USACE / NAVFAC / AFCESA / NASA UFGS-28 31 73.00 20 (February 2003)
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Preparing Activity: NAVFAC Replacing without change
UFGS-13851N (February 2003)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 28 31 73.00 20
EXTERIOR FIRE ALARM SYSTEM, CLOSED CIRCUIT TELEGRAPHIC TYPE
04/06
NOTE: This guide specification covers the requirements for exterior fire alarm
reporting and receiving system of the closed circuit telegraphic type.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
NOTE: System requirements must conform to Unified Facilities Criteria (UFC)
3-600-01 Design: Fire Protection Engineering for Facilities.
NOTE: The following information shall be shown on the project drawings:
1. Location of Decoding/receiving console.
2. Locations where recording equipment should be installed.
3. Dimensions of cabinets and whether flush or surface mounted.
4. Location of the panel, bells, and other equipment.
5. Location of the alarm gongs and bells.
6. Location of all boxes.
7. All portions of the system that will be underground and any portion that
will be installed in an outside overhead system.
8. Cables that are to be installed in the duct-and-manhole system, the design
of the system, the location of the cables, and the number of conductors in each
cable.
9. Cables that are to be installed in outside overhead systems, the design
of the system, the location of the cables, and the number of conductors in each
cable.
10. Cables that are to be buried directly in earth, their location, where cables
pass under roadways or paved areas, and the ducts or conduits used, and the
number and AWG size of conductors in each cable.
11. Locations of the branch or "Y" connections and the necessary related details.
12. Ground connections that should be welded or brazed, if any.
13. Lightning arrester locations and detail arrangement.
14. System timing.
15. Code Numbers of Fire Alarm Boxes: Coding shall be an integrated four-digit
code. Code numbers should not contain any digit larger than 6, shall not have
succeeding digits of the number "1" or "0." (Example: 1-1-3-4.) A table should
indicate location of all boxes with respective code numbers.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[ASTM INTERNATIONAL (ASTM)ASTM A 475(2003) Standard Specification for Zinc-Coated Steel Wire Strand][FM GLOBAL (FM)FM P7825(2005) Approval Guide][INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)IEEE C62.41.1(2002) IEEE Guide on the Surges Environment in Low-Voltage (1000 V and Less) AC Power CircuitsIEEE C62.41.2(2002) IEEE Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and Less) AC Power Circuits][INTERNATIONAL MUNICIPAL SIGNAL ASSOCIATION (IMSA)IMSA 32(1997) Copper-Covered Steel Messenger Strand, 30 Percent or 40 Percent Conductivity][NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)NEMA C80.1(2005) Standard for Electrical Rigid Steel Conduit (ERSC)NEMA C80.3(2005) Standard for Electrical Metallic Tubing (EMT)NEMA WC 3(1992; Rev 1 1994) Rubber-Insulated Wire and Cable for the Transmission and Distribution of Electrical EnergyNEMA WC 70(1999; Errata 2001) Standard for Non-Shielded Power Cable 2000 V or Less for the Distribution of Electrical EnergyNEMA WC 71(1999) Standard for Nonshielded Cables Rated 2001-5000 Volts for use in the Distribution of Electric Energy][NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)NFPA 1221(2006; Errata 2006) Installation, Maintenance and Use of Emergency Services Communications SystemsNFPA 70(2007; AMD 1 2008) National Electrical Code - 2008 EditionNFPA 72(2006) National Fire Alarm Code][UNDERWRITERS LABORATORIES (UL)UL 1242(2006; Rev thru Jul 2007) Standard for Electrical Intermediate Metal Conduit -- SteelUL 38(2008; Rev thru Dec 2008) Standard for Signaling Boxes for Fire Alarm SystemsUL 467(2007) Standard for Grounding and Bonding EquipmentUL 514A(2004; Rev thru Aug 2007) Standard for Metallic Outlet BoxesUL 514B(2004; Rev thru Aug 2007) Standard for Conduit, Tubing and Cable FittingsUL 83(20086) Standard for Thermoplastic-Insulated Wires and CablesUL 864(2003; Rev thru May 2007) Control Units and Accessories for Fire Alarm SystemsUL Fire Prot Dir(2008) Fire Protection Equipment Directory]1.2 RELATED REQUIREMENTS
[Section 26 00 00.00 20 BASIC ELECTRICAL MATERIALS AND METHODS] [Sections 33 71 01 OVERHEAD TRANSMISSION AND
DISTRIBUTION; 33 71 02.00 20 UNDERGROUND UNDERGROUND TRANSMISSION AND DISTRIBUTION; and 26 20 00 INTERIOR DISTRIBUTION
SYSTEM] [applies] [apply] to this section, with the additions and modifications specified herein.
1.3 DEFINITIONS
1.3.1 Installer
The installer of the exterior fire alarm system; either the Contractor or subcontractor proposed by the Contractor
to perform the work and with whom the Contractor has a firm contractual agreement.
1.4 SYSTEM DESCRIPTION
NOTE: The manufacturer and type of station fire alarm system should be indicated.
NOTE: Design and specify emergency lighting system where required.
Equipment, materials, installation, workmanship, fabrication, assembly, erection, examination, inspection, and
testing shall be in accordance with [NFPA 72] [and] [NFPA 1221], except as modified herein. Except as modified
herein, the exterior fire alarm reporting and receiving system shall comply with [NFPA 72 Style B for initiating
circuits, Style 2 for signaling circuit] [and] [NFPA 1221 for a [Type A] [Type B] system]. Design the system
to operate on direct current supplied from a rectifier and storage batteries. The exterior fire alarm reporting
and receiving system shall include the following features:
a. A complete, electrically supervised, normally-closed series, coded, positive noninterfering
type of circuit.
b. Succession features, whereby alarms from coded boxes [and transmitters] are transmitted
over box circuits to [the central fire station] [fire alarm headquarters].
