AS 2220 2 1989 emergency warning and intercommunication syst

It is Part 2 of a two-partStandard, as follows:AS 2220 Emergency warning and intercommunication systems in buildings AS 2220.1 Part 1: Equipment design and manufacture AS 2220.2 Part 2:

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AS 2220.21989 Emergency warning and intercommunication systems in buildings

-System design, installation and commissioning

Licensed to LUU MINH LUAN on 25 Feb 2002

AS 2220.2—1989

Emergency warning and intercommunication systems in buildings

Part 2: System design, installation and commissioning

Intercommunication Systems in Buildings It was approved on behalf of the Council

of Standards Australia on 4 May 1989 and published on 11 September 1989

The following interests are represented on Committee BD/56:

Association of Consulting Engineers, AustraliaAustralian Assembly of Fire AuthoritiesAustralian Fire Protection AssociationAustralian Uniform Building Regulations Coordinating CouncilBuilding Owners and Managers Association of AustraliaCommonwealth Fire Board

Department of Administrative Services — Construction GroupDepartment of Defence

Electrical Contractors Association of AustraliaFire Protection Industry Association of AustraliaInsurance Council of Australia

Public Works Department, New South WalesPublic Works Department, Victoria

Safety Institute of AustraliaTelecom Australia

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Full details of all Australian Standards and related publications will be found in the Standards Australia Catalogue of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which subscribing members receive, and which gives details of new publications, new editions and amendments, and of withdrawn Standards.

Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are welcomed Notification of any inaccuracy or ambiguity found in an Australian Standard should be made without delay in order that the matter may be investigated and appropriate action taken.

This Standard was issued in draft form for comment as DR 85304.

AS 2220.2—1989

Emergency warning and intercommunication systems in buildings

Part 2: System design, installation and commissioning

First published as part of AS 2220—1978.

AS 2220—1978 (in part) revised and redesignated

PREFACEThis Standard was prepared by Standards Australia’s Committee on EmergencyWarning and Intercommunication Systems in Buildings It is Part 2 of a two-partStandard, as follows:

AS 2220 Emergency warning and intercommunication systems in buildings

AS 2220.1 Part 1: Equipment design and manufacture

AS 2220.2 Part 2: System design, installation and commissioning (this Standard) This Standard together with AS 2220.1 supersede AS 2220—1978, Emergency warning and intercommunication systems for buildings and provide more detailed requirements

than AS 2220—1978 although not differing in the overall intent of that Standard

AS 1851, Maintenance of fire protection equipment, Part 10: Emergency warning and intercommunication systems specifies the periodic inspection and maintenance

requirements of the emergency warning and intercommunication systems designed andinstalled in accordance with this Standard

