36C25622R0094 283100 Fire Detection and Alarm .doc

REPLACE AHU #104 AND DUCTWORK BLDG. 7

DEPARTMENT OF VETERANS AFFAIRS HEALTH CARE SYSTEM-ALEXANDRIA, LA

PROJECT NO.: 502-19-107

SECTION 28 31 00

FIRE DETECTION AND ALARM

PART 1 - GENERAL

1.1 DESCRIPTION

A.

This section of the specifications includes the furnishing, installation, and reconnection of the existing fire alarm equipment to form a complete coordinated system ready for operation. It shall include, but not be limited to existing alarm notification appliances new duct detectors, and wiring as shown on the drawings and specified. The fire alarm system shall not be combined with other systems such as building automation, energy management , etc.

B.

Fire alarm systems shall comply with requirements of the most recent VA FIRE PROTECTION DESIGN MANUAL and NFPA 72 unless variations to NFPA 72 are specifically identified within these contract documents by the following notation: "variation". The design, system layout, document submittal preparation, and supervision of installation and testing shall be provided by a technician that is certified NICET level III or a registered fire protection engineer. The NICET certified technician shall be on site for the supervision and testing of the system. Factory engineers from the equipment manufacturer, thoroughly familiar and knowledgeable with all equipment utilized, shall provide additional technical support at the site as required by the COR or his authorized representative. Installers shall have a minimum of 2 years’ experience installing fire alarm systems and be familiar with the existing facility system and sequence of operation. Only the existing systems manufacturer’s representative shall be allowed to work on, install, program, and test this system. A pre-construction test shall be performed on all devices within the affected areas of work. Once construction is completed, a final test shall be performed.

1.2 SCOPE

A.

The basement area of work contains existing alarm initiated and notification appliances that are to be disconnected along with the ceiling grid removal and reprogramming the system for the duration of the project. These devices are to be stored while demolition work is ongoing and then returned to service in their previous position once the ceiling grid is restored. Duct Smoke detection is also to be replaced and new duct smoke detectors added for the smoke damper installations. These devices are to be connected and/or reconnected to the existing Fire Alarm Control Panel in the facility. All new duct smoke detection shall be compatible with and match the existing system devices and operations. All existing system sequence of operation shall be maintained and extended to include the new duct smoke detection. New and/or revised control requirements shall be programmed by the existing manufacturer’s representative. The continuity of the fire alarm system shall be maintained throughout the renovation work being done and placed back in full operation including existing and new devices.

B. All existing fire alarm wiring and conduit not reused shall be removed.

C.

Existing reused equipment shall be covered as new equipment under the Warranty specified herein.

1.3 RELATED WORK

A. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

Requirements for procedures for submittals.

B.

Section 07 84 00 - FIRESTOPPING. Requirements for fire proofing wall penetrations.

C.

Section 26 05 19, LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES: Cables and wiring.

D.

Section 26 05 26, GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS: Requirements for personnel safety and to provide a low impedance path to ground for possible ground fault currents.

E.

Section 26 05 33, RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS: Conduit and boxes.

F.

Section 28 05 00 – COMMON WORK RESULTS FOR ELECTRONIC SAFETY AND SECURITY. Requirements for general requirements that are common to more than one section in Division 28.

G.

Section 28 08 00, COMMISIONING OF ELECTRONIC SAFETY AND SECURITY SYSTEMS. Requirements for commissioning - systems readiness checklists, and training.

1.4 SUBMITTALS

A.

General: Submit 5 copies in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES, and Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS.

B.

Drawings:

1.

Prepare drawings using AutoCAD Release 14 software and include all contractors information. Layering shall be by VA criteria as provided by the Contracting Officer’s Technical Representative (COTR). Bid drawing files on AutoCAD will be provided to the Contractor at the pre-construction meeting. The contractor shall be responsible for verifying all critical dimensions shown on the drawings provided by VA.

2.

Floor plans: Provide locations of all devices (with device number at each addressable device corresponding to control unit programming), appliances, panels, equipment, junction/terminal cabinets/boxes, risers, electrical power connections, individual circuits and raceway routing, system zoning; number, size, and type of raceways and conductors in each raceway; conduit fill calculations with cross section area percent fill for each type and size of conductor and raceway. Only those devices connected and incorporated into the final system shall be on these floor plans. Do not show any removed devices on the floor plans.

3.

Detailed wiring diagrams: Provide for all new devices including but not limited to duct smoke detection, addressable relay modules, 120-volt relays, monitoring modules and all reinstalled alarm initiated and notification devices in the basement area. Diagrams shall be drawn to a scale sufficient to show spatial relationships between components, enclosures and equipment configuration.

4.