(1) Alarms that are [manually][automatically] retransmitted to each branch fire station and
to recording and sounding devices in the system.
(2) Regardless of location, the first coded box operated shall transmit four complete rounds
of code without interference from any other box.
(3) Other coded boxes that may have been operated during this period and that shall then transmit
one at a time as the circuit becomes available until all boxes in an alarm condition have completed
four rounds of code.
c. [_____] box circuits terminating in box circuit panels and alarm panels arranged to automatically
sound and record alarms from each box circuit.
The central [fire station] [fire alarm headquarters] watch position shall include [a desk and table,] receiving
console with all associated switches, printer, coupling units, alarm gongs, and other equipment.
1.4.1 Design Requirements
1.4.1.1 Supervisory and Alarm Power Requirements
Submit calculations substantiating battery capacity. Include ampere-hour requirements for each system component
and each panel component with the calculations. Include battery recharging period with the calculations.
1.5 SUBMITTALS
NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] The following shall
be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
The fire protection engineer, [_____] Division, Naval Facilities Engineering Command will review and approve
all submittals in this section requiring Government approval.
NOTE: For projects administered by Pacific Division, NAVFACENGCOM, use the
submittal paragraph below in lieu of the above paragraph. Delete the "G" after
each submittal item, except under "SD-08 Statement."
The Pacific Division, Naval Facilities Engineer delegates the authority for review and approval of all submittals
required by this section to the U.S. Registered Fire Protection Engineer employed in the Quality Control (QC)
Organization, specified under Section 01 45 02 NAVFAC QUALITY CONTROL. Submit to the Pacific Division, Naval
Facilities Engineering Command, Fire Protection Engineer two sets of all approved submittals and drawings immediately
after approval but no later than 15 working days prior to final inspection.
SD-02 Shop Drawings
[Fire station[; G][; G, [_____]]]
[Fire alarm headquarters[; G][; G, [_____]]]
[Exterior fire alarm reporting and receiving system[; G][; G, [_____]]]
Submit detail plan showing the location of fire alarm equipment and devices with complete
point to point wiring diagrams. Wiring diagrams shall show points of connection and terminals
to be used, and interior wiring diagrams of each component. Clearly and completely indicate
the function of the control panel and devices connected thereto. Drawings should be [1189 by
841 mm] [30 by 42 inches] [_____].
SD-03 Product Data
NOTE: Delete equipment which is not applicable. Letter-designate, in alphabetical
order, items required.
Alarm receiving and decoding console[; G][; G, [_____]]
Variable code transmitter[; G][; G, [_____]]
Printers[; G][; G, [_____]]
Sounding Devices[; G][; G, [_____]]
Rectifier/Charger[; G][; G, [_____]]
Batteries[; G][; G, [_____]]
Audible alarm[; G][; G, [_____]]
Testing instruments[; G][; G, [_____]]
Fire alarm boxes[; G][; G, [_____]]
Pedestal[; G][; G, [_____]]
Circuit protection devices[; G][; G, [_____]]
Tie-line repeater[; G][; G, [_____]]
Wires and cables[; G][; G, [_____]]
SD-05 Design Data
Supervisory and alarm power requirements[; G][; G, [_____]]
SD-06 Test Reports
Ground resistance tests[; G][; G, [_____]]
Dielectric strength and insulation resistance tests[; G][; G, [_____]]
Power supply tests[; G][; G, [_____]]
Supervisory features and trouble alarm circuit test[; G][; G, [_____]]
Box and transmitter tests[; G][; G, [_____]]
Signal transmission and recording tests[; G][; G, [_____]]
Trouble line operation tests[; G][; G, [_____]]
Final performance and acceptance tests[; G][; G, [_____]]
After successful completion of the final acceptance tests, submit test results in booklet
form showing field tests performed were in compliance with the specified performance criteria.
In each test report, indicate the final position of controls.
SD-07 Certificates
Parts reliability[; G][; G, [_____]]
Installer qualifications[; G][; G, [_____]]
Test procedures[; G][; G, [_____]]
Installation certificate[; G][; G, [_____]]
Installation personnel[; G][; G, [_____]]
Current UL listings or FM approvals[; G][; G, [_____]]
SD-10 Operation and Maintenance Data
Alarm receiving and decoding console, Data Package 5[; G][; G, [_____]]
[Auxiliary transmitter, Data Package 5[; G][; G, [_____]]]
Rectifier/Charger, Data Package 5[; G][; G, [_____]]
Fire alarm boxes, Data Package 5[; G][; G, [_____]]
Variable code transmitter, Data Package 5[; G][; G, [_____]]
Submit in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA.
SD-11 Closeout Submittals
Record wiring diagrams[; G][; G, [_____]]
1.6 QUALITY ASSURANCE
1.6.1 Qualifications
1.6.1.1 Installer Qualifications
Prior to installation, submit evidence including system type and design showing that the installer has successfully
installed at least two exterior fire reporting and receiving alarm systems conforming to the requirements of
the NFPA and of the same type and design specified herein. Include the names and locations of the installations
and written certification from the users that the systems have performed satisfactorily for a period of not less
than 18 months. Ensure the installer is UL certified for the installation and testing of Fire Alarm Systems.
Provide proof of this listing. A list of installer's personnel shall be provided as part of the submittal package.
1.6.1.2 Installation Personnel
Submit names of personnel who will supervise installation and testing of the system, and who will furnish instruction
to Government personnel, along with the manufacturer's certification of the qualifications of the named individuals.
1.6.1.3 Fire Alarm System Technician or Engineer
Make installation, adjustments, and tests under the supervision of a technician or engineer retained by the Contractor
who is qualified with at least 2 years' experience in the installation and operation of exterior fire alarm systems
of the type specified.
