• AS/NZS 4234:2008

    Pending Revision
    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Heated water systems - Calculation of energy consumption

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

    Superseded date:  06-25-2021

    Language(s): 

    Published date:  08-21-2008

    Publisher:  Standards Australia

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    Abstract - (Show below) - (Hide below)

    Sets out a method of evaluating the annual energy performance of water heaters using a combination of test results for component performance and a mathematical model to determine the standardized annual purchased energy use. The procedure is applicable to electric, gas and solar water heaters with integral boosting or preheating into a conventional storage or instantaneous water heater and to heat pump water heaters. For solar and heat pump water heaters, displaced purchased energy relative to reference water heaters is also calculated.

    Scope - (Show below) - (Hide below)

    This Standard sets out a method of evaluating the annual energy performance of water heaters using a combination of test results for component performance and a mathematical model to determine the standardized annual purchased energy use. The procedure is applicable to electric, gas and solar water heaters with integral boosting or preheating into a conventional storage or instantaneous water heater and to heat pump water heaters. For solar and heat pump water heaters, displaced purchased energy relative to reference water heaters is also calculated. Solar and solar boosted heat pump water heater types not covered in the application of this Standard can be tested under AS 2984 to obtain an annual performance assessment.There are no product design or operation requirements in this Standard. System operating parameters specified in this Standard are only for the purpose of performance modelling.

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

    Committee CS-028
    Document Type Standard
    Product Note Pending Revision indicates that as a result of the Aged Standards review process, the document needs updating. If no project proposal, meeting the quality criteria, is received within the 12 month timeframe, the document shall be withdrawn.
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS 4234-1994.Jointly revised and designated AS/NZS 4234:2008. Originated as AS4234-1994. Jointly revised and designated AS/NZS4234:2008. Reissued incorporating Amendment No. 1 (March 2011). Reissued incorporating Amendment No. 2 (November 2011). Reissued incorporating Amendment No. 3 (November 2014).

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

    AS/NZS 2535.1:2007 Test methods for solar collectors Thermal performance of glazed liquid heating collectors including pressure drop (ISO 9806-1:1994, MOD) (Reconfirmed 2020)
    BS ISO 9459-4:2013 Solar heating. Domestic water heating systems System performance characterization by means of component tests and computer simulation
    AS 4552-2005 Gas fired water heaters for hot water supply and/or central heating
    AS 2984-1987 Solar water heaters - Method of test for thermal performance - Outdoor test method
    AS 3498-2003 Authorization requirements for plumbing products - Water heaters and hot-water storage tanks
    AS/NZS 2712:2007 Solar and heat pump water heaters - Design and construction (Reconfirmed 2020)
    AS/NZS 4692.1:2005 Electric water heaters Energy consumption, performance and general requirements (Reconfirmed 2016)
    AS 1056.1-1991 Storage water heaters General requirements
    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/NZS 3500.4:2015 Plumbing and drainage Heated water services
    AS/NZS 3500.5:2012 Plumbing and drainage Housing installations
    AS/NZS 5125.1:2010 Heat pump water heaters - Performance assessment Air source heat pump water heaters
    AS 5389(Int)-2013 Solar heating and cooling systems - Calculation of energy consumption
    AS/NZS 3500.4:2018 Plumbing and drainage Heated water services
    AS/NZS 5125.1:2014 Heat pump water heaters - Performance assessment Air source heat pump water heaters
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