Section 16721 - Fire Alarm System (medium and large systems)

SECTION 28 31 00 – FIRE ALARM SYSTEM
PART 1: GENERAL
1.01
1.02
DESCRIPTION:
A.
General provisions and other fire detection and alarm systems are specified in other Sections of Division 28.
B.
This Section covers the fire alarm system.
C.
This Section includes fire alarm connections to alarm and supervisory devices furnished with the fire
extinguishing systems which are specified in Division 21.
D.
Commissioning is specified in Section 23 30 90, Fire Detection and Alarm Commissioning.
QUALITY ASSURANCE:
A.
Conform to the following:
1.
2.
3.
1.03
NFPA 70-2005.
NFPA 72-2007.
International Building Code.
B.
Preparation of submittals, final panel connections, system programming, testing, certification, and operator
training shall be performed by an authorized, factory-trained distributor or direct factory office of the equipment
manufacturer.
C.
New fire alarm control panels shall be UL listed under category UUKL as smoke control equipment.
D.
Fire alarm equipment and devices shall be furnished through a service provider that is a factory-authorized
distributor or direct factory office of the equipment manufacturer. This service provider shall be located within
250 miles of the project site and shall be capable of providing on-site response to emergency calls within 8
hours. The service provider shall perform all functions relating to submittal preparation, system programming,
final wiring connections at control panels, system testing and certification, and on-site operator training. The
service provider shall employ at least 2 individuals who have been factory certified to program and maintain
the fire alarm equipment and who hold current Level III or IV certifications in the Fire Alarm subfield by the
National Institute for Certification in Engineering Technologies (NICET).
SUBMITTALS:
A.
Submittals shall conform to NFPA 72-2007 and the requirements of Section 28 30 10, Fire Detection and
Alarm General.
B.
Submittals shall include a bill of materials, product data sheets, installation drawings, and calculations.
1.
2.
3.
ETB #0914
Drawings shall be prepared using AutoCAD and shall show each new floor in plan view to a scale
not smaller than 1/8" = 1'-0". In plan views indicate the location of devices, approximate conductor
routing between devices, the address of signaling line circuit (SLC) devices, and the intensity of
strobe lights. Provide hook-up details for fire alarm initiating and notification devices and indicate the
wiring color code to be used. Include a system operating sequence in the form of a narrative or an
I/O schedule. Provide control panel diagrams showing the arrangement of modular components and
terminal connections for external wiring.
Product data sheets shall be submitted for hardware, devices, and wire and shall be marked to
indicate the model numbers and applicable options. Submittals shall include a complete addressable
point list with corresponding messages. For each SLC, indicate the initial number of points
connected, the capacity of the circuit, and the spare capacity.
Provide calculations for the voltage drop on notification appliance circuits, amplifier sizes, and
battery sizes. Voltage drop calculations shall use as the starting voltage the battery voltage available
after the batteries have operated the system in the quiescent and alarm modes for the specified
duration of time.
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SECTION 28 31 00 – FIRE ALARM SYSTEM
1.04
SYSTEM FEATURES AND CONFIGURATION:
A.
The fire alarm system shall employ analog addressable initiating devices and multiplex communication
techniques. The point address of each device shall be set either at the device or at the control panel and
shall be independent of the relative location of the device on the signaling line circuit. The system shall
operate at 24 V DC when provided with 120 V AC primary power.
PART 2: PRODUCTS
2.01
2.02
2.03
FIRE ALARM CONTROL PANELS:
A.
New control panels shall be listed in accordance with UL 864-2003. Panels shall be microprocessor-based
and shall include plug-in modular components installed in a surface-mounted steel cabinet with hinged door
with cylinder lock.
B.
Power supplies shall have sufficient capacity to operate audible and visible notification appliances
simultaneously for the specified duration of time.
C.
Provide fused circuits for regulated 24 V DC auxiliary power to electromagnetic door holders and heavy duty
switching relays supervised.
D.
Provide signaling line and notification appliance circuits arranged so that the connected load on any circuit
does not exceed 75% of rated circuit capacity.
E.
Circuit conductors entering or leaving the control panel shall be connected to screw-type terminals with each
terminal marked for identification.
F.
