Where shall an accessible fusible link be installed?

An accessible fusible link must be installed as close as practical to the burner to ensure immediate response in case of emergency situations, such as overheating. The fusible link is a critical safety device that melts at a specific temperature, effectively shutting off the fuel supply when it detects excessive heat. Positioning it near the burner allows for a rapid reaction to extinguish potential fires or to prevent further escalation of any hazardous conditions from occurring.

This placement helps in minimizing the distance between the safety device and the source of heat, thereby improving the overall efficiency and response time of the system when intervention is necessary. It is essential for safety systems to have easy access for testing and maintenance, which is facilitated by having the fusible link near the burner, ensuring it functions as intended when needed. Therefore, the option that states it should be as close as practical to the burner emphasizes optimum safety protocols within the heating system.