Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 52

Automatic and manual actuating device of open type automatic sprinkler system shall be installed pursuant to the following provisions. But it is allowable that automatic actuating device is not installed where the receiving instrument is located in places where there are people at other times and the device can be immediately started in case of fire.1.Automatic actuating device shall comply with the following provisions:(1)Deluge valve and pressurization and driving device shall be actuated upon starting of sensing nozzle or detector.(2)One sensing nozzle with a rated temperature of not more than 79℃ shall be equipped for every 20m2, and at least one fixed temperature Type I or Type II detector shall be equipped in every discharge area pursuant to Article 120.(3)Sensing nozzle shall be placed in a location where the height of the mounting surface from the floor is not more than 5m and fire can be effectively detected.2.Manual actuating device shall comply with the following provisions:(1)A manual starting valve shall be equipped with a height from the ground not less than 0.8m and not more than1.5m, and indicating characters of “Manual Starting Valve” shall be obviously marked thereby.(2)Deluge valve and pressurization and driving device shall be actuated upon motion of manual starting valve.