Amplifier sizing shall be based on operating speakers throughout the building. The connected load on any
amplifier shall not exceed 75% of the amplifier rated power output capacity. Upon failure of a primary
amplifier, a standby amplifier shall automatically assume the load and a trouble condition shall be annunciated
on the system.
G.
The control panel shall include an integral digit communicator (DACT) to transmit system activity to a remote
monitoring station.
STORAGE BATTERIES:
A.
Provide additional standby battery capacity. Storage batteries shall be sealed, lead-calcium or lead-acid type
requiring no additional water. Batteries shall be located in the bottom of the control panel or in a separate
cabinet.
B.
The battery charger shall be completely automatic, with high/low charging rate, capable of restoring the
batteries from full discharge to full charge within 48 hours. The charger shall be located within the control
panel or battery cabinet.
MANUAL FIRE ALARM PULL STATIONS:
A.
2.04
Manual fire alarm pull stations shall conform to the applicable requirements of UL 38-2008. Match existing
pull stations. Stations shall be addressable type installed on semiflush-mounted outlet boxes. The housing
shall be finished in red, with raised letter operating instructions of contrasting color. Stations requiring the
breaking of glass or plastic panels for operation are not acceptable. The use of a key or wrench shall be
required to reset the station. Stations shall have a separate screw terminal for each conductor. Surfacemounted boxes shall be painted the same color as the manual stations.
AUTOMATIC FIRE DETECTING DEVICES:
A.
Bases for automatic fire detection devices shall have screw terminals for wiring connections.
B.
Heat Detectors:
1.
ETB #0914
Heat detectors shall be designed for detection of fire by fixed temperature principle.
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SECTION 28 31 00 – FIRE ALARM SYSTEM
C.
Smoke Detectors:
1.
2.
3.
2.05
2.06
Smoke detectors include area type and duct-mounted devices. Area and duct-mounted detectors
shall be point-addressable, dynamically supervised (analog) type listed in accordance with UL 2682009. Smoke detectors shall operate on the photoelectric principle. Detectors shall contain a visible
LED which shall be illuminated when the unit is in alarm condition. Detectors shall be plug-in type in
which the detector base contains terminals for making wiring connections. Where indicated on the
Drawings, provide remote LED indicators. Remote alarm LEDs shall have a flush-mounted
faceplates with white finish and shall be identified with a permanent label indicating the type of
device, the location, and the address.
Photoelectric smoke detectors shall operate on a light scattering principle using an LED light source.
Failure of the LED shall not cause an alarm condition. Detectors shall have an obscuration rating
within the limits prescribed by UL 268-2009.
Duct smoke detectors shall include an enclosure, mounting hardware, and perforated sampling
tubes. The intake tube shall extend through the far side of the duct and shall be plugged with a
removable rubber stopper or cap. Detectors shall be listed for airstream velocities up to 4000 fpm.
Provide a remote LED with faceplate and identification label for each duct smoke detector.
SIGNALING LINE CIRCUIT INTERFACE DEVICES:
A.
The system shall include addressable monitor and control modules to perform control functions and supervise
the open alarm contacts of nonaddressable initiating devices. Unless otherwise indicated on the Drawings,
provide an individual monitor module for each nonaddressable initiating device. Control modules shall be
configured as Form C dry contact relays. Each module shall mount in a standard outlet box and shall include
a status LED, a terminal strip for external wiring connections, and a faceplate for an identification label. Status
LEDs shall be visible without removing faceplates. The label shall indicate the module function and address.
B.
Where the rated current capacity of the control module is insufficient to connect directly to the controlled
equipment, provide an intermediate 24 V DC plug-in control relay with dustproof cover, terminal strip for coil
and contact connections, and painted steel enclosure designed for wall mounting. The enclosure shall be
identified with a permanent label. Operating power for the relay coil shall be supervised by the SLC.
C.
Line fault isolator modules shall detect a fault on the signaling line circuit and interrupt power to devices
installed beyond the isolator. When the fault has cleared, the isolator shall reset automatically. The
maximum number of devices isolated by a single module shall be 25. Isolator modules shall be installed in a
visible location. Faceplate and labeling requirements shall be similar to other SLC interface devices.
NOTIFICATION APPLIANCES:
A.
Fire Alarm Speakers:
1.
B.
Visible Notification Appliances:
1.
C.
