Fire — Alarm Cause And Effect Matrix

A Fire Alarm Cause and Effect (C&E) Matrix is a technical document that maps out the logic of a fire detection system. It serves as a "life safety map," ensuring that specific inputs (causes) trigger the correct automated responses (effects) to protect occupants and property. Core Components

C. Clarity of Delays & Sequences

Waterflow Switches: Sensors that detect when a sprinkler head has broken and water is moving through the pipes. Gas Detection: Sensors for CO or flammable gases. fire alarm cause and effect matrix

• [ ] Does it list every input device type?
• [ ] Does it specify delays for HVAC shutdown and elevator recall?
• [ ] Has it been approved by the local Authority Having Jurisdiction (Fire Marshal)?
• [ ] Is a physical copy stored inside the Fire Alarm Control Panel?
• [ ] Has it been updated within the last 24 months?

IoT Integration: Cause: Smoke detector + People counting camera sees 50 people in a dead-end corridor. Effect: Activate directional sounders pointing people away from the fire, not just the standard nearest exit. A Fire Alarm Cause and Effect (C&E) Matrix

• Detection Criteria: Flow > X GPM sustained
• Alarm Class: Fire Alarm / Supervisory (depending on system)
• Notification: Building-wide horns/strobes (Temporal-3)
• Panel Outputs: General alarm relay, notify suppression controller
• Annunciation: "Waterflow — Sprinkler Riser 1" on FACU
• Controls: HVAC shutdown, pressurize stair shafts, unlock egress doors
• Suppression: Confirms suppression in progress; interlocks prevent false agent release
• Monitoring: Central station immediate transmit
• Reset: Requires manual investigation and reset
• etc.

These are the devices that trigger a signal to the Fire Alarm Control Panel (FACP): [ ] Does it list every input device type