Attachment_11_-_LRAFB_Building_Mass_Notification_System.pdf

BUILDING MASS NOTIFICATION SYSTEM 27 51 16- 1

SECTION 27 51 16 – BUILDING MASS NOTIFICATION SYSTEM

PART 1 - GENERAL

1.01 WORK INCLUDED:

A. The Mass Notification System (MNS) shall be a complete operational system that is capable of providing real-time information via pre-recorded messages, tones, and live-voice transmissions to all building occupants and to personnel outside of building during emergency situations. The system shall provide sufficient speakers for personnel within these areas to discern the message transmitted. Strobes and displays shall be provided to annunciate the emergency condition to hearing impaired personnel. Individual Building MNS shall be monitored and controlled through the central control unit and shall be capable of local control. The Individual Building MNS shall be capable of receiving live-voice via radio with hardwire communication as a backup. Security provisions shall be made to prevent unauthorized live voice override.

B. The equipment shall be properly installed, completely interconnected, and placed in working order as herein described and as shown on the contract or delivery order Drawings.

The system shall provide an electrically supervised MNS as specifically listed below.

C. Operation of any automatic mass notification device or manual station shall result in the continuous sounding of all MNS audio/visual devices in the building.

D. Codes, Laws, and Regulations: Install all electrical work to comply with the requirements of the National Electrical Code, which shall serve as the minimum requirement. Where electrical work is indicated and/or specified in excess of these minimum requirements, install the work accordingly.

1.02 APPLICABLE PUBLICATIONS:

A. DEPARTMENT OF DEFENSE - DOD UFC 4-021-01 (Use latest editions) Design and O&M:

Mass Notification Systems

B. INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE) - IEEE C62.41

1991; R 1995) Surge Voltages in Low-Voltage AC Power Circuits (ANSI/IEEE)

C. NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA) - NEMA ICS 6

1993; R 2001) Industrial Control and Systems Enclosures

D. Factory Mutual System (FMS) Publication: (Use latest editions) Factory Mutual Approval Guide.

E. National Fire Protection Association (NFPA) Standards: (Use latest editions)

1. No. 70 National Electrical Code

2. No. 72 National Fire Alarm Code

F. Underwriters’ Laboratories, Inc. (UL) Publication: (Use latest editions)

1. Fire Protection Equipment List, Standard 864.

2. Grounding and Bonding Equipment, Standard 467

1.03 MATERIAL AND EQUIPMENT:

A. In addition to all requirements specified herein, each material and equipment item shall have all features as standard with its manufacturer and/or as required for the complete operational system. Where two or more pieces of equipment must perform the same

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functions, they shall be duplicates produced by one manufacturer. The name of the manufacturer and the serial numbers shall appear on all major components. Locks for all cabinets shall be keyed alike. Equipment added to an existing system shall function in the same manner as similar components of the existing system.

B. Capacities, ratings, sizes, and other requirements not specified hereinafter shall be as scheduled or otherwise indicated on the Drawings. All materials and equipment shall be new unless noted on plans.

C. All materials and equipment shall conform to the requirements of the UL for mass notification systems of the type indicated. The contractor’s submittals shall supply proof that the items furnished under this specification conform to these requirements.

D. Interface with Base Wide Area MNS – (Not Applicable) The individual building MNS shall be capable of interoperations with the base wide area MNS. The electrical requirements, computer codes or other protocols that are required to interface the systems shall be provided to the base. At a minimum, the interface shall be able to provide the individual building MNS with an audio line level input and be able to active all prerecorded messages.

E. The individual building MNS Autonomous Control Unit (ACU) shall be a combination unit with the buildings Fire Alarm Control Panel wherever both are being installed under the same contract.

1.04 QUALITY ASSURANCE

A. Design drawings, shop drawings and as-built drawings shall be prepared by, or under the supervision of a qualified Fire Protection Engineer (FPE). The engineer shall have at least a Bachelor of Science degree in Engineering from an accredited university engineering program plus a minimum of 4 years work experience in engineering related to fire alarm systems or individual building mass notification systems. Contractor shall submit data showing the names and certification of the technician or engineer when drawings are submitted. All submittals, including shop drawings, shall be reviewed and sealed by the FPE before submittal to LRAFB. See UFC 3-600-01 for all requirements.

