This schematic details a comprehensive addressable fire alarm system for a multi-floor hospital building. The diagram illustrates the interconnection of three 10-loop Fire Alarm Control Panels (FACPs) controlling various detection and notification appliances across the facility. Each panel monitors specific building zones with dedicated loops for different floors: ground floor (loops 1-6), basement (loop 7), and upper floors (loops 8-10). The system integrates smoke detectors (above/below false ceiling), heat detectors, manual call points (break glass and pull station types), monitor modules for flow switches, control modules for hooter/strobe devices, and relay modules for AHU/exhaust fan shutdown. Connection details show 2Cx1.5 sq.mm FRLS PVC insulated copper conductor cabling in 25mm conduits for both loop and power circuits. The drawing includes typical mounting arrangements for ceiling devices, wall-mounted components, and integration with the PA system through relay modules. Installation details specify isolator modules at loop start/end points and after every 20 devices, providing system resilience through fault isolation capabilities.