B08_Attachment_2_NCR_Regional_Fire_Code_Policy.pdf

NATIONAL PARK SERVICE

NATIONAL CAPITAL

REGION

NCR FIRE PROTECTION

SYSTEMS POLICY

AND

SCOPE OF WORKS

DATE: AUGUST 1, 2023

Interior Region I – National Capital Region

Visitor and Resource Protection, VRP

1100 Ohio Drive, SW

Washington, DC 20242

TABLE OF CONTENTS

BACKGROUND 3

GENERAL REQUIREMENTS 3

FIRE SUPPRESSION SYSTEMS 4

NFPA 13 DRY SYSTEMS 6

NFPA 13 SYSTEMS 6

FIRE ALARM SYSTEMS 6

FIRE ALARM DESIGN PLANS 8

LINEAR HEAT DETECTOR WIRE 10

DIGITAL/CELLULAR COMMUNICATOR 10

ELECTRIC METALLIC TUBE, EMT 10

DOCUMENTS CABINET 10

FACU LABELING 10

ADDRESSABLE FIRE ALARM SYSTEMS 11

FIRE ALARM WIRING SPECIFICATIONS 12

FIRE ALARM DEVICES 12

REFERENCE CODES AND STANDARDS 14

I. BACKGROUND

A. National Park Service (NPS). Region 1, National Capital Region (NCR) Fire Protection System

Policy ensures that systems designed comply with the Director’s Order 58 (DO58), Reference Manual 58 (RM58), the National Fire Protection Association (NFPA), and the International Code Council family of codes (ICC). NCR fire protection policy design criteria may or may not be required by other codes and it may exceed the latest code requirements. Do we say “IBC” also?

B. The NCR Authority Having Jurisdiction/Fire Code Official (AHJ/FCO) requires that this policy be incorporated in all fire protection systems design and installations. All architect/engineers (A/E), contractors, Fire Protection Engineers (FPE), National Institute for Certification and Engineering Technologies (NICET), certified technicians and sprinkler system installers shall be provided with this policy for any fire protection system designs, upgrades, construction and, inspection, maintenance, and testing (IMT)

C. All fire protection systems shall be designed and installed in accordance with the latest

NFPA/IFC codes and standards in effect on the date the design services contract is signed.

D. This document is subject to change based on revisions of the following codes and policies, NPS RM58, NPS DO58, NFPA, and the IFC.

II. GENERAL REQUIREMENTS

A. New construction, renovations, and rehabilitation projects or portion thereof shall not be occupied until the Regional Structural Fire Manager (RSFM), or his designee has issued a certificate of occupancy (CO) to the park superintendent or site manager. Issuance of a CO shall not be construed as an approval of any violation of a code or NPS design standard or criteria.

B. Hot Work Permit is required when construction requires, open flame, welding, brazing, soldering, grinding, and burning. The contractor shall apply for and always have on site, a valid National Park Service hot work permit, issued by the park structural fire coordinator (PSFC), or permit authorizing individual (PAI).

C. Means of egress requirements for the building shall meet the requirements of all applicable codes and standards.

D. All new Architect/Engineer (A/E) designs, shop drawings, and calculations for fire protection systems shall be designed and submitted for review by the AHJ/FCO for approval before any equipment or wiring is installed. The drawing shall be prepared, signed, and stamped by at least one of the following.

1. Certified FPE

2. NICET III or IV certified fire protection systems technician

Wilhelm, Glen S Added "the International Code Council family of codes"

E. Installation, inspection, testing, and maintenance (ITM) of fire protection systems and devices shall be performed by qualified personnel who meet at a minimum NICET II level certification.

F. New Fire Protection systems shall be subject to the following tests in accordance with all applicable codes and standards and acceptance by the Contracting Officer Representative (COR) and AHJ/FCO. All tests shall be coordinated with the National Capital Region Communications Center (NCRCC), or an Underwriters Laboratory listed (UL) third-party monitoring service.

1. Fire Alarm Systems

a. 100% Preliminary Function Test

b. 100% Final Acceptance Test

2. Fire Suppression Systems

a. Flush Test

b. Hydrostatic Test

c. Trip Test

I. FIRE SUPPRESSION SYSTEMS

A. High Pressure Water Mist or any specialized extinguishing systems shall be approved by the

AHJ/FCO early in the design process.

