Why is reducing airflow necessary when too much oil is in the combustion chamber?

Reducing airflow when there is too much oil in the combustion chamber is necessary to control combustion and prevent overheating. When excessive oil accumulates, the combustion process can become inefficient, leading to unburned fuel and an increase in flue gas temperatures. By reducing airflow, the ratio of fuel to air can be adjusted, promoting more complete combustion and ensuring that the system operates within safe temperature limits. Overheating in the combustion chamber can result in damage to the burner, reduced efficiency, and a potential risk of hazardous conditions. Therefore, managing the airflow effectively helps maintain the balance needed for optimal and safe combustion processes in oil burners.