B. Installers: Provide the services of a qualified manufacturer's representative or technician, experienced in the installation and operation of the type of system being provided to supervise the installation, testing (including final testing), and adjustment of the system.

C. Installation Supervisors: Submit names of personnel who will supervise installation and testing of the system, and who will provide instruction to government personnel, along with the manufacturer's certification of the qualifications of the named supervisors. The individual supervising the installation shall be certified NICET Level III or higher in low voltage electronic-communications systems or in fire alarm systems.

D. Regulatory Requirements: Mass Notification Systems shall be installed in buildings as specified in UFC 4-021-01.

1.05 SUBMITTALS:

A. Submit one master set of product brochures/data completely describing all items of equipment corresponding to each item required for a complete system.

B. OPERATION AND MAINTENANCE MANUALS: The Contractor shall furnish four (4) copies of Operation and Maintenance Manuals with items 1 & 2 at the beginning of the contract for each type or style of panel to be supplied. For each Delivery Order, one Operation and Maintenance Manual unique to the installation shall be given to CE Alarm Shop at least one week before pre-final inspection. The Delivery Order manual shall not contain items 1 and 2.

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Manuals shall be in booklet form with binder, Table of Contents, tab dividers and shall be arranged in section as required. Manuals shall contain, as a minimum:

1. Complete instructions for the operation of the system including all programming operations.

2. Complete instructions for inspection, testing, trouble shooting and maintenance of the system. Include a guide listing troubles, possible causes and corrective actions.

3. Complete wiring schematics and diagrams (see paragraph F below).

4. As-built drawings.

5. Power Supply & Battery calculations (see paragraph C below).

6. Certificate of Warranty.

C. Submit power supply and battery calculations for each DO. Calculations shall show the sufficiency of proposed power supply and battery, or existing battery with system changes.

If a new battery is being installed, submit along with battery submittal.

D. Submit shop drawings indicating locations of all mass notification equipment. Drawings shall be 1/8 inch or ¼ inch scale and shall indicate by number the speakers and strobes in the exact sequence in which installation in the circuit is proposed.

E. Submit manufacturer’s installation instructions.

F. Submit wiring diagrams and schematics. The Contractor shall design the complete MNS based on actual equipment he intends to use.

1. Complete plans will be furnished at time of initial submittal required by Section 01300.

2. Accurate updated “contractor revised” plans will be furnished two weeks before pre-final inspection.

3. Upon completion of construction, the contractor shall update government furnished AutoCAD drawing files with as-built information and digitally stamp these drawings as “as-built”. A copy of the drawing files associated with the MNS shall be turned over to the Alarm Shop on compact disk (CD) prior to final inspection.

G. Submit training session lesson plan (see Section 1.06 C) and all instruction materials for review and approval at the beginning of the contract. The Contractor shall schedule training on each type of panel/equipment once a year for the life of the contract by written request at least two weeks prior to the proposed date of training.

1.06 FACTORY TRAINED TECHNICIANS

The Contractor shall provide a factory trained technical representative of the manufacturer.

This representative shall perform the following:

A. Directly supervise the final connection of the system.

B. Thoroughly inspect the complete system including all components and certify in writing that the following requirements are satisfied:

1. Complete and functional system.

2. Compliant with UL and FM requirements.

3. Installation in accordance with manufacturer’s recommendations.

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4. Adherence to regulations covering supervision of components on completion of contract or acceptance of building.

C. Conduct two separate classes on separate days, each consisting of two, two-hour sessions. The training shall be specific to the system installed including detailed discussion on the panel, panel programming and operation, panel wiring schematics and system wiring diagrams. Each student shall receive copies of all training materials including as-built wiring and schematic diagrams. A proposed lesson plan is available upon request.

1. SESSION 1 of each class shall cover:

a. Theory of operation.

b. Detailed explanations of all circuit cards and their functions.

c. Schematics of entire panel including zoning devices, signal cards, power supply and transmitter.

2. SESSION 2 of each class shall cover: Troubleshooting and repair procedures for all equipment including demonstrations, teaching materials, computer software and programming and editing of system setup, and hands-on training.

