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AS 1670.1:2018


Fire detection, warning, control and intercom systems — System design, installation and commissioning, Part 1: Fire

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AS 1670.1 2018 sets out requirement for the design, installation and commissioning of fire detection and alarm systems comprising components conforming to the requirements of the appropriate component Standards.
Published: 21/12/2018
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Table of contents
Cited references
Content history
Table of contents
About this publication
1 Scope and general
1.1 Scope
1.2 Application
1.3 Normative references
1.4 Definitions
1.5 Abbreviations
1.6 Measurements
1.6.1 Tolerances
1.6.2 Spacing
1.7 System design
1.7.1 General
1.7.2 Baseline data
1.7.3 Alterations to existing system
1.8 Application of normative references
2 System configuration
2.1 Components
2.1.1 General
2.1.2 Components
2.1.101 Provision of FDCIE
2.1.3 Connectable devices
2.2 Designated entry point
2.2.1 Designated building entry point (DBEP)
2.2.2 Designated site entry point (DSEP)
2.3 Detection zone limitations
2.4 Networked FDCIE
2.5 Distributed parts of FDCIE
2.6 Transmission paths faults
3 Installation requirements
3.1 General
3.2 Alarm mitigation methods
3.2.1 General
3.2.2 Alarm acknowledgement facility (AAF) General AAF sounder AAF visual indicator Acknowledgement period AAF control Investigation period Mounting facilities Marking
3.2.3 Alarm delay facility (ADF)
3.2.4 Alarm investigation facility (AIF) General Operation
3.2.5 Alarm verification facility (AVF) Type A dependency
3.2.6 Type B dependency
3.2.7 Type C dependency
3.3 This has been left blank intentionally
3.4 This has been left blank intentionally
3.5 This has been left blank intentionally
3.6 Control of connectable devices
3.6.1 General
3.6.2 Supervision
3.7 Detector alarm indication
3.8 External alarm
3.9 Control and indicating equipment (CIE)
3.9.1 Location
3.9.2 Covering door
3.9.3 Clearance
3.10 Zone block plan
3.11 Carbon monoxide (CO) fire detector labelling
3.12 Fire suppression system alarms
3.12.1 Alarm output to FDCIE
3.12.2 Consultation between parties
3.12.3 Fire suppression system control
3.13 Equipment cabinets
3.13.1 Mechanical protection
3.13.2 Labelling
3.14 Manual call point (MCP)
3.14.1 General
3.14.2 MCP for fire alarm
3.14.3 MCP for emergency evacuation
3.14.4 MCP for non-evacuation emergencies
3.14.5 MCP for electric lock release
3.14.6 MCP for operation or inhibition of other function
3.14.7 MCP for fire alarm and emergency operation
3.15 Power supply equipment (PSE)
3.15.1 General
3.15.2 Main power source
3.15.3 Standby power source
3.15.4 Power supply equipment rating
3.15.5 Standby power source capacity
3.15.6 Battery capacity calculation
3.15.7 PSE selection
3.15.8 Batteries Battery location Battery cabling
3.16 Remote indicators for fire detectors
3.16.1 General
3.16.2 Concealed spaces
3.16.3 Restricted emergency service access
3.16.4 Air-handling system
3.17 This has been left blank intentionally
3.18 This has been left blank intentionally
3.19 Smoke and fire door control
3.19.1 General
3.19.2 Sliding fire doors and fire shutters
3.20 Electric lock release
3.21 Suppression system monitoring devices
3.22 Building occupant warning systems
3.22.1 General
3.22.2 Evacuation signals General Audio transmission path splitters
3.22.3 Audibility of signals
