What is the minimum spacing that a heat detector integrally mounted on a smoke detector may be listed for?

The minimum spacing for a heat detector that is integrally mounted on a smoke detector is specified to be 50 feet. This distance ensures that the heat detector can effectively monitor the environment without being too far from potential sources of heat. The specific spacing requirements are influenced by factors such as the type of occupancy and the expected fire hazards present in the area, making it important to follow established guidelines for effective fire safety.

By adhering to this minimum spacing, the systems are designed to provide timely alerts in case of a fire, enhancing safety and reducing the risk of property damage or life loss. The chosen distance reflects the balance between ensuring sufficient coverage while minimizing the likelihood of false alarms from heat sources that are not fire-related. Thus, the correct answer underscores the importance of proper installation practices in maintaining effective fire detection systems.