Part B2 Heated water services
Introduction to this Part
This Part sets out the requirements for any part of a heated water service of a property that is connected to the drinking water supply. It covers from the point of connection to the points of discharge.
Objectives
B2O1
Objective
2019: BO2
The Objective of this Part is to—
- safeguard people from illness, injury or loss (including loss of amenity) due to the failure of a heated water installation; and
- ensure that a heated water installation is suitable; and
- conserve water; and
- safeguard the environment; and
- reduce greenhouse gas emissions; and
- safeguard public and private infrastructure; and
- ensure that a heated water installation is designed and is capable of being maintained so that throughout its serviceable life it will continue to satisfy Objectives (a) to (f).
Functional Statements
B2F1
Heated water supply
2019: BF2.1
Sanitary fixtures, sanitary appliances and supply outlets provided with heated water must have a safe and adequate piped heated water supply.
B2F2
Heated water installations
2019: BF2.2
The heated water supply must be conveyed through plumbing installations in a way that—
- minimises any adverse impact on building occupants, the Network Utility Operator’s infrastructure, property and the environment; and
- facilitates the conservation of water.
B2F3
Greenhouse gas emissions
2019: BF2.3
To reduce greenhouse gas emissions, to the degree necessary, a heated water service is to—
- be capable of efficiently using energy; and
- obtain its heating energy from—
- a low greenhouse gas intensity energy source; or
- an on-site renewable energy source; or
- another process as reclaimed energy.
Explanatory information
The greenhouse gas intensity of energy sources vary. For example, natural gas has a low greenhouse gas intensity compared with electricity generated from coal.
For the purposes of B2F3(b), the renewable energy source must be on-site (not GreenPower) and includes, but is not limited to solar, wind, hydroelectric, wave action and geothermal.
Performance Requirements
B2P1
Heated water supply
2019: BP2.1
A heated water service must be connected to a drinking water supply.
Applications
B2P1 applies to a heated water service used for human consumption, food preparation, food utensil washing or personal hygiene.
B2P2
Scald prevention
2019: BP2.2
Heated water supplied by a heated water service must be delivered from the point of discharge of fixtures and appliances at a temperature which is unlikely to scald.
Applications
B2P2 applies to fixtures and appliances used primarily for personal hygiene.
B2P3
Velocity
2019: BP2.3
The water velocity in heated water service pipework up to 65 °C must not exceed—
- 3.0 m/s for more than 1% of the time that water is required during the peak hour in reticulated heated water systems; and
- 1.2 m/s for the flow and 1.0 m/s for the return of a copper circulatory heated water service for more than 1% of the time that water is required during the peak hour; and
- 1.0 m/s for the flow and return of a circulatory heated water service using other materials for more than 1% of the time that the water is required during the peak hour.
VIC B2P3 Velocity2019: BP2.3
The water velocity in heated water service pipework up to 65 °C must not exceed—
- 3 m/s for more than 1% of the time that water is required during the peak hour in non-circulatory heated water systems; and
- 1.2 m/s for the flow and 1.0 m/s for the return of a copper circulatory heated water service for more than 1% of the time that water is required during the peak hour; and
- 1.0 m/s for the flow and return of a circulatory heated water service using other materials for more than 1% of the time that the water is required during the peak hour.
Explanatory information
High velocities in heated water services can be a contributing factor to the erosion/corrosion of pipework. Consideration should be given to the appropriate velocities for the building based on water temperature, water chemistry and materials used.
B2P4
Access and isolation
2019: BP2.3
VIC B2P4 Access and isolation2019: BP2.3
B2P5
Pressure relief and temperature limitation
2019: BP2.4
Containers used for producing and/or storing heated water are to relieve excessive pressure and avoid flash steam production by—
- relieving pressure so that the maximum rated working pressure, or 1400 kPa, whichever is the lesser, is not exceeded; and
- limiting water temperatures to a maximum of 99 °C; or
- other suitable means providing an equivalent level of safety to (a) and (b).
