Overview of the Notifier NFS-320 Fire Alarm Control Panel
The Notifier NFS-320 is an intelligent Fire Alarm Control Panel (FACP) suitable for various applications. It is a modular system with operating features detailed in the NFS-320/E/C Operations Manual (P/N 52747). For installations using NFS-320C, an optional ACM Series annunciator can be added.
The Notifier NFS-320 is designed as a versatile fire alarm control panel, suitable for a broad range of applications. Its modular design allows for flexible configuration and expansion. The system’s operation is comprehensively documented in the NFS-320/E/C Operations Manual (P/N 52747), which serves as a crucial resource for understanding its capabilities.
The NFS-320 supports various functionalities, including fire detection, alarm annunciation, and system monitoring. It can be integrated with optional modules like the ACM Series annunciator, enhancing its capacity to manage zones and points. Notably, the term NFS-320 refers to several models, including NFS-320, NFS-320E, and NFS-320C. For mass notification applications, Class A circuits are designated as Class X.
Key Features and Capabilities
The NFS-320 offers intelligent fire alarm control, combination fire/security functionality, and mass notification applications. It supports features like Read Status via CRT-2 and agent release with abort capabilities, enhancing its versatility.
Intelligent Fire Alarm Control
The Notifier NFS-320 excels in intelligent fire alarm control, offering advanced features for accurate and responsive detection. It supports various detectors, including smoke and heat detectors, alongside manual pull stations, integrating them seamlessly for comprehensive fire detection. The system’s intelligent sensing capabilities, including pre-alarm ONYX intelligent sensing, provide nine levels of sensitivity adjustment.
The NFS-320 can differentiate between normal and emergency conditions, reducing false alarms. Its ability to interface with the CRT-2 allows users to view the status of detectors and other devices, enhancing monitoring and control. Furthermore, it supports automatic sensitivity adjustments and day/night mode switching.
Combination Fire/Security System Functionality
The NFS-320 offers combination fire and security system functionality, providing an integrated approach to safety. When properly installed and operated according to the manual, the NFS-320 serves as both a fire alarm and security system. This integration simplifies management and response protocols, enhancing overall safety.
The system can monitor doors, windows, and other security points, triggering alarms upon unauthorized access. It centralizes monitoring and control, reducing the need for separate systems. Integrating fire and security functions enhances situational awareness, improving response coordination during emergencies. The NFS-320 streamlines operations, offering a unified platform for managing fire and security needs.
Mass Notification Applications
The NFS-320 supports mass notification applications, enhancing its utility in emergency situations. Class A circuits are used for mass notification, referred to as Class X in this manual. This feature enables the system to deliver critical information to a large number of people.
The system can broadcast voice messages, alerts, and instructions to specific zones or the entire facility. This capability is vital during events like severe weather, security threats, or other emergencies. Clear and timely communication can significantly improve safety and reduce panic. The NFS-320 ensures that crucial information reaches everyone promptly, facilitating effective response and evacuation.
Operating Instructions
The NFS-320 control panel uses five Control Keys for operation. The Acknowledge/Scroll Display key responds to alarms or troubles. Refer to the NFS-320/E/C Operations Manual (P/N 52747:J3) for complete operating details and instructions on use of controls.
Control Keys and Their Functions
The Notifier NFS-320 Fire Alarm Control Panel includes several control keys that enable users to manage the system effectively. These keys are crucial for responding to alarms, silencing signals, and resetting the system after an event. The Acknowledge/Scroll Display key is used to acknowledge new alarm or trouble signals, allowing users to view the details of the event on the display.
The Signal Silence key is used to silence audible warning devices once an alarm has been acknowledged. The Drill key, when pressed for 2 seconds, activates silenceable circuits and sends a Drill Activated message. This function is designed to prevent accidental activations. Refer to the NFS-320/E/C Operations Manual for comprehensive instructions.
Responding to Alarm and Trouble Signals
When the Notifier NFS-320 detects an alarm or trouble signal, prompt and appropriate action is essential. Upon receiving a new alarm or trouble signal, the first step is to use the Acknowledge/Scroll Display key. This key silences the alarm sound and allows you to view specific details about the event on the LCD display.
After acknowledging the alarm, assess the situation and take necessary actions as per the emergency response plan. If it’s a false alarm, you can reset the system using the Reset key. Refer to the NFS-320/E/C Operations Manual for detailed troubleshooting steps.
CRT-2 Interface
The CRT-2 interface allows users to interact with the NFS-320. It facilitates functions like Read Status, enabling users to view the status of devices connected to the fire alarm control panel.
Using the CRT-2 for Read Status
The CRT-2 interface on the NFS-320 system is a valuable tool for monitoring the status of various devices connected to the fire alarm control panel. Specifically, the ‘Read Status’ function allows users to view the current state of detectors and other modules within the system. Section C.3 of the NFS-320/E/C Operations Manual (P/N 52747:E1) provides a detailed overview of performing Read Status functions from a CRT-2 terminal.
Before utilizing this feature, it’s essential to ensure that the CRT port is properly enabled. Instructions for enabling the CRT port can be found in the NFS-320 Programming Manual. Refer to that manual for the necessary steps to activate the port and prepare it for communication with the CRT-2 device.