NOTE: For projects administered by Pacific Division, NAVFACENGCOM, include
the following paragraph requiring the minimum qualification of a NICET Level-III
technician for preparation of all fire protection system drawings. Delete for
projects administered by Northern Division, NAVFACENGCOM. For projects administered
by other EFDs, consult with the EFD's Fire Protection Engineer for further guidance
before using the paragraph.
a. Qualification of technician:
Installation drawings, shop drawings and as-built drawings shall be prepared by, or under the supervision of,
a qualified technician. Qualified technician shall be an individual who is experienced with the types of works
specified herein, and is certified by the National Institute for Certification in Engineering Technologies (NICET)
as an engineering technician with minimum Level-III certification in fire alarm system program. Contractor shall
submit data showing the names and certification of the technician at or prior to submittal of drawings.
1.6.2 Modification of References
In the NFPA publications referred to herein, the advisory provisions shall be considered to be mandatory, as
though the word "shall" had been substituted for "should" wherever it appears; reference to the "authority having
jurisdiction" shall be interpreted to mean the Engineering Field Division Fire Protection Engineer.
1.6.3 Regulatory Requirements
Materials and equipment for fire alarm service shall be listed by UL Fire Prot Dir or approved by FM P7825.
Provide current materials and equipment of one manufacturer regularly engaged in production of such equipment,
and provide items that have performed satisfactorily for at least 2 years prior to bid opening.
1.6.3.1 Installation Certificate
Upon completion of construction, submit an installation certificate issued by a service company listed in UL Fire Prot Dir
, under "Protection Signaling Services - Local, Auxiliary, Remote Station Proprietary."
1.6.3.2 UL Listings/FM Approvals
Submit copies of current UL listings or FM approvals for the system in configurations offered, with copies of
the actual UL or FM test results.
1.6.4 Parts Reliability
Certify that materials and equipment furnished are identical to items that have been in satisfactory use for
at least two years prior to bid opening.
1.6.5 Test Procedures
Submit detailed test procedures for the fire alarm system 60 [_____] calendar days prior to performing system
tests.
1.7 DELIVERY, STORAGE AND HANDLING
Store and protect equipment from the weather, humidity and temperature variation, dirt and dust, and other contaminants.
1.8 [EXISTING CONDITIONS
Existing system was manufactured by [_____], and new equipment shall be compatible with and not reduce existing
system operations and reliability.]
1.9 MAINTENANCE
1.9.1 Special Tools
Furnish a suitable testing instruments, metal tool box and special tools required for the maintenance of the
equipment to the Contracting Officer.
1.9.2 Spare Parts
NOTE: Delete equipment which is not applicable. Letter-designate, in alphabetical
order, items required.
a. Three sets of fuses of each type and size;
b. Five spare lamps of each type;
c. Two fire alarm box mechanisms;
d. Two complete printed circuit modules for each recording device console control unit;
e. One suitable metal storage cabinet unless the fire alarm control console is suitable;
f. Five boxes of continuous feed printout paper;
g. Two ink ribbons or cartridges for the printer; and
h. One rectifier/charger at each location indicated.
1.9.3 Record Wiring Diagrams
Submit diagrams prior to final testing of the system.
PART 2 PRODUCTS
2.1 ALARM RECEIVING AND DECODING CONSOLE
NOTE: Wherever there are five or more box circuits, a reserve recorder, or
recorders as necessary, shall be provided at the alarm receiving center. One
or more recorders (depending upon number of box circuits and recorder capacity)
shall be provided in each fire station whenever signals are to be transmitted
to fire stations either automatically or manually. Provide illumination of
console where lighting is inadequate.
Provide console in the main fire alarm watch office that conforms with the applicable requirements of UL 864
and includes the following features:
a. Completely assembled, wired, and tested at the factory, and delivered ready for installation
and operation.
b. Performs the receipt, processing, and display of alarms transmitted by the transmitters
specified herein.
c. A complete receiving system consisting of a decoder, audio devices, visual display, digital
clock, printer, primary and emergency power supplies, power supply monitors, memory device,
and necessary interconnecting cables.
d. Cabinet storage space of at least three shelves unless a separate metal storage cabinet
with door, tumbler-type lock, and two keys are provided for storage of repair parts.
e. Powers and supervises each initiating circuit so that a signal on one zone does not prevent
receipt of signals from other zones.
f. Mounts so that no part of the enclosing cabinet is less than 305 mm 12 inches above the
finished floor nor more than 1980 mm 78 inches above the finished floor. Mount manually operated
controls at least 915 mm 3 feet and less than 1525 mm 5 feet above the finished floor.
2.1.1 Display
Each console shall conform to the following:
a. Display incoming alarms in alphanumeric format, by means of a light emitting diode, illuminated
dot matrix, or cathode ray tube.
(1) Indicate the identity with a minimum of four digit 0002-9999, time, date, and type of signal
(alarm, trouble) code number assigned to the originating transmitter.
(2) Include a message of a minimum of 3 lines of 20 characters each for each transmission (minimum
500 transmitter capacity). The message shall be [pre-programmed into the memory as directed
by the Contracting Officer] [operator-programmable into the memory through a keyboard which
shall be provided].
b. Include a means to manually clear and reset the display. If the display is not reset at
the time additional alarms are received, the additional alarms shall be retained in memory and
a distinctive audible or visual indication given to the operator that additional alarms are
waiting to be acknowledged.
(1) A minimum of 16 such alarms shall be retained for display and acknowledgement.
(2) Alarms shall be printed immediately upon receipt.
2.1.2 Memory
Provide each console with a [programmable] memory capable of retaining at least [_____] [500] transmitter codes,
together with specific messages, total number of zones possible, and related information associated with each
of the [_____] [500] transmitters. If memory is operator-programmable, restrict access into the memory for the
purpose of making additions or deletions by the use of a key switch or access code to prevent unauthorized changes.