1.07 ACCURACY OF DATA AND DRAWINGS; INTERFERENCES, EQUIPMENT

INSTALLATION:

A. The Mass Notification drawings are generally diagrammatic, and except where specifically dimensioned or detailed, indicate the approximate locations and general arrangement of the work. Examine carefully all contract drawings for installation of MNS devices and coordination with all other work, avoid all interference therewith, and to meet the manufacturer’s limitations. The MNS shall comply with the NFPA standards and design per Paragraph 1.05 F of this section and approved by the Contracting Officer or his designated representative before construction commences.

B. All interference or discrepancies, which may be discovered or anticipated, shall be reported promptly to the Contracting Officer for decision before proceeding with the work.

C. Install each item of equipment in accordance with its manufacturer’s recommendations, and as indicated on the Drawings, and/or specified. Where there is a discrepancy, the manufacturer’s recommendations shall be followed with the exception of wire size. Wire shall be at least 18AWG cable in conduit. When the MNS is completely installed, the manufacturer’s representative shall check entire system installation and operation, and submit a letter of certification to the Contracting Officer before final inspection.

1.08 CONTRACTOR REVISED DRAWINGS:

The Contractor shall furnish completed and corrected “contractor revised” drawings.

Drawings shall show by number, the enunciators in the exact sequence in which they are installed on the circuit. Drawings shall also show the exact wiring diagram and termination of all wiring and jumpers installed in panel, and the location of all devices, conduit runs and zone panels. Drawings shall have the Contracting Officer’s signature on all “contractor revised” drawings (see Division 1). Contractor shall also furnish one framed laminated plastic copy of a “Building Floor Plan” showing all devices installed and zone layout.

Contractor shall install the framed drawing on the wall adjacent to the Mass Notification panel before the final inspection. Actual size of framed prints shall be verified with the Contracting Officer.

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1.09 TOOLS AND SPARE PARTS:

Special tools necessary for the maintenance of the equipment shall be furnished. One spare set of fuses of each type and size required, and 2 percent of the total number of each type of detector, but no less than two (2) thereof, shall be furnished. Furnish one spare plug in zone card and one initiating circuit module. Any spare parts normally furnished by the manufacturer as part of the equipment package shall be furnished.

1.10 Software and Programming Codes:

If manufacturer’s literature indicates computer software is available for use with the system, provide all software for the system. All programming codes, software or hardware keys, or passwords required to access, update, modify and maintain the ACU shall be provided to Little Rock AFB alarm shop. If the manufacturer requires an individual to be trained before this information can be provided the Contractor shall provide the required training at no additional cost to the Government.

1.11 CIRCUIT CLASSIFICATION:

All circuits shall be class A with no T-Taps allowed. The return wires from furthest device in the circuit shall be in a separate conduit at least six feet away from the outgoing circuit wires (except within 6 feet of the control panel or as allowed by the NFPA.) NAC circuits shall be style Z. All NAC, Speaker and Local Operating Console (LOC) connecting cables shall be monitored for integrity.

PART 2 - PRODUCTS

2.01 GENERAL PRODUCT REQUIREMENTS

A. Enclosure - The enclosure shall be fabricated from sheet steel conforming, as a minimum, to NEMA ICS 6 NEMA standard 1 for indoor locations. Provisions shall be made for conduit (minimum 3/4 inch) entry and attachment to no fewer than two places on the housing. The enclosure shall be corrosion-resistant and sealed against the entry of dust, dirt, insects, and other foreign objects. All enclosures with locks shall be keyed alike.

B. Nameplates - Major components of equipment shall have the manufacturer's name, catalog number, and technical data as applicable on a non-corrosive and non-heat sensitive label affixed to the equipment.

C. Tags - Keys will be tagged or stamped with identification numbers. Any other critical electrical information will be identified with tags.

D. Verification of Dimensions - The Contractor shall become familiar with all details of the work, verify all dimensions in the field, and shall advise the Contracting Officer of any discrepancy before performing the work.

E. COTS - Installed systems shall consist of Commercial, off-the-shelf units and shall be proven to meet the standards of Underwriters Laboratories or Factory Mutual.

F. Backup Power - Installed systems shall be provided with a secondary (standby) power for all loads.

G. Power Supplies - Power supplies shall be capable of accepting 120/208 alternating current (VAC); 60 Hz.

H. Transceiver – Provide transceiver compatible with LRAFB Giant Voice system. Connect to ACU and test for proper operation.

