the objective of this blog series is to discuss some of the major components and functions of a fire alarm system. the purpose of off-premises signaling is to provide dedicated, 24-hour monitoring for a fire alarm and signaling system and to initiate the appropriate response to those signals. the system itself does not include the fire alarm control unit or any of the equipment that is located on the protected premise, instead, it starts at the transmitter and ends at the public communication center.
a supervising station alarm system consists of everything connected to the supervising station, including the protected premises fire alarm control unit and devices. a proprietary supervising station alarm system consists of a supervising station under the same ownership as the protected building that it supervises. unlike central station fire alarm systems, contracts for this service are typically limited to the monitoring and recording of signals from the fire alarm system. i will be updating this series over the next few months to add a deeper dive into different portions of the fire alarm system.
as a member of numerous technical committees for the national fire protection association (nfpa), assisting members and ahjs provides valuable feedback to propose changes for rewritten and clarified code language, which cuts down on misinterpretations. i believe good communications among the stakeholders is one of the most important factors to providing a reliable fire protection system. the new definition for “dedicated function fire alarm system” states: ”a protected premises fire alarm system installed specifically to perform fire safety function(s) where a building fire alarm system is not required.” a definition for “dedicated function fire alarm control unit” was also added: “a protected premises fire alarm control unit which is intended to provide operation of a specifically identified fire safety function, such as sprinkler alarm and supervisory control unit or an elevator recall control and supervisory control unit.” in the protected premises chapter, a new section was added for dedicated function fire alarm systems. the smoke detector is required to preserve the fire alarm signal in case of fire when the control unit is in an area that is not constantly attended. the manual pull station is required to provide a backup means to transmit a fire alarm signal when other automatic initiating devices connected to the system are down for repair or test.
one ahj stated that nfpa 90a, standard for the installation of hvac equipment, states: “in addition to the requirements of 6.4.3, where an approved fire alarm system is installed in a building, the smoke detectors required by the provisions of section 6.4 shall be connected to the fire alarm system in accordance with the requirements of nfpa 72, national fire alarm and signaling code.” his argument is that a fire alarm system was installed, and it was approved for installation; therefore, the duct detectors must be connected to the fire alarm system even if it was only intended to monitor the fire sprinkler system. depending on the ahj, you may have had to connect the duct detectors to the fire alarm panel. remember, the only code requirement in a case such as this is that a fire sprinkler system was required and that system needed to be monitored. we all need to work toward clearer language in the codes. thomas p. hammerberg, set, cfps is an independent fire alarm presenter and consultant in the villages, fla. he can be reached at tomhammerberg@gmail.com.
.105.4 protected premises (local) fire alarm system. a protected premises fire alarm system is any fire alarm system located at the the systems covered in chapter 23 shall be for the protection of life or property, or both, by indicating the existence of heat, fire, smoke, or other the objective of this blog series is to discuss some of the major components and functions of a fire alarm system., fire alarm system, fire alarm system, protected premises fire alarm system is most basic, proprietary alarm system, nfpa 72.
commonly referred to as a local fire alarm system, a protected premises system sounds an alarm when an initiating device is activated such as water flowing in a sprinkler system or the detection of smoke or heat. in addition to the core focus on fire alarm systems, the code includes requirements for protected premises fire alarm and signaling systems (sig-pro) protected premises. system — alarm system that alerts and notifies only occupants on the premises of the existence of a fire so. the new definition for “dedicated function fire alarm system” states: ”a protected premises fire alarm system installed specifically to perform fire safety, supervising station alarm system, photoelectric smoke detectors are, automatic alarm system, the value of automatic sprinklers in providing safety to the occupants of a structure include, water flow alarm, firelite, gentex smoke detector.
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