Memory shall not be lost in the event of a total loss of primary and emergency power supplies.
2.1.3 Digital Clock
Each console shall incorporate an electronic digital clock. Clock shall display the current time expressed in
24-hour time and date (day and month) and shall transmit to each interconnected printer the time and date that
signals are received. Provide manual means of resetting the clock.
2.1.4 Printers
Provide printers of high speed, computer compatible, low noise design, capable of printing incoming messages
with no messages being lost. Upon reception of an alarm, each printer shall print on paper the required visually
displayed data, including the date and time received. Provide standard size paper for recording messages, commercially
available from three or more manufacturers, usable on a computer printer or adding machine, and continuous feed.
Include paper take-up devices for storing printouts. Print alarms in a manner to make them readily distinguishable
from acknowledgements and routine messages, by use of a different color, typeface, type size, or other distinguishable
means.
2.1.5 Audible Trouble and Alarm Devices
The audible alarm device used to indicate the receipt of alarms shall produce a sound distinct from other audible
trouble signals. The device shall be internally mounted in the console, and activated upon receipt of an alarm.
The audible sounds used to indicate trouble messages, shall be separate and distinct from the sound used to denote
receipt of alarm messages.
2.1.6 Power Supply
Provide 120-volt, 60 Hz ac primary power for each console. Supply emergency backup power by batteries capable
of powering the system for a minimum of 24 hours. Obtain the 120-volt, 60 Hz ac power supply for each console
[through a single connection into the line side of the building's regular ac service circuit] [from the building
emergency service circuit as shown] through a lockable fused disconnect switch. Provide a separate disconnect
switch for each console.
2.1.7 Emergency Power
Supply emergency power by [lead acid] [_____] type batteries having plastic cases and explosion-proof vents.
Provide batteries of sufficient capacity to operate functions of the console for no less than 24 continuous hours,
in the event of loss of ac power. Following 24 continuous hours of operation by batteries, batteries shall have
ample capacity to operate all components of the system, including alarm signaling devices in the total alarm
mode for a period of 10 minutes. Size batteries to deliver 50 percent more ampere/hour than required for the
calculated capacities. Mount batteries on racks designed for mounting batteries. Provide a termination cabinet
as part of the required rack. Locate battery racks where shown.
2.1.7.1 Emergency Power Switchover
In the event of loss of normal ac power, provide automatic transfer to the emergency power mode, without interruption
or loss of console memory. When ac power is restored, provide automatic transfer back to normal mode.
2.1.7.2 Console Battery Charger
Each self-regulating charger shall have the capacity to completely recharge its associated batteries from full
discharge within 24 hours with the console fully operational on primary ac power. The console shall remain operational
on ac power with the batteries removed.
2.1.8 Console Supervision
The supervisory controls shall provide constant supervision of the operating condition of the console. Provide
individual indicators for each major component, and produce an audible signal in the event of failure of a major
component. Provide an audible signal distinctly different from the signal used to annunciate alarms. Provide
a switch to silence the audible trouble signal. Provide separate alarm trouble lamps for each zone alarm initiating
circuit, located on exterior of cabinet door or visible through the door. Provide a suitable means for testing
the control panel meter or lamp visual indicating devices.
2.1.9 Tie-Line Repeater
NOTE: Tie-line repeaters are required only where signals are to be repeated
or retransmitted to other fire stations. Where Type A central system is provided,
a one-way repeater is required. Type B systems require a two-way repeater.
Provide a [one-way] [two-way] tie-line repeater with the control unit.
2.1.10 Variable Code Transmitter
NOTE: This device is required in only Type A systems where a telegraphic (coded)
circuit is one of the two dispatch circuits required by NFPA 1221, but may be
provided on Type B systems. Wherever more than five circuits are provided on
a Type A system a reserve variable code transmitter shall also be provided.
Provide for transmitting a manually selected code to fire stations from alarm receiving headquarters. Provide
a momentary-contact "Start" push button on the face of the transmitter to set the transmitter into operation.
Provide a separate push button "Restore" switch to permit the operator to instantly clear the transmitter for
another alarm and to restore all numerical selectors to the unset position. Provide transmitter capable of the
following:
a. Being set to transmit any combination of codes up to and including 9-9-9-9.
b. Transmitting from one to four complete rounds of the selected code number.
c. Transmitting signal at rates varying from 1/4 second to 3 1/4 second impulses.
2.2 AUDIBLE ALARM
NOTE: Provide a remote trouble device when the control panel is located in
an area where the control panel integral trouble signal normally cannot be heard.
Provide an audible alarm device arranged to sound whenever an abnormal condition exists, such as box or alarm
circuit trouble, low battery voltage, or low supervisory current. Provide distinctive trouble indication for
each type of trouble condition and an audible alarm silencing switch. Operation of the silencing switch shall
not delete the activated trouble indicator. With the switch in the "silence" position, the audible signal shall
re-sound when the trouble condition is corrected. The control unit shall automatically prevent interference between
circuits to the same degree as the noninterference feature between boxes on the same circuit. Mount unit in
a compact [free-standing floor] [desk-top] cabinet. Provide voltmeters and millimeters on the face of each unit.
Provide a rigid plastic or metal identification sign which reads "Fire Alarm System Trouble" at the device.
2.3 SOUNDING DEVICES
NOTE: In a Type B system a single gong located in the alarm receiving center
is permitted as a common sounding device for more than one circuit. In a Type
A system a separate sounding device shall be provided on each box circuit and
shall be installed at the same location as the recording device for that circuit.
Provide a 255 mm 10 inch diameter single-stroke [electric] [mechanical] operated gong at locations indicated.
Connect gong to the control unit so that gong sounds the code of each operated fire alarm box.