Applications
B2P5(a) has a tolerance of +5% or 14 kPa whichever is the greater.
B2P6
Legionella control
2019: BP2.5
Heated water must be stored and delivered under conditions which avoid the likelihood of the growth of a Legionella bacteria count greater than or equal to 10 Legionella colony forming units (cfu) per millilitre.
Explanatory information
A risk assessment should be undertaken for the control and management of Legionella in heated water systems in aged care, health-care and other similar facilities with high risk occupants.
B2P7
Energy use and source
2019: BP2.6
Energy use and source
- The heated water service and its usage.
- The geographic location of the building.
- The location of the heated water service.
- The energy or water source.
VIC B2P7 Energy use and source2019: BP2.6
Explanatory information
Excessive ‘dead water’ draw-off, i.e. where cooled water from the supply pipe is drained off prior to delivery of heated water, can result in water and energy wastage.
To improve the efficiency of heated water systems, the design should consider factors such as the number of outlets, their purpose and expected typical usage, and the distance between the water heater and each of the outlets. The water heater should be positioned nearest to the most used outlets, or installed to provide consistent coverage of the building. Where this is not viable, the use of multiple water heaters or a flow and return pipe loop may need to be considered.
B2P7(2) permits the energy source of the heated water service to be considered. This means that the net energy obtained from renewable energy sources such as solar, geothermal, wind, and biofuels may be considered as 'free' energy in calculating the energy consumption. Similarly, heat reclaimed from another 'free' source such as a by-product from co-generation type processes as well as other industrial processes, which could otherwise be rejected from the building, could be considered as 'free' energy in calculating the energy consumption.
B2P8
Temperature
2019: BP2.3
A heated water service must ensure that heated water is provided at appropriate temperatures for the correct functioning of the fixture or appliance.
B2P9
Pressure
2019: BP2.3
The points of discharge for a heated water service must—
- have—
- a working pressure of not less than 50 kPa: and
- a static pressure within the building of not more than 500 kPa; or
- have water pressures suitable for the correct functioning of the fixture or appliance where water pressures outside of (a)(i) and (a)(ii) are required.
Exemptions
B2P9(a)(i) and B2P9(a)(ii) do not apply to existing low-pressure gravity only water services.
Pressure
The points of discharge for a heated water service must—
- have—
- a working pressure of not less than 50 kPa; and
- a static pressure within the building of not more than 500 kPa; or
- have water pressures suitable for the correct functioning of the fixture or appliance where water pressures are outside of (a)(i) and (a)(ii) are required.
B2P10
Uncontrolled discharge
2019: BP2.3
A heated water service must avoid failure or uncontrolled discharge.
B2P11
Water efficiency
New for 2022
A heated water service must ensure the efficient use of drinking water by limiting water use from a tap or outlet for a shower, basin, kitchen sink or laundry trough to a flow rate of not more than 9 l/m.
Verification Methods
B2V1
Heated water storage temperature
2019: BV2.2
Compliance with B2P6 is verified for each heated water storage system when the water heater is designed such that all water is subjected to a temperature-dependent minimum exposure period as specified in Table B2V1 within 7 days before passing through the water-heating appliance's heated water outlet.
Temperature | Minimum exposure period |
---|---|
70 °C or greater | 1 second |
66 °C | 2 minutes |
60 °C | 32 minutes |
Deemed-to-Satisfy Provisions
B2D1
Deemed-to-Satisfy Provisions
2019: B2.1
- the Network Utility Operator’s drinking water supply; or
- an alternative drinking water supply.
Notes
There are no Deemed-to-Satisfy Provisions for warm water systems.
B2D2
Water heater in a heated water supply system
2019: B2.2
- A natural gas or LPG water heater, either instantaneous, continuous flow or storage, that has an energy rating of 5 stars or more.
- A natural gas or LPG boosted solar water heater, with a total tank volume of not more than 700 litres, that is eligible for any number (one or more) of STCs.
- An electric boosted solar water heater or electric heat pump water heater (air source or solar boosted), with a single tank, that is eligible for the minimum small-scale technology certificates shown in SA Table B2D2.
