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DENVER FIRE ALARM TESTFIRE ALARM SYSTEMS AND FUNDAMENTALS
NFPA 72
• Numbering System• Does not use the NEC format• Uses the standard NFPA format for numbering
• Advantages and Disadvantages
• Key Chapters for the Test• Chapter 3 Definitions• Chapter 10 Fundamentals• Chapter 12 Circuits and Pathways• Chapter 14 Inspections, Testing and Maintenance• Chapter 17 Initiating Devices• Chapter 18 Notification Appliances• Chapter 23 Protected Premises Fire Alarm Systems
• Chapter 26 Supervising Station Alarm Systems• Chapter 27 Public Emergency Alarm Reporting Systems
• Chapter 29 SFD and MFD Single and Multi Station Alarms
• What is a Fire Alarm System?• Must have all of the following:• FCU or FCP• At least one initiating device• At least one notification device• At least one signal circuit
Fundamentals
• Equipment• Equipment shall be listed for the purpose used• 10.3.1
• Equipment powered from the DC IDC or SLC shall be listed with control• 10.4.1
• Designer Qualifications• Designs shall conform to NFPA 72 and be done by a
qualified person
• Designer Qualifications• A qualified persons varies depending on the jurisdiction. • According to NICET it is• Factory Trained• NICET Certified• Locally Licensed
• Installer Qualifications• Installers shall be qualified or supervised by qualified
persons• Qualified varies by jurisdiction but NICET defines as:• Factory Trained• NICET Certified• Locally Licensed
• Inspection, Testing and Maintenance Qualifications• Inspection and Testing personnel shall be qualified• Qualifications vary by jurisdiction but NICET defines as:• Factory trained• NICET Certified• Locally Licensed• Employee of a NRTL
• Types of Systems• Protected Premises (Local) Fire Alarm Systems• Auxiliary Fire Alarm Systems• Remote Station Fire Alarm Systems• Proprietary Fire Alarm Systems• Central Station Fire Alarm Systems• Emergency Voice/Alarm Communication System
• History of Fire Alarm System Development• The Yell• The Fire Watch• The Municipal System• The Fire Alarm Box• Smell, see and run method
• The Local Fire Alarm• Smell, see and run method evolved slightly
• The Auxiliary Tie In• The don’t need to smell, see and most importantly run method
• The Evolvement• The Local to the Firehouse• The Local to the remote monitor• The Listed Central Station
• Protected Premises Fire Alarm System• Entire fire alarm system operates in the protected premises,
responsive to the operation of a manual fire alarm box, water flow in a sprinkler system or detection of a fire by smoke or heat detection.
• The main purpose of this system is to provide an evac/relocation alarm for the occupants of the building
• Someone must always be present to transmit the alarm to fire authorities. This can be a remote supervising station, a central station, a proprietary supervising station or auxiliary alarm system.
• 3.3.95.4
• Auxiliary Fore Alarm System• An alarm system utilizing a municipal coded fire alarm box
to transmit a fire alarm from a protected property to municipal fire headquarters (Public Emergency Alarm Reporting System)
• Alarms are received on the same municipal equipment and are carried over transmission lines as are connected fire alarm boxes located on streets
• Operation is initiated by the local fire detection and alarm system
• 3.3.23
• Remote Station Fire Alarm System• An alarm system connecting a protected premisis over
leased telephone lines to a remote station, such as a fire station, supervising system or a police station
• Includes separate receiver for individual functions being monitored, such as fire alarm signal or sprinkler water flow alarm
• Requires leased telephone lines into each premise• 3.3.221
• Central Station Fire Alarm System• An alarm system connecting protected premises to a
privately owned central station whose function is monitor the connecting lines constantly and record any indication of fire, supervisory, or trouble signals from the premises.
• Central has to be able to take action such as required• Must have ability to handle all types of signals• 3.3.268.1
• Proprietary Fire Alarm System• An alarm system that serves contiguous or noncontiguous
properties under one ownership from a central supervising station at the protected property
• Similar to a central or remote station but operated by the owner of the protected property
• Requires 24/7 staffing of the central supervising station• 3.3.267.2
• Public Type Systems• Auxiliary Alarm System• Local Energy Type Auxiliary Alarm System• Shunt-type Auxiliary Alarm System
• Type A System• Type B System
• Local Energy Auxiliary Alarm Systems• Employs a locally complete arrangement of parts and power
supplies to automatically activate a master box over circuits that are electrically isolated from the public emergency alarm reporting system circuits
• In other words: reports to the public/ municipal system through a set of independent lines by sending a signal to the master box and then through the public system
• Shunt Type Auxiliary Alarm Systems• Electrically connected to the public alarm system by
extending the wiring of the master box to the protected premises.
• Initiating devices when operated opens the public reporting circuit which is shunted around the trip coil of the master box which energizes the master box without any assistance from a local source power.
• No power supply in the protected premises• Early type of auxiliary system
• Type A Public Systems• Alarm signals are transmitted to a central dispatcher
monitoring station and then retransmitted to appropriate fire houses
• Type B Public Systems• Alarm signals are transmitted directly to a municipal fire
alarm station
• Next Class• Power Supplies• Initiating Devices
Class after next
Notification Appliances
Signaling Circuits
Practice Questions