1、 AS/NZS 3500.4.2:1997 (Incorporating Amendment No. 1) Australian/New Zealand StandardNational Plumbing and Drainage Part 4.2: Hot water supply systemsAcceptable solutions AS/NZS 3500.4.2 Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDEDAS/NZS 3500.4.2:
2、1997 This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee WS-014, National Plumbing and Drainage. It was approved on behalf of the Council of Standards Australia on 22 August, 1997 and on behalf of the Council of Standards New Zealand on 22 August, 1997. It was publis
3、hed on 5 October, 1997. The following are represented on Committee WS-014: ACT Department of Urban Services AUSTAP Association of Hydraulic Services Consultants Australia AusPoly Australian Building Codes Board Australian Gas Association Australian Industry Group Brisbane Water Building Industry Aut
4、hority NZ Building Officials Institute of New Zealand Building Research Association of New Zealand Inc. Business New Zealand Certification Bodies (Australia) Department of Infrastructure, Energy and Resources (Tasmania) Department of Land and Water Conservation NSW Department of Lands Planning and E
5、nvironment (NT) Department of Local Government and Planning (Queensland) Electricity Supply Association of Australia Gas Appliance Manufacturers Association of Australia Housing Industry Association Institute of Plumbing Australia Master Builders Australia Master Plumbers Australia Master Plumbers,
6、Gasfitters and Drainlayers New Zealand National Association Sanitary Plumbing and Drainage Contractors New Zealand Water and Waste Association Plumbers, Gasfitters and Drainlayers Board Plumbing Industry Commission South Australian Health Commission South Australian Water Corporation Sydney Water Co
7、rporation Water Corporation Western Australia Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may b
8、e issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. Detailed information about joint Australian/New Zealand Standards can be fo
9、und by visiting the Standards Australia web site at .au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue. Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more f
10、requent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization. We also welcome suggestions for impr
11、ovement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia International or Standards New Zealand at the address shown on the back cover. This Stand
12、ard was issued in draft form for comment as DR 96401.Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDEDAS/NZS 3500.4.2:1997 (Incorporating Amendment No. 1 ) Australian/New Zealand StandardNational Plumbing and Drainage Part 4.2: Hot water supply systems
13、Acceptable solutions Originated in part as AS CA511968. Previous edition AS 3500.41994. Jointly revised an redesignated AS 3500.4.2:1997. Reissued incorporating Amendment No. 1 (October 2002). COPYRIGHT Standards Australia/Standards New Zealand All rights are reserved. No part of this work may be re
14、produced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Jointly published by Standards Australia International Ltd, GPO Box 5420, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439, Wellington 6020 I
15、SBN 0 7337 1451 X Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDEDAS/NZS 3500.4.2:1997 2PREFACEThis Standard was prepared by the Joint Standards Australia/Standards New ZealandCommittee WS/14, National Plumbing and Drainage Code, to supersedeAS 3500.4
16、1994.This Standard incorporates Amendment 1 (October 2002). The changes arising from theAmendment are indicated in the text by a marginal bar and amendment number againstthe clause, note, table, figure, or part thereof affected.The object of this revision is to issue it as a Joint Australian/New Zea
17、land Standard withminimum deemed-to-satisfy requirements and incorporate amendments and additionsarising from industry requirements compatible with legislation of authorities who canenforce regulations and authorize products for connection to their systems.Noise levels have not been included as prog
18、ress on a unified method of analysis has notbeen agreed upon and require further research.Attention is drawn to the publication of SAA Rul PL/1, Rulings to the JointAustralia/New Zealand Plumbing and Drainage Code. Where Rulings of publicsignificance are issued, they will be available from Standards
19、 Australia through asubscription service. When rulings are included in an amendment, the specific ruling willbe withdrawn at the time of publication of the amendment. Enquiries should be directed toStandards Australia.The terms normative and informative have been used in this Standard to define thea
20、pplication of the appendix to which they apply. A normative appendix is an integralpart of a Standard, whereas an informative appendix is only for information andguidance.Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDED3 AS/NZS 3500.4.2:1997CONTENTSPa
21、geFOREWORD . 6SECTION 1 SCOPE AND GENERAL1.1 SCOPE AND APPLICATION . 71.2 REFERENCED DOCUMENTS 71.3 DEFINITIONS 71.4 WATER QUALITY 71.5 EQUIVALENT PIPE SIZES 81.6 WATER TEMPERATURE . 8SECTION 2 MATERIALS AND PRODUCTS2.1 SCOPE OF SECTION 92.2 AUTHORIZATION 92.3 LIMITS ON USE OF PIPES AND FITTINGS 92.