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FOREWORD 4

SECTION 1 SCOPE AND GENERAL 1.1 SCOPE 5

1.2 REFERENCED DOCUMENTS 5

1.3 DEFINITIONS 5

SECTION 2 EMERGENCY WARNING SYSTEMS 2.1 GENERAL REQUIREMENTS 6

2.2 FUNCTIONAL REQUIREMENTS 6

2.3 OPERATIONAL REQUIREMENTS 7

SECTION 3 EMERGENCY INTERCOMMUNICATION SYSTEM 3.1 SEPARATION 8

3.2 LOCATION OF WARDEN INTERCOMMUNICATION POINT (WIP) 8

SECTION 4 POWER SUPPLY 4.1 GENERAL 8

4.2 POWER SUPPLY CONNECTION 8

4.3 BATTERIES 8

SECTION 5 INSTALLATION 5.1 GENERAL 9

5.2 WIRING 9

5.3 TERMINATIONS AT LOUDSPEAKERS 9

5.4 EQUIPMENT PROTECTION 9

5.5 INSTALLATION OF BATTERIES 9

5.6 EMERGENCY NOTICES 9

5.7 OPERATING INSTRUCTIONS 12

5.8 INSTALLER’S STATEMENT 12

SECTION 6 COMMISSIONING 6.1 GENERAL CHECKS 13

6.2 SPECIFIC CHECKS 13

6.3 DOCUMENTATION 13

APPENDICES A HAZARD-RESISTANT WIRING COMPONENTS 14

B TYPICAL METHOD OF OPERATION AND RESPONSE OF PERSONNEL 15

C SEALED BATTERIES 16

D REPORT OF TESTS FOR SEALED BATTERIES 18

E COMMISSIONING TEST REPORT 19

F EMERGENCY WARNING AND INTERCOMMUNICATION SYSTEMS STANDARD FORM OF INSTALLER’S STATEMENT 20

G EMERGENCY WARNING AND INTERCOMMUNICATION SYSTEMS CERTIFICATE 21

H EMERGENCY WARNING AND INTERCOMMUNICATION SYSTEMS SYSTEM INFORMATION 22

An emergency warning and intercommunication system is installed in a building for thepurpose of enabling the orderly evacuation of the building in the event of an emergency Toachieve this aim, it is essential that the emergency warning and intercommunication systemhas the following capabilities as appropriate:

(a) Provision for manual and automatic activation

(b) On activation, the ability to alert wardens with an audible alarm (A visual alarm mayalso be required)

(c) Where both an emergency warning system and an emergency intercommunicationsystem are required to comply with AS 2220, these systems are integrated to provide

a positive means of intercommunication between the House Warden and the variousfloors or Zone Wardens to enable the orderly evacuation of the building

(d) Emission of audible or visible signals or both that will either (i) alert the occupants; or

-(ii) order the occupants to vacate the building

(e) Ease of operation

(f) Continuous operation under conditions of hazards

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STANDARDS AUSTRALIA

Australian Standard Emergency warning and intercommunication systems in buildings

Part 2: System design, installation and commissioning

SECTION 1 SCOPE AND GENERAL

1.1 SCOPE This Standard sets out the performance

requirements for the design, installation, and

commissioning of emergency warning and

intercommunication systems installed in buildings

NOTE: The method of operation of the emergency warning and

intercommunication system (EWIS) and the response of personnel

are indicated in Appendix B.

1.2 REFERENCED DOCUMENTS The following

documents are referred to in this Standard:

AS

1088 Hearing aids

1088.4 Part 4: Magnetic field strength in

audio-frequency induction loops forhearing aid purposes

1259 Sound level meters

1530 Methods for fire tests on building materials,

components and structures1530.4 Part 4: Fire-resistance test of elements of

construction

1670 Automatic fire detection and alarm systems —

S y s t em d es i g n , i n s t al l a t i o n , a n dcommissioning

1851 Maintenance of fire-protection equipment

1851.10 Part 10: E m e r g e n c y w a r n i n g a n d

intercommunication systems

1981 Stationary batteries of the lead-acid pasted

plate type

2036 Manually operated fire alarm call points

2191 Stationary batteries of the lead-acid Plante

positive plate type

2220 Emergency warning and intercommunication

systems for buildings2220.1 Part 1: Equipment, design and manufacture

2293 Emergency evacuation lighting in buildings2293.1 Part 1: Design and installation

2676 Installation and maintenance of batteries in

buildings

3000 SAA Wiring RulesBS

6387 Specification for performance requirements for

cables required to maintain circuit integrityunder fire conditions

1.3 DEFINITIONS For the purpose of this Standard,

the definitions given in AS 2220.1 and the followingapply:

1.3.1 Fire compartment — a fire-isolated compartment

or enclosure constructed of fire-resistant materials

1.3.2 Fire-resistance level (FRL) — the ability of an

element of construction, component or structure to fulfilfor a stated period of time the required structuraladequacy, integrity, thermal insulation and other expectedduty specified during exposure to a fire test specified in

AS 1530.4

1.3.3 Fire resisting — an element of construction,

component or structure which, by requirement of theRegulatory Authority, has a specified fire resistance

1.3.4 Main equipment — equipment essential to the

operation of the system including, control equipment,amplification equipment and power supply modules

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SECTION 2 EMERGENCY WARNING SYSTEMS

2.1 GENERAL REQUIREMENTS.

2.1.1 Emergency control panels (ECPs).

2.1.1.1 Location The master emergency control panel

(MECP) and any additional emergency control panels

(ECPs), that may be required, shall be installed in an

approved location complying with the following

requirements:

(a) The ECP area shall be secure and relatively isolated

acoustically The ambient noise level at the ECPs

shall not exceed 70 dB(A)

NOTE: This Standard expects the ambient noise level to be

assessed taking into consideration the unusual circumstances of

an emergency For example, during a fire, it is expected that a

fire brigade booster pump may be operating outside the building,

thereby increasing the noise level in the lobby area above 70

dB(A) The lobby area in this case, would be unsuitable for the

ECP, unless provisions are made for its isolation.

