Attch 24 - 28 31 66 Conventional System.docx

Solicitation No.: FA4800-11-R-0002 Attachment 24

AMENDMENT 0005

SECTION 28 31 66

FIRE DETECTION AND ALARM SYSTEM

GENERAL

1.1 REFERENCES

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.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI S3.41 (1990; R 1996) Audible Emergency Evacuation Signals

CODE OF FEDERAL REGULATIONS (CFR)

47 CFR 15 (2002) Radio Frequency Devices

FACTORY MUTUAL ENGINEERING AND RESEARCH (FM)

FM P7825a (2003) Approval Guide Fire Protection

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C62.41 (2002) Surge Voltages in Low-Voltage AC Power Circuits

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2002) National Electrical Code

NFPA 72 (2002) National Fire Alarm Code

NFPA 90A (2002) Installation of Air Conditioning and Ventilating Systems

NFPA 1221 (2002) Installation, Maintenance and Use of Public Fire Service Communication Systems

UNDERWRITERS LABORATORIES (UL)

UL 6 (2000) Rigid Metal Conduit

UL 38 (1999) Manually Actuated Signaling Boxes for Use with Fire-Protective Signaling Systems

UL 228 (1997) Door Closers-Holders, With or Without Integral Smoke Detectors

UL 268 (1996; Rev thru Jun 1998) Smoke Detectors for Fire Protective Signaling Systems

UL 268A (1998) Smoke Detectors for Duct Applications

UL 464 (1996; Rev May 1997) Audible Signal Appliances

UL 521 (1999) Heat Detectors for Fire Protective Signaling Systems

UL 632/ANSI C33.41 (2000) Electrically-Actuated Transmitters

UL 797 (2000) Electrical Metallic Tubing

UL 864 (1996) Control Units for Fire-Protective Signaling Systems

UL 1242 (2000) Intermediate Metal Conduit

UL 1971 (2002) Signaling Devices for the Hearing Impaired

1.2 DESCRIPTION OF WORK

This work includes designing, and providing a new, complete, supervised, fully operational fire alarm system as described herein and on the contract drawings for Building xxxx. The system shall include all wiring, raceways, pull boxes, terminal cabinets, outlet and mounting boxes, control equipment, alarm and supervisory signal, initiating devices, alarm notification appliances, radio transmitters, associated equipment and appurtenances required for a complete operating system even though each item is not specifically mentioned or described. The system layout on the drawings is generic. Equipment, materials, installation, workmanship, inspection and testing shall be in strict accordance with the required and advisory provisions of NFPA 72, except as modified herein. Devices and equipment for the fire alarm service shall be listed by Underwriters Laboratories, Inc., or approved by Factory Mutual. In the NFPA publications referred to herein, the advisory provisions shall be considered mandatory, although the word "shall" had been substituted for "should" wherever it appears, and reference to the "authority having jurisdiction" shall be interpreted to mean the LAFB Fire Department, Technical Services.

0. MATERIALS AND EQUIPMENT

GENERAL REQUIREMENTS

Materials and equipment shall be standard products of the manufacturer's latest design and suitable to the functions, they shall be duplicates produced any one manufacturer. The name of the manufacturer and the serial numbers shall appear on all major components. Locks for similar devices shall be keyed alike. Alarm devices shall be installed complete with standard boxes and mounting hardware. Devices installed outside shall be weatherproof.

1.3.2 Service Conditions

Equipment provided under this section shall be installed in locations where conditions do not exceed the following:

a. Ambient Temperature 15C – 30C(60F – 86F)

b. Humidity 10% – 85% at 30C (86F) noncondensing.

1.3.3 QUALITY REQUIREMENTS

All materials and equipment shall be UL listed. The Contractor shall submit proof that the items furnished under this specification conform to this requirement. Only currently manufactured equipment shall be installed. Availability of replacement parts shall be guaranteed for a minimum of one year after installation.

1.3.4 FIRE ALARM EQUIPMENT

All removed fire alarm equipment, excluding conduit and wiring, shall remain the property of the Government and shall be turned over by the Contractor to the 1CES/CEOIE Shop, Building 328.

1.4 CONTRACTOR QUALIFICATIONS

The system shall be installed by an experienced firm regularly engaged in the installation of automatic fire detection and alarm systems in accordance with NFPA standards. The Contractor must be certified by the manufacturer of the fire alarm equipment to install and test the alarm system. Certification or proper installation in accordance with NFPA standards shall be submitted by the Contractor or representative of the manufacturer of the alarm upon completion of the installation.

