What is the minimum distance a heat detector should be installed from the side wall when located on the ceiling?

The recommended minimum distance for a heat detector hanging from the ceiling to the nearest side wall is 4 inches. This guideline is established to ensure effective heat detection in a space. When a heat detector is placed close to a wall, it may not accurately sense temperature changes occurring in the center of the room. Any obstruction caused by the wall could hinder the detector's ability to respond to a fire or increase in temperature, potentially delaying alerts in an emergency.

By adhering to the 4-inch minimum distance, the detector can function optimally, allowing for open airflow around it, which enhances its ability to detect rising heat more efficiently. This practice is crucial for maintaining safety standards and ensuring that the alarm systems work as intended in providing an early warning during fire incidents.