2.4 CIRCUIT PROTECTION DEVICES
NOTE: The one-half ampere protection on tie-line circuits shall be omitted
at all stations other than the alarm control center.
Protect box circuit and tie-line conductors entering the alarm control center by the following devices, in the
order named, starting from the exterior circuit. Provide lightning arresters at locations on the system [as
required by NFPA 1221.] [and as indicated.]
a. A fuse rated at 7 amperes and not less than 2000 volts.
b. A lightning arrestor.
c. A fuse, or circuit breaker, rated at one-half ampere, fast-blow for solid state circuits.
2.5 STANDARD FIRE ALARM BOXES
Connect manual stations into alarm initiating circuit. Provide coded, positive, noninterfering type with succession
features. Provide boxes capable of transmitting through ground in the event of a single open in the circuit.
Provide pre-wound, open-door-pull-lever type boxes that conform to applicable requirements of UL 38. The house
mechanism shall be in a weatherproof cottage-shell type of housing with metallic bronze or nickel-alloy or rigid
plastic code number plate mounted on the exterior face of the cottage shell. Stations requiring breaking of
glass or plastic panels for operation are not acceptable; however, stations employing glass rods are acceptable.
Gravity or mercury switches are not acceptable. Finish the housing in gloss [red] [yellow] enamel with a reflective,
highly visible label imprinted with the word "FIRE" in minimum 50 mm 2 inch block characters on both sides of
the box. Code wheel shall be metallic [or nylon derivative] and code shall be as developed by the coding plan
for the code wheel location. Operation of the actuating pull lever shall cause the box to transmit 4 complete
round groups of code to all gongs, recorders, and other devices on the circuit to which the pull lever is connected.
Driving springs shall have the capability to transmit not less than 8 complete 4-round groups of code before
being rewound. Design boxes for operation on 100 milliamperes dc, but with capability of full operation at 70
milliamperes and up to 120 milliamperes. Box mechanism shall be capable of transmitting signals at varying rates
of speed ranging from electrical impulses at 3 1/4 second intervals to 1/4 second intervals and shall be field
adjustable to any speed within this range. Equip each box with manual signaling key, silent test device, and
box shunt device.
2.5.1 Master Fire Alarm Boxes
Provide type identical to standard boxes except that, in addition, equip each master box with a [shunt] [local-energy]
type auxiliary tripping coil for connection to building protective or alarm system devices.
2.5.2 Fire Alarm Box Mounting
Provide [wall] [pole] [or] [pedestal] mounting [as indicated] with box center 1525 mm 5 feet above grade. Mounting
bolts, brackets, fastenings, and conduit shall be copper-alloy, cadmium, or zinc-coated steel. Provide a ruby-globe
marker lamp in a weatherproof gasketed cast aluminum housing at each fire alarm box. Locate marker lamp housing
above the box, and arranged so that moisture cannot collect at the junction of globe and fixture. Marker lamp
shall be a 130 volt, 25 watt, extended service lamp. Provide zinc-coated steel pedestal and finished in at least
two coats of red enamel. Pedestal shall include box mounting assembly, terminal strip, and terminal strip access
door.
2.5.3 Fire Alarm Box Grounding
Provide connection from the grounding terminal connection of the box to either a driven ground rod or a buried,
metallic water pipe. Resistance to ground shall not exceed 5 ohms. Do not consider the grounded neutral connection
of a three-phase or single-phase power supply as an adequate ground for the fire alarm box ground.
[2.5.4 Auxiliary Transmitter
Configure auxiliary transmitter for automatic actuation through auxiliary connections to local protective signaling
systems [and initiating devices]. Auxiliary transmitters shall comply with the paragraph entitled "Master Fire
Alarm Boxes" but are not fitted with a pull lever [and may be housed in noncottage-shells type enclosures].
]2.6 OVERVOLTAGE AND SURGE PROTECTION
2.6.1 Power Line Surge Protection
Protect equipment connected to ac circuits from power line surges. Equipment shall meet requirements of IEEE C62.41.1
and IEEE C62.41.2. Do not use fuses for surge protection.
2.6.2 Communications Link Surge Protection
Protect communications equipment against surges induced on communications links. Install surge protection circuits
at each end of cables and conductors, except fiber optics, which serve as communications links, to meet the following
two waveforms:
a. A 10 microsecond by 1000 microsecond waveform with a peak voltage of 1500 volts and a peak
current of 60 amperes.
b. An 8 microsecond by 20 microsecond waveform with a peak voltage of 1000 volts and a peak
current of 500 amperes. Provide protection at the equipment. Install additional triple electrode
gas surge protectors, rated for the applications, on each wireline circuit within three feet
of the building entrance. Do not use fuses for surge protection.
2.6.3 Sensor Wiring Surge Protection
Protect digital and analog inputs and outputs against surges induced by sensor wiring installed outdoors and
as shown. Test inputs and outputs with the following two waveforms:
a. A 10 microsecond by 1000 microsecond waveform with a peak voltage of 1500 volts and a peak
current of 60 amperes.
b. An 8 microsecond by 20 microsecond wave form with a peak voltage of 1000 volts and a peak
current of 500 amperes. Do not use fuses for surge protection.
2.7 FIRE ALARM SYSTEM POWER SUPPLY
Provide dc power supply consisting of rectifier/battery charger, battery power supply, necessary transformers,
and inverters, in the central alarm receiving location [and in each fire station] as indicated. Provide two
sources of electrical power for each box circuit, [dispatch circuit,] and alarm transmitting or receiving device,
including fire station equipment requiring local power for operation. Power supply shall conform to [NFPA 1221
for Form 4A] [NFPA 72 for primary and secondary power supplies for Central Supervising Station].
2.7.1 AC Power
Obtain power from the line side of the main electrical service to each building. At the location indicated,
provide a circuit disconnecting means in a locked cabinet with the function clearly and permanently identified.
