How should heat detectors be positioned on walls?

Heat detectors should be positioned with the top of the detector at least 4 inches from the ceiling to ensure optimal functionality. This placement allows the detector to effectively sense temperatures that rise during a fire, as hot air naturally rises to the ceiling area. By maintaining this distance, the detector can respond appropriately to increased temperatures while avoiding potential false activations caused by thermal influences such as HVAC systems or ambient conditions at the very ceiling line.

Positioning the detector with the top at least 4 inches from the ceiling helps prevent it from being too close to any obstructions that might hinder its ability to detect heat efficiently. Ensuring that it is not flush against the ceiling minimizes any interference that may arise from air movement or thermal stratification, creating a more reliable response to genuine heat sources. Proper placement is vital for the overall effectiveness of fire detection and the safety of the environment it is monitoring.