For the air conditioning and ventilation system used for smoke control, its fans (or air conditioners) and valves are controlled by the electrical fire protection system.

The status signals of multiple fire dampers in the same air system are connected in parallel, and the latter is interlocked with the fan.

The smoke exhaust fan can be manually / automatically started and stopped by the fire control center, and can be interlocked by the opening of the smoke exhaust outlet (valve).

The smoke exhaust fan is interlocked and shut down after the 280 ℃ fire damper set in front of the fan acts. The smoke exhaust outlet shall be opened and controlled according to the area it bears. The smoke exhaust outlet can be opened remotely and manually locally by the fire center.

All smoke exhaust fans are equipped with smoke exhaust fire dampers that automatically close at 280 ℃. When the smoke temperature reaches 280 ℃, the fire dampers will automatically close, and the linkage smoke exhaust fans will stop at the same time, and the fans are required to work continuously at 280 ℃ for 30min.

All smoke exhaust pipes installed in the ceiling are wrapped with non combustible materials, and the distance from combustible materials is not less than 150mm. When the air conditioning and ventilation pipes pass through the fire zone, they are wrapped with non combustible materials.