1.5 SUBMITTALS

The following shall be submitted in accordance with Section 01 11 00, SPECIAL CONDITIONS:

Shop Drawings

Shop Drawings shall be submitted by the Contractor and approved before installation. These drawings shall consist of a complete list of equipment and materials, complete wiring schematic diagrams for the equipment furnished, equipment layout and connection, and other details required to demonstrate that the system has been coordinated and will properly function as a unit. The record drawings and instruction manuals shall be submitted by the Contractor 7 days prior to conducting the operational test.

Data

Manufacturer's Catalog Data.

Catalog cuts, brochures, circulars, specifications, product data and printed information in sufficient detail and scope to verify compliance with the requirements of the contract documents. As a minimum, the manufacturer's catalog data submittal should include the following:

Fire Alarm Control Panel (FACP),transmitter , pull stations, batteries, battery charger, smoke detectors, heat detectors, duct detectors, audiovisual devices and visual devices

Battery Power Calculation

Substantiating battery calculations for supervisory and alarm power requirements. Ampere-hour requirements for each system component and each panel component, and the battery recharging period shall be included.

Voltage Drop

Voltage drop calculations for notification appliance circuits to indicate that sufficient voltage is available for proper appliance operation.

Spare Parts

As soon as practicable after approval of the list of equipment, and prior to the final inspection, the Contractor shall furnish three copies of spare-parts data for each different item of equipment listed. The data shall include a complete list of parts and supplies that are either normally furnished at no extra cost with the purchase of the equipment or specified below to be furnished as part of the contract; and a list of additional items recommended by the manufacture to assure efficient operation for a period of 120 days at the particular installation.

Record Drawings

Detailed as-built, reproducible (mylar) drawings shall be provided by the Contractor and shall include the exact location of all existing and installed fire alarm devices, including the order of wiring for all new devices; and detailed wiring diagrams showing the hook-up and interconnection of all alarm devices, number and size of wire used, color coding, and the type, amount, manufacturer, model, and a part number of all fire alarm devices.

Record Drawing Software

Provide one set of floppy diskettes containing AUTOCAD Version 14 or later based drawings, in DWG or DXF format of all as-built drawings and schematics.

Statements

Testing

Detailed test procedures, prepared and signed by a Registered Professional Engineer or a NICET Level 3 Fire Alarm Technician, for the fire detection and alarm system 14 days prior to performing system tests.

Reports

Testing

Test reports, in booklet form, showing field tests performed to prove compliance with the specified performance criteria, upon completion and testing of the installed system. Each test report shall document readings, test results and indicate the final position of controls. The Contractor shall include the NFPA 72 Certificate of Completion and NFPA 72 Inspection and Testing Form, with the appropriate test reports.

Certificates

Equipment

Certified copies of current approvals or listings issued by an independent test lab if not listed by UL, FM or other nationally recognized testing laboratory, showing compliance with specified NFPA standards.

Qualifications

Proof of qualifications for required personnel. The installer shall submit proof of experience for the Professional Engineer, fire alarm technician, and the installing company.

Operation and Maintenance Manuals

Three original copies of operating manual outlining step-by-step procedures required for system startup, operation and shutdown. The manual shall include the manufacturer's name, model number, service manual, parts list and complete description of equipment and their basic operating features. Three original copies of maintenance manual listing routine maintenance procedures, possible breakdowns and repairs, and troubleshooting guide. The manuals shall include conduit layout, equipment layout and simplified wiring, and control diagrams of the system as installed. Documents shall be bound in a suitable binder adequately marked or identified on the spine and front cover. A table of contents page shall be included and marked with pertinent contract information. Tabs shall be provided to separate different types of documents, such as catalog ordering information, drawings, instructions and spare parts warranted by the quantity of documents included under separate tabs or dividers.