B. Valve Supervision – All water flow control valves, alarm shut off valves, and back flow preventer valves on fire service mains and system risers shall be supervised by UL listed tamper switches and connected to the Fire Alarm Control Unit (FACU), as a supervisory signal. These signals shall be non-latching signals. Valves and switches are to be programmed into the FACU as individual points.

C. Fire Department Connection (FDC) – If the automatic sprinkler system requires 20 or more sprinkler heads, and FDC is required to be installed. The FDC shall be designed on the address side of the building, proposed placement shall be coordinated with the AHJ/FCO early in the design phase. FDC’s require a minimum 3ft of clearance around all sides and shall be no more than 100ft from a fire hydrant.

D. Inspector’s Test Valve – Connections for DRY systems shall be located at the most remote hydraulic point of the system. The size and number of test orifices shall be as prescribed in NFPA

13. All test connections shall be hard piped to the exterior of the building to permit testing of the systems. In historically sensitive buildings, the use of a maximum 50ft hose attached to the test connection and passed through the exterior of the building during the testing will be considered by the AHJ/FCO.

E. Certified Backflow Preventer - shall be installed and tested on all systems. The backflow preventer shall be certified by UL, and American Water Works Association (AWWA) Backflow preventers shall be sized based on hydraulic calculations. Submit manufacturer’s product cut sheets to the Contracting Officer Representative (COR) and AHJ/FCO for approval. Test valve or valves shall be installed to permit forward flowing of the backflow preventer at the designed flow rate of the sprinkler system. The valve or valves shall be hard piped to discharge at a safe point outside the building or at a location approved by the COR and AHJ/FCO. For projects in DC, coordination with DC Water Authority is required on the following forms: “DC Water Meter Sizing Worksheet”, “Backflow Prevention Form” and if applicable “Request Memorandum to

Locate Backflow inside Building”. When only a dedicated Fire Main is being provided to the building a plumbing designer registered in DC shall be provided for the project to evaluate the existing domestic systems in the building and properly fill in the DC Water Meter Sizing Worksheet.

F. Sprinkler Main Valve Discharge - Alarm test valve and main drain valve piping shall be hard piped to discharge at a safe point outside the building or at a location approved by the COR and AHJ/FCO. They shall be installed so that the valve can be opened fully, for enough time to assure a proper test without causing water problems. Main drain connections shall be sized, as per

NFPA 13.

G. Sprinkler Total Coverage – All levels of a building shall be sprinklered, including attics, porches, and concealed spaces, unless exempted by NFPA 13 and approved by the AHJ/FCO.

H. Testing and Flushing – Underground piping shall be tested and flushed in accordance with NFPA 13 and NFPA 24. Testing and flushing shall be conducted in the presence of the COR and or the AHJ/FCO. Testing shall be conducted before backfilling, unless a waiver is granted by the

COR.

1. Testing Schedule – Contractor shall prepare and deliver to the COR a testing schedule, which shall indicate all required tests in sequential order. The COR shall supply all testing forms to the AHJ/FCO. NPS forms or other approved forms shall be used.

2. Testing shall be conducted according to the following.

a. Contractor shall conduct preliminary hydrostatic test and functional test of each system according to NFPA 13, NFPA13R, and or NFPA 13D specifications in the presence of the COR and or AHJ/FCO.

b. Upon completion of all preliminary testing and corrections and or repairs have been completed, submit a request for the final acceptance test along with a signed and dated Contractor’s Material and Test Certificate.

c. The following documents shall be submitted when scheduling the final acceptance test. The COR and AHJ/FCO can provide details on the following documentation required.

1) Preliminary Function Test Report, fire alarm report from the NCRCC and or the third-party monitoring service.

2) Fire Alarm Record of Completion Form (FA-2)

3) Backflow Prevention Assembly Form (BF-1)

4) Contractor Material & Test Certificate for Above Ground Piping

5) Contractor Material & Test Certificate for Underground Piping

6) Fire and Smoke Damper Acceptance Form

d. The final acceptance test and inspection shall be conducted in the presence of the COR and AHJ/FCO and scheduled after 100% preliminary testing is completed (allow 10 working days for the test to be scheduled)

I. Spare Parts Schedule – Contractor shall prepare and electronically submit “SPARE PARTS SCHEDULE” for each different item of material and equipment specified. Data shall include.

