What is the purpose of a cad cell in an oil burner system?

The purpose of a cad cell in an oil burner system is to sense light in the combustion chamber. This device acts as a safety mechanism to ensure that the burner is operating properly. In the combustion process, the presence of flame indicates that burning is occurring correctly. The cad cell detects this light intensity; if the flame goes out or isn't present when it should be, the cad cell will signal the burner to shut down to prevent the risk of unburned fuel accumulating, which could lead to potential safety hazards or inefficient operation.

The cad cell's ability to monitor the flame provides a critical feedback mechanism for the entire combustion process, allowing for both safety and efficiency in oil burner operation. This is essential in maintaining safe operating conditions in heating systems.