What is one advantage of using pre-purge operation in an oil burner?

Using pre-purge operation in an oil burner offers several advantages, one of which is achieving cleaner ignition. Pre-purge involves running the burner for a brief period before the oil is introduced, allowing any unburned fuel or combustible gases present in the combustion chamber to be vented out. This process reduces the likelihood of incomplete combustion, which can lead to excess soot and emissions. By ensuring that the combustion chamber is clear of flammable gases, the pre-purge operation helps to create conditions that are more favorable for a clean and efficient ignition of the oil when it is introduced. This not only enhances the efficiency of the burner but also helps in maintaining a cleaner combustion process overall, thereby minimizing the formation of pollutants.