Silent Knight 5104B Manual: Article Plan

This comprehensive guide details the Silent Knight 5104B fire control communicator, covering installation, programming, troubleshooting, and maintenance.
It’s a six-zone system
providing digital fire reporting via standard telephone lines, eliminating costly dedicated connections.
The Silent Knight 5104B represents a robust and reliable solution for fire alarm system control and communication. As a six-zone fire control communicator, it’s designed to receive signals from fire detection devices – such as smoke detectors, heat detectors, and pull stations – and transmit critical information to a central monitoring station or fire department.
This model distinguishes itself through its ability to leverage ordinary telephone lines for digital fire reporting, a significant advantage over systems requiring dedicated communication pathways. This feature reduces installation costs and simplifies ongoing maintenance. The 5104B is UL 864 listed, signifying its adherence to stringent safety and performance standards.
Ideal for a variety of applications, including commercial buildings, schools, and healthcare facilities, the Silent Knight 5104B offers a dependable means of ensuring rapid response in the event of a fire. Its supervised inputs accommodate fire, supervisory, and tamper signals, providing a comprehensive layer of protection. Understanding its capabilities is crucial for installers, technicians, and facility managers responsible for fire safety systems.
What is a Fire Control Communicator?
A Fire Control Communicator, like the Silent Knight 5104B, is the central hub of a fire alarm system, acting as the intermediary between fire detection devices and a monitoring center. It receives signals indicating a fire or supervisory condition – such as a tamper switch activation – and then transmits this information to the appropriate authorities.

Unlike a standard fire alarm panel that primarily alerts occupants on-site, a fire control communicator actively communicates the alarm event off-site. This is achieved through various communication methods, with the 5104B utilizing standard telephone lines for digital fire reporting. This digital transmission ensures clear and accurate information delivery.
Essentially, it bridges the gap between local detection and remote response. It’s a critical component for facilities requiring 24/7 monitoring, ensuring a swift and coordinated response even when the building is unoccupied. The communicator’s ability to handle multiple zones allows for pinpointing the fire’s location, improving response efficiency.

Key Features of the 5104B Model
The Silent Knight 5104B boasts several key features making it a reliable fire control communicator. Primarily, it’s a six-zone system, capable of monitoring six independent areas for fire, supervisory, or tamper signals. This zoning capability allows for precise identification of alarm locations.
A significant advantage is its digital fire reporting over ordinary telephone lines, eliminating the need for expensive dedicated communication pathways. This digital format ensures clear and accurate transmission of alarm data to the monitoring center. The 5104B is UL 864 listed, signifying it meets stringent safety and performance standards.
Furthermore, it offers supervised inputs, constantly monitoring the integrity of the wiring and detection devices. This supervision detects open circuits or shorts, providing early warning of potential system failures. Its compatibility with Silent Knight systems ensures seamless integration, and its robust design guarantees long-term reliability.
Technical Specifications of the 5104B
The Silent Knight 5104B operates on a 12VDC power supply, with a standby current draw of only 40mA. During an alarm condition, the current increases to 80mA. It supports a maximum loop resistance of 20 ohms and is designed for use with normally open (NO) initiating devices.
The communicator features six (6) supervised zones, each capable of accepting one initiating device circuit. Input voltage range for initiating devices is 12VDC. The 5104B utilizes a 300 baud digital communication protocol for transmitting alarm signals. It’s compatible with standard touch-tone telephone lines.
Dimensions are approximately 6.5” x 8.5” x 4.5”, and it weighs around 3 lbs. Operating temperature range is 32°F to 120°F (0°C to 49°C); The unit includes a built-in battery charger for maintaining a 12VDC sealed lead-acid battery (not included). Refer to the installation manual (151053-L8) for detailed wiring specifications.
UL 864 Listing and Compliance
The Silent Knight 5104B proudly carries a UL 864 Listing, signifying it meets stringent safety and performance standards for fire alarm control communicators. This listing assures authorities having jurisdiction (AHJs) and end-users of its reliability in critical life safety applications.
Compliance extends to National Fire Protection Association (NFPA) standards, specifically NFPA 72, the National Fire Alarm and Signaling Code. The 5104B is designed to function seamlessly within systems adhering to these codes, ensuring proper operation and minimizing false alarms.
Furthermore, the unit complies with relevant FCC regulations regarding electromagnetic interference. The UL listing confirms the communicator’s ability to accurately transmit alarm signals over telephone lines, even under adverse conditions. Regular testing, as outlined in NFPA 72, is crucial to maintain compliance and ensure continued reliable performance. Always consult the latest revision of applicable standards.
Wiring Specifications and Connections
Wiring the Silent Knight 5104B requires careful adherence to specifications outlined in the installation manual (151053-L8). Each of the six supervised zones necessitates dedicated wiring for fire, supervisory, and tamper signals. Typically, a Class B supervised circuit is employed, utilizing normally open (NO) end-of-line resistors.
Power requirements are 12 VDC, supplied by an appropriate UL-listed power supply. Connections for the telephone line – crucial for digital fire reporting – must be made using RJ31X jacks. Proper grounding is essential for reliable operation and to minimize interference.
Wiring distances should comply with NFPA 72 limitations to prevent signal degradation. Consult a Silent Knight distributor or call 800-328-0103 for specific wiring diagrams and guidance. Incorrect wiring can compromise system functionality and potentially lead to false alarms or communication failures. Always verify wiring before powering up the system.
Zone Configuration and Supervision
The Silent Knight 5104B features six independently configurable zones, each capable of monitoring fire, supervisory, or tamper conditions. Proper zone configuration is vital for accurate alarm identification and efficient response. Each zone requires a unique address programmed during system setup.
Supervision is maintained through Class B wiring with end-of-line resistors. A short or open circuit within a zone triggers a supervisory alarm, indicating a wiring fault or device tampering. This constant monitoring ensures the integrity of the detection circuit.
Zones can be programmed for various sensitivity levels and alarm types. Careful consideration should be given to the specific hazards present in each protected area. Detailed programming instructions are found within the installation manual. Correct zone configuration and supervision are critical for reliable fire detection and minimizing false alarms.
Digital Fire Reporting Capabilities