- A wood combustion water heater, with no additional heating mechanisms, with a total tank volume of not more than 700 litres.
- A wood combustion boosted solar water heater, with no additional heating mechanisms, with a total tank volume of not more than 700 litres.
- A water heater complying with the requirements set out in (1).
- An electric water heater with a rated hot water delivery of no greater than 250 litres.
- An electric instantaneous water heater, having a water storage capacity no greater than one litre and total electrical input no greater than 15.0 kW.
- Water heaters serving buildings other than Class 1.
- Repairs to water heaters including:
- Like for like replacements that are the result of manufacturer, supplier or installer warranty arrangements.
- Replacement of a single major component of a solar or electric heat pump water heater (for example, a heat pump compressor/evaporator unit, a solar collector, or a storage tank).
- Secondary electric water heaters of up to 55 litres rated delivery, which do not serve a shower or bath.
- Temporary electric water heaters of up to 55 litres rated delivery, for a period not exceeding 60 days, pending installation of a complying water heater.
- An electric or gas vented (gravity fed) water heater, located in a roof space of an established Class 1 building, of no greater than 250 litres rated hot water delivery.
- A gas water heater installed entirely within a fully enclosed roof space, room or attached garage of an established Class 1 building, providing the water heater has an energy rating of 3 stars or more.
Year | Tank volume of 400 litres or more and not more than 700 litres | Tank volume of more than 220 litres and less than 400 litres | Tank volume of not more than 220 litres |
---|---|---|---|
2022 | 34 in zone 3* and/or 32 in zone 4 | 24 in zone 3 and/or 23 in zone 4 | 15 in zone 3 and/or 14 in zone 4 |
2023 | 30 in zone 3 and/or 28 in zone 4 | 21 in zone 3 and/or 20 in zone 4 | 13 in zone 3 and/or 12 in zone 4 |
2024 | 26 in zone 3 and/or 25 in zone 4 | 18 in zone 3 and/or 18 in zone 4 | 11 in zone 3 and/or 11 in zone 4 |
2025 | 22 in zone 3 and/or 21 in zone 4 | 16 in zone 3 and/or 15 in zone 4 | 10 in zone 3 and/or 9 in zone 4 |
Table Notes
* Zones are defined by the Clean Energy Regulator
Explanatory information: Connection to a reticulated gas supply
A property is connected to a reticulated gas supply if it has a piped connection to a gas distribution system and this connection is capable of supplying gas to gas equipment and/or appliances.
A property is not connected to a reticulated gas supply if:
- It does not have a piped connection to a gas distribution system; or
- It has a piped connection to a gas distribution system but this connection is not capable of supplying gas to gas equipment and/or appliances (for example, if the supply has been physically disconnected at the meter by the gas network operator).
Reticulated gas includes:
- Reticulated natural gas; or
- Reticulated compressed gas of some other type (including LPG, SNG or TLP gas).
Explanatory information: Gas water heaters
The energy ratings for natural gas and LPG water heaters are available at: http://www.aga.asn.au/product_directory
Explanatory information: Solar water heaters and electric heat pump water heaters
STCs are Small-scale Technology Certificates. References to Renewable Energy Certificates (RECs) refer equally to STCs. The number of STCs is provided for each eligible model of solar water heater and electric heat pump water heater at: https://www.cleanenergyregulator.gov.au/RET/Scheme-participants-and-industry/Agents-and-installers/Small-scale-systems-eligible-for-certificates/Register-of-solar-water-heaters
The STC values specified in Section SA B2D2 for either CER Zones 3 or 4 may be used to demonstrate compliance, regardless of the actual zone in which the water heater is to be installed.