Provide circuit protection in each ungrounded conductor located in a locked cabinet immediately adjacent to the
point of connection to light and power conductors.
2.7.2 Rectifier/Charger
Supply each rectifier/charger through an isolating transformer taking energy from a circuit not exceeding 240
volts. Rectifier/charger leads shall fuse at not less than one ampere and at not more than 200 percent of the
maximum connected load. Rectifier/charger shall be a fully automatic, variable rate, filtered battery charger
capable of providing 150 percent of the connected battery load. Adjust charger in accordance with the battery
manufacturer's recommendations to provide full "float" voltage to compensate for the load and maintain the batteries
at full voltage. Charger shall be properly fused and shall incorporate a dc voltmeter and dc ammeter. [Provide
a manual high-rate-of-charge switch together with a red pilot light to indicate when batteries have been manually
placed on high charging rate.]
2.7.3 Batteries
NOTE: Nickel-cadmium batteries should not be specified over lead-calcium type
unless some unusual environmental or operational condition warrants the additional
cost of nickel-cadmium. For normal installations, battery selection may be
left as a contractor's option. Ensure battery room or location has adequate
ventilation to keep hydrogen concentrations below 3 percent.
Provide [sealed,] wet-cell, [lead-acid (lead antimony)] [or] [lead-calcium] type, adequate to provide each transmitter
with a minimum of 24-hour standby capacity. Mount batteries [on racks] [in cabinets] designed for mounting batteries.
Provide reliable separation between cells and from ground. Connect batteries to "float" on the exterior fire
alarm reporting and receiving system circuits.
2.7.4 Electronic Inverters
NOTE: Nickel-cadmium batteries should not be specified over lead-calcium type
unless some unusual environmental or operational condition warrants the additional
cost of nickel-cadmium. For normal installations, battery selection may be
left as a contractor's option. Ensure battery room or location has adequate
ventilation to keep hydrogen concentrations below 3 percent.
Provide units capable of 115-volt 60-Hz ac output in alarm receiving headquarters [and in each fire station]
for operating alarm receiving, alarm transmitting, recording and signalling devices, or components requiring
115 Vac. Inverters shall be battery powered and arranged to operate automatically in the event of loss of normal
ac power. Provide battery power supply from either the main alarm system standby battery or from separate [sealed,]
wet-cell, [lead-acid (lead antimony)] [or] [lead-calcium] batteries and charger. Provide battery power supply
to sustain the connected devices under normal operating load for a minimum of 24 hours. If supplied from the
main alarm system, provide alarm system batteries to sustain connected loads for the full 24-hour period.
2.7.5 Transformers
NOTE: Detail transformers on drawings.
Provide isolation and step-down transformers for proper operation of the various components of the system.
2.8 WIRING
Provide color coded wires and cables.
2.8.1 Wiring Within Buildings
NOTE: Type THW insulation can only be obtained in large quantity. Use of this
type insulation is not recommended for small projects.
Provide in conduit or electrical metallic tubing, except wiring within cabinets and other components of the system.
Wiring for 120-volt circuits shall be not less than No. [12] [_____] AWG. Wiring shall comply with NFPA 70 and
NFPA 1221. Conductors shall be copper, Type [THW] or [THWN] conforming to UL 83. Color code conductors. Distinctly
color code conductors used for the same functions. Use two different color codes for each alarm circuit; one
for each loop. Wiring color code shall remain uniform throughout the circuit.
2.8.2 Cables for Fire Alarm Service
NOTE: Whenever cables enter the fire station or fire alarm headquarters or
emerge from direct burial or underground duct locations and continue aboveground
as aerial messenger cables or open wire aerial loops they shall be protected
by lightning arresters. These must be indicated on the drawings.
2.8.2.1 Underground Cables
Cables [provided in duct-and-manhole systems] [buried directly in earth] shall be in accordance with Sections
31 00 00 EARTHWORK and 33 71 02.00 20 UNDERGROUND UNDERGROUND TRANSMISSION AND DISTRIBUTION. Concrete work for
underground distribution system and appurtenances shall be in accordance with Sections [03 30 00 CAST-IN-PLACE
CONCRETE] [33 71 02.00 20 UNDERGROUND UNDERGROUND TRANSMISSION AND DISTRIBUTION]. Power wiring shall be copper
Type USE conductors not less than No. [_____] AWG in size conforming to NFPA 70. Exterior fire alarm reporting
and receiving system cable shall consist of individually insulated conductors and double polyethylene outer jacket
[and copper tape shield between jackets for direct burial] not less than No. [_____] AWG in size. Wires and
cables shall be one piece without splices between connections except where the distance exceeds the lengths in
which cable is manufactured. Make splices only in manholes, handholes, or other protected and accessible space.
2.8.2.2 Cables Provided in an Exterior Overhead System
Cables shall be in accordance with Section 33 71 01 OVERHEAD TRANSMISSION AND DISTRIBUTION. Cables shall be
copper not less than No. [_____] AWG in size and shall conform to NEMA WC 3 or NEMA WC 70 or NEMA WC 71. Cables
shall be in one piece without splices between connections except where the distance exceeds the lengths in which
the cable is manufactured. Support cables from copper-encased steel or galvanized messenger wire or strand by
a continuous spirally wrapped lashing wire of copper-encased steel, galvanized steel, or stainless steel. Messenger
wire or strand shall conform to IMSA 32, [30] [40] percent conductivity or ASTM A 475, Siemens-Martin Utilities
or HIGH Strength with Class A or B galvanizing.
2.8.2.3 Identification Slabs (Markers)
Provide markers in accordance with Sections 33 71 02.00 20 UNDERGROUND UNDERGROUND TRANSMISSION AND DISTRIBUTION,
and provide at each change of direction of cable, over the ends of ducts or conduits that are provided under
paved areas and roadways, and over each splice.
