Standard
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AS 1670.4:2024
[Current]Fire detection, warning, control and intercom systems - System design, installation and commissioning, Part 4: Emergency warning and intercom systems
This Standard specifies the design, installation and commissioning requirements for emergency warning systems and emergency intercom systems used in buildings for the evacuation of building occupants in the event of a fire or other type of emergency
Published: 28/06/2024
Pages: 54
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope and general
1.1 Scope
1.2 Application
1.3 Normative references
1.4 Terms and definitions
1.5 Abbreviations
1.6 Measurements
1.6.1 Tolerance
1.6.2 Spacing
1.7 System design
1.7.1 General
1.7.2 Baseline data
1.7.3 Alterations to existing systems
1.8 Application of normative references
2 System configuration
2.1 Components
2.1.1 General
2.1.2 Components emergency warning system (EWS)
2.1.3 Components emergency intercom system (EIS)
2.1.4 EWS as part of a FDAS
2.1.5 Connectable devices
2.2 Emergency zone limitations
2.3 Networked CIE
2.4 Distributed parts of CIE
2.5 Transmission path faults
3 Installation requirements
3.1 General
3.2 Control of connectable devices
3.2.1 General
3.2.2 Supervision
3.3 Control and indicating equipment (CIE)
3.3.1 Location
3.3.2 Covering door
3.3.3 Clearance
3.3.4 Working environment
3.3.5 Emergency zone block plan
3.4 Equipment cabinets
3.4.1 Mechanical protection
3.4.2 Labelling
3.5 Power supply equipment (PSE)
3.5.1 General
3.5.2 Main power source
3.5.3 Standby power source
3.5.4 Power supply equipment rating
3.5.5 Standby power source capacity
3.5.6 Battery capacity calculation
3.5.7 PSE selection
3.5.8 Batteries and cabinets — Location
3.5.9 Battery cabling wiring
3.6 Cabling systems
3.6.1 General
3.6.2 Conductors
3.6.3 Cable marking
3.6.4 Termination
3.6.5 Stress on conductors
3.6.6 Joints
3.6.7 Transmission path supervision
3.6.8 Transmission path protection
3.7 Emergency procedures
3.8 Operator’s instructions
3.9 Commissioning of system
4 Emergency warning system installation requirements
4.1 General
4.2 Functional requirements
4.2.1 Distribution of audible emergency warning signals
4.2.2 Initiation
4.2.3 Locations of manual call point (MCP)
4.2.4 Manual call points (MCP)
4.2.4.1 General
4.2.4.2 MCP for emergency evacuation
4.2.4.3 MCP for non-evacuation emergencies
4.2.4.4 MCP for electric lock release
4.2.4.5 MCP for operation or inhibition of other function
4.2.4.6 Operation of MCP for emergency
4.3 Delay before entering emergency warning condition
4.4 Alert signal in automatic mode
4.5 Evacuate signal
4.6 Visual alarm signals
4.7 Output from emergency loudspeakers
4.8 Audio transmission path splitters
4.9 Speech messages
4.10 Live speech intelligibility
4.11 Interconnection to the FDCIE
4.12 Competing sound systems
4.13 Use of the emergency warning system for non-emergency purposes
5 Emergency intercom system installation requirements
5.1 General
5.2 EICIE
5.3 Warden intercom points (WIP)
5.3.1 General
5.3.2 Sound levels during an emergency
5.3.3 Location
5.3.4 Crosstalk, clarity and intelligibility
5.3.5 Audible call signal
Appendix A
A.1 General checks
A.2 Specific emergency warning system checks
A.3 Specific intercom system checks
A.4 Documentation
A.4.1 General
A.4.2 Log
Appendix B
B.1 Protection against mechanical damage
B.1.1 General
B.1.2 WSXX
B.1.3 WSX1
B.1.4 WSX2
B.1.5 WSX3
B.1.6 WSX4
B.1.7 WSX5
Appendix C
C.1 Battery capacity calculations
C.2 Main power source calculations
Appendix D
Appendix E
Appendix F
Appendix G
Appendix H
H.1 General
H.2 Measurements required
H.3 Number of and locations of measurements
H.4 Measurement details
H.4.1 Background noise
H.4.2 Warning Signals
H.5 Reverberation Time Measurement
Appendix I
I.1 Choice of measurement
I.2 Status of the sound system
I.3 Location of measurements
I.4 Measurement of Speech Transmission Index
I.5 Measurement of Live Speech SPL
Appendix J
Bibliography
Cited references in this standard
[Current]
Acoustics - Measurement of room acoustic parameters - Part 2: Reverberation time in ordinary rooms
[Current]
Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index
AS/CA S009
Installation requirements for customer cabling (Wiring rules)
[Available Superseded]
Electroacoustics - Sound level meters, Part 1: Specifications
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