Water heater in a heated water supply system
In a new Class 1 or Class 10 building—
- a water heater in a heated water supply system must be—
- a solar water heater complying with (b); or
- a heat pump water heater complying with (b); or
- a gas water heater complying with (c); or
- an electric resistance water heater complying with AS/NZS 3500.4; or
- a wood fired thermosiphon water heater or direct fired water heater each complying with AS/NZS 3500.4; and
- a solar water heater and a heat pump water heater must have—
- for a building with 1 or 2 bedrooms—
- at least 14 Small-scale Technology Certificates for the zone where it is being installed; or
- an energy saving of not less than 40% in accordance with AS/NZS 4234 for a "small" load system; and
- for a building with 3 or 4 bedrooms—
- at least 22 Small-scale Technology Certificates for the zone where it is being installed; or
- an energy saving of not less than 60% in accordance with AS/NZS 4234 for a "medium" load system; and
- for a building with more than 4 bedrooms—
- at least 28 Small-scale Technology Certificates for the zone where it is being installed; or
- an energy saving of not less than 60% in accordance with AS/NZS 4234 for a “large” load system; and
- for a building with 1 or 2 bedrooms—
- a gas water heater must be rated not less than 5 stars in accordance with AS 4552.
Water heater in a heated water supply system
Water heater in a heated water supply system
Water heater in a heated water supply system
Compliance is not required with the national provisions of B2D2 as the sources of energy for new Class 1 and 10 buildings are regulated under BASIX.
- a solar water heater complying with (2); or
- a heat pump water heater complying with (2); or
- a gas water heater complying with (3); or
- an electric resistance water heater only in the circumstances described in (4); or
- a wood fired thermosiphon water heater or direct fired water heater each complying with AS/NZS 3500.4.
- Table B2D2a, for the minimum Small-scale Technology Certificates for the installation zone; or
- Table B2D2b, for the minimum energy savings calculated in accordance with AS/NZS 4234.
- the building has—
- not more than 1 bedroom; and
- not more than 1 electric resistance water heater installed; or
- the building has—
- a water heater that complies with (2) or (3); and
- not more than 1 electric resistance water heater installed; or
- the greenhouse gas emission intensity of the public electricity supply is low.
VIC B2D2 Water heater in a heated water supply system2019: B2.2
Number of bedrooms in the building | 2022 | 2023 | 2024 | 2025 |
---|---|---|---|---|
1 or 2 | 12 | 11 | 9 | 8 |
3 or 4 | 19 | 17 | 15 | 13 |
4 or more | 25 | 22 | 19 | 16 |
Number of bedrooms | Minimum energy saving |
---|---|
1 or 2 | 40% for a ‘small load’ system |
2 or 3 | 60% for a ‘medium load’ system |
4 or more | 60% for a ‘large load’ system |
B2D3
Layout of taps
2019: B2.3
Where both a heated water tap and a cold water tap are installed, the heated water tap must be installed to the left of, or above, the cold water tap if—
- each tap controls a separate outlet; or
- both taps control a combined flow of water delivered through a single outlet.
Explanatory information
To reduce the likelihood of scalding in a bath, consideration should be given to installing taps out of reach of the bath occupants. This would reduce the likelihood of children accidentally turning the heated water on or adjusting the water temperature.
To reduce the likelihood of scalding, consideration should be given to the following when installing heated water taps in a shower:
- Heated water taps such as a quarter turn tap should be located in a manner, that to be turned on, requires the tap lever to be turned upwards, reducing the likelihood of accidentally turning the heated water on in the event of a slip or fall. Likewise, cold water taps should be located in a manner, so that the lever operator is turned down to turn on the cold water.
- Mixing taps, where the lever is lifted to start the flow of water, should be considered because if a slip or fall occurred, there is greater likelihood that the temperature would either be reduced or the tap turned off.
- The location of shower taps should be positioned at a height so that they cannot be operated by young children.
- Positioning the taps in a specific recess may reduce the likelihood of accidentally altering the water temperature in the event of a slip or fall and is considered a suitable recommendation for bathrooms provided for the elderly or infirm.
B2D4
Water efficiency
2019: B2.4
A tap or outlet used for a shower, basin, kitchen sink, or laundry trough must be a minimum of 3 Star WELS rated and discharge not more than 9 litres per minute.