1. Complete list of parts and supplies, with current prices and source of supply.

2. List of parts recommended by the manufacturer to be replaced periodically.

3. List of special tools and test equipment required for maintenance and testing of products supplied.

II. NFPA 13 DRY SYSTEMS

A. Sprinkler Pipes - Dry Pipe and Pre-action System pipes shall be in accordance with NFPA 13

7.3.1 and Table 7.3.1.1 and in accordance with 7.3.3

B. Sprinkler Gaskets - utilized for dry pipe systems shall be of silicon compound and approved for dry fire protection systems. These gaskets shall be the flush type that fills the entire cavity between the fitting and the pipe.

C. Dry System Design – The dry system design shall meet the requirement that the system will deliver water to the inspector’s test connection per NFPA 13.

D. Sprinkler Valve Room Temperature – The sprinkler valve room of dry systems shall be monitored for temperature by the FACU. Room temp shall be maintained at a minimum of 40F.

An Underwriters Laboratory Inc. (UL) listed supervisory signal shall be initiated on the FACU if the temperature within the room registers below 40F.

E. Fire Alarm Pressure Switch – Shall be equipped with a supervised alarm cutoff valve.

III. NFPA 13 SYSTEMS

A. NFPA 13 System

1. Wet System Piping – Piping for wet sprinkler systems, shall be black iron schedule 40 Factory Mutual (FM) approved, Copper or another authorized pipe as listed in NFPA 13.

B. NFPA 13R and NFPA 13D Systems

1. CPVC Piping – CPVC piping may be considered in the design of the sprinkler system.

The use of CPVC piping shall be pre-approved by the AHJ/FCO prior to designing the system.

IV. FIRE ALARM SYSTEMS

A. Total Complete Coverage - Total complete coverage automatic fire detection systems shall be provided in all areas of a facility. The system shall meet all applicable standards to include but not limited to ICC codes, NFPA 72 standards, NFPA 101 Life Safety Code and NFPA 70 NEC, current standards editions, the Architectural Barriers Act Accessibility Standard (ABBAAS), and where required by the AHJ/FCO. The coverage shall include smoke detectors in all spaces conditioned above 32F and heat detection in unheated areas that can fall below 32F. Duct SD located when required by NFPA 90A. Manual Pull Station (MPS) boxes, located on the latch side of each exit door, on every floor, travel distance between each MPS not to exceed 200 ft.

B. Fire Alarm System Requirements - Fire protection requirements shall also take precedence.

1. All fire alarm systems shall be addressable systems with FACU, initiating devices, notification appliances, and control functions.

2. The FACU shall be in an accessible area, as approved by the AHJ/FCO or designee.

3. Fire Alarm Annunciator shall be required at main entrance to building if FACU is not provided adjacent to entrance as approved by the AHJ/FCO or designee.

4. Each fire alarm system shall be provided with a power conditioner to protect the fire alarm system from electrical surges, spikes, sags, over-voltages, brownouts, and electrical noise. The power conditioner shall be UL listed and shall have overload protection built in.

5. Device labeling. All addressable input/output fire alarm cover plates and appliances (Including speakers, strobe, smoke sensors, heat sensors, manual pull stations and addressable modules) shall be labeled with their address utilizing a labeling machine.

Handwritten labels shall not be used. Each Signaling Line Circuit (SLC) field appliance shall match the fire alarm display address.

6. The FACU shall be programed to report transmission of primary power failure signals for 180 minutes (3 hours).

7. The fire alarm system shall not be combined with other systems such as building automation, energy management, and or intrusion detection system (IDS).

8. All fire alarm systems shall have an emergency voice/alarm communication system if any of the following conditions exist.

a. The total occupant load of the building is 300 or more occupants.

b. The building is subject to 100 or more occupants above or below the level of exit discharge.

c. Buildings with either of the above occupant loads shall have a general evacuation fire alarm signal in accordance with American National Standard Audible Emergency Evacuation Signal (ANSI/ASA) S3.41 to notify all occupants in the respective building to evacuate.

9. When applicable all wiring, and conduit shall be inspected by the AHJ/FCO prior to the walls and or ceilings being enclosed.

10. Exterior Horn and Strobe – An exterior weatherproof, audible, and visible (horn/strobe) notification device shall be installed on the front, upper area of the structure, unless exempted by the AHJ/FCO.