(b) Access to the ECPs shall not be obstructed, nor

shall any ECP obstruct the evacuation of the

building

NOTES:

1 It is not recommended to locate any ECP in an area where

a high level of activity is expected during an emergency evacuation.

2 In the event of an emergency, operators of the system, and

most particularly the house warden are expected to make a series of decisions over a short time It has been established that a suitable environment, as well as a system that is easy

to operate, play an important role in the successful handling

of the emergency, and hence, the safety of occupants.

3 Safe manning should be possible under anticipated

conditions of hazard and emergency.

(c) ECPs shall be located so that visible indications

shall remain readily distinguishable, under all

ambient lighting conditions

2.1.1.2 Physical working environment The following

requirements shall apply:

(a) Lighting Emergency lighting shall be provided as

required in accordance with AS 2293.1

(b) Ventilation When batteries are located inside the

ECP cubicle, adequate ventilation in accordance

with AS 2676 shall be provided

(c) Workspace. The personnel workspace shall be

arranged so as to minimize distraction by peripheral

activities, and its plan dimensions shall be not less

than those specified in Figure 2.1

2.1.2 Additional facilities A notice shall be provided

at every ECP location, giving essential instructionsnecessary to ensure the correct use of the equipment, theterminology being understandable by non-technicalpersonnel

NOTE: It is recommended that a telephone be provided in the vicinity of the MECP.

2.1.3 Interconnection of alarm systems The main

equipment shall be interconnected with the fire indicatorpanel (FIP) where provided An isolation facility shall beincorporated, to prevent automatic actuation of theemergency warning system under test conditions Anyother alarm system connected to the emergency warningsystem shall have a similar facility

Isolation of alarm-initiating signalling lines shall raise afault indication as specified in AS 2220.1

2.2.3 Output of loudspeakers At any location within

the signal reception area, the A-weighted sound pressurelevel of the audible signals, measured with the timeweighting ‘F’ (fast), shall exceed by a minimum of 10

dB the noisiest background sound pressure levelaveraged over a period of 60 s This level shall be notless than 65 dB and not more than 105 dB These valuesare to be determined in accordance with AS 1259.For audible signals intended to arouse sleepingoccupants, the sound pressure level signals shall be notless than 75 dB when measured at the sleeping position(see Note)

The sound pressure level shall not fall by more than 6

dB when tested under battery-powered operation (seeClause 4.3.2)

Loudspeakers installed within the vicinity of any ECP or

WIP shall not inhibit the normal operation of the system

NOTE: The 75 dB signal level may not be adequate to wake all

sleeping occupants.

2.2.4 Visible signals. Where the background

A-weighted noise level exceeds 95 dB, visible signals

shall be installed The number and disposition of visible

signalling devices, shall be such as to ensure visibility in

the required areas, and the intensity of the visible signals

shall ensure perception by the occupants They shall

comply with the requirements for visible signals in AS

2220.1

Visible signalling devices shall be provided with suitable

identification, e.g signs or symbols giving the

appropriate instructions

2.3 OPERATIONAL REQUIREMENTS.

2.3.1 Initiation In addition to manual operation from

an ECP and any automatic activation, provision shall be

made to manually actuate the EWS from within each

evacuation zone This shall be achieved by either

-(a) one or more red manual call points, complying with

AS 1603.5, as part of the fire alarm system; or

(b) one or more white emergency alarm initiating

devices, complying with AS 2220.1

Both red and white devices shall not be present withinthe same evacuation zone

NOTE: The regulatory authority may have specific requirements which could limit the number of alarm initiating devices which can

be installed within one evacuation zone.