2.8.3 Wire Markers
Provide markers at both ends of each wire connected to the control board. Provide taped-band type markers, of
permanent material, permanently stamped with the proper identification. The taped band shall be white and the
markings black in color so that the identification can be easily read. Attach the markers to the wires in a manner
that will not permit accidental detachment.
2.9 CONDUIT
2.9.1 Rigid Steel Conduit Zinc-Coated
NEMA C80.1.
2.9.2 Intermediate Metal Conduit (IMC)
UL 1242, zinc-coated steel only.
2.9.3 Electrical Metallic Tubing (EMT)
NEMA C80.3.
2.10 OUTLET BOXES
UL 514A, zinc-coated steel.
2.11 FITTINGS FOR CONDUIT AND OUTLET BOXES
UL 514B, zinc-coated steel.
2.12 GROUND RODS
Rods shall be the sectional type, copper-encased steel, with a minimum diameter of 19 mm 3/4 inch and a minimum
length of 3045 mm 10 feet. The rods shall have a hard, clean, smooth, continuous copper surface, and the proportion
of copper shall be uniform throughout the length of the rod. Copper shall have a minimum wall thickness of 0.33
mm 0.013 inch at any point on the rod. Rods shall comply with the UL 467 requirements.
2.13 KEYS AND LOCKS
Key locks alike. Furnish tags with stamped identification number for keys and locks.
2.14 NAMEPLATES
Securely attach to each major component of equipment a noncorrosive and nonheat sensitive plate indicating the
manufacturer's name, address, type or style, voltage and current and current rating, and catalog number.
2.15 PAINTING
Factory paint switch boxes, fire alarm boxes, transmitters, and gongs with a priming coat and not less than two
coats of a hard, durable weatherproof enamel. The finish color shall be [red] [_____] gloss. Treat and paint
control boards in accordance with the manufacturer's standard practice. Steel pedestals and other exterior work
shall have a suitable priming coat and not less than two coats of approved enamel with finish color as selected
by the Contracting Officer. Repaint painted surfaces damaged during installation of the exterior fire alarm
reporting and receiving system with color to match existing paint.
PART 3 EXECUTION
3.1 INSTALLATION
Install the exterior fire alarm reporting and receiving system in accordance with NFPA requirements, the manufacturer's
diagrams and recommendations, and this section.
3.2 VERIFICATION OF CONDITIONS
Become familiar with details of the work, verify dimensions in the field, and advise the Contracting Officer
of discrepancies before performing the work.
3.3 WIRING
Wiring shall be in rigid steel conduit, intermediate metal conduit or electrical metallic tubing. Identify circuit
conductors within each enclosure where a tap, splice, or termination is made. Attach markers in a manner that
will not permit accidental detachment. Identify control circuit terminations. Unless otherwise indicated, wiring
and conduit will be new. Do not run fire alarm circuits in the same conduit with non-fire alarm circuits. Do
not run ac circuits in the same conduit with dc circuits.
3.4 GROUNDING
NOTE: Connections subject to moisture or corrosive influences should be welded
or brazed.
Ground equipment in accordance with NFPA 70. Measure the resistance of each connection to ground. Ground resistance
shall not exceed 5 ohms.
3.5 CABLE SPLICES
Make splices only where the distance between connections exceeds the length in which the cable is manufactured.
Splices shall conform to Section 33 71 02.00 20 UNDERGROUND UNDERGROUND TRANSMISSION AND DISTRIBUTION, and the
cable manufacturer's recommendations.
3.6 SPECIAL CONNECTIONS
3.6.1 Branch or "Y" Connections for Cables
Make these connections only aboveground at fire alarm stations, on structures, or in manholes and handholes as
approved. Provide cable terminations in fire alarm station enclosures or in boxes or cabinets equipped with
telephone-type terminal boards. Provide weatherproof enclosures in exterior or wet locations and watertight
in manholes and handholes.
3.6.2 Welded and Brazed Connections
NOTE: When welded or brazed connections are not indicated or specified, delete
this paragraph.
Welding or brazing process shall not weaken the parts joined and shall join strands. Provide welding process
so that the completed joint or connection will be one homogeneous mass equal to or larger in size than the cables
and wires joined. An exothermic type welding method may be used, employing a measured heat supply and molds
designed for the conductors joined. Perform brazing process with operators experienced in work of a similar
character and in a manner that will not damage the parts joined. [Approved splice cap swaged spike terminations,
insulation wrapped and epoxy potted, may be substituted for welded and brazed connections.]
3.7 CORROSION AND FUNGUS PREVENTION
Protect metallic materials against corrosion. Coat outdoor equipment with a rust inhibiting treatment and standard
finish by the manufacturer. Do not use aluminum in contact with the earth. Protect dissimilar metals with approved
fittings and treatment. Coat steel conduits installed underground with an approved asphaltic paint or plastic
coating, or wrap with a single layer of a pressure sensitive plastic tape, half-lapped. Protect components against
corrosion and fungus. Coat printed circuit board with epoxy.
3.8 FIELD QUALITY CONTROL
3.8.1 Tests During Installation
Conduct the following tests during installation of wiring and system components. Correct deficiencies prior
to formal functional and operational tests of the system. Tests shall include meggering system conductors to
determine that system is free from grounded or open circuits. Complete the megger test prior to installation
of fire alarm equipment.
3.8.1.1 Ground Resistance Tests
Resistance of each connection to ground shall be measured and not exceed 5 ohms.