3.22.4 Visual alarm signals
3.22.5 Intelligibility
3.23 Components using radio transmission paths
3.24 Cabling systems
3.24.1 General
3.24.2 Conductors
3.24.3 Cable marking
3.24.4 Terminations
3.24.5 Stress on conductors
3.24.6 Joints
3.25 Transmission path supervision
3.26 Transmission path protection
3.27 Location of detectors
3.27.1 General
3.27.2 Accessible service tunnels
3.27.3 Air-handling systems
3.27.4 Concealed spaces General Electrical equipment
3.27.5 Cupboards
3.27.6 Intermediate horizontal surfaces
3.27.7 Open grid ceilings
3.27.8 Sole occupancy units (SOUs)
3.27.9 Stairways and horizontal passageways
3.27.10 Transportable buildings
3.27.11 Vertical shafts and openings
3.27.12 Lift shafts
3.28 Locations where detectors are not required
3.29 Combination detectors
3.30 Commissioning of system
4 Heat detectors
4.1 Point-type heat detectors
4.1.1 General
4.1.2 Spacing between detectors for level surfaces
4.1.3 Spacing of detectors for sloping surfaces
4.1.4 Spacing from walls, partitions, or air supply openings
4.1.5 Reduced spacing
4.1.6 Spacing in concealed spaces requiring protection
4.2 Line-type heat detectors
5 Smoke and carbon monoxide (CO) fire detectors
5.1 Spacing and location
5.1.1 General
5.1.2 Spacing between detectors for level surfaces
5.1.3 Spacing between detectors for sloping surfaces
5.1.4 Spacing from walls, partitions, and air supply openings
5.1.5 Areas of high air exchange rates
5.1.6 Location of detectors on level surfaces with deep beams
5.1.7 Spacing in concealed spaces requiring protection
5.2 Aspirating smoke detectors
5.2.1 General
5.2.2 Design
5.2.3 Installation requirements
6 Flame detectors
6.1 Location
6.2 Spacing
7 Smoke control systems
7.1 General
7.2 System objectives
7.3 Consultation between parties
7.4 Automatic initiation of smoke control systems
7.4.1 General
7.4.2 Other fire safety systems and system control
7.5 Automatic smoke detection for system control
7.5.1 General
7.5.2 Detector location General Detection in circulation spaces Detection in hot layer smoke control systems
7.5.3 Relative sensitivity of detectors
7.5.4 Location of detectors at doors to pressurized exits and lift landing doors
7.6 Miscellaneous systems
7.6.1 Scope
7.6.2 General
7.6.3 Special purpose systems
7.6.4 Single enclosures
7.6.5 Exhaust systems Minor exhaust systems Major exhaust systems
7.6.6 Supply air systems Minor supply air systems Major supply air systems
7.6.7 Exhaust duct heat detectors
7.6.8 Car park ventilation systems General Override control Supply air smoke detectors Operation in fire mode Jet fan smoke detection
7.7 ​Supply air systems for smoke control
7.8 Kitchen exhaust hood systems
7.8.1 General
7.8.2 Operation under fire conditions
7.8.3 Override control
7.9 Shutdown systems — Operation in fire mode
7.10 Zone pressurization systems
7.10.1 Operation in fire mode
7.10.2 Override control
7.11 Hot layer smoke control systems
7.11.1 System arrangement
7.11.2 Operation in fire mode
7.11.3 Override control
7.12 Ancilliary smoke/fire control equipment operation
7.13 Fire isolated exit pressurization systems
7.13.1 Operation in fire mode
7.13.2 Override control
7.13.3 Supply air smoke detectors
7.14 Lift shaft pressurization system
7.14.1 General
7.14.2 Supply air smoke detectors in fans
7.14.3 Operation in fire mode
7.14.4 Override control
7.15 Fire fan control panel (FFCP)
7.15.1 Location
7.15.2 Function
7.15.3 Manual controls
7.15.4 Fire mode reset