Exemptions
The requirements of B2D4 do not apply to a shower intended to provide rapid drenching of a person for emergency purposes, such as chemical removal.
Applications
A heated water outlet includes an outlet which delivers any combination of heated water and cold water.
Explanatory information
AS/NZS 6400 Water Efficient Products - Rating and labelling, provides the basis for the rating and labelling of a range of products under the mandatory Water Efficiency Labelling and Standards (WELS) Scheme.
B2D4 outlines the minimum level of water efficiency for certain plumbing products and fixtures, however the adoption of products and technologies of greater efficiency should be considered.
B2D5
Maximum delivery temperature
2019: B2.5
The delivery temperature of heated water at the outlet of each sanitary fixture must be—
- not more than 45 °C in any—
- residential part of an aged care building; or
- patient care area in a health-care building; or
- part of an early childhood centre, or primary or secondary school, that is used by children; or
- designated accessible facility in a common area of a Class 2 building, or in any part of a Class 3, Class 5, Class 6, Class 7, Class 8, Class 9a, 9b, 9c or Class 10 building; or
- not more than 50 °C in all other cases.
Applications
B2D5 applies to all heated water installations intended for personal hygiene.
Exemptions
B2D5(b) does not apply to the replacement of a water heater unit in the same location where the original installation did not require a temperature control valve.
Explanatory information
Scenarios covered in B2D5 may include where—
- a heated water service is installed on the premises for the first time; or
- the water heater forming part of an existing heated water service is—
- replaced with a like-for-like water heater; or
- replaced with a different type of water heater; or
- relocated, and is reconnected to, some or all of the sanitary fixtures to which it was previously connected; or
- more than one existing sanitary fixture is replaced with new similar fixtures; or
- an existing heated water service on the premises is altered or extended to serve additional sanitary fixtures.
Consideration should be given to the intended occupants of a building when commissioning the heated water delivery temperature. For example, if the occupants of a Class 1 building are older adults or young children, a lower temperature than specified in B2D5(b) should be considered.
Maximum delivery temperature
- not more than 45 °C in any—
- residential part of an aged care building; or
- patient care area in a health-care building; or
- part of an early childhood centre, or primary or secondary school, that is used by children; or
- designated accessible facility in a common area of a Class 2 building, or in any part of a Class 3, Class 5, Class 6, Class 7, Class 8, Class 9a, 9b, 9c or Class 10 building; or
- not more than 50 °C in all other cases.
Applications
B2D5 applies to all heated water installations intended for personal hygiene.
Explanatory information
Scenarios covered in B2D5 may include where—
- a heated water service is installed on the premises for the first time; or
- a water heater forming part of an existing heated water service is—
- replaced with a like-for-like water heater; or
- replaced with a different type of water heater; or
- relocated, and is reconnected to, some or all of the sanitary fixtures to which it was previously connected; or
- more than one existing sanitary fixture is replaced with new similar fixtures; or
- an existing heated water service on the premises is altered or extended to serve additional sanitary fixtures.
Consideration should be given to the intended occupants of a building when commissioning the heated water delivery temperature. For example, if the occupants of a Class 1 building are older adults or young children, a lower temperature than specified in B2D5(b) should be considered.
A duty of care should be exercised by installers to explain to clients the merits of temperature control for heated water delivered to existing sanitary fixtures used primarily for personal hygiene purposes.
Maximum delivery temperature
The delivery temperature of heated water at the outlet of each sanitary fixture must be—
- not more than 45°C in any—
- residential part of an aged care building; or
- patient care area in a health-care building; or
- part of an early childhood centre, or primary or secondary school, that is used by children; or
- any facility designated for use by people with a disability; or
- not more than 50°C in all other cases.
Applications
B2D5 applies to all heated water installations for personal hygiene purposes.