PART 2 PRODUCTS

2.1 CONTROL PANEL

Control panel shall be installed as part of the system in the building and shall be approved for use with the fire-detecting equipment, manual fire-alarm boxes or stations, and alarm-sounding appliances. The control panel shall be located where indicated and shall be housed in a substantial steel cabinet with lock and key. The control panel shall be painted red inside and out. The control panel shall include a suitable means for testing the system through each electrically supervised circuit. The panel shall be arranged so as to operate the alarm signaling devices in the event of fire and to continue operation until silenced by a switch within the unit cabinet. The control panel shall operate to allow an alarm from any one zone to be silenced, but allows subsequent alarms from other zones to resound the alarm. Status indicators (LEDs) shall be plainly visible when the cabinet of the control panel is closed. Circuit boards shall be the plug-in type. All cabinet knockouts or holes shall be patched and sealed. Supervision of all alarm devices, including pull stations, signaling devices and detectors shall be maintained. Circuitry and zoning modules shall be Class "A". Individual supervisory LEDs shall be provided to monitor the primary power, the charger, the batteries and wiring, for "ground fault". The panel shall include a test switch to test all LEDs. In addition, the control panel shall have an on/off switch to de-energize the incoming A/C power.

2.1.1 ANNUNCIATOR PANEL

Annunciator panel shall be part of the fire alarm control panel. An annunciator window shall be provided for each zone. Each zone annunciator shall include an amber trouble lamp (LED) and a red alarm lamp (LED). Each lamp shall provide specific identification of the zone area by means of a permanently attached rigid plastic or metal sign with either raised or engraved letters. In no case shall zone identification consist of the words "Zone 1, Zone 2," etc., but shall consist of the description of the device locations. Zoning shall be as shown on the drawings. All spare annunciators shall be labeled as such. Spare zones shall be active, Class "A", plug-in modules installed in the control panel. A warranty card shall be firmly attached in the control panel, providing general warranty information; such as contract number, project number, name and phone number of the Contractor, effective dates of warranty, etc. Near the annunciator panel a one-line drawing shall be provided; indicating the general room arrangement of the detector and alarm locations, zone configuration and wiring order is all devices. In mechanical rooms and similar shop area, these one-line drawings shall be installed in a picture frame with class cover. In other finished areas, such as hallways and offices, these drawings shall be installed in plastic protective covers and shall be located within the panel.

2.2 TRANSMITTERS

The main base station presently employs a Monaco Enterprise, Inc., Model D-700 Central Radio Transmitter/Receiver System, tuned for a VHF FM frequency of 143.55 MHz. The unit utilizes a Monaco Model BSA-1 Omni-Directional Antenna for transmitting and receiving. The building transmitter/receiver shall be of the coded type that is fully compatible with the central system. The transmitter shall be electrically supervised, designed to transmit coded fire alarm signals and distinctive code trouble signal over the tuned radio waves to the central alarm location. Transmission of a coded trouble signal shall automatically result in a break in a fire detecting circuit or interior manual fire-alarm box circuit or from failure of main power supply for transmitters or alarm bell operation. Provisions shall be made also for a restoration signal upon restoration of the transmitter, interior circuits and power supply to normal standby condition after a fire alarm or trouble signal. A fire-alarm signal consists of not less than three complete transmissions of a code number identifying the transmitter is acceptable as a trouble signal and one or more as a restoration signal. The transmitter shall come complete with a compatible omni-directional antenna, including mounting hardware and coaxial cable, necessary to provide an operational system. System shall be suitable for operating up to a range of 35 miles. The antenna system shall be grounded to a separate ground rod system, complete with lighting arrestor in rainproof enclosure with a minimum of a No. 6 ground conductor. The transmitter shall be housed in a lockable metal cabinet painted red inside and out. A stamped or engraved plate bearing the code number of the transmitter shall be securely attached to the front of the cabinet. The existing base central alarm is located in Building 375. The Contractor shall provide 3 spare zone modules.

2.3 SPARE ZONES

The Contractor shall program zones as directed by the CONTRACTING OFFICER. The Contractor shall provide a minimum of 4 spare zones spare zone modules completely installed, tested and wired to the output terminal strip for connection of new zone detectors. The spare zone modules shall be installed complete in the annunciator panels, control panels and the transmitter. All interconnection between each panel and the transmitter shall be wired complete.

2.4 Primary Power

2.4.1 Primary Power Supply

Primary power supply shall be 120 volts AC service, transformed through a two winding isolation type transformer and rectified to 24 volts DC for operation of all circuit and devices. Rectifiers shall be of the solid state type. Power shall be provided from a single dedicated branch circuit via 20 amp lockable circuit breaker and fusible disconnect switch. Paint the circuit breaker and disconnect switch red and identify them by the lettered designation “FIRE ALARM SYSTEM POWER”. Disconnect switch shall be located adjacent to Fire Alarm Control panel and sized in accordance with NEC. The connection shall comply with applicable requirements of NFPA 72. 120 volt power-supply wiring shall be in conduit or metallic tubing. Transformer, rectifier, resistor(s) and other required power-supply components shall be incorporated in the control unit or a separate power-supply unit may be furnished and installed if approved for the application by the Contracting Officer.

