We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
  • AS 1056.1-1991

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
    Add to Watchlist
    This Standard has been added successfully to your Watchlist
    Please visit My Watchlist to see all standards that you are watching.
    Please log in or to add this standard to your Watchlist.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    You have already added this standard to your Watchlist.
    Visit My Watchlist to view the full list.

    Storage water heaters General requirements

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  19-03-2021

    Language(s): 

    Published date:  01-01-1991

    Publisher:  Standards Australia

    Add to Watchlist

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    1 - AS 1056.1-1991 STORAGE WATER HEATERS - GENERAL REQUIREMENTS
    4 - PREFACE
    5 - CONTENTS
    6 - SECTION 1 SCOPE AND GENERAL
    6 - 1.1 SCOPE
    6 - 1.2 APPLICATION
    6 - 1.3 REFERENCED DOCUMENTS
    6 - 1.3.1 Standards
    7 - 1.3.2 Industrial code
    7 - 1.4 DEFINITIONS
    7 - 1.4.1 Electric storage water heater (hereinafter referred to as a ‚water heater™)
    7 - 1.4.2 Unvented water heater
    7 - 1.4.3 Vented water heater
    8 - 1.4.4 Displacement water heater
    8 - 1.4.5 Falling-level water heater
    8 - 1.4.6 Hot-water delivery
    8 - 1.4.7 Maximum water-supply pressure
    8 - 1.4.8 Maximum head
    8 - 1.4.9 Heating element
    8 - 1.4.10 Heating unit
    9 - 1.4.11 Container
    9 - 1.4.12 Shell
    9 - 1.4.13 Casing
    9 - 1.4.14 Corset
    11 - 1.4.15 Bonded coating
    11 - 1.5 COMPLIANCE WITH OTHER SPECIFICATIONS
    11 - 1.5.1 Electrical safety requirements
    11 - 1.5.2 Requirements for gas water heaters
    11 - 1.5.3 Requirements of water supply and other regulatory authorities
    11 - 1.6 RATED HOT-WATER DELIVERY/CAPACITY
    11 - 1.6.1 Electric water heaters
    11 - 1.6.2 Gas water heaters
    11 - 1.7 FACILITIES FOR MAINTENANCE
    12 - 1.8 CLEANLINESS IN MANUFACTURE
    13 - SECTION 2 CONSTRUCTION REQUIREMENTS
    13 - 2.1 FIXING OF HEATING UNITS TO SHELL
    15 - 2.2 SACRIFICIAL ANODES
    15 - 2.2.1 Shells lined with vitreous enamel
    15 - 2.2.2 Shells lined with bonded plastics
    15 - 2.3 FITTINGS IN CONTACT WITH WATER
    15 - 2.4 THERMAL INSULATION
    16 - 2.5 CORSET
    16 - 2.6 CASING
    17 - 2.7 HYDROSTATIC OVERPRESSURE WITHSTAND
    17 - 2.7.1 Electric water heaters
    17 - 2.7.2 Gas water heaters
    17 - 2.8 PRESSURE FATIGUE WITHSTAND (OF AN UNVENTED CONTAINER)
    17 - 2.8.1 Electric water heaters
    17 - 2.8.2 Gas water heaters
    17 - 2.9 EXTERNAL TORQUE WITHSTAND
    18 - SECTION 3 ELECTRICAL COMPONENTS
    18 - 3.1 HEATING UNITS
    18 - 3.1.1 Rating of heating units
    18 - 3.1.2 Tubular-sheathed immersion heating units
    19 - 3.1.3 Bobbin heating units
    19 - 3.1.4 Heating unit support
    19 - 3.1.5 Location of heating unit
    20 - 3.2 THERMOSTATS AND THERMAL CUTOUTS
    20 - 3.2.1 General
    20 - 3.2.2 Thermostat setting
    20 - 3.2.3 Immersed-probe thermostats
    20 - 3.2.4 Surface-contact thermostats
    20 - 3.2.5 Thermal cut-out
    21 - SECTION 4 FEED TANKS AND WATER FITTINGS
    21 - 4.1 ATTACHED FEED TANK
    21 - 4.1.1 General
    21 - 4.1.2 Materials
    21 - 4.1.3 Design and construction
    21 - 4.1.4 Delivery
    21 - 4.1.5 Water level
    22 - 4.1.6 Float-control valve
    22 - 4.1.7 Overflow
    22 - 4.1.8 Cover
    22 - 4.2 WATER FITTINGS
    22 - 4.2.1 Inside diameter
    22 - 4.2.2 Materials
    22 - 4.2.3 Plumbing connections to water heater
    22 - 4.3 WATER PIPES
    22 - 4.4 DRAINAGE FACILITIES
    23 - SECTION 5 MARKING AND INSTALLATION INSTRUCTIONS
    23 - 5.1 MARKING
    23 - 5.1.1 General
    23 - 5.1.2 Boosting unit
    23 - 5.2 INSTRUCTIONS FOR INSTALLATION AND MAINTENANCE
    25 - SECTION 6 DETERMINATION OF COMPLIANCE
    25 - 6.1 TYPE TESTS
    25 - 6.1.1 General
    25 - 6.1.2 Product documentation
    25 - 6.2 ROUTINE TESTS
    27 - APPENDIX A - INFORMATION TO BE SUPPLIED WITH ENQUIRY AND ORDER
    28 - APPENDIX B - METHOD FOR THE DETERMINATION OF HEAT LOSS
    28 - B1 SCOPE
    28 - B2 PRINCIPLE
    28 - B3 TEST APPARATUS
    28 - B4 TEST CONDITIONS
    28 - B4.1 Set-up
    28 - B4.2 Air temperature
    28 - B4.3 Air circulation
    29 - B4.4 Thermostat setting
    29 - B4.5 Test voltage
    29 - B4.6 Energization of heating units
    29 - B5 PROCEDURE
    30 - B6 CALCULATIONS
    30 - B7 REPORT
    31 - B8 EXAMPLES
    32 - APPENDIX C - METHOD FOR THE DETERMINATION OF HOT-WATER DELIVERY
    32 - C1 SCOPE
    32 - C2 PRINCIPLE
    32 - C3 TEST APPARATUS
    32 - C4 TEST CONDITIONS
    32 - C4.1 General
    32 - C4.2 Installation of water heater
    33 - C4.3 Insulation of fittings
    33 - C4.4 Cold-water supply
    33 - C4.5 Draw-off facilities
    33 - C4.6 Thermostat setting
    34 - C4.7 Energization of heating units
    34 - C5 PROCEDURE
    34 - C6 REPORT
    35 - APPENDIX D - TYPICAL PRODUCT SPECIFICATION FOR A WATER HEATER