V. FIRE ALARM DESIGN PLANS

A. Fire Alarm Systems, Architect Engineer’s (AE), and Shop drawings - The drawings and calculations for fire alarm systems must be prepared and submitted for AHJ/FCO approval before any equipment or wiring is installed. The “drawings,” must be prepared, stamped and or signed by:

1. A certified professional fire protection engineer (FPE), or...

2. An individual who has obtained National Institute for Certification in Engineering

Technologies (NICET) Fire Alarm Systems, at a minimum Level III certification, in accordance with NFPA 72 and NFPA 170, (latest edition), and NCR Fire Protection Systems Policy requirements.

B. Architects-Engineers (AE), Design Drawing and or Construction Contractor shop drawings

- All design or construction shop drawings shall be submitted to the COR and AHJ/FCO for review and approval in accordance with NFPA 72, NFPA 170 and NCR Fire Protection Systems Policy and shall include the building’s fire alarm reporting system, fire alarm notification system, and automatic fire detection system.

1. At a minimum, the drawing submissions shall include the following details and/or recommendations.

a. Floor plans should be at a minimum of ⅛” = 1’-0” scale with room names and numbers assigned. Drawings shall not be smaller than ISO A1 sheets 24” by 34” in size.

b. Identification of ceiling types and heights.

c. Alarm Matrix

d. Symbols conforming to NFPA 170.

e. Locations and device numbers of all alarm initiation and notification appliances

f. Alarm, supervisory, and trouble-signaling equipment.

g. Annunciation equipment

h. Power connections

i. Conductor types and sizes

j. Recommended manufacturers of the equipment, including model numbers and

UL listing information for the equipment, devices, and materials

k. Details of ceiling height and construction

l. An explanation of the interface of fire safety control functions

m. Specification sheets shall include of all fire protection system devices, including fire alarm wiring. Mark and label the device model to be used.

C. Preliminary Function Test and Final Acceptance Test

1. Prior to the acceptance test of the system, the contractor shall have a factory trained technician/NICET II certification or higher conduct a “PRELIMINARY FUNCTION TEST” in the presence of the COR, by inspecting and testing the fire detection and alarm system as required by NFPA 72.

2. Test Equipment, Instruments, and Tools - All necessary equipment, instruments and tools required to conduct the preliminary function testing and final acceptance testing shall be made available by the contractor. The following equipment shall be the minimum for conducting the tests.

a. Heat Detectors and Smoke Detector approved testing tools.

b. Ladders and scaffolds as required for access to installed equipment.

c. Multi-meter for reading voltage (current and resistance).

d. Intelligent device programmer/tester (if required to set device addresses).

e. Laptop computer with programming software for any required program revisions.

f. Two-way radios, flashlights, smoke generation devices and supplies.

g. A manufacturer recommended (manometer) device for measuring air flow through air duct smoke detector sampling assemblies.

h. Decibel meter.

i. Provide a testing kit for testing CO detectors in accordance with manufacturer’s requirements.

j. Magnets shall not be used to perform any fire alarm testing.

3. Points List - The fire alarm device information or data shall be provided to the COR, park interpreting staff, project manager and AHJ/FCO for review and approval before programming the FACU. The fire alarm device information should be the device type, device number, point description, and location address. For example, smoke detector, office #102, or pull station, front door. Once approved by the AHJ/FCO, the points list shall be programmed into the National Capital Region Communication Center (NCRCC), and or a third-party monitoring service dispatch center whichever is applicable to the project.

4. Preliminary Functional Test – shall be performed in accordance with the manufacturer’s’ specifications and NFPA code, and in the presence of the COR. A copy of the dispatch centers successful preliminary functional test report shall be maintained and submitted when scheduling the final acceptance test.

5. Final Acceptance Testing – shall be witnessed by the COR and AHJ/FCO or designee.

Written request for the final acceptance test shall be submitted by the COR to the AHJ/FCO, with the following documents as appropriate, allowing up to 10 days for processing.

a. Preliminary Function Test Report

b. Fire Alarm Technician NICET Certification

c. Fire Alarm Record of Completion form (FA-2)

d. Fire Smoke Damper Acceptance Form

e. Smoke Detector Sensitivity report

6. ALL TESTING SHALL BE IN ACCORDANCE WITH NFPA 72 AND NCR

FIRE PROTECTION SYSTEMS POLICY

7. Facility Management Software System (FMSS) – The COR shall assure the website is updated and the FMSS information is provided to the AHJ/FCO prior to the final acceptance test. The following information is required for the FMSS system.

a. FMSS Building ID#

b. Fire Alarm FMSS Asset ID#

c. Sprinkler System FMSS Asset ID #

d. Electrical Back-up Generator Asset ID# and specification sheets

e. Fire Pump Asset ID# and specification sheets

f. Cellular Communicator coordinator’s name, title, phone number and the park site cellular communicator account #.

