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Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...
A fire alarm control panel Fire alarm speaker and pull station. Fire alarm systems are composed of several distinct parts: Fire alarm control panel (FACP), or fire alarm control unit (FACU): This component, the hub of the system, monitors inputs and system integrity, controls outputs, and transmits information.
Many modern fire alarm pull stations are single-action and only require the user to pull down a handle to sound the alarm. Other fire alarm pull stations are dual-action, and as such require the user to perform a second task before pulling down, such as lifting or pushing in a panel on the station or breaking a glass panel with an attached hammer.
Fire detection and fire suppression systems, such as carbon dioxide, may be installed. A large electrical room may have extensive provisions for grounding (earthing) and bonding enclosures of electrical equipment to prevent stray voltage and danger of electric shock, even during faults in the electrical system.
The term "fire detection and fire alarm systems" is a fairly wide definition, including small systems whose field devices consist only of sounders and manual call points, to complex networked systems with a large number of automatic fire detectors, manual call points and sounders, connected to numerous networked control and indicating panels.
The alarm transmission methods covered under UL 365 can be categorized under standard line security or encrypted line security. The systems are required to operate within the limits of Class 2 remote control and signal circuits as defined by the National Electrical Code, NFPA 70. [15]
Part 14: Guidelines for planning, design, installation, commissioning, use and maintenance (of fire detection and fire alarm systems) 2018-10 No Control panels and power supply EN 54-16 Part 16: Voice alarm control and indicating equipment 2008 Yes Other devices EN 54-17 Part 17: Short circuit isolators 2005 + AC:2007 Yes Other devices EN 54-18
Fire detection – fire alarm systems and brigade call systems; Active fire protection – fire suppression systems; Passive fire protection – fire and smoke barriers, space separation; Smoke control and management; Escape facilities – emergency exits, fire lifts, etc. Building design, layout, and space planning; Fire prevention programs