2.4.2 Standby Power Supply

Provide standby power for operation of system in the event of failure of the AC source. The transfer to battery shall be automatic upon failure of the primary power supply; indicated by a trouble signal at the control alarm location; and arranged so there will be no strain on the battery except upon transfer and during a fire alarm. Restoration of primary power supply shall automatically disconnect the battery and reconnect the main supply. The batteries shall be housed in the control unit cabinet. To prevent rapid battery deterioration, positive separation shall be provided to prevent contact between cell terminals. Trickle charge shall be provided to maintain the emergency power supply at peak reserve power. The charger will automatically switch to a high rate charge if the battery voltage drops below full charge capacity.

2.4.2.1 Batteries

Back-up power shall consist of panel mounted, long-life, sealed, rechargeable gel cell batteries, of the power ampere-hours rating to operate the system and master box tripping circuits for a minimum of 24 hours under normal conditions, and to operate all audible signaling devices and transmission and control devices under alarm conditions for 15 minutes. Batteries shall be sized to allow for 20% growth in the alarm system. Calculations substantiating the above requirements shall be submitted by the Contractor to the Contracting Officer for approval before installation. Batteries shall be separated from the cabinet by a piece of non-conductive rubber material to provide additional corrosion protection

2.4.2.2 Battery Charger

Provide a solid state, fully automatic, variable charging rate battery Charger. The charger shall be capable of providing 100 percent of the connected system load and shall maintain the batteries at full charge, In the event the batteries are fully discharges the charger shall recharge them back to charge within 24 hours.

2.5 Manual Pull Stations

Provide noncoded, metal, surface-mounted, double action, manual stations, with a key operated test-reset lock. Stations shall be located near exits in the approximate locations shown. Stations shall be a type not subject to operation by jarring or vibration. Surface-mounted boxes shall be painted the same color as the alarm station. Mount stations with the base at 4 feet 6 inches above finished floor. Stations shall be equipped with screw terminals of the proper number and type to perform function required. Stations which require the replacement of any portion of the device after activation are not permitted. Stations shall be metal finished in red, with instructions of contrasting color. Provide separate screw terminal for each conductor connected to the manual alarm station. Where weatherproof stations are required, provide stations with cast metal, weatherproof (NEMA 3R) housings with hinged access doors; finish housings with red enamel paint and provide permanently affixed engraved or raised-letter plastic or metal identification signs reading “FIRE ALARM” with white letters a minimum 3/4 inch high.

2.6 FIRE DETECTING DEVICES

Fire detecting devices shall comply with the applicable requirements of NFPA 72, NFPA 90A, UL 268, UL 268A, and UL 521. The detectors shall be provided as indicated. Actual locations shall be adjusted to avoid obstructions and to comply with NFPA standards. Detector base shall have screw terminals for making connections. No solder connections will be allowed. Detectors located in concealed locations (above ceiling, raised floors, etc.) shall have a remote visible indicator LED/LCD. Fire detecting devices shall be dynamically supervised and uniquely identified in the control panel. Devices located in areas subject to moisture or exterior atmospheric conditions or hazardous locations as defined by NFPA 70, shall be types approved for such locations.

2.6.1 Heat Detectors

Provide heat detectors as follows:

a. Heat detectors shall be fixed temperature (135 degrees F) type unless ceiling temperatures require a higher temperature rating in accordance with NFPA 72. Heat detectors installed in mechanical rooms, attics or other non cooled areas as specified shall be fixed temperature (190 degrees F). Detectors shall be spaced above all ceilings throughout the building in accordance with the requirements of NFPA 72 and manufacturer's listed spacing. The use of rate of rise detectors shall be prohibited. Detectors shall be equipped with screw terminals for each conductor. Detectors shall not be supported from suspended acoustical tile ceiling. Detectors located in areas subject to moisture or exterior atmospheric conditions or hazardous locations as defined by NFPA 70, shall be types approved for such locations.

b. Provide detectors with a visual indicator below the suspended ceiling to show that the detector has operated.