22、4 CISTERN (COLD WATER STORAGE TANK) MATERIALS 112.5 SAFE TRAY AND SAFE WASTE MATERIALS . 112.6 JOINTING 112.7 BEDDING AND BACKFILL . 122.8 MISCELLANEOUS MATERIALS 12SECTION 3 INSTALLATION OF COLD AND HOT WATER PIPING ANDCONTROLS3.1 SCOPE OF SECTION 133.2 SAFETY PRECAUTIONS 133.3 METHODS OF JOINTING
23、. 133.4 SUPPORT AND FIXING ABOVE GROUND 153.5 LOCATION OF PIPING . 153.6 PIPES IN WATER-CHARGED OR FILLED GROUND . 173.7 CROSS-CONNECTION CONTROL AND BACKFLOW PREVENTION . . . 173.8 CONTAMINATED AREAS 173.9 CORROSIVE AREAS 173.10 DEPTH OF COVER IN PUBLIC AREAS . 183.11 DEPTH OF COVER IN PRIVATE AREA
24、S . 183.12 PROTECTION AGAINST FREEZING . 183.13 COLD WATER PIPING AND CISTERNS 203.14 INSTALLATION OF HOT WATER SUPPLY 233.15 TEMPERATURE CONTROL DEVICES 263.16 THERMOSTATIC MIXING VALVES . 26SECTION 4 INSTALLATION OF WATER HEATERSGENERALREQUIREMENTS4.1 SCOPE OF SECTION 284.2 WATER HEATERS 284.3 LOC
25、ATION 284.4 PROTECTION AGAINST DAMAGE FROM LEAKING WATER 284.5 SUPPORT . 30Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDEDAS/NZS 3500.4.2:1997 4Page4.6 CORROSION PREVENTION AND WEATHER PROTECTION . 314.7 CONNECTIONS TO WATER HEATERS . 314.8 PRESSURE
26、RELIEF AND VENTING OF WATER HEATERS ANDCONTAINERS . 314.9 VALVES 324.10 MULTIPLE INSTALLATIONS OF PRESSURE-TYPE STORAGEWATER HEATERS 394.11 MULTIPLE INSTANTANEOUS WATER HEATERS 414.12 TEMPERATURE/PRESSURE/RELIEF AND EXPANSION CONTROLVALVE DRAIN LINES . 414.13 VENT PIPES . 42SECTION 5 INSTALLATION OF
27、 SOLAR WATER HEATERS5.1 SCOPE OF SECTION 535.2 GENERAL 535.3 INSTALLATION OF SOLAR WATER HEATER CONTAINER . 535.4 INSTALLATION OF COLLECTORS 545.5 INSTALLATION OF CLOSE-COUPLED AND INTEGRAL SOLARWATER HEATERS 575.6 THERMOSIPHON FLOW SOLAR WATER HEATERS WITH REMOTECONTAINERS . 575.7 SOLAR WATER HEATE
28、RS WITH FORCED PRIMARY CIRCULATION . 585.8 SOLAR WATER HEATERS USED AS PREHEATERS . 595.9 MULTIPLE SOLAR WATER HEATERS INSTALLATIONS . 605.10 SUPPLEMENTARY HEATING 60SECTION 6 ENERGY SOURCES AND HEAT RETENTION6.1 SCOPE OF SECTION 636.2 CONTROLLED ENERGY SOURCES . 636.3 WATER HEATERS WITH UNCONTROLLE
29、D ENERGY SOURCE 636.4 HEAT RETENTION 64SECTION 6A ENERGY EFFICIENCY6A.1 SCOPE OF SECTION 656A.2 INSULATION 656A.3 HEAT TRAPS 66SECTION 7 HOT WATER SERVICES FOR THE DISABLED7.1 SCOPE OF SECTION 707.2 GENERAL 70SECTION 8 TESTING AND COMMISSIONING8.1 SCOPE OF SECTION 718.2 FLUSHING 718.3 TESTING . 718.
30、4 COMMISSIONING 718.5 OPERATING INSTRUCTIONS 71Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDED5 AS/NZS 3500.4.2:1997PageSECTION 9 OPERATION AND MAINTENANCE9.1 SCOPE OF SECTION 729.2 GENERAL 729.3 MAINTENANCE OF HOT WATER SERVICES 72APPENDICESA REFERE
31、NCED DOCUMENTS 73B WATER ANALYSIS . 76C TYPICAL RATES OF FLOW 77D PREFERRED SIZES OF PIPE FOR NON-CIRCULATORY AVERAGESINGLE-STOREY TYPE HOUSEHOLD INSTALLATIONS(Copper tube complying with AS 1432 or NZS 3501) 78E RECOMMENDATIONS FOR THE INSTALLATION OF UNRATED SOLARHOT WATER SUPPLY SYSTEMS . 79F RECO
32、MMENDATIONS FOR THE INSTALLATION OF CLOSE-COUPLEDAND INTEGRAL SOLAR HOT WATER SYSTEMS ON ROOFS . 80G SOLAR HOT WATER SYSTEMS SUGGESTED COMPONENT SIZES(UNRATED SYSTEMS) 83H ESTIMATION OF SHADING OF COLLECTORS 88I EFFECT OF INCLINATION AND ORIENTATIONON SYSTEM PERFORMANCE . 93J MAP OF REGIONAL BASIC D
33、ESIGN WIND SPEEDS . 102K AUSTRALIAN CLIMATE REGIONS 103L NEW ZEALAND CLIMATE REGIONS 106Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDEDAS/NZS 3500.4.2:1997 6FOREWORDSTATUTORY REQUIREMENTS Attention is drawn to the relevant statutoryrequirements with
34、respect to(a) the qualifications of persons permitted by law to do hot water plumbing;(b) the administrative procedures to be followed by persons performing hot waterinstallation; and(c) the authorization of materials, products, fixtures, fittings and other components forconnection to water supply s
35、ystems.PROVISION FOR REVISION This Standard necessarily deals with existingconditions, but is not intended to discourage invention or to exclude materials, equipmentand methods which may be developed in future. Revisions will be made from time to timein view of such developments and amendments to th
36、is edition will be made only whenabsolutely necessary.Accessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDED7 AS/NZS 3500.4.2:1997STANDARDS AUSTRALIA/STANDARDS NEW ZEALANDAustralian/New Zealand StandardNational Plumbing and DrainagePart 4.2: Hot water suppl