The Silent Knight 5104B excels in digital fire reporting, transmitting detailed alarm information over standard telephone lines. This eliminates the need for costly dedicated communication pathways, significantly reducing installation and maintenance expenses. The system utilizes a sophisticated digital encoding scheme to ensure accurate and reliable data transmission.
Upon alarm activation, the 5104B automatically dials a pre-programmed central station or designated phone number. It then transmits a comprehensive report, including the zone number, alarm type (fire, supervisory, or tamper), and system identification. This detailed information allows for rapid and informed response by emergency personnel.
The digital reporting format minimizes transmission errors and provides enhanced security. The system also supports various reporting protocols, ensuring compatibility with a wide range of central station receivers. Detailed configuration instructions for digital reporting are outlined in the installation manual.
Communication Protocols and Telephone Lines
The Silent Knight 5104B utilizes standard telephone lines for communication, offering a cost-effective and readily available infrastructure. It supports various communication protocols, ensuring compatibility with diverse central station receiving equipment. The system is designed to operate with traditional analog telephone lines, as well as many modern digital lines.
The 5104B employs digital communication techniques to maximize data transmission reliability over these lines. It’s crucial to verify the telephone line’s suitability for fire alarm signaling, ensuring it meets specific requirements for line quality and noise levels. Proper grounding and surge protection are also essential for reliable operation.
Configuration options allow technicians to select the appropriate communication protocol and adjust transmission parameters. The installation manual provides detailed instructions on telephone line testing and troubleshooting. It also outlines specific considerations for different telephone line types and network configurations.
Troubleshooting Common Issues