2.6.2 Smoke Detectors

2.6.2.1 Photoelectric Smoke Detectors

Provide photoelectric smoke detectors as follows:

a. Provide photoelectric smoke detectors utilizing the photoelectric light scattering principle for operation in accordance with UL217 and UL218. Smoke detectors shall be listed by UL or FM for use with the fire alarm control panel.

b. Provide self-restoring type detectors which do not require any readjustment after actuation to restore them to normal operation. Detectors shall be UL listed as Smoke-Automatic Fire Detectors.

c. All components shall be rust and corrosion resistant. Vibration shall have no effect on the detector's operation. Protect the detection chamber with a fine mesh metallic screen which prevents the entrance of insects or air born materials. The screen shall not inhibit the movement of smoke particles into the chamber.

d. Provide twist lock bases for the detectors. The detectors shall maintain contact with their bases without the use of springs. Provide companion mounting base with fixed wiring terminals. Terminate field wiring on the fixed terminals. The detector shall have a visual indicator to show actuation.

e. Detectors shall be equipped with screw terminals for each conductor.

2.6.2.2 Duct Smoke Detectors

Duct smoke detectors shall be photoelectric type and be furnished and installed where indicated and in accordance with NFPA 90A. Required detectors shall be installed so as to allow convenient access for testing and cleaning. Detectors shall be powered from the fire alarm panel. Sampling tubes shall run the full width of the duct. The duct detector package shall conform to the requirements of NFPA 90A, UL 268A, and shall be UL listed for use in air-handling systems. The control functions, operation, reset and bypass shall be controlled from the fire alarm control panel. Lights to indicate the operation and alarm condition; and the test and reset buttons shall be visible and accessible with the unit installed and the cover in place. Detectors mounted above 6 feet and those mounted below 6 feet that cannot be easily accessed while standing on the floor, shall be provided with a remote detector indicator panel containing test and reset switches. Remote lamps and switches as well as the affected fan units shall be properly identified in etched plastic placards. Detectors shall have auxiliary contacts to provide control, interlock, and shutdown functions specified in Section 15950 HEATING, VENTILATING AND AIR CONDITIONING (HVAC) CONTROL SYSTEMS. The detectors shall be supplied by the fire alarm system manufacturer to ensure complete system compatibility. All wiring and controls required for compliance with this specification shall be furnished, installed and connected by the Contractor. Each air handler shall be individually zoned for annunciation in the control panel.

2.7 Notification Appliances

2.7.1 Audible Notification Appliances

Audible appliances shall conform to the applicable requirements of UL 464. Devices shall be connected into notification appliance circuits. Devices shall have a separate screw terminal for each conductor. Audible appliances shall generate a unique audible sound from other devices provided in the building and surrounding area. Audible signaling devices shall be heavy-duty type, 24 volts DC, mounted on the wall, below the ceiling, at least seven feet above the floor. Actual locations shall be adjusted as necessary to provide the required sound coverage. Devices shall be red in color. Horns shall produce a sound output rating of at least 90 decibels at 10 feet.

2.7.2 Visual Notification Appliances

Visual notification appliances shall conform to the applicable requirements of UL 1971 and the contract drawings. Appliances shall have clear high intensity optic lens, xenon flash tubes, and output white light. The strobe lens shall comply with the American with Disabilities Act (A.D. A.). The light pattern shall be disbursed so that it is visible above and below the strobe and from a 90 degree angle on both sides of the strobe. The strobe flash output shall be a minimum of 75 candela based on its location and higher in other areas per A.D.A., have a xenon flash tube, labeled, "FIRE" and flashed between 60 and 120 times per minute.

2.7.3 Combination Audible/Visual Notification Appliances

Combination audible/visual notification appliances shall provide the same requirements as individual units except they shall mount as a unit in standard backboxes. Units shall be factory assembled. Horns installed in open hangar or other high noise areas shall include a red visual indicator (light).

2.7.4 Connections

Provide screw terminals for each notification appliance. Terminals shall be designed to accept the size conductors used without modification.

2.8 Waterflow Detectors

a. Connect waterflow detectors into the fire alarm system.

2.9 TOOLS AND SPARE PARTS

The Contractor shall furnish any special tools necessary for the maintenance of the new equipment; one spare set of fuses for each control unit; one set of keys for each keyed device; one spare detector of each type and rating; one spare pull station, and one spare signaling device.

2.10 WIRING

Provide wiring under this section as specified in Section 16415 Electrical Work, Interior, with the additions and modifications specified herein.