2.3.2 Duration of alert signal The alert signal shall

continue on until manual control of the system is taken

or, if not responded to within a prescribed time frominitiation, the signal shall be automatically replaced by anevacuation signal The prescribed time shall beestablished to suit the particular building but it shall notexceed 10 min For buildings with 6 or more evacuationzones, the automatic execution of the evacuation shall bearranged, so that the affected evacuation zones areevacuated first and the other evacuation zones areevacuated in a logical order of priority

2.3.3 Use of the system for non-emergency purposes.

The emergency warning system may be used as apaging-background music system under non-emergencyconditions, provided that -

(a) the equipment is designed to override ancilliaryfunctions under emergency conditions as specified

in AS 2220.1;

(b) the capacity of the battery charger as specified in

AS 2220.1 will provide sufficient current toaccommodate the additional load; and

(c) the system integrity is maintained

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SECTION 3 EMERGENCY INTERCOMMUNICATION SYSTEM

3 1 S E P A R A T I ON T h e emer g en cy

intercommunication system shall be separate from the

Telecom Australia system and from any other

communication system

3.2 LOCATION OF WARDEN

INTER-COMMUNICATION POINT (WIP) A WIP shall be

located on each level, or, where a floor is divided into

two or more evacuation zones, in each evacuation zone

The requirements for the position of each point are

similar to those given in Clause 2.1.1.1 for the ECP,

with the additional requirements that it

shall be convenient to a fire-isolated escape route, ormeans of egress, and in a position in the level orevacuation zone, that will permit control of and egressfrom the associated area

If the WIP handset is enclosed within any other cabinet,

it must be assured that the 80 db(A), audible signal,when measured at 1 m from the apparatus is maintained

as specified in AS 2220.1

WIPs shall be mounted at a height between 1200 mmand 1800 mm above floor level

SECTION 4 POWER SUPPLY

4.1 GENERAL The system shall be energized from a

reliable source of supply and shall be connected in

accordance with AS 3000 The power source shall be—

(a) an a.c supply from an electricity authority or a

source equal in quality and reliability; and

(b) batteries, as specified in Clause 4.3, which shall

supply the necessary power to the system in the

event of mains input power failure

4.2 POWER SUPPLY CONNECTION The system

shall be directly connected to the line side of the nearest

electrical distribution board and it shall be separately

protected by a circuit breaker or fuse The circuit breaker

or fuse shall be clearly labelled, to indicate that it

c o n t r o l s t h e e m e r g e n c y w a r n i n g ( a n d

intercommunication) system No other load or equipment

shall be connected to the circuit

4.3 BATTERIES.

4.3.1 General Batteries shall be of a type specially

designed for continuous float charging conditions, and

shall comply with the performance requirements of one

or more of the following, as appropriate:

(a) Lead-acid pasted type batteries (see AS 1981)

(b) Lead-acid Plante positive plate type batteries (see

AS 2191)

(c) Sealed batteries (see Appendix C)

Sealed batteries which cannot be recharged after a total

discharge to zero volts are not acceptable

Cells which require the addition of electrolyte during

service shall be provided with means of visual inspection

of the electrolyte for maximum and minimum levels, and

low electrolyte alarm indication

NOTES:

1 Batteries which have a memory effect or cyclic discharge/charge requirements are considered unsuitable.

2 For requirements on the installation, of batteries, see Section 5.

4.3.2 Battery capacity The capacity of the batteries

shall be, in the event of mains input power failure,capable of maintaining the system in normal working(quiescent) condition for at least 8 h After which,sufficient capacity shall remain to operate the emergencywarning and intercommunication system including allaudible and visible signals at the specified outputs, for aperiod not less than 90 min and within the temperaturerange specified in AS 2220.1

NOTE: When calculating the capacity of the battery required to power the system, consideration needs to be given to:

(a) The available capacity of the battery at the beginning and at its end of life.

(b) The reduction in capacity due to low ambient temperature (c) The reduction in capacity when discharging at the 1.5-hour rate compared to the 10-hour rate.

The above considerations will lead to a required capacity

of between 1.5 and 2 times the capacity at the 10-hourrate

4.3.3 Battery connections The connecting leads to the

battery shall be clearly labelled to reduce the possibility

of reverse connections to the battery

Two types of external connections are acceptable:(a) Bolted lugs for centrally located battery supplies; or(b) Quick connector type connectors for distributedbattery supply

(See also AS 2220.1 for requirements forbattery protection.)

