Bosch B926F - User Manual

The B926F Fire Keypad is a fully supervised SDI2 device designed for fire applications within an intrusion alarm system. It offers a comprehensive set of features for monitoring, controlling, and indicating fire-related events.

Function Description

The keypad serves as a primary interface for users to interact with the security system, particularly concerning fire alarms and related conditions. It provides visual and audible alerts for various events, including fire alarms, fire troubles, and fire supervisory events. The keypad is equipped with dedicated fire function keys for immediate response and control.

Usage Features

Display and Interface

The B926F features a 2-line LCD display capable of showing up to 32 characters per line. This display presents system messages, user names, and area names, providing clear and concise information about the security system's status. When multiple events occur, the keypad prioritizes and displays them in order of importance.

The user interface is menu-driven, simplifying navigation and access to common commands. Dedicated function buttons are provided for frequently used actions, including status indication, making the system intuitive to operate.

Keys

The keypad includes 10 number keys and 5 navigation keys for general system interaction. When a key is pressed, the keypad backlighting activates, and a short beep confirms the input.

Crucially, the B926F incorporates four dedicated Fire function keys:

ACK (Acknowledge): Used to acknowledge system alarms or trouble conditions, indicating that the user is aware of the event.
SILENCE: Allows users to silence fire alarms or troubles, which can be essential during an emergency while maintaining system awareness.
RESET: Facilitates the resetting of devices such as smoke detectors and clears restored points, preparing the system for normal operation after an event.
DRILL: When pressed and held, this key initiates a fire drill, allowing for testing and training without triggering an actual emergency response.

Audible Tones

A built-in sounder produces distinct warning tones for different events. These tones are differentiated to allow users to recognize the type of event (e.g., fire alarm, fire trouble, or fire supervisory event) solely by its associated sound, enhancing situational awareness.

Status Indicators

The keypad features several visual indicators that provide a quick reference for critical system statuses:

An indicator light illuminates when the system is ready to be armed (turned on).
Another indicator light illuminates when the system is armed (turned on).
A "GAS" indicator lights up when dangerous gases, such as carbon monoxide (as per NFPA 720), are detected.
An indicator light confirms that the system has power.

In addition to these general status indicators, the keypad includes specific Fire status indicators:

An indicator lights up when a fire alarm condition exists, providing an immediate visual alert of a fire.
An indicator lights up when a user has silenced a fire alarm condition, confirming the action.
An indicator lights up when a supervisory point is not normal, drawing attention to potential issues.
An indicator lights up when there is a trouble condition, signaling a fault or malfunction within the fire system.

User Adjustments

Users can adjust the backlighting of the keys to suit their preferences and ambient lighting conditions, improving visibility and usability.

Maintenance Features

Installation

The B926F Fire Keypad is designed for simple installation. It features a self-locking base and a chassis design that streamlines the mounting process. An integrated bubble level assists installers in ensuring a level and professional installation. Custom gap-free, lift-gate style terminal blocks further simplify wiring, contributing to a more efficient and secure setup.

Power and Data

The keypad receives both power and data requirements from a compatible control panel via a four-wire connection. This integrated approach simplifies wiring and ensures reliable communication with the main system.

Enclosure

The sliding self-locking enclosure not only aids in installation but also contributes to the keypad's overall durability and aesthetic. Its design, combined with the integrated bubble level and custom terminal blocks, reflects a focus on ease of maintenance and long-term reliability.

The B926F Fire Keypad is a robust and user-friendly component of an intrusion alarm system, specifically tailored to provide clear, immediate, and actionable information regarding fire safety.