2.10.1 System Field Wiring

2.10.1.1 Wiring Within Cabinets, Enclosures, Boxes, Junction Boxes and Fittings

Provide wiring installed in a neat and workmanlike manner and installed parallel with or at right angles to the sides and back of any box, enclosure or cabinet. All conductors which are terminated, spliced or otherwise interrupted in any enclosure, cabinet, mounting or junction box shall be connected to terminal blocks. Mark each terminal in accordance with the wiring diagram of the system. Make all connections with approved pressure type terminal blocks, which are securely mounted. The use of wire nuts or similar devices shall be prohibited.

2.10.1.2 Terminal Cabinets

Provide a terminal cabinet at the base of any circuit riser, on each floor at each riser, and where indicated on the drawings. Terminal size shall be appropriate for the size of the wiring to be connected. All conductor terminations shall be labeled and a drawing containing all conductors, their labels, their circuits and their interconnection shall be permanently mounted in the terminal cabinet. Minimum size is 6 inches x 6 inches.

2.10.1.3 Alarm Wiring

Signaling line circuits field wiring shall be stranded copper, No. 14 AWG size conductors at a minimum. Wire size shall be sufficient to prevent voltage drop problems. Circuits operating at 24 VDC shall not operate at less than 21.6 volts. Circuits operating at any other voltage shall not have a voltage drop exceeding 10 % of normal voltage- Power wiring, operating at 120 VAC minimum, shall be No. 12 AWG solid copper having similar insulation. Provide wiring in electrical metallic tubing in dry locations not enclosed in concrete or where not subject to mechanical damage. Provide rigid conduit in all other locations. Conceal conduit wherever practicable in existing construction. The use of flexible conduit not exceeding a six foot length shall be permitted in initiating device circuits. Run conduit or tubing concealed unless specifically shown otherwise on the drawings. Shielded wiring shall be utilized where recommended by the manufacturer. For shielded- wiring, the shield shall be grounded at only one point, which shall be in or adjacent to the FACP.

2.10.1.4 Conductor Terminations

Color coding is required for all circuits. Labeling of any circuit at terminal blocks in terminal cabinets, FACP, and remote fire alarm control unites shall be provided at each conductor connection. Each conductor or cable shall have a shrink-wrap label to provide a unique and specific designation.

2.10.1.5 Conductor Identification

All circuit conductors shall be identified within each enclosure where a tap, splice or termination is made. Conductor identification shall be by color-coding of wires. Coding shall be by types of device and zone. A typed directory with plastic cover, showing color code used shall be permanently attached to the inside cover of each new control panel. The color-coding shall also be indicated on the record drawings.

PART 3 EXECUTION

3.1 INSTALLATION

Equipment, materials, installation, workmanship inspection, and testing shall be done in accordance with NFPA 70, NFPA 72, NFPA 90A and as modified herein.

3.1.1 Installation of fire alarm initiating and indicating devices

a. FACP: Locate the FACP where indicated on the drawings. Surface mount the enclosure with the top of the cabinet 6 feet above the finished floor or center of the cabinet 5-1/2 feet, whichever is lower. All conductor termination shall be labeled and a drawings containing all conductors, their labels, their circuits and their interconnection shall be permanently mounted in the FACP.

b. Manual Stations Locate manual stations where shown on the drawings.

Mount stations so that their operating handles are 4.5 feet above the finished floor.

c. Notification Appliance Devices: Locate notification appliance devices where shown on the drawings. Mount assemblies on wall 80 inches above the finished floor or 6 inches below the ceiling whichever is lower. Ceiling mounted speakers shall conform to NFPA 72.

d. Smoke and Heat Detectors. Locate detectors on a 4 inch mounting box.

Detectors located on the ceiling shall be installed not less than 4 inches from the wall to the nearest edge. Those located on the wall shall have the top of the smoke detector at least 4 inches below the ceiling, but not more than 12 inches below the ceiling. In the case of solid joist construction, the detectors shall be Mounted on the bottom of the joists. Install smoke detectors no closer than 3 feet from air handling supply outlets, heat detectors shall be installed in strict accordance with their U.L. listing.

3.1.2 Power Supply for the System

NOTE: It is the responsibility of the designer to ensure that the source of power for the fire alarm system is shown on the drawings.

A single dedicated circuit connection for supplying power from a branch circuit to each building fire alarm system shall be provided. The power shall be supplied as shown on the drawings. The power supply shall be equipped with a locking mechanism and marked in red with the words "FIRE ALARM SYSTEM POWER".