3.8.1.2 Dielectric Strength and Insulation Resistance Tests
Test dielectric strength and insulation resistance of the system interconnecting wiring by means of an instrument
capable of generating 500 V dc and equipped to indicate leakage current in terms of resistance.Provide test instrument
capable of indicating 1000 megohms. For the purpose of this test, connect the instrument between each conductor
on the line and between each conductor and ground at the control panel end of the line, with the other extremity
open-circuited and series-connected devices in place. The system shall withstand the test without breakdown
and indicate a resistance of not less than 500,000 ohms, the measurement being taken after an electrification
of not more than one minute with a dc potential of not less than 100 volts nor more than 550 V dc.
3.8.1.3 Power Supply Tests
Conduct a complete test of the power supply including rectifier, charging rates, and automatic controls. Record
operating input and output line voltages and current (load) at the time of the tests.
3.8.1.4 Supervisory Features and Trouble Alarm Circuit Test
Make detailed tests of supervisory features and trouble alarm circuits and relays.
3.8.1.5 Box and Transmitter Tests
Prior to commencement of tests, prepare sketches on letter-size sheets indicating electrical sequence from the
control panel of manual boxes and transmitters. Test each box on each box circuit as follows: Electrically operate
the farthest box from the fire station first. Examine the printout to determine if the code contacts cause a
uniform signal to be transmitted through each of the four rounds. This test will provide a check on the box
operation and code contacts. Test the succeeding boxes or transmitters successively until each box in the box
circuit has been tested as specified. Test each box circuit separately to determine that, should two or more
devices be operated at or near the same time, the device first securing the line shall continue to transmit its
code without interference from other devices [, and that the remaining actuated devices shall similarly and subsequently
transmit their codes without interference as the line becomes available].
3.8.1.6 Signal Transmission and Recording Tests
Test each fire alarm box for signal transmission and recording, including fidelity of repeated signals on gong
circuits under normal circuit conditions with the maximum allowable current. Repeat test at 70 milliamperes.
Test alarm relays at the same time at upper and lower current limits.
3.8.1.7 Trouble Line Operation Tests
Repeat the foregoing operational test for the conditions of trouble line operation, except test relays only at
minimum current flow. Accomplish test for box circuit relays by adjusting the normal line current to 100 milliamperes
before simulating trouble line condition.
a. Simulating line trouble: Simulate line trouble by removing circuit wires from terminals
or applying grounds to these terminals in each fire alarm box. Subject each box on each circuit
to the following tests.
(1) First test for trouble line operation: Remove one or the other of the circuit wires from
the terminal of the box being tested. After waiting for the timing interval of the automatic
conditioning relay, operate the box. The signal shall be received and recorded by the recorder
and repeated in each of the gong circuits. Following this test replace the removed conductor,
remove the remaining conductor, and repeat the test.
(2) Manual-set transmitter test: Set up the complete four-digit numbers (1-1-1-1, 2-2-2-2,
through 9-9-9-9) operating the transmitter each time for full four rounds.
3.8.2 Complete Printout Documentation
Mark printouts for operational tests to identify each test.
3.8.3 Final Performance and Acceptance Tests
After the system has been in service for at least 30 calendar days, notify the Contracting Officer in writing
that the system is ready for final acceptance tests. Provide notification at least 15 calendar days prior to
the date of the final acceptance test. Submit with this notification a certificate from a service company listed
in the UL Fire Prot Dir, under "Protective Signaling - Local, Auxiliary-Remote Station and Proprietary," which
includes tests specified in paragraphs entitled "Ground Resistance," "Dielectric Strength and Insulation Resistance,"
"Power Supply," "Supervisory Features and Trouble Alarm Circuits," "Box and Transmitter Test," "Signal Transmission
and Recording," and "Trouble Line Operation." Consider the system ready for testing after necessary preliminary
tests have been made and deficiencies have been corrected to the satisfaction of the equipment manufacturer's
technical representative and the Engineering Field Division Fire Protection Engineer.
3.8.3.1 Acceptance Testing
Furnish proposed test procedures for approval at least 60 calendar days prior to commencement of acceptance testing.
Perform the tests in the presence of the [Engineering Field Division Fire Protection Engineer] [Contracting Officer]
or authorized representative under the supervision of the fire alarm reporting system manufacturer's qualified
representative.Furnish instruments, labor, and materials required for the tests. Arrange for the technician
who supervised the installation to conduct the tests. Correct deficiencies found and retest the system. Repeat
tests specified in paragraph entitled "Tests During Installation" as directed by the Engineering Field Division
Fire Protection Engineer during final acceptance tests.
3.8.4 Additional Tests
When deficiencies, defects, or malfunctions develop during the tests required, suspend further testing of the
system until proper adjustments, corrections, or revisions have been made to ensure proper performance of the
system. If these revisions require more than a nominal delay, notify the Contracting Officer when the additional
work has been completed to arrange a new inspection and test of the exterior fire alarm reporting and receiving
system. Repeat tests required prior to final acceptance, unless directed otherwise.
3.8.5 Manufacturer's Field Service
3.8.5.1 Manufacturer's Representative
Furnish the services of a qualified representative or technician of the system manufacturer, experienced in the
installation and operation of the type of system being provided to supervise testing, including final testing,
and adjustment of the system.
3.8.5.2 Instruction for Government Personnel
Conduct a training course for operating staff as designated by the Contracting Officer. The training period
shall consist of [3] [_____] training days, 8 hours per day, and shall start after the system is functionally
complete but prior to final acceptance tests. The field instructions shall cover items contained in the operating
and maintenance instructions.
3.9 CONTINUITY OF PROTECTION
During installation of the system, there shall be no loss of function of the existing base fire alarm system,
or of the local building alarm systems connected thereto. Transfer of local alarm system connections from the
existing base alarm system shall not result in loss of alarm transmitting or receiving capability. Temporary
interruption of individual building alarm connections, not to exceed 8 hours duration, will be permitted at the
discretion of the Contracting Officer. Interruption of alarm or communications functions at the fire alarm watch
office is prohibited.