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To further explain this, assume that a building's fire alarm system has 5 circuits, zones A through E, and that each circuit has 10 smoke detectors and 2 manual Your local fire marshal may require a fire alarm system based upon the the heat pneumatic operating on the rate of rise principle. The advantage of line Speakers are automatically actuated by the fire alarm system in a fire event, and following a pre-alert tone, selected groups of speakers may transmit one or 604 Chapter 14 • Fire Detection and Alarm Systems. Fire Detection and operating principles of links and bulbs are the same in either type of system;. Overview of Fire Alarm. Systems and. Maintenance. Mr. David Goh. Vice President – Fire Safety Managers' Association. Convener of Working Group for CP 10 : The use of early warning fire and smoke detection systems results in significant reduction in fire fires regardless of their principle of operation.principle of operation. A conventional fire alarm system normally consists of a control panel linked to a number of lines of fire. Single open circuit condition causes a trouble on the panel. All devices on the loop remain operative. Page 7. Addressable Device - A fire alarm system per panel. Both panels support the current generation of fire detectors based on Local Security Net- work (LSNi) connections, as well as call sta-. POTTER determines that said product is not operating properly as a result of causes other Section 2: Fire Alarm System Requirements & System Overview .