VI. LINEAR HEAT DETECTOR WIRE – Large attics or lofts especially those with difficult access, the use of linear heat detector wire should be considered in design. The intent is to eliminate the necessity to crawl through an attic to test smoke and heat detectors. The end of line test box shall be mounted below the ceiling or other approved location and use a key switch for testing the circuit.

VII. CELLULAR COMMUNICATOR – The NCR fire protections Systems Policy requires a cellular communicator for communication purpose from the FACU. Cellular communicators shall be UL listed or equivalent.

VIII. ELECTRIC METALLIC TUBE (EMT) – All fire alarm communication lines to the FACU shall be installed in EMT conduit.

IX. FIRE ALARM DOCUMENT CABINET – A steel drawing storage cabinet or cabinets shall be installed adjacent to the FACU. The cabinet shall be red in color and sized to store all required fire alarm system documents including a copy of the software program for the system. The access door shall be lettered “FIRE ALARM DOCUMENTS” in white indelible letters minimum of 1” in height.

The door or doors shall be locked with a keyed lock 3/4” barrel.

X. FACU LABELING – The following information shall be installed inside the FACU door.

A. Label identifying the location of electrical distribution panel and circuit breaker number for primary power. The circuit breaker shall have a listed locking device the prevents the circuit breaker to accidentally trip. The breaker shall be identified in red text “FIRE ALARM CIRCUIT”

B. Fire Alarm Contractor Information

C. NCRCC or UL Listed Central Station Phone Number

D. Third-Party Monitoring Information

1. Phone Number

2. Account Number

3. Password (if applicable)

XI. ADDRESSABLE FIRE ALARM SYSTEMS

A. The NCR Fire Protection Systems Policy permits addressable fire alarm systems only. Fire alarm systems shall be by points only.

B. System design shall provide for TOTAL (COMPLETE) COVERAGE fire detection system Fire alarm system design shall be based on any Silent Knight (SK) addressable devices with SK Protocol, SK fire alarm control units, detectors, modules, and accessories. Except, Cellular communicators shall be Tel guard TG7-FS LTE or latest edition.

C. The preferred FACP shall have a built-in cellular communicator.

D. PROPRIETARY fire protection systems are NOT permitted.

E. The system shall utilize a microprocessor-based control panel with built in UL-listed communicator designed for applications requiring smoke detection, thermal/heat detection, manual pull stations and sprinkler supervision.

F. The system shall have the ability to perform drift compensation and calibration checks on each sensor connected to it.

G. The system shall have a provision to add additional detectors if future building modifications require additional detectors.

H. The system shall have a built-in annunciator with a minimum of eighty (80) character display and can be programmed through the built-in control panel touch pad, remote annunciators, or a Windows based downloading software.

I. The system shall provide dual reporting capability and communicate to two (2) separate alarm monitoring centers utilizing the data language “Contact ID”. The fire alarm devices should be labeled, and the contact ID device information should be the same in the FACU and the NCRCC and with the third-party monitoring service whichever is applicable. The contact ID device information should be the device type, device number, point description, and location address.

For example, smoke detector, office #102, or pull station, front door.

J. Digital/Cellular Communicators – must be an integral part of the control panel and be capable of reporting by fire alarm device points supervisory, and trouble as well as all system status information such as loss of AC (at 3-hour interval), low battery, ground fault, and loss of supervision to any remote devices with individual and distinct messages to two separate central stations.

1. The communicator must also be capable of up/downloading of all system programming options, event history and sensitivity compliance information to a PC on site, or at a remote location.

2. The communicator shall have an answering machine bypass feature that will allow the panel to respond to communication even on phone lines that have other communication equipment present. The communicator must be capable of reporting via Security Industry Association (SIA), standards and contact ID formats. The communicator shall have a delayed AC loss report function which will provide a programmable report delay plus a 10-25 min random component to help ease traffic to the central station during a power outage. No controls that use external modems for remote programming and diagnostics shall be accepted.