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I. Antenna Systems - MNS equipment that communicates via radio shall be provided with an antenna system consisting of an antenna, a coaxial static discharge unit, and an antenna grounding system. The antennas shall be omni-directional or directional, as appropriate, minimum 3dB gain, vertically polarized and shall be provided with all necessary mounting brackets and supports for installation. The antennas shall be installed with a 36-inch minimum vertical separation from the installed unit and shall be located well away from overhead power circuits. Antennas shall be installed and grounded in accordance with the applicable portions of NFPA 70 Antenna supporting structures shall comply with applicable portions of EIA 222-E. Antennas for remote transceivers shall be vertically polarized with a driving point impedance of 50 ohms. All antennas shall be installed external to buildings and shall be located in accordance with manufacturer recommendations.

1. Antenna Frequency Requirement – Antennas shall be adjusted or designed to operate on the specified radio frequency.

2. Environmental Requirements - All complete antenna assemblies shall be of corrosion-resistant materials and designed for reliable operation under adverse conditions including 100-mph winds, ice, snow, and rain.

3. Antenna Cables - Coaxial cables shall be 50 ohm RG type (or equivalent) with minimum 95% shield and shall include PL and BNC type fittings or connectors as appropriate.

J. Grounding of Antenna Systems - Antenna masts and static discharge unit ground terminals shall be grounded in accordance with the requirements of NFPA 70, Article 810-21 and the manufacturer's instructions. Static discharge units and their enclosures shall be located inside the buildings as close as practical to the antenna lead-in point of entry. Ground rods shall be used and be bonded to the buildings grounding electrode system. Ground rods shall be of copper-clad steel conforming to UL 4561 not less than 5/8 inch in diameter by ten feet in length. Ground rods shall not protrude more than six inches above grade. Non-current-carrying metallic parts associated with mass notification equipment shall have maximum resistance to solid earth ground not to exceed the following values:

1. Antennas/static discharge units 10 ohms

2. Radio alarm transceivers 10 ohms

K. Electrical Supervision - The Central Control Unit shall continuously poll connected equipment so that it can detect and report on the status of the building MNS.

2.02 INDIVIDUAL BUILDING MNS

A. Autonomous Control Unit (ACU) - An ACU shall be installed in each facility or building as indicated on the contract or delivery order drawings. Control units shall be provided by Monaco Enterprises, Inc., Wheelock Safepath or government approved equal. Units shall meet these requirements:

1. ACU shall be able to function independently upon failure of the base wide MNS.

2. ACU shall be a listed combination system with the fire alarm system as described in NFPA 72 and meeting UL Standard 864 and the specific requirements of UFC 4-021-01.

3. ACU shall be able to activate strobes – Energize either the white/clear fire alarm strobe lights or the amber MNS strobe lights as appropriate for the emergency.

4. ACU shall be available for use for general paging or other non-emergency messages without the activation of strobes.

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5. ACU shall be able to interrupt public address system announcements and to silence building background music while delivering MNS voice messages.

6. Conductor connections shall comply with NFPA 72. Use of Ethernet or Internet Protocol (IP) does not meet NFPA 72 requirements.

7. ACU shall be able to switch between MNS and fire alarm notification functions without generating trouble alarms in either system.

8. ACU shall have the capacity for 8 prerecorded messages. Prerecorded messages shall be in English. These messages can include tones followed by a voice message that shall be automatically repeated until terminated by the Central Control Unit operator, at the Autonomous Control Unit, or until the 10 minute timeout period is reached. Prerecorded messages shall, as a minimum, address the following:

a. Bomb threat or actual bomb within/around the building.

b. Intruder/hostile person sighted within/around the building.

c. Occupants directed to take cover within the building.

d. Evacuation of the building using exits other than the normal main entrance/exit.

e. Emergency weather conditions; severe storm warning, tornado warning.

f. “All Clear” message

g. A test message intended for verifying functionality of the system.

9. ACU shall have the ability to deliver messages quickly and repeat prerecorded messages until terminated.

10. ACU shall be capable of playing live-voice messages sent from the Central Control Unit or from an on-board microphone or from a remote microphone in the LOC.

