What could happen if excess oil in the combustion chamber is ignited?

If excess oil in the combustion chamber is ignited, it may cause overfiring. Overfiring occurs when there is more fuel than the system can efficiently combust, leading to an increase in temperature and pressure within the combustion chamber. This can result in unsafe operating conditions, where the burner operates beyond its design specifications, potentially causing damage to the burner, heat exchanger, or other components of the heating system.

It's essential for combustion systems to maintain a balance between fuel and air for optimal performance. Excess fuel can lead to incomplete combustion and an elevated risk of malfunctions. While other outcomes like system shutdowns or attempts to extinguish excess flames may occur, the primary concern revolves around overfiring due to the hazardous conditions it can create.