Visible notification appliances shall be strobe lights conforming to UL 1971-2002. Strobes shall have
a Xenon flash tube and clear optic lens and identification "FIRE" in a contrasting color. Strobe
intensity shall be field selectable with a range of 15 candela to 95 candela. Strobes shall flash at
approximately 1 flash per s. Strobes shall be semiflush-mounted on the walls and shall include a
faceplate with enamel finish. Finish shall be red in Mechanical and Electrical Rooms and white
elsewhere. Strobe lights on a circuit shall flash at a synchronized rate.
Combination Audible/Visible Notification Appliances:
1.
ETB #0914
Speakers shall be flush-mounted on the wall. Speakers shall have a frequency response of 400 Hz
to 4000 Hz and matching transformer with multiple power taps in the range of 0.25 W to 2 W.
Speakers shall produce a minimum sound rating of 84 dBA at 10' at 1 W. Wall-mounted speakers
shall include a square perforated grille with enamel finish. Finish shall be red in Mechanical and
Electrical Rooms and white elsewhere.
Combination audible/visible notification appliances shall provide the same performance
characteristics as specified herein for individual units, except that they shall mount in a single
factory-assembled enclosure.
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SECTION 28 31 00 – FIRE ALARM SYSTEM
2.07
WIRE AND CABLE:
A.
Wiring:
1.
2.
3.
4.
5.
2.08
Wiring for 120 V AC power shall be #12 AWG minimum.
Wiring for visible notification appliance circuits shall be Type FPL/FPLR, solid copper, #14 AWG
minimum.
Wiring for signaling line circuits shall be Type FPL/FPLR, solid copper, #16 AWG minimum. The
capacitance shall not exceed 35 pf/ft between conductors.
Wiring for speaker circuits shall be Type FPL/FPLR, solid copper, twisted pair, minimum #18 AWG.
Wiring shall be shielded if recommended by the fire alarm manufacturer.
Wiring shall conform to the published performance criteria of the fire alarm manufacturer.
PERIPHERAL EQUIPMENT AND ACCESSORIES:
A.
Electromagnetic Door Holders:
1.
B.
Auxiliary Power Supplies:
1.
C.
Two-piece electromagnet type attached to the walls and door. Door holders shall operate on 24 V
DC power from the fire alarm control panel. The door component shall include an adjustable contact
angle and a nylon pivot bearing. Magnets shall have a holding force of approximately 25 lbf.
Housings shall be brushed aluminum.
Auxiliary power supplies shall provide power for visible notification appliances and other 24 V DC
power requirements. Power supplies shall be UL listed, packaged units with surface-mounted steel
enclosures, multiple fused notification appliance circuits, transformers, rectifiers, power indicator
LED lights, automatic battery chargers, and standby batteries with 24-hour capacity. Loss of power,
low battery voltage, or a supervision fault on a notification appliance circuit shall be annunciated
through dry contacts. Input power shall be 120 V AC.
Fire Alarm Terminal Cabinets:
1.
UL listed, surface-mounted steel enclosure with hinged door, key lock, 0.5" and 0.75" conduit
knockouts, red finish, and white lettering "FIRE ALARM TERMINAL CABINET". The cabinet shall
contain an 18 point (minimum) high barrier terminal strip and labeling ID card.
a.
D.
Surge protective devices: surge protective devices shall be hard wired; shall utilize nondegrading,
bidirectional, silicon avalanche diode technology; and shall have a response time of less than 5 ns. Proper
operation shall be indicated by an integral LED.
1.
AC Voltage Power Surge Protective Devices:
a.
b.
c.
d.
e.
2.
c.
3.
Performance in accordance with IEEE C62.41.1-2002 (R2008) and IEEE C62.41.2-2002.
Listed in accordance with UL 1449-2006.
Configured for 120 V, 1-phase, 2-wire with ground (minimum 15 A).
Maximum clamping voltage shall not exceed 350 V.
Installed in a UL listed metal enclosure close to the electrical panelboard.
Communication or Signal Conductor Surge Protective Devices:
a.
b.
ETB #0914
Manufacturer: Space Age Electronics TC1.
Listed in accordance with UL 497B-2004.
Maximum clamping voltage shall not exceed the normal applied voltage by more than
150%.
Installed in a UL listed metal enclosure where conductors leave the building.