11. ACU shall have adequate discrete outputs to initiate text signs and strobes.

12. ACU interfaces with the LOC for initiating prerecorded messages and delivering live voice messages from locations in the building other than at the ACU. CU establishes priority for passing messages to prevent interference between the ACU, LOC and the wide area

MNS.

13. ACU temporarily overrides fire alarm audible messages during simultaneous fire and mass notification events. All other features of the fire alarm system, including the transmission of signals to the fire department shall function normally. MNS messages shall take priority and continue to override the fire alarm audible for the sooner of 10 minutes or until the MNS message is manually ended.

14. ACU shall provide a supervisory signal if the MNS overrides the fire alarm audible messages. The supervisory signal shall be annunciated at the FACP and any remote alarm annunciators and be transmitted to the fire department. The visual annunciation of the separate supervisory signal shall be distinctly labeled or otherwise clearly identified. This signal shall be separate from any other fire alarm supervisory signal.

15. ACU shall provide a supervisory signal if the MNS functions have been temporarily disabled during simultaneous fire and MNS events. The supervisory signal shall be annunciated at the FACP and any remote alarm annunciators, LOC, central control units of

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the base Wide Area MNS and be transmitted to the fire department. The visual annunciation of the separate supervisory signal shall be distinctly labeled or otherwise clearly identified.

16. ACU shall provide a single switch or operating mechanism capable of shutdown of all heating, ventilating, air conditioning (HVAC) equipment in the facility in accordance with UFC 4-010-01. This shutdown capability shall be provided at the LOC or be provided at a location readily accessible to the building occupants. See the delivery order drawings for the required location.

17. Switches and other controls shall not be accessible without the use of a key.

18. Power Requirements - Each ACU shall be powered by a combination of locally available 120 VAC power and spill-proof, sealed lead acid or lead calcium battery requiring no addition of water or electrolyte. Operating power shall be obtained from a single connection to a dedicated, fused branch circuit of the building's regular 60 Hz ac service. In the event of loss of ac power, the ACU shall automatically and instantaneously switch to a secondary power source. Loss of ac power shall also activate an indicator and cause an ac failure message to be transmitted if power is not restored within 60 seconds. Power supply filtering shall prevent nuisance message transmissions caused by transient or steady state electrical disturbances. Upon restoration of ac power, transfer back to ac operation shall be automatic. Depending upon backup battery requirements, the battery and converter/battery charger can be installed within the unit housing or can be in a separate enclosure. The battery shall be capable of supplying all power requirements of unit and connected devices.

a. Standby battery capacity –

i. Immediately upon loss of normal AC power, the standby source of power shall provide a minimum of 60 minutes of mass notification at maximum connected load. On standby power the mass notification strobes and prerecorded messages shall automatically turn off after 10 minutes of operation but may be manually reinitiated for subsequent periods of 10 minutes each.

ii. Standby power source shall provide sufficient power to operate the unit in normal standby status for 24 hours, shall support an alarm condition for 15 minutes, and shall be capable of initiating a message the end of the period.

19. Channels and Amplifier Power - The Autonomous Control Unit shall provide adequate channels and amplification power to meet intelligibility requirements as specified in these specifications.

20. Supervision and Diagnostics - The ACU shall be completely ‘self-diagnostic’ and shall display this diagnostic information locally on an LCD display. Unit shall provide a 500 event history log file that can also be displayed locally. As a minimum, the unit shall report the following:

a. Controller unit (main control board) malfunctions

b. Amplifier shall be supervised for proper operation/malfunctions that would prevent intelligible communications.

c. Audio NAC wiring shall be supervised for open and short conditions.

d. Strobe NAC wiring shall be supervised for open and short conditions

e. Local Operating Console(s) (LOC) wiring shall be supervised for open and short conditions

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f. Self amplified power output circuit wiring shall be supervised for open and short conditions.

g. Microphone shall be supervised for an open condition.

h. Input voltage and battery voltage shall be supervised. A battery fault message shall be transmitted upon disconnection or removal of the battery supply or low battery voltage. A fault (trouble) message shall be sent upon loss of AC power for more than 60 seconds.

i. LOC station(s) shall be supervised.

Any supervision loss shall be noted through the sounding of a built-in audible alert and shall signal this condition to the Autonomous Control Unit Transceiver, which will transmit that information to the Central Control Unit.

