What sprinkler system is FD circuit?

What sprinkler system is FD circuit?

• A. High temperature alarm
• B. Flooding alarm
• C. Sprinkler alarm
• D. Water alarm

Answer: (B)

In a sprinkler system, the FD circuit is the Fire Detection circuit that monitors the sprinkler piping for water flow. When a sprinkler head is activated or water begins to flow through the system, a flow signal is produced and sent on this circuit. That flow signal triggers the flooding alarm, which is the alert indicating that the sprinkler system is actively delivering water and the area is being flooded with water. This is distinct from a high temperature alarm (which reacts to heat in a space), a general sprinkler alarm (which may be used for activation without referencing water flow), or a water alarm (which detects water in places where it shouldn’t be but not specifically the sprinkler flow). So the FD circuit is the flooding alarm.

In a sprinkler system, the FD circuit is the Fire Detection circuit that monitors the sprinkler piping for water flow. When a sprinkler head is activated or water begins to flow through the system, a flow signal is produced and sent on this circuit. That flow signal triggers the flooding alarm, which is the alert indicating that the sprinkler system is actively delivering water and the area is being flooded with water. This is distinct from a high temperature alarm (which reacts to heat in a space), a general sprinkler alarm (which may be used for activation without referencing water flow), or a water alarm (which detects water in places where it shouldn’t be but not specifically the sprinkler flow). So the FD circuit is the flooding alarm.