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SECTION 5 INSTALLATION

5.1 GENERAL. The emergency warning and

intercommunication system shall be installed in a manner

that will enable the fulfilment of the design requirements

of the equipment as outlined in AS 2220.1

5.2 WIRING.

5.2.1 General The wiring shall comply with AS 3000

with conductor cross-sectional area not less than

0.75 mm2

, and Clauses 5.2.2 and 5.2.3, and shall bededicated to the emergency warning and

intercommunication system (EWIS) functions only The

installation wiring of the system shall be carried out by

licensed electrical contractors

5.2.2 Wiring protection. Wiring, forming part of

emergency warning and intercommunication systems and

where required under Table 5.1 and as typically shown

in Figure 5.1, shall be of such materials and so installed

that the system shall be capable of operating under

conditions of hazard for at least 90 min The following

shall be deemed to comply with the required protection:

(a) Wiring that complies with Appendix A

(b) Wiring that is enclosed in a form of construction

that enables the wiring to fulfil the test conditions

given in Paragraph A3, Appendix A, provided that

no power services wiring is contained in such

enclosure

Cabling systems and their protective enclosures shall be

installed in the manner used in the prototype that

qualified for the specified test performance (See

Appendix A.)

Where cables or enclosures penetrate fire-resisting walls

or floors, suitable sealing materials shall be installed to

comply with building regulations

5.2.3 Integrity of circuits Wiring between ECPs, main

equipment rack, FIP, evacuation zone loudspeaker

groups, emergency alarm device and WIPs, shall be

arranged so that a short-circuit or open-circuit within a

cable in any zone shall not affect the normal operation of

other evacuation zones as defined in Sections 2 and 3

5.2.4 Fault monitoring. Where fault monitoring of

signal wiring is required, end of line termination devices

shall be provided so that open-circuit or short-circuit

faults can be detected and raise an alarm at the MECP

5.2.5 Joints and terminations Joints in conductors

shall not be permitted except in long runs Joints and

terminations shall be made only in a suitable enclosed

terminal box or strip employing fixed terminations

Joints and terminations associated with the vertical riser

cables shall be made within the associated fire-isolated

duct

5.2.6 Separation from other systems The wiring of

the EWIS and its associated extra-low voltage circuits

shall be kept separate and distinct from power and light

circuits (see segregation of wiring systems in AS 3000)

Where a duct system is used a separate channel or chase

shall be provided

5.3 TERMINATIONS AT LOUDSPEAKERS.

5.3.1 Connection facilities required Each incoming

and outgoing conductor of the same potential shall be

connected to a separate screw or clamping facility.Terminal blocks shall be securely fixed to theloudspeakers Terminals shall not be exposed to viewand shall only be accessible with the use of tools

5.3.2 Terminals, design and construction Terminals

shall be of copper or copper alloy and suitable for theapplication Terminals shall be designed andproportioned so that a connection made will not slackenoff or overheat under normal conditions of use Clamptype terminals shall be designed so that the conductorscan be rigidly and effectively clamped between metalsurfaces Clamping devices with screws, which screwdirectly into conductors, shall not be used

5.3.3 Stress on conductor terminals Conductors shall

be so supported and connected that there will be noundue mechanical stress on either the conductors or theterminals to which they are connected

5.4 EQUIPMENT PROTECTION.

5.4.1 Main equipment The main equipment shall be

located in a secure, fire-isolated area within the building.The area shall be free of stored combustible material andignition sources, i.e., areas such as electrical switchrooms, store rooms and similar, are not acceptable

In existing buildings without fire compartments the mainequipment shall be located in an area presenting the leastrisk to the continued operation of the equipment in anemergency

5.4.2 Distributed equipment Equipment installed in

a fire compartment or evacuation zone, servicing otherthan the installed fire compartment or evacuation zone,

is not acceptable, except where the distributed equipment

is installed in a fire compartment in accordance with therequirements for main equipment

5.4.3 Loudspeakers Loudspeakers shall bepermanently fixed in position

5.5 INSTALLATION OF BATTERIES.

5.5.1 General Batteries shall be located in accordance

with AS 2676 and installed in accordance with themanufacturer’s recommendations

5.5.2 Battery enclosures Batteries shall be secured

from unauthorized persons by a locked door The keyshall be identical with other keys required for access tocontrol and indication equipment as specified in

AS 2220.1

Non-sealed batteries shall be located in a separateenclosure sealed from other parts of the equipment Theenclosure shall be protected against corrosion adequatelyventilated, and be of such a size as will permit easyaccess for battery inspection and maintenance withoutneed to disconnect individual cells or batteries

5.6 EMERGENCY NOTICES. Notices providinginstructions to be followed in case of emergency, shall

be positioned adjacent to each ECP and WIP

NOTE: The text of the notice is not specified in this Standard as this depends on the type of building, type of system, and evacuation procedures.

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