B. Local Operating Console (LOC) – As a minimum, the LOC shall provide the following features:

1. The LOC shall have a remote microphone station that emulates operation of the MNS from the ACU.

2. The LOC station shall also provide activation switches to manually activate pre-recorded messages and tones that are resident on the ACU. Signage shall be provided to allow rapid recognition of means of initiation of the prerecorded messages.

3. LOC shall provide a single switch or operating mechanism capable of shutdown of all heating, ventilating, air conditioning (HVAC) equipment in the facility in accordance with UFC 4-010-01. If multiple LOC locations are shown on the drawings, this function need only be provided at the designated location on the drawings.

4. The LOC enclosures –Means shall be provided to minimize the potential for tampering with the LOC. Enclosures that can only be opened by a key are not acceptable.

5. Provide signage on the front cover of the enclosure stating “Building Mass Notification System and HVAC Emergency Shutdown”.

C. Notification Appliance Network

1. Notification Appliances - Notification appliances shall be located in accordance with NFPA 72 notification appliance placement standards.

2. Displays –

a. Displays shall be suitable for installation in commercial and industrial applications with consideration of electrically hazardous (classified) locations and suitable for the intended climatic and environmental conditions.

b. Display options shall satisfy all Uniform Federal Accessibility Standards (UFAS) and Americans with Disabilities Act Accessibility Guidelines (ADA).

c. Displays shall be placed as indicated on the contract drawings.

3. Speakers –

a. shall be suitable for installation in commercial and industrial applications with consideration of electrically hazardous (classified) locations and suitable for the intended climatic and environmental conditions.

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b. As a minimum, speakers shall be placed as indicated on the contract drawings. Additional speakers will be added as required to meet the minimum intelligibility requirements.

i. Provide speakers at all locations inside the building where the building fire alarm must be audible.

ii. Provide speakers mounted on the exterior of the building to provide notification of any areas commonly used by building occupants. These include courtyards, covered break areas, designated smoking areas and sidewalks leading to and from the building.

c. Speakers shall meet UL Standard 1480 5 th edition. Interior speakers should be rated for 8 to 10 watts and shall have field adjustable volume settings.

Adjustment shall be by transformer power tap. They shall have a minimum frequency response of 200 Hz to 10,000 Hz at +/- 5 db.

4. Strobes –

a. Sync-Rated Strobes - Sync-rated strobes shall be used to alert the hearing-impaired.

b. Strobes shall meet strobe visibility and synchronization requirements listed in

NFPA 72.

c. Strobes shall meet the listing requirements of UL Standard 1971.

d. Strobe Marking - Strobes used for mass notification shall be marked “ALERT”. Strobes shall be amber in color

e. Strobes shall be mounted separately from the speakers so that they do not interfere with the speakers sound distribution

f. Strobes shall operate during the delivery of all prerecorded messages for the duration of the message.

g. Strobes shall operate during the delivery of all live emergency messages for the duration of the message and for 15 seconds thereafter

h. Fire alarm strobes shall not operate while amber strobes are in operation but otherwise shall operate continuously until the fire alarm system is reset.

5. Textual Display for Hearing-Impaired Personnel - Textual displays shall be provided for notification of the emergency for hearing-impaired personnel when required by the contract or delivery order drawings.

6. SCIF Speakers - Speakers shall be installed within SCIFs compliant with Director of Central Intelligence Directive DCID 1/21), Manual for Physical Security Standards for Sensitive Compartmented Information Facilities.

7. Provide speaker volume controls as shown on the contract or delivery order drawings.

Provide override feature to insure that prerecorded and live emergency messages can be heard regardless of the volume setting.

D. ACU Transceiver –

1. The transceivers shall be a commercial product completely assembled, wired, and tested at the factory and delivered ready for installation and operation. Transceivers shall be provided by Monaco Enterprises inc. Provide all ancillary equipment required for a

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completely integrated system. Provide the following list of equipment and properly integrate it with the ACU:

a. VHF radio transceiver/FSK Encoder/Decoder, compatible with LRAFB giant voice system.

2. Electronics Package - The transceivers' electronics package shall be incorporated within a rugged physical housing as an integral, removable assembly to facilitate testing, servicing, and replacement.