    Abstract - (Show below) - (Hide below)

    Specifies general construction and performance requirements for electric storage water heaters of 25 L to 630 L rated hot water delivery. (Requirements for gas water heaters are specified only by reference to Code AG 102 published by AGA/ALPGA.) To be read in conjunction with AS 1056.2 or AS 1056.3 as appropriate.

    Scope - (Show below) - (Hide below)

    This Standard specifies requirements for:(a) Storage water heaters heated solely by electricity (hereinafter called 'water heaters') having rated hot-water deliveries within the range 25 L to 630 L and having heating units of the tubular-sheathed immersion type or the bobbin type.NOTES: Where non-electric supplementary heating, e.g. from a solar collector or a slow combustion stove, is used,additional requirements may be necessary.(b) Gas storage water heaters by cross-reference to Code AG 102 published by The Australian Gas Association and the Australian Liquefied Petroleum Gas Association (see Clauses 1.3.2 and 1.5.2).This Standard does not apply to heat-exchange water heaters (see AS 1361).NOTES:1. Water heaters having deliveries in excess of 630 L generally have special requirements. Intending purchasers of such water heaters are advised to include in their specification such requirements of this Standard as are relevant to their needs.2. For the installation of household type hot-water systems, see AS 3500.4.3. Information to be supplied with enquiries and orders for electric water heaters is given in Appendix A.

    General Product Information - (Show below) - (Hide below)

