Podcast
Questions and Answers
What is the acceptable color for a light fuel oil flame?
What is the acceptable color for a light fuel oil flame?
- Bright orange with yellow at the tips of the flame
- Bright yellow with orange at the tips of the flame (correct)
- Blue with orange at the tips of the flame
- Predominantly blue
What could cause a smoky flame in an oil firing system?
What could cause a smoky flame in an oil firing system?
- Low fuel temperature
- Incorrect fuel-air ratio
- Dirty burner nozzle
- All of the above (correct)
What may be indicated by a gradual increase in stack temperature?
What may be indicated by a gradual increase in stack temperature?
- Heat transfer efficiency is decreasing (correct)
- No specific indication
- Fireside or waterside cleaning is required
- Heating surfaces are clean
What should be done if there is an excessive temperature rise in the flue gases?
What should be done if there is an excessive temperature rise in the flue gases?
What is over-firing in the context of boilers?
What is over-firing in the context of boilers?
Why should the hot water set point not be below 75°C in non-condensing boilers?
Why should the hot water set point not be below 75°C in non-condensing boilers?
What is the reason for regular checks of hot water heating boilers?
What is the reason for regular checks of hot water heating boilers?
What are some routine checks for hot water heating boilers?
What are some routine checks for hot water heating boilers?
What does it mean for a hot water boiler to be fully automatic?
What does it mean for a hot water boiler to be fully automatic?
What does the burner programmed combustion control do?
What does the burner programmed combustion control do?
What are some of the daily routine procedures for operators of hot water boilers?
What are some of the daily routine procedures for operators of hot water boilers?
Why do hot water boilers still need regular attention despite their automatic systems?
Why do hot water boilers still need regular attention despite their automatic systems?
What is the consequence of minor water losses in an upfeed heating system?
What is the consequence of minor water losses in an upfeed heating system?
What may be a worthwhile investment for a heating system equipped with an automatic make-up valve?
What may be a worthwhile investment for a heating system equipped with an automatic make-up valve?
What can happen if an expansion tank is full and the piping system cannot accommodate the increase in water volume when the boiler fires?
What can happen if an expansion tank is full and the piping system cannot accommodate the increase in water volume when the boiler fires?
How should bladder-style expansion tanks be checked for air charge?
How should bladder-style expansion tanks be checked for air charge?
What can be a common source of air leaks in conventional air cushion expansion tanks?
What can be a common source of air leaks in conventional air cushion expansion tanks?
What is required for closed hot water heating systems that have had major leaks or equipment repair?
What is required for closed hot water heating systems that have had major leaks or equipment repair?
Under what conditions are hot water heating boilers blown off or blown down?
Under what conditions are hot water heating boilers blown off or blown down?
What is a good practice to reduce the need for internal water treatment?
What is a good practice to reduce the need for internal water treatment?
