Which system requires control from the Fire Department during smoke purge operations?

The post-fire smoke purge systems require control from the Fire Department during smoke purge operations because these systems are designed to remove smoke and heat from a building after a fire has occurred. The Fire Department's involvement is crucial to ensure that the purge is conducted safely and effectively, typically following the extinguishment of the fire. This coordination helps to prevent the spread of smoke and ensures that conditions in the building are monitored and managed properly to protect both the remaining occupants and the firefighters operating within the structure.

In a post-fire scenario, the fire department assesses the conditions and determines when it is safe to implement smoke purge operations. Such systems often involve mechanical fans or ventilation systems that need to be carefully controlled to avoid reigniting embers or creating hazardous conditions.

In contrast, other systems such as sprinkler systems, CO2 suppression systems, and manual alarm systems function independently once activated, or they do not require the same level of coordination with the Fire Department regarding smoke purge operations specifically.