Standard
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AS 3498:2020
[Current]Safety and public health requirements for plumbing products — Water heaters and hot-water storage tanks
The objective of this Standard is to provide uniform requirements that regulatory authorities may apply in Australia for basic safety and public health issues relating to the use of water heaters and hot-water storage tanks.
Published: 06/03/2020
Pages: 37
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Product conformity
5 Materials in contact with drinking water
6 Design and construction of water-carrying components
6.1 Inlet and outlet plumbing connections
6.2 Strength of components
6.3 Safe failure
6.4 Contamination of drinking water supply
7 Control and protection
7.1 General requirements and conditions
7.2 Inhibition of growth of Legionella bacteria
7.3 Temperature control requirements
7.3.1 Requirements for 45 °C-limited water heaters
7.3.1.1 Temperature adjustment
7.3.1.2 Delivery temperature stability
7.3.1.3 User temperature adjustment indication and sensitivity
7.3.2 Requirements for 50 °C-limited water heaters
7.3.2.1 Temperature adjustment
7.3.2.2 Delivery temperature stability
7.3.3 Endurance
7.3.4 Confirmation of control strategy
7.3.5 Required tests and testing sequence
7.4 Unvented storage water heaters
7.5 Unvented instantaneous water heaters
7.6 Vented storage water heaters
7.7 Heat-exchange water heaters
7.8 Uncontrolled storage water heaters
7.9 Instantaneous water heaters open to the atmosphere
7.10 Uncontrolled auxiliary water heaters
7.11 Unvented hot-water storage tanks
7.12 Vented hot-water storage tanks
7.13 Boiling-water dispensers
8 Markings
8.1 General
8.2 Water heaters
8.2.1 Common marking requirements
8.2.2 Additional marking requirements for 45 °C-limited water heaters
8.2.3 Additional marking requirements for 50 °C-limited water heaters
8.2.4 Additional marking requirements for appliances that are not 45 °C-limited water heaters or 50 °C-limited water heaters
8.3 Hot-water storage tanks
9 Instructions
Appendix A
A.1 Scope
A.2 Principle
A.3 Information to be included with product
A.4 Apparatus
A.4.1 General
A.4.2 Flow measurement
A.4.3 Pressure measurement
A.4.4 Temperature measurement
A.4.4.1 Temperature sensors
A.4.4.2 Delivery temperature measurement locations
A.4.5 Sampling interval
A.5 Test procedures
A.5.1 General
A.5.2 Test for response to heated water flow variation through sanitary fixture used primarily for personal hygiene purposes
A.5.2.1 General
A.5.2.2 Procedure
A.5.3 Test for response to heated water flow variation through sanitary fixture not used primarily for personal hygiene purposes
A.5.3.1 General
A.5.3.2 Procedure
A.5.4 Test for response to user temperature adjustment
A.5.4.1 General
A.5.4.2 Procedure
A.5.5 Test for start-up from non-ambient conditions (45 °C-limited water heaters only)
A.5.5.1 General
A.5.5.2 Procedure
A.5.6 Test for start-up from cold
A.5.6.1 General
A.5.6.2 Procedure
A.5.6.3 Additional procedure for appliances fitted with an installer temperature adjustment
A.5.6.3.1 General
A.5.6.3.2 Test procedure
A.5.7 Confirmation of control strategy
A.5.8 Test report
Appendix B
B.1 Scope
B.2 Principle
B.3 Test procedure
B.3.1 General
B.3.2 Endurance test
B.3.3 Test report
Appendix C
C.1 Scope
C.2 Principle
C.3 Procedure
C.3.1 General
C.3.2 Adjusted temperature
C.3.3 Analysis
C.3.4 Cumulative scald factor
Appendix D
D.1 Mathematical function for scalding effect of hot water
D.2 Determining cumulative scalding effect
D.3 Considerations for accurate cumulative scalding effect assessment
Appendix E
E.1 Scope
E.2 Principle
E.3 Test procedure
E.3.1 Appliances with rotational user temperature adjustment
E.3.2 Appliances with push-button user temperature adjustment
E.4 Test report
Appendix F
Bibliography
Cited references in this standard
[Current]
Household and similar electrical appliances - Safety, Part 2.40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers
[Current]
Household and similar electrical appliances - Safety, Part 2.35: Particular requirements for instantaneous water heaters
[Current]
Household and similar electrical appliances - Safety, Part 2.21: Particular requirements for storage water heaters (IEC 60335-2-21 Ed 7, MOD)
[Current]
Gas appliances, Part 1.2: Gas fired water heaters for hot water supply and/or central heating
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