Installation Procedures
Refer to the NFS-320/E/C Installation Manual (P/N 52745:M2) for detailed guidelines. Ensuring all mounting holes are secured is critical. Follow instructions to connect agent release-abort stations and program releasing circuits.
Mounting and Wiring Guidelines
Consult the NFS-320 Installation Manual for precise mounting instructions, ensuring all mounting holes are securely fastened using screws or standoffs to maintain continuity. Adherence to wiring diagrams is crucial for proper system functionality. Grounding procedures outlined in the manual must be followed meticulously.
For installations using the NFS-320C, the ACM Series annunciator can be mounted within the same cabinet, offering up to 48 zones/points. Refer to document DN-60085 for specific details. Always verify the correct voltage and current ratings of all connected devices. Proper wire gauge selection is essential to prevent voltage drops and ensure reliable operation. All wiring must comply with local and national electrical codes.
Connecting Agent Release-Abort Stations
To connect an NBG-12LRA Agent Release-Abort Station, program the releasing circuit using the Type Code REL CKT ULC or RELEASE CKT. These circuits are supervised for both opens and shorts to ensure integrity. Activation of a Manual Release Switch overrides the Predischarge Delay and any active Abort Release, leading to immediate agent release.
Refer to the NFS-320/E/C Programming Manual for instructions on setting the Soak Timer, which may influence the releasing sequence. Ensure proper wiring as per the manual’s diagrams. Verify that the power supply meets the station’s requirements. All connections should be secure and properly insulated.
Programming the NFS-320
Programming the NFS-320 involves enabling features like the CRT port, as described in the NFS-320 Programming Manual (P/N 52746). Setting the Soak Timer is another programmable feature; refer to the manual for specific instructions.
Enabling the CRT Port
Enabling the CRT port on the Notifier NFS-320 is a crucial step for utilizing the CRT-2 interface, which allows users to perform Read Status functions. The specific procedure for enabling the CRT port can be found in the NFS-320 Programming Manual. Access to the CRT port is necessary for viewing the status of detectors and other devices connected to the fire alarm system.
The NFS-320 Programming Manual provides detailed instructions on how to configure the panel to allow communication through the CRT port. This setup is essential for diagnostics and monitoring of the system’s performance. Always refer to the latest version of the programming manual for accurate steps.
Setting the Soak Timer
The Soak Timer is a configurable setting within the Notifier NFS-320 system, and its configuration is detailed in the NFS-320/E/C Programming Manual. The programming manual offers instructions for correctly setting the soak timer duration. This setting is crucial for controlling the agent release function, often used in conjunction with agent release-abort stations like the NBG-12LRA.
Refer to the NFS-320/E/C Programming Manual to ensure the timer is appropriately set for your specific application. The correct value ensures the fire suppression system functions as intended during an emergency. Incorrect configuration may cause system malfunction or unwanted agent release.
Limitations of the System
While effective, the NFS-320 is not a substitute for insurance. Automatic fire alarm systems, outlined in the manuals, have inherent limitations. These limitations are crucial to understand for comprehensive fire safety planning and risk management.
Fire Alarm & Emergency Communication System Limitations
It is important to acknowledge that while a life safety system like the NFS-320 can lower insurance rates, it does not replace life and property insurance. An automatic fire alarm system, typically composed of smoke detectors, heat detectors, manual pull stations, and audible warning devices, has inherent limitations.
The system’s effectiveness depends on proper installation, regular maintenance, and the responsiveness of occupants. Factors such as the fire’s location, the presence of obstructions, and the system’s programming can affect its performance. Therefore, comprehensive fire safety planning should include insurance coverage alongside the fire alarm system. Remember to consult the relevant manuals for detailed limitations.
Relevant Standards and Codes
The NFS-320 system adheres to NFPA 70 — National Electrical Code. It also complies with NFPA 16 ౼ Standard for Deluge-Foam Water Systems. Compliance with these standards ensures safe and effective operation of the fire alarm system.
NFPA 70 ౼ National Electrical Code
NFPA 70, the National Electrical Code, is a critical standard for the safe installation of electrical systems, including fire alarm systems like the Notifier NFS-320. Adherence to NFPA 70 ensures that the wiring, overcurrent protection, grounding, and other electrical aspects of the NFS-320 system are installed in a manner that minimizes the risk of electrical hazards, such as fires and electric shock. Compliance with this code is essential for the reliable and safe operation of the fire alarm system, protecting both property and occupants. Installers should always consult the latest edition of NFPA 70;
NFPA 16 ౼ Standard for Deluge-Foam Water Systems
NFPA 16 is the standard governing the installation of deluge foam-water sprinkler systems, which are sometimes integrated with fire alarm systems like the Notifier NFS-320. This standard outlines requirements for system design, component selection, installation, testing, and maintenance. When the NFS-320 is used to trigger or monitor a deluge foam-water system, compliance with NFPA 16 ensures the system will function effectively in suppressing fires. It covers aspects such as foam concentrate properties, discharge rates, and system activation protocols. Adhering to NFPA 16 is vital for the proper integration and operation of these specialized fire suppression systems controlled by the NFS-320.
Leave a Reply
You must be logged in to post a comment.