Sectional fire protection for attic spaces

A fire protection system for the protection of an attic space defined by a ceiling base, a roof deck disposed above the ceiling base, the roof deck being sloped with respect to the ceiling base to define a peak region, the system disposed in the attic space, the system comprising:

• at least one sectional deluge sub-system for protection of a zone section of the attic space, the deluge sub-system including:
• a fluid control thermal detection device located above the ceiling base within a maximum radial distance of the peak region, the maximum radial distance is less than or equal two feet, the fluid control thermal detection device having an inlet for connection to a fluid source and at least one outlet, a valve coupled with the inlet and the at least one outlet, and a thermal spot detection assembly coupled with the valve, the thermal spot detection assembly comprising at least one of a fusible assembly, a thermally responsive bulb, or an electrically responsive actuator;
• and
• at least one fluid distribution device comprising at least one of a deflector and a diffuser, the at least one fluid distribution device disposed between the roof deck and the ceiling base at a minimum distance greater than or equal to eight feet and less than or equal to twelve feet from an intersection of the roof deck and the ceiling base such that no fluid distribution device is closer to the intersection than the minimum distance, the fluid distribution device being pipe connected to the at least one outlet of the fluid control thermal detection device for receipt of firefighting fluid from the fluid control thermal detection device, and wherein the fluid distribution device is in an open state at a temperature less than a temperature at which the fluid control thermal detection device detects a fire condition.