Manufacturer: Edco, Northern Technologies, or Transtector.
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SECTION 28 31 00 – FIRE ALARM SYSTEM
E.
Device Markers:
1.
Fire alarm initiating devices and SLC interface devices shall be identified with a printed adhesive
label showing the device address. Text shall be black on a clear background and shall be minimum
0.75" high.
a.
F.
Manufacturer: Brother 1700 series or similar.
Keys and Locks:
1.
Keys and locks for control panels, power supplies, and terminal cabinets shall be identical. Match
existing locks.
PART 3 - EXECUTION
3.01
GENERAL:
A.
Primary Power Circuits:
1.
B.
Wiring:
1.
2.
3.
4.
C.
2.
On each branch circuit supplying 120 V power to fire alarm equipment.
On each fire alarm communication or signal conductor which leaves the building.
Weatherproof Devices:
1.
ETB #0914
Electrical metallic tubing (EMT) shall be as specified in Section 26 11 00, Raceways. Minimum
raceway size shall be 0.75".
Flexible EMT attached to fire sprinkler equipment shall be liquidtight with a neoprene jacket. Flexible
EMT shall not exceed 5 feet in lengths.
Install transient voltage surge suppression devices at the following locations:
1.
2.
F.
Control panels and auxiliary power supplies shall be mounted so that no part of the enclosing
cabinet is less than 12" nor more than 78" above the finished floor. Provide an engraved label on the
door to indicate the panel and circuit number of the 120 V power source.
Conduit and Boxes:
1.
E.
Line voltage and power-limited circuits shall not be run in the same conduit.
Conductors used for the same functions shall be similarly color-coded. Wiring code color shall
remain uniform throughout the circuit.
Wiring for the fire alarm system shall not be installed in conduits, junction boxes, or outlet boxes with
conductors of any other building system. Fire alarm junction boxes and outlet boxes shall be painted
red prior to pulling the wire. Circuit conductors entering or leaving any mounting box, outlet box
enclosure or cabinet shall be connected to screw terminals with each terminal marked in accordance
with the wiring diagram. Connections and splices shall be made using screw terminal blocks. The
use of wire nut type connectors are prohibited in the system. Wiring within control panels shall be
laced with cable ties. Final wiring connections to the control panel and application of operating power
shall be made by the manufacturer's authorized representative.
Wiring in areas without suspended ceilings, within walls, or above non-accessible suspended
ceilings may be installed without raceway. Wire and cable shall be supported form the building
structure at intervals not exceeding 5 feet.
Control Panels and Auxiliary Power Supplies:
1.
D.
Primary 120 V AC power to fire alarm equipment shall be dedicated branch circuits.
Where exposed to the weather or high humidity, gasketed back boxes and enclosures shall be
provided.
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SECTION 28 31 00 – FIRE ALARM SYSTEM
3.02
MANUAL FIRE ALARM PULL STATIONS:
A.
3.03
Mount manual pull stations with the centerline 4' above finished floor.
AUTOMATIC FIRE DETECTING DEVICES:
A.
Area Smoke Detectors:
1.
B.
Smoke detectors on suspended acoustical tile ceilings shall be located in the center of the tile and shall be
secured with a tile bridge.
C.
Duct Smoke Detectors:
1.
2.
D.
Heat detectors in elevator equipment rooms shall be located within 24" of each sprinkler head in
accordance with NFPA 72-2007.
NOTIFICATION APPLIANCES:
A.
3.05
Remote status LEDs shall be mounted approximately 5' above the floor in an accessible location.
Seal the sheet metal penetrations caused by sample tubes.
Heat Detectors:
1.
3.04
Detectors shall be installed in accordance with NFPA 72-2007. Detectors shall be at least 3' from
supply or return diffusers. During construction, smoke detectors shall be provided with protective
covers to prevent the entry of dust and debris. Covers shall be removed prior to system acceptance
testing.
Visible notification appliances mounted on walls shall be mounted with the bottom of the strobe lens 6'-8"
above the finished floor. For combination audible/visible appliances, mounting height shall be governed by the
strobe light.
SIGNALING LINE CIRCUIT INTERFACE DEVICES:
A.
Control modules shall be installed within 36" of the device with which it is associated.
END OF SECTION 28 31 00
ETB #0914
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