What is the minimum distance a sprinkler head can be from the wall?

The minimum distance a sprinkler head can be from the wall is 4 inches. This requirement is in place to ensure that the sprinkler system operates effectively and provides proper coverage within the designated area. When sprinkler heads are installed too close to walls, performance can be compromised, as walls can obstruct the spray pattern necessary for effective fire suppression.

By adhering to the 4-inch rule, the system is designed to minimize the risk of cold soldering or obstruction of the water spray, ensuring the sprinkler operates as intended without interference from walls or other structures. This distance helps achieve an optimal distribution of water, enabling the sprinkler to activate and manage fire risks more efficiently.