3.1.3 WIRING AND RACEWAY

Wiring shall be in accordance with the requirements of NFPA 70 and NFPA 72. Wire for 120V circuits shall be No. 12 AWG minimum. Wiring shall be in conduit, electrical metallic tubing or surface mounted raceway. Conduit sizing shall be in accordance with the National Electrical Code. Concealed EMT shall be used in areas where lowered ceilings are installed and where new walls are being constructed. IMC shall be used out-of-doors or in wet locations. Surface mounted EMT painted to match the surface, or wire mold of the same color as the surface shall be used in all other areas. All exposed supporting hardware shall be painted to match the surface. Raceways shall be securely and rigidly fastened in place to the ceiling supports at intervals not more than 10 feet. Raceways and supporting hardware shall be supported from the actual ceiling or roof - not suspended on false ceilings. Fastenings shall be by wood screws to wood; by toggle bolts on hollow masonry units; by expansion bolts on concrete or brick; and by machine screws, welded threaded studs, heat-treated of spring-steel-tension clamps on steel work. Low voltage DC wiring shall be (90 degrees C), stranded copper, No. 14 AWG installed in conduit. Wires shall be connected directly to the alarm devices. The Contractor shall install "coaxial cable" from the transmitter to the new building antenna. All alarm device wiring shall be Class "A". All wiring shall test free of grounds or crosses between conductors before the control panel circuit boards are installed.

Wiring for the fire alarm system shall not be installed in conduits, junction boxes or outlet boxes with conductors of lighting and power systems. Not more than two conductors shall be installed under any device screw terminal. The wires under the screw terminal shall be straight when placed under the terminal then clamped in place under the screw terminal. The wires shall be broken and not twisted around the terminal. Circuit conductors entering or leaving any mounting box, outlet box enclosure or cabinet shall be connected to screw terminals with each terminal and conductor marked in accordance with the wiring diagram. Connections and splices shall be made using screw terminal blocks. The use of wire nut type connectors in the system is prohibited. Wiring within any control equipment shall be readily accessible without removing any component parts.

3.1.4 Control Panel

Locate the control panel where indicated on the drawings. The control panel and its assorted components shall be mounted so that no part of the enclosing cabinet is less than 12 inches or more than 78 inches above the finished floor. Manually operable controls shall be between 36 and 42 inches above the finished floor. All conductor termination shall be labeled and a drawings containing all conductors, their labels, their circuits and their interconnection shall be permanently mounted in the FACP. Panel shall be installed to comply with the requirements of UL 864.

3.1.5 Manual Stations

Locate manual stations where shown on the drawings. Mount stations so that their operating handles are 4.5 feet above the finished floor.

3.1.6 Detectors

Detectors shall be located and installed in accordance with NFPA 72. Detectors shall be connected into signal line circuits or initiating device circuits as indicated on the drawings. Detectors shall be at least 12 inches from any part of any lighting fixture. Detectors shall be located at least 3 feet from diffusers of air handling systems. Each detector shall be provided with appropriate mounting hardware as required by its mounting location. Detectors which mount in open space shall be mounted directly to the end of the stubbed down rigid conduit drop. Conduit drops shall be firmly secured to minimize detector sway. Where length of conduit drop from ceiling or wall surface exceeds 3 feet, sway bracing shall be provided. Detectors installed in concealed locations (above ceiling, raised floors, etc.) shall have a remote visible indicator LED/LCD.

3.1.7 Notification Appliances

Locate notification appliance devices where shown on the drawings. Notification appliances shall be mounted 80 inches above the finished floor or 6 inches below the ceiling, whichever is lower.

3.1.8 Annunciator Equipment

Annunciator equipment shall be mounted where indicated on the drawings.

3.2 OVERVOLTAGE AND SURGE PROTECTION

3.2.1 Power Line Surge Protection

All equipment connected to alternating current circuits shall be protected from surges per IEEE C62.41 B3 combination waveform and NFPA 70. Fuses shall not be used for surge protection. The surge protector shall be rated for a maximum let thru voltage of 350 Volts ac (line-to-neutral) and 350 Volt ac (neutral-to-ground).

3.2.2 Low Voltage DC Circuits Surge Protection

All [IDC] [IDC, NAC, and communication cables/conductors], except fiber optics, shall have surge protection installed at each point where it exits or enters a building. Equipment shall be protected from surges per IEEE C62.41 B3 combination waveform and NFPA 70. The surge protector shall be rated to protect the 24 Volt dc equipment. The maximum dc clamping voltages shall be 36 V (line-to-ground) and 72 Volt dc (line-to-line).