Addressing issues with the Silent Knight 5104B often begins with verifying power supply and battery integrity. Common problems include “no trouble” conditions, false alarms, and communication failures. A systematic approach, guided by the installation manual, is crucial for efficient diagnosis.
For communication failures, check telephone line connectivity, ensuring proper dialing and signal transmission. False alarms can stem from wiring faults, sensitivity settings, or detector malfunctions – isolate the zone and investigate accordingly. “No trouble” indications may point to a programming error or a communication pathway obstruction.
The manual details specific LED diagnostic codes and troubleshooting flowcharts. Regularly testing the system, including initiating alarm signals and verifying central station reception, helps proactively identify potential issues. Remember to document all troubleshooting steps and resolutions for future reference.
Programming and Configuration Options
The Silent Knight 5104B offers extensive programming capabilities, allowing customization to meet specific fire alarm system requirements. Configuration is typically performed via a keypad interface, accessing various system parameters. Key settings include zone definitions – designating each input for fire, supervisory, or tamper signals – and alarm reporting formats.
Users can adjust sensitivity levels for detectors, minimizing false alarms while ensuring reliable detection. Communication settings, such as telephone number programming and reporting intervals, are also configurable. The system supports various reporting protocols, enabling compatibility with diverse central monitoring stations.
Advanced options include event logging, allowing detailed tracking of system activity, and user access control, restricting programming privileges. Refer to the installation manual for a comprehensive list of programmable parameters and detailed instructions. Proper programming is vital for optimal system performance and compliance.
Installation Guidelines and Requirements
Proper installation of the Silent Knight 5104B is crucial for reliable fire alarm system operation. Mount the communicator in a clean, dry, and accessible location, adhering to all applicable codes and standards. Ensure adequate ventilation to prevent overheating. Wiring must comply with the National Electrical Code (NEC) and local regulations, utilizing appropriate gauge wire and conduit.
A dedicated telephone line is required for communication with the central monitoring station. Verify proper line quality and signal strength. All connections should be secure and properly labeled. Supervised circuit wiring is essential for tamper detection and fault monitoring. The 5104B requires a 12VDC power supply with sufficient capacity to support all connected devices.
Before powering up, thoroughly inspect all wiring and connections. Consult the installation manual for detailed diagrams and specific requirements. Professional installation by a qualified fire alarm technician is highly recommended to ensure compliance and optimal performance.
Maintenance and Testing Procedures
Regular maintenance and testing of the Silent Knight 5104B are vital for ensuring continued reliability. Perform visual inspections quarterly, checking for loose connections, damaged wiring, and signs of corrosion. Test the communicator’s communication link with the central station monthly, verifying successful signal transmission.
Conduct annual battery tests to confirm adequate backup power capacity. Simulate fire alarm activations on each zone to verify proper signal reporting and alarm annunciation. Inspect and clean the communicator’s enclosure to remove dust and debris. Review the event log for any recorded faults or alarms.
Document all maintenance and testing activities in a logbook. Any discrepancies or failures should be promptly addressed by a qualified fire alarm technician. Refer to the installation manual for detailed testing procedures and recommended maintenance schedules. Consistent adherence to these procedures will maximize system uptime and protect lives and property.
Compatibility with Silent Knight Systems
The Silent Knight 5104B fire control communicator is specifically designed for seamless integration with other Silent Knight fire alarm control panels and systems. It functions as a robust communication interface, transmitting alarm signals from compatible panels to a central monitoring station.

This communicator supports standard Silent Knight protocols, ensuring reliable data transmission and minimizing compatibility issues. It’s particularly well-suited for use with Silent Knight addressable and conventional fire alarm systems. The 5104B enhances these systems by providing digital fire reporting over standard telephone lines.
Verify compatibility with your specific Silent Knight panel model by consulting the panel’s documentation or contacting Silent Knight support. Proper integration requires correct wiring and programming, as outlined in the 5104B installation manual. Utilizing compatible components ensures optimal system performance and adherence to safety standards.
Where to Find the 5104B Installation Manual
Accessing the official Silent Knight 5104B Installation Manual is crucial for proper installation, programming, and maintenance of the fire control communicator. Several avenues are available to obtain this vital resource.
Firstly, the manual can often be directly downloaded from the Silent Knight website (www.silentknight.com) within their resources or support section. Search for “5104B manual” or browse their documentation library. Secondly, many Silent Knight distributors maintain online catalogs with downloadable manuals for their products.
The manual is identified as document number 151053-L8. If online access proves difficult, contacting Silent Knight support directly at 800-328-0103 will allow you to request a physical copy or receive guidance on locating the digital version. Always ensure you have the latest revision of the manual to benefit from the most up-to-date information and safety guidelines.
Contacting Silent Knight Support

For dedicated assistance with your Silent Knight 5104B fire control communicator, reaching out to their support team is highly recommended. Silent Knight provides multiple channels for effective communication and problem resolution.
The primary method for direct support is via telephone. You can contact Silent Knight at 800-328-0103 during their business hours. Be prepared to provide your system model number (5104B) and a detailed description of the issue you are experiencing.
Additionally, Silent Knight’s website (www.silentknight.com) offers a comprehensive support section, including FAQs, troubleshooting guides, and contact forms for submitting inquiries. Many distributors also offer local support and can act as a liaison with Silent Knight’s technical experts. When contacting support, having the installation manual (151053-L8) readily available can expedite the process and ensure accurate assistance.