Two weeks prior to final inspection, the Contractor shall deliver to the COTR 3 sets of as-built drawings and one set of the as-built drawing computer files (using AutoCAD 2007 or later). As‑built drawings (floor plans) shall show all new and/or existing conduit used for the fire alarm system.

C.

Certifications:

1.

Together with the shop drawing submittal, submit the technician's NICET level III fire alarm certification as well as certification from the existing control unit manufacturer that the proposed performer of contract maintenance is an authorized representative of the major equipment manufacturer. Include in the certification the names and addresses of the proposed supervisor of installation and the proposed performer of contract maintenance. Also include the name and title of the manufacturer’s representative who makes the certification.

2.

Together with the shop drawing submittal, submit a certification from either the existing control unit manufacturer or the manufacturer of each component (e.g., duct smoke detector) that the components being furnished are compatible with the existing control unit and that sufficient power and zone availability to support the system extension is existing.

3.

Together with the shop drawing submittal, submit a certification from the major equipment manufacturer that the wiring and connection diagrams meet this specification, UL and NFPA 72 requirements.

1.5 Warranty

All work performed and all new material and equipment furnished under this contract shall be free from defects and shall remain so for a period of one year from the date of acceptance of the entire installation by the Contracting Officer.

1.6 GUARANTY PERIOD SERVICES

A.

Complete inspection, testing, maintenance and repair service for the fire alarm system shall be provided by a factory trained authorized representative of the manufacturer of the major equipment for a period of 1 year from the date of acceptance of the new installation by the Contracting Officer.

B.

Contractor shall provide all necessary test equipment, parts and labor to perform required inspection, testing, maintenance and repair.

C.

All inspection, testing, maintenance and permanent records required by NFPA 72, and recommended by the equipment manufacturer shall be provided by the contractor.

1.7 APPLICABLE PUBLICATIONS

A.

The publications listed below (including amendments, addenda, revisions, supplements and errata) form a part of this specification to the extent referenced. The publications are referenced in text by the basic designation only and the latest editions of these publications shall be applicable.

B.

National Fire Protection Association (NFPA):

NFPA 70

National Electrical Code (NEC), 2020 edition

NFPA 72

National Fire Alarm Code, 2022 edition

NFPA 90A

Standard for the Installation of Air Conditioning and Ventilating Systems, 2021 edition

NFPA 101

Life Safety Code, 2021 edition C.

Underwriters Laboratories, Inc. (UL): Fire Protection Equipment Directory

D.

Factory Mutual Research Corp (FM): Approval Guide, 2007-2011 E.

American National Standards Institute (ANSI):

S3.41 Audible Emergency Evacuation Signal, 2015 edition F.

International Code Council, International Building Code (IBC), 2021 edition

PART 2 - PRODUCTS

2.1 EQUIPMENT AND MATERIALS, GENERAL

A.

All equipment and components shall be new and the manufacturer's current model. All equipment shall be tested and listed by Underwriters Laboratories, Inc. or Factory Mutual Research Corporation for use as new devices connected to an existing fire alarm system. The authorized representative of the manufacturer of the existing equipment shall certify that all new device and wiring installation complies with all manufacturers’ requirements and that satisfactory total system operation has been achieved.

2.2 CONDUIT, BOXES, AND WIRE

A.

Conduit shall be in accordance with Section 26 05 33, RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS: Conduit and boxes. and as follows:

1.

All new conduits shall be installed in accordance with NFPA 70.

2.

Conduit fill shall not exceed 40 percent of interior cross sectional area.

3.

All new conduits shall be 3/4 inch (19 mm) minimum.

B.

Wire:

1.

Wiring shall be in accordance with NEC article 760, and as recommended by the manufacturer of the fire alarm system. All wires shall be color coded. Number and size of conductors shall be as recommended by the fire alarm system manufacturer, but not less than 18 AWG for initiating device circuits and 14 AWG for notification device circuits.

2.

Addressable circuits and wiring used for the multiplex communication loop shall be twisted and shielded unless specifically excepted by the fire alarm equipment manufacturer in writing.

3.

Any fire alarm system wiring that extends outside of a building shall have additional power surge protection to protect equipment from physical damage and false signals due to lightning, voltage and current induced transients. Protection devices shall be shown on the submittal drawings and shall be UL listed or in accordance with written manufacturer's requirements.

4.

All wire or cable used in underground conduits including those in concrete shall be listed for wet locations.

C.

Terminal Boxes, Junction Boxes, and Cabinets:

1.

Shall be galvanized steel in accordance with UL requirements.

2.

All boxes shall be sized and installed in accordance with NFPA 70.

3.

Covers shall be repainted red in accordance with Section 09 91 00, PAINTING and shall be identified with white markings as "FA" for junction boxes and as "FIRE ALARM SYSTEM" for cabinets and terminal boxes. Lettering shall be a minimum of 3/4 inch (19 mm) high.