7.15.5 Fan status indicators
7.15.6 Fault indication
7.15.7 Notices and labels
7.15.8 Operating instructions
7.16 This has been left blank intentionally
7.17 System interface
7.17.1 General
7.17.2 Low level interface
7.17.3 High level interface equipment
7.17.4 Interface cabinet
7.18 Transmission paths
7.19 Documentation
7.19.1 Design documentation
7.19.2 Operating and maintenance instructions (as-installed documentation)
7.19.3 Smoke control operating instructions
Appendix A
A.1 General
A.2 Commissioning documentation
A.3 Checks and functional assessment
A.4 Baseline data, test results and documentation
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
B.2 Examples of addressable detectors using transmission paths for smoke control
Appendix C
C.1 Battery capacity calculations
C.1.1 Typical FDAS IQ calculation
C.1.2 Typical FDAS IA calculation
C.2 Main power source calculations
C.2.1 Power supply requirement
Appendix D
Appendix E
Appendix F
Appendix G
Appendix H
H.1 General
H.2 SPL measurements required
H.3 Locations of SPL measurements
H.4 SPL measurement details
Appendix I
I.1 Choice of measurement
I.2 Status of the sound system
I.3 Number of measurements and calculation of the results
I.4 Sound pressure level (SPL)
I.5 Ambient noise level
Appendix J
J.1 General
J.2 Methods of measurement
J.2.1 Speech transmission index (STI)
J.2.2 Rapid (or room) acoustics speech transmission index (RASTI)
J.2.3 Phonetically balanced (PB) word scores
J.2.4 Modified rhyme test (MRT)
J.2.5 Articulation index (AI)
J.2.6 Articulated loss of consonants
J.3 Limitations of the methods
J.3.1 General
J.3.2 Speech transmission index (STI)
J.3.4 Phonetically balanced (PB) word scores (256 and 1009 population)
J.3.5 Articulation index
J.3.6 Articulation loss of consonants
J.4 Correlation of the results of the various methods
Appendix K
Appendix L
Appendix M
M.1 Introduction
M.2 General notes on detectors
M.3 Heat detectors
M.3.1 General
M.3.2 Application
M.4 Smoke detectors
M.4.1 General
M.4.2 Application
M.4.2.1 General
M.4.2.2 Location considerations
M.4.2.3 Ceiling surfaces
M.4.2.4 Stratification
M.4.2.5 Airflow
M.4.2.6 Ducts
M.4.2.7 Special considerations
M.5 Multisensor detectors
M.6 Aspirating smoke detectors (ASD)
M.6.1 General
M.6.2 ASD selection
M.6.3 ASD configuration
M.6.4 Sensitivity classes
M.6.5 Sample hole sensitivity
M.6.6 Alarm thresholds
M.6.7 Flow sensing
M.6.8 Dust filters, detection and rejection
M.6.9 Applications
M.7 Carbon monoxide (CO) fire detectors
M.7.1 General
M.7.2 Application
M.7.2.1 General
M.7.2.2 Stratification
M.7.2.3 Airflow
M.7.2.4 Ducts
M.7.2.5 Special considerations
M.8 Flame detectors
M.8.1 General
M.8.2 Radiation sources and inhibitors
M.8.2.1 General
M.8.2.2 Radiation sources
M.8.2.3 Radiation inhibitors
M.8.3 Ultraviolet flame detection techniques
M.8.3.1 Detection principles
M.8.3.2 Advantages
M.8.3.3 Limitations
M.8.4 Single-channel infrared detectors
M.8.4.1 Detection principles
M.8.4.2 Advantages
M.8.4.3 Limitations
M.8.5 Ultraviolet/infrared (single-channel) flame detectors
M.8.5.1 Detection principles
M.8.5.2 Advantage
M.8.5.3 Limitations
M.8.6 Dual-channel infrared flame detectors
M.8.6.1 Detection principles
M.8.6.2 Advantages
M.8.6.3 Limitations
M.8.7 Triple-channel infrared flame detectors
M.8.7.1 Detection principles
M.8.7.2 Advantages
M.8.7.3 Limitations
Appendix N
Amendment control sheet
Cited references in this standard
Content history
DR AS 1670.1:2018