What is the minimum distance that sprinklers should be from a wall?

Sprinklers should generally be installed with a minimum distance of 4 inches from a wall to ensure proper coverage and operation. This distance allows the spray from the sprinkler to reach areas adjacent to the wall, preventing dry spots that could occur if the distance is too short.

Being positioned too closely to a wall can restrict the water distribution pattern, diminishing the sprinkler's effectiveness in protecting the area it covers. Additionally, the 4-inch guideline accommodates various factors such as the type of sprinkler and its intended design, along with installation practices that help to optimize the system's performance. In practice, following this minimum distance aids in meeting safety codes and standards for fire protection systems, ensuring that the sprinkler system functions as designed in case of a fire emergency.