3. Interface to Autonomous Control Unit - The transceiver shall connect to the ACU through one of the transceiver's on-board RS-232, open collector, or isolated dry contact outputs to initiate prerecorded messages that reside in the ACU. The transceiver shall connect to the microphone input of the ACU to transmit live voice messages. The ACU Transceiver shall provide electrically supervised connections to the ACU.

4. Operation - The transceivers shall immediately transmit all initiated signals from the Central Control Unit to the ACU and shall respond to commands and polls from the Central Control Unit.

5. Protected Indicators and Controls - All indicators and pushbutton switches shall be located inside the transceiver enclosure and shall be protected from unauthorized use by a key lock and an enclosure tamper switch.

6. Power Sources and Switchover to Backup – In addition to the same requirements of the ACU, the transceiver power supply shall be provided with suitable transient protection that meets the requirements of ANSI C 62.41.

7. Response to Commands from the Central Control Unit - The transceivers shall respond to the Central Control Unit commands as follows:

a. Polling Response: The transceivers are monitored for communication, unit, and zone status.

b. Status Change Reporting: The Autonomous Control Unit Transceiver shall report exception changes. Status changes are reported within 90 seconds.

c. Download Zone State to Autonomous Control Unit Transceiver: The Central Control Unit shall be capable of transmitting the configuration to the transceivers after transceiver information is saved.

PART 3 - EXECUTION

3.01 INSTALLATION:

System components shall be securely fastened to their support independently of the wiring.

Runs of conduit, wire and cable shall be straight, neatly arranged, properly supported, and parallel or perpendicular to walls and partitions. Junction boxes shall be painted blue and shall be accessible for proper inspection and troubleshooting. Installation of wiring shall conform to NFPA Standard No. 70.

3.02 WIRING:

A. The contractor shall furnish and install, in accordance with the manufacturer’s instructions, all wiring, conduit and outlet boxes required to complete the system as described herein and as shown on the plans. All wiring shall be in conduit/raceway and shall comply with the requirements of applicable sections of Division 16 herein and the National Electrical Code.

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B. Wire size shall be as specified by the equipment manufacturer but in no case smaller than 18AWG. Surface mounted conduit is allowed only in Mechanical Rooms. Use surface metal raceway equal to Wiremold or Walker Duct only where indicated on drawings. All surface metal raceway shall be painted to match wall finish as directed by the Contracting Officer.

3.03 NOTIFICATION EQUIPMENT:

A. Locate audio/visual devices and manual boxes approximately as shown on the approved shop drawings.

B. Mount alarm audio/visual devices 80 inches above the finished floor or 6 inches below the bottom surface of the ceiling, whichever is lower.

C. Mount manual activation stations so that top of the box is exactly 54 inches above finish floor.

3.04 FIRE WALLS:

Seal around all conduits passing through fire walls with rated fire stop material. See section 07547 – Fire Stops.

3.05 REPAIR OF EXISTING WORK:

The work shall be carefully laid out in advance. Cutting, channeling, chasing, or drilling of floors, walls, partitions, ceilings or other surfaces necessary for the proper installation, support or anchorage of the conduit or other work shall be carefully done. Damage to buildings, piping, or equipment shall be repaired and refinished by skilled mechanics of the trades involved at no cost to the Government.

3.06 TESTING:

A. After complete installation of the equipment, and at the time as directed by the Contracting Officer, the Contractor shall conduct tests to demonstrate that operating and installation requirements of this specification have been met. Test shall be witnessed by and coordinated with the alarm shop

B. Intelligibility testing –

1. Verify by measurement that the speaker system meets a minimum intelligibility of 0.8 on the common intelligibility scale (CIS) in each area where building occupants normally could be found. Areas of the building, such as mechanical and electrical rooms, where occupants are not expected to normally be may have a score less than 0.8 if personnel can determine that a voice signal is being broadcast and they could walk less than 10 meters to find a location with at least 0.8 CIS

2. Measurements shall be taken near the head level applicable for most personnel in the space under normal conditions (Standing, sitting, sleeping etc as appropriate).

3. Commercially available test instrumentation shall be used to measure intelligibility as specified by International Electrotechnical Commission (IEC) 60849, Second edition: 1998, Sound Systems for Emergency Purposes, and IEC 60268, Part 16, The Objective Rating of Speech Intelligibility by Speech Transmission Index.

END OF SECTION – BUILDING MASS NOTIFICATION SYSTEM