3. The communicator shall be listed and approved for transmission technologies and comply with NFPA 72 requirements.

K. The system shall be installed as per the manufacturer’s installation manual.

L. All control valves for automatic fire sprinkler systems shall be individually monitored by the FACU. Each supervisory device shall be separate points programmed into the FACU.

M. The contractor shall be responsible for connecting the FACU to the cellular communicator with the assigned phone numbers.

XII. FIRE ALARM WIRING SPECIFICATIONS

A. Fire Alarm Initiating Device Circuits (IDC), Notification Appliance Circuits (NAC), and Signal

Line Circuits (SLC), shall be Class A or X.

B. Induced noise (transfer of electrical energy from one wire to another) can interfere with telephone communication or cause false alarms. To avoid induced noise, follow these guidelines.

1. Isolate input wiring from high current output and power wiring. Do not pull one multi-conductor cable for the entire panel. Instead, separate the wiring.

2. Do not pull wires from different groups through the same conduit. If you must run them together, do so for as short a distance as possible or use shielded cable. Connect the shield to earth ground at the panel. Route high and low voltages separately.

C. The system shall utilize standard fire rated wire, no twisted pair.

XIII. FIRE ALARM SYSTEM DEVICES

A. Initiating Devices

1. Smoke Detectors – Shall be photo electric type. Analog addressable multi-criteria smoke detectors that can be programmed to use a combination of smoke, heat, and time for specific applications.

2. Heat Detectors – Shall be selected to operate in areas which are not conditioned, and where temperatures may fall below 32F.

3. Bases, Smoke and Heat Detectors – Shall be programmable using switches on the base or detector. Separate programming units shall not be used.

4. Duct Smoke Detectors – Shall be of the addressable type, with a plug-in type of detector head, duct mounted housing, and sampling tubes that provide airflow through the duct housing.

5. Manual Fire Alarm Boxes – Shall be of the addressable type and shall be single action and red in color.

6. Sprinkler Supervisory and Alarm Devices – shall be installed and connected to the

FACU.

7. Other initiating devices approved by the AHJ/FCO.

B. Notification Devices

1. Visible notification appliances (Horn/Strobe Lights) shall be UL1971 compliant and synchronized on each circuit. Visible notification appliances shall be multi-candela adjustable, “red in color and labeled “FIRE” with white letters or white in color and labeled “FIRE” with red letters. Appliance color shall be approved by COR.

2. At least one weatherproof audible and visual notification (horn and strobe) appliance shall be installed outside, near the primary entrance, on the front of the building. AHJ shall be consulted for appropriate location.

3. Audible notification appliances shall be UL listed and shall be red or white in color.

Appliance color shall be approved by COR.

REFERENCE CODES FOR FIRE ALARMS AND SPRINKLER SYSTEMS

• NFPA 13, Installation of Sprinkler Systems.

• NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection.

• NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection

Systems.

• NFPA 70, National Electrical Code.

• NFPA 72, National Fire Alarm Code.

• NFPA 90A, Standard for the Installation of Air Conditioning and Ventilating Systems.

• NFPA 101, Life Safety Code, latest edition, as amended by NPS RM 58

• NFPA 170, Standard for Fire Safety Symbols.

• ICC Family of Codes

• IBC, International Building Code

• IFC, International Fire Code

• National Institute for Certification in Engineering Technologies, Division of NICET

• ANSI A17.1, Safety Code for Elevators, Dumbwaiters, Escalators, and Moving Walks.

• UL 1971, Standard for Safety Signaling Devices for the Hearing Impaired.

• UL 38, Standard for Safety Manually Actuated Signaling Boxes for Use with Fire Protection

Signaling Systems.

• UL 268, Standard for Safety Standard for Smoke Detectors for Fire Protective Signaling Systems.

• IFC, International Fire Code

• UL 268A, Standard for Safety Standard for Smoke Detectors for Duct Application.

• UL 521, Standard for Safety Heat Detectors for Fire Protection Signaling Systems.

• UL 864, Standard for Safety Standard for Control Units for Fire Protective Signaling.

A. Conflicts: Where the applicable codes and standards differ, the more stringent requirement shall be applied. Where Codes and specifications conflict, the specification shall apply.

B. Some requirements of this specification are more than those stated in the applicable codes and standards.

These additional requirements are intentional and shall be adhered to.

C. Where items from the referenced Codes and Standards are repeated in this section, it is intended to call attention to them. It is not intended that other parts of the referenced Codes and Standards shall be assumed to be omitted if not repeated in this section.

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