4.

Terminal boxes and cabinets shall have a volume 50 percent greater than required by the NFPA 70. Minimum sized wire shall be considered as 14 AWG for calculation purposes.

5.

Terminal boxes and cabinets shall have identified pressure type terminal strips and shall be located at the base of each riser. Terminal strips shall be labeled as specified or as approved by the COTR.

2.3 FIRE ALARM CONTROL UNIT

A.

The Fire Alarm Control Unit is an existing Edwards EST3 with the contact information indicated on the drawings. Only the approved technicians for this system is allowed to work on this system.

2.4 STANDBY POWER SUPPLY

A.

Existing

2.5 ALARM NOTIFICATION APPLIANCES

A.

Existing.

2.6 ALARM INITIATING DEVICES

A.

Existing

2.7 SUPERVISORY DEVICES

A.

Duct Smoke Detectors:

1.

Duct smoke detectors shall be provided and connected by way of an address reporting interface device. Detectors shall be provided with an approved duct housing mounted exterior to the duct, and shall have perforated sampling tubes extending across the full width of the duct (wall to wall). Detector placement shall be such that there is uniform airflow in the cross section of the duct.

2.

Interlocking with fans shall be provided in accordance with NFPA 90A and as specified hereinafter under Part 3.2, "TYPICAL OPERATION".

3.

Provide remote indicator lamps, key test stations and identification nameplates (e.g. "DUCT SMOKE DETECTOR AHU-X") for all duct detectors. Locate key test stations in plain view on walls or ceilings so that they can be observed and operated from a normal standing position.

PART 3 - EXECUTION

3.1 INSTALLATION:

A.

Installation shall be in accordance with NFPA 70, 72, 90A, and 101 as shown on the drawings, and as recommended by the major equipment manufacturer. Fire alarm wiring shall be installed in conduit. All conduit and wire shall be installed in accordance with, Section 26 05 33, RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS: Conduit and boxes and all penetrations of smoke and fire barriers shall be protected as required by Section 07 84 00, FIRESTOPPING.

B.

All conduits, junction boxes, conduit supports and hangers shall be concealed in finished areas and may be exposed in unfinished areas.

C.

All new exposed conduits shall be painted in accordance with Section 09 91 00, PAINTING to match surrounding finished areas and red in unfinished areas.

D.

All existing accessible fire alarm conduit not reused shall be removed.

3.2 TYPICAL OPERATION

A.

The existing sequence of operations shall not be modified. All new devices shall match and interface with the existing sequence of operations and be controlled as indicated in the matrix. The existing manufacturer’s representative shall be utilized for all new programming.

B. Operation of duct smoke detectors shall cause a system supervisory condition and shut down the ventilation system and close the associated smoke dampers as appropriate.

3.3 TESTS

A.

Provide the service of a NICET level III, competent, factory‑trained engineer or technician authorized by the manufacturer of the fire alarm equipment to technically supervise and participate during all of the adjustments and tests for the system. Make all adjustments and tests in the presence of the COTR.

B.

Before construction begins the contractor shall perform testing on all devices within the affected construction areas. Any devices that are not functional shall be listed and brought to the attention of the Contracting Officer. Final testing shall include all relocated and new devices.

C.

When the systems have been completed and prior to the scheduling of the final inspection, furnish testing equipment and perform the following tests in the presence of the COTR. When any defects are detected, make repairs or install replacement components, and repeat the tests until such time that the complete fire alarm systems meets all contract requirements. After the system has passed the initial test and been approved by the COTR, the contractor may request a final inspection.

1.

Before energizing the cables and wires, check for correct connections and test for short circuits, ground faults, continuity, and insulation.

2.

Test the insulation on all installed cable and wiring by standard methods as recommended by the equipment manufacturer.

3.

Open each alarm initiating and notification circuit to see if trouble signal actuates.

4.

Ground each alarm initiation and notification circuit and verify response of trouble signals.

3.4 FINAL INSPECTION AND ACCEPTANCE

A.

Prior to final acceptance a minimum 30 day "burn‑in" period shall be provided. The purpose shall be to allow equipment to stabilize and potential installation and software problems and equipment malfunctions to be identified and corrected. During this diagnostic period, all system operations and malfunctions shall be recorded. Final acceptance will be made upon successful completion of the "burn‑in" period and where the last 14 days is without a system or equipment malfunction.

B.

At the final inspection a factory trained representative of the manufacturer of the major equipment shall repeat the tests in Article 3.3 TESTS and those required by NFPA 72. In addition the representative shall demonstrate that the systems function properly in every respect. The demonstration shall be made in the presence of a VA representative.

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