A fire detection system will have number of devices working together to detect and warn people through visual and audio appliances when smoke, fire, carbon monoxide or other emergencies are present. These fire detection system will be activated automatically from smoke detectors and heat detectors or may also be activated via manual fire alarm activation devices such as manual call points or pull stations. Alarms will be either motorized bells or wall mountable sounders or horns. They can also be speaker strobes which sound an alarm, followed by a voice evacuation message which warns people inside the building not to use the elevators. Fire alarm sounders can be set to certain frequencies and different tones including low, medium and high, depending on the manufacturer of the device. Fire alarm electronic devices are known as horns and can be either continuous or set to different codes. Fire alarm warning devices can also be set to different volume levels.
After the fire protection are established – usually by referencing the minimum levels of protection mandated by the appropriate model building code, insurance agencies, and other authorities – the fire Detection System designer undertakes to detail specific components, arrangements, and interfaces necessary to accomplish these goals. Equipment specifically manufactured for these purposes is selected and standardized installation methods are anticipated during the design.
ISO 7240-14 is the international standard for Design, installation, commissioning and service of fire detection and fire alarm system in and around the building. this standard was published in August 2013; Status, Published; Edition 1; Technical Committee ISO/TC 21/SC 3 Fire detection and Alarm system.
NFPA 72, The National Fire Alarm Code is an established and widely used installation standard from the United States. In Canada, the ULC is the standard for the fire system.
Last version 2019; Status, Published. This code is part of a family standard NFPA