Can horizontal sidewall sprinkler heads be used in pre-action systems?

Horizontal sidewall sprinkler heads can indeed be used in pre-action systems because they are designed to effectively detect and respond to heat and smoke from a fire in various installation scenarios. Pre-action sprinkler systems are unique in that they combine elements of both wet and dry systems. They require a two-step process for activation: the detection of smoke or heat triggers the release of water from a pre-filled piping system only upon the operation of the sprinkler heads.

Using sidewall heads provides flexibility in design, especially in rooms with limited vertical space or when aesthetics require them to be mounted on walls rather than ceilings. This configuration allows for adequate coverage of the area while still adhering to safety protocols.

It's essential to install these heads in compliance with manufacturer guidelines and local codes, which outline installation height, spacing criteria, and other specifics to ensure proper functioning in the context of a pre-action system.