3.2.3 Signal Line Circuit Surge Protection

All SLC cables/conductors, except fiber optics, shall have surge protection/isolation circuits installed at each point where it exits or enters a building. The circuit shall be protected from surges per IEEE C62.41 B3 combination waveform and NFPA 70. The surge protector/isolator shall be rated to protect the equipment.

3.3 GROUNDING

Grounding shall be provided in accordance with NEC.

3.4 TESTING

The Contractor shall notify the Contracting Officer at least 10 days before the preliminary and acceptance tests are to be conducted. The tests shall be performed in the presence of the Contracting Officer’s representative. The control panel manufacturer's representative shall be present to supervise tests. The Contractor shall furnish instruments and personnel required for the tests. Any devices or components that fail the tests shall be replaced and reconnected by the Contractor at no cost to the Government.

3.4.1 Preliminary Testing

Contractor shall conduct the following tests during installation of wiring and system components. Any deficiency pertaining to these requirements shall be corrected by the Contractor prior to final acceptance testing of the system.

a. Megger Tests- After all wiring has been installed, and prior to making any connections to panels or devices, all wiring shall be megger tested for insulation resistance, grounds and/or shorts. Conductors with 300 volt rated insulation shall be tested at a minimum of 250 volt DC. Conductors with 600 volt rated insulation shall be tested at a minimum of 500 volt DC. Make ground resistance measurements in normally dry weather, not less than 48 hours after a rainfall. Resistance of each connection to ground shall not exceed 10 ohms. The tests shall be witnessed by the Contracting Officer’s representative and test results recorded for use at the final acceptance test.

b. Loop Resistance Tests- Measure and record the resistance of each circuit with each pair of conductors in the circuit short-circuited at the farthest point from the circuit origin. The tests shall be witnessed by the Contracting Officer and test results recorded for use the final acceptance test.

c. Operation of Entire System- Operate all initiating and indicating devices. If deficiencies are found, corrections shall be made and the system shall be retested to assure that it is functional. After completing the preliminary testing the Contractor shall complete and submit the NFPA 72, Certificate of Completion.

3.4.2 Acceptance Test

Acceptance testing shall not be performed until the Contractor has completed and submitted the Certificate of Completion. A final acceptance test shall not be scheduled until the O&M Manuals are provided to the Contracting Officer and the following are provided at the job site.

Provide the following:

1. Marked-up red line drawings of the system as actually installed.

2. Megger test results.

3. Loop resistance test results.

Testing shall be in accordance with NFPA 72. The recommended tests in NFPA 72 shall be considered mandatory and shall verify that previous deficiencies have been corrected. The Contractor shall complete and submit the NFPA 72, Inspection and Testing Form. The test shall include all requirements of NFPA 72 and the following:

a. Test of each function of the control panel.

b. Test of each circuit in both trouble and normal modes.

c. Tests of each alarm initiating devices in both normal and trouble conditions.

d. Tests of each control circuit and device.

e. Tests of each alarm notification appliance.

f. Tests of the battery charger and batteries.

g. Complete operational tests under emergency power supply.

h. Visual inspection of wiring connections.

i. Opening the circuit at each alarm initiating device and notification appliance to test the wiring supervisory feature.

j. Ground fault

k. Short circuit faults

l. Stray voltage

m. Loop resistance

3.5 TRAINING

Training course shall be provided for the operations and maintenance staff. The course shall be conducted in the building where the system is installed or as designated by the Contracting Officer. The training period for systems operation shall consist of 8 hours. The training period shall start after the system is functionally completed but prior to final acceptance tests. The instruction shall be given during regular working hours on such dates and times as are selected by the Contracting officer. The instruction may be divided into two or more periods at the discretion of the Contracting Officer. The instructions shall cover items contained in the operating and maintenance instructions. In addition, training shall be provided on performance of expansions or modifications to the fire detection and alarm system. These instructions shall be given by a NICET certified technician with recent factory certification (within 3 years).

3.6 Additional Requirements

The contractor shall provide the following additional services, equipment and software:

1. All tools, program software, computers, etc. needed in the programming and reprogramming the control panel.

2. All required software including licensing, for LAFB to reprogram the fire alarm system as they require.

3. Additional required hardware components (including remote keyboards/computers) to program the fire alarm system.

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