    Committee EL-020
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    Amendment 3 to AS 1056.1-1991 see DR 96021. Draft Amendment 5 to AS 1056.1-1991 see DR 03367 AS 1056.1 first published as part of AS C316-1957.Second edition 1965.Third edition 1970.AS C316-1970 revised and redesignated AS 1056-1972.AS C316-1970 withdrawn 1974.Second edition AS 1056-1977.AS 1056-1977 revised and redesignated in part as AS 1056.1-1985.Second edition 1991. AS 1056.1 first published as part of AS C316-1957. Second edition 1965. Third edition 1970. AS C316-1970 revised and redesignated AS 1056-1972. AS C316-1970 withdrawn 1974. Second edition AS 1056-1977. AS 1056-1977 revised and redesignated in part as AS 1056.1-1985. Second edition 1991.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS/NZS 3869:1999 Domestic solid fuel burning appliances - Design and construction
    AS 2832.4-2006 Cathodic protection of metals Internal surfaces
    MP 52-2005 Manual of authorization procedures for plumbing and drainage products
    AS 2971-2007 Serially produced pressure vessels
    AS 3533.1-1997 Amusement rides and devices - Design and construction
    AS/NZS 3500.4:2003 Plumbing and drainage Heated water services
    AS 4560-2004 Gas pool heaters
    AS/NZS 3500.4.2:1997 National Plumbing and Drainage Hot water supply systems - Acceptable solutions
    AS 4037-1999 Pressure equipment - Examination and testing (Reconfirmed 2016)
    AS 1361-1995 Electric heat-exchange water heaters - For domestic applications (Reconfirmed 2016)
    AS/NZS 2712:2007 Solar and heat pump water heaters - Design and construction (Reconfirmed 2020)
    AS/NZS 3500.5:2000 National Plumbing and Drainage - Domestic installations
    AS 4628-2005 Pressure and temperature limit devices for use with gas burners
    AS 1210-1997 Pressure vessels
    AS/NZS 1056.4:1997 Storage water heaters Daily energy consumption calculations for electric types
    AS/NZS 1200:2000 Pressure equipment
    AS/NZS 4692.2:2005 Electric water heaters Minimum Energy Performance Standard (MEPS) requirements and energy labelling (Reconfirmed 2016)
    AS 3142-1994 Approval and test specification - Electric water heaters
    BS ISO 9459-4:2013 Solar heating. Domestic water heating systems System performance characterization by means of component tests and computer simulation
    ISO 9459-4:2013 Solar heating Domestic water heating systems Part 4: System performance characterization by means of component tests and computer simulation

    Standards Referencing This Book - (Show below) - (Hide below)

    AS 1056.3-1991 Storage water heaters - Specific requirements for water heaters with composite shells
    AS/NZS 1056.4:1997 Storage water heaters Daily energy consumption calculations for electric types
    AS 1056.2-1985 Storage water heaters - Specific requirements for water heaters with single shells
    AS 1210-2010 Pressure vessels (Reconfirmed 2021)
    AS/NZS 1200:2000 Pressure equipment
    AS 4037-1992 Boilers and pressure vessels - Examination and testing
    AS 4628-2005 Pressure and temperature limit devices for use with gas burners
    AS 1308-1987 Electric water heaters - Thermostats and thermal cutouts (Reconfirmed 2016)
    AS/NZS 3500.4.2:1997 National Plumbing and Drainage Hot water supply systems - Acceptable solutions
    AS 4234-1994 Solar water heaters - Domestic and heat pump - Calculation of energy consumption
    AS/NZS 4234:2008 Heated water systems - Calculation of energy consumption
    AS/NZS 1200:1994 Pressure equipment
    MP 52-1997 Manual of authorization procedures for plumbing and drainage products
    AS 3533.1-1997 Amusement rides and devices - Design and construction
    AS 1361-1995 Electric heat-exchange water heaters - For domestic applications (Reconfirmed 2016)
    AS 2712-1993 Solar water heaters - Design and construction
    AS/NZS 4692.2:2005 Electric water heaters Minimum Energy Performance Standard (MEPS) requirements and energy labelling (Reconfirmed 2016)
    AS 3533.1-2009 Amusement rides and devices Design and construction
    AS/NZS 3500.5:2000 National Plumbing and Drainage - Domestic installations
    AS 3500.4-1994 National Plumbing and Drainage Code Hot water supply systems
    AS 1210-1997 Pressure vessels
    AS/NZS 3869:1999 Domestic solid fuel burning appliances - Design and construction
    MP 52-2001 Manual of authorization procedures for plumbing and drainage products
    AS/NZS 2712:2002 Solar and heat pump water heaters - Design and construction
    AS 2832.4-1994 Cathodic protection of metals - Internal surfaces
    AS 3142-1994 Approval and test specification - Electric water heaters
    AS 2971-2002 Serially produced pressure vessels
    AS 2832.4-2006 Cathodic protection of metals Internal surfaces
    AS 4560-2004 Gas pool heaters
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective