In a burner with three fixed capacity nozzles, how are the secondary and tertiary nozzles ignited?

In a burner equipped with three fixed capacity nozzles, the secondary and tertiary nozzles are ignited by the flames produced by the primary burner. This setup is designed to ensure that the additional nozzles are only activated after the initial ignition has successfully taken place, reducing the risk of unwanted ignition and maintaining safety within the burner system.

The primary burner serves as the source of heat and flame, which is critical for igniting the fuel coming from the secondary and tertiary nozzles. Once the primary burner is lit, the increased temperature and flames facilitate the ignition of the fuel from these additional nozzles, allowing the burner to achieve its full operational capacity efficiently.

In contrast, other methods such as using an external ignition source or manual ignition are generally less common in automated systems where safety and efficiency are priorities. An automatic system could refer to various types of ignition technologies but would not specifically imply the interaction of a primary burner igniting secondary nozzles. Thus, the ignition process primarily relies on the flame from the primary burner for the subsequent nozzles.