fires?
The safety valve opens and discharges water repeatedly.
How should bladder-style expansion tanks be checked for air charge?
Use a tire pressure gauge to read the tank pressure and adjust as needed.
What can be a common source of air leaks in conventional air cushion expansion tanks?
Old and brittle gauge glass gaskets
What is required for closed hot water heating systems that have had major leaks or equipment repair?
Additional treatment chemical
Under what conditions are hot water heating boilers blown off or blown down?
To drain boilers requiring structural repair or waterside inspection
What is a good practice to reduce the need for internal water treatment?
Restricting blowoff and blowdown
Test your knowledge of hot water heating boiler operation with this quiz. Learn about the routine checks required to ensure safe and efficient functioning during unsupervised periods.
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