37、y systemsAcceptable solutionsSECTION 1 SCOPE AND GENERAL1.1 SCOPE AND APPLICATION This Standard sets out the requirements for theinstallation of domestic-type water heaters using potable water. It includes aspects of theinstallation from, and including, the valve(s) on the cold water inlet to any ci
38、stern orwater heater and the downstream fixtures and fittings. This Standard applies to newinstallations as well as alterations, additions and repairs to existing installations.This Standard applies to the installation of the following types of water heaters whichcomply with Clause 4.2.1 or Clause 5
39、.3.1:(a) Electric storage water heaters with a rated delivery of up to 630 L per heater.(b) Other types of storage water heaters with a capacity of up to 700 L per heater.(c) Heat exchange water heaters in accordance with AS 1361.NOTE: The reference to AS 1361 is made to positively identify the part
40、icular type of heatexchange water heater to which this Standard applies.(d) Instantaneous water heaters.(e) Other authorized water heaters.Illustrations used in this Standard are diagrammatic only and have been chosen withoutprejudice.Construction of hot water supply installations in accordance with
41、 this Standard is deemedto satisfy the requirements of AS 3500.4.1 and Clause G12, Water Supplies of theNew Zealand Building Code.1.2 REFERENCED DOCUMENTS The documents referred to in this Standard arelisted in Appendix A.1.3 DEFINITIONS For the purpose of this Standard the definitions given inAS/NZ
42、S 3500.0 and those below apply.1.3.1 Acceptable solutiondeemed to satisfy.1.3.2 Deemed to satisfywhere a provision states that the use of a particular material,component, method of construction or design satisfies a performance requirement of thisStandard. An equivalent material, component, method o
43、r design may be used if its meetsthe level of performance prescribed by the provisions concerned.1.3.3 Containerthe vessel, including fittings, in which the heated water is stored;sometimes referred to as a storage container, cylinder or tank.1.4 WATER QUALITY Water quality can have a significant ef
44、fect on theperformance and life of water heaters. Information on water quality may usually beobtained from the local water supply utility. Where water heaters are deemed unsuitablefor connection to a town water supply, advice shall be sought from the manufacturer whomay request a water sample for an
45、alysis (See Appendix B.)COPYRIGHTAccessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDEDAS/NZS 3500.4.2:1997 81.5 EQUIVALENT PIPE SIZES Where the nominal size of a pipe or fitting isspecified in this Standard, an equivalent pipe size, appropriate to the mate
46、rial being used,shall be selected from Table 1.1.1.6 WATER TEMPERATURE1.6.1 Storage temperature Hot water shall be stored at a minimum of 60Csoastoinhibit the growth of legionella bacteria.1.6.2 Sanitary fixtures delivery temperature All new hot water installations shall, atthe outlet of all sanitar
47、y fixtures used primarily for personal hygiene purposes deliver hotwater not exceeding(a) 45C for early childhood centres, primary and secondary schools and nursing homesor similar facilities for young, aged, sick or disabled persons; and(b) 50C in all other buildings.NOTE: Compliance with these tem
48、perature limits is optional for kitchen sinks and laundry tubs.TABLE 1.1EQUIVALENT PIPE SIZES GUIDESpecifiednominal sizeAcceptable equivalent sizeCopperStainlesssteelPE-XNominalPBNominalPP-RNominalCPVC(for NewZealand only)DNAS 1432DNNZS 3501NB DN De* De* De* De*10151810151810151015181216201518201216
49、20101520202532202532202532202532253240222840253240202532405040504050405050635063506350* Notation De nominal size in plastic pipe Standards. No size smaller than 15 in AS/NZS 2642.2.NOTE: Alternative sizes can be used providing they meet the performance requirements of this Standard.COPYRIGHTAccessed by ISONET - CHINA STATE BUREAU OF TECHNICAL SUPERVIS on 22 Feb 2008 AVAILABLE SUPERSEDED9 AS/NZS 3500.4.2:1997SECTION 2 MATERIALS AND PRODUCTS2.1 SCOPE OF SECTION This Section specifies material and product requirements.Alternative