Maximum delivery temperature
The delivery temperature of heated water at the outlet of each sanitary fixture must be—
- not more than 45 °C in any—
- residential part of an aged care building; or
- patient care area in a health-care building; or
- part of an early childhood centre, or primary or secondary school, that is used by children; or
- designated accessible facility in a common area of a Class 2 building, or in any part of a Class 3, Class 5, Class 6, Class 7, Class 8, Class 9a, Class 9b, Class 9c or Class 10 building; or
- not more than 50 °C in all other cases.
Applications
B2D5 applies to all heated water installations intended for personal hygiene.
Explanatory information
Scenarios covered in B2D5 may include where—
- a heated water service is installed on the premises for the first time; or
- the water heater forming part of an existing heated water service is—
- replaced with a like-for-like water heater; or
- replaced with a different type of water heater; or
- relocated, and is reconnected to, some or all of the sanitary fixtures to which it was previously connected; or
- more than one existing sanitary fixture is replaced with new similar fixtures; or
- an existing heated water service on the premises is altered or extended to serve additional sanitary fixtures.
Consideration should be given to the intended occupants of a building when commissioning the heated water delivery temperature. For example, if the occupants of a Class 1 building are older adults or young children, a lower temperature than specified in B2D5(b) should be considered.
B2D6
Temperature control devices
2019: B2.6
(a) thermostatic mixing valve; or
(b) thermostatically controlled tap.
- thermostatic mixing valve; or
- thermostatically controlled tap; or
- tempering valve; or
- temperature limited water heater.
Applications
B2D6 applies to all heated water installations intended for personal hygiene.
Explanatory information
Scenarios covered by B2D6 may include where—
• a heated water service is installed on the premises for the first time; or
• the water heater forming part of an existing heated water service is—
• replaced with a like-for-like water heater; or
• replaced with a different type of water heater; or
• relocated, and is reconnected to, some or all of the sanitary fixtures to which it was previously connected; or
• more than one existing sanitary fixture is replaced with new similar fixtures; or
• an existing heated water service on the premises is altered or extended to serve additional sanitary fixtures.
Temperature control devices
- thermostatic mixing valve; or
- thermostatically controlled tap.
- thermostatic mixing valve; or
- thermostatically controlled tap; or
- tempering valve; or
- temperature limited water heater limited to 50°C in accordance with AS 3498.
Applications
B2D6 only applies to new and replacement heated water installations.
Exemptions
B2D6 does not apply to the replacement of a single heated water storage unit within a range or bank of heaters.
Temperature control devices
- thermostatic mixing valve; or
- thermostatically controlled tap.
- thermostatic mixing valve; or
- thermostatically controlled tap; or
- tempering valve; or
- temperature limited water heater with a maximum delivery temperature of 50°C marked in accordance with AS 3498.
Applications
B2D6 only applies to—
- all new heated water services; or
- replacing a hot water heater, regardless of the type or location of the heater.
Exemptions
A temperature control device need not be installed if one or more, but not all, heating units in a manifold water heater are replaced.
Temperature control devices
- thermostatic mixing valve; or
- thermostatically controlled tap.
- thermostatic mixing valve; or
- thermostatically controlled tap; or
- tempering valve; or
- temperature limited water heater.
Applications
B2D6 applies to all heated water installations intended for personal hygiene.
Explanatory information
Scenarios covered by B2D6 may include where—
- a heated water service is installed on the premises for the first time; or
- the water heater forming part of an existing heated water service is—
- replaced with a like-for-like water heater; or
- replaced with a different type of water heater; or
- relocated, and is reconnected to, some or all of the sanitary fixtures to which it was previously connected; or
- more than one existing sanitary fixture is replaced with new similar fixtures; or
- an existing heated water service on the premises is altered or extended to serve additional sanitary fixtures.
B2D7
Heated water storage
2019: B2.7
Containers used for producing and/or storing heated water must be provided with a temperature and pressure relief device in accordance with AS/NZS 3500.4.
B2D8
Legionella control
2019: B2.8
Legionella control for water heaters must be carried out in accordance with AS/NZS 3500.4.
B2D9
General requirements
2019: B2.9
A heated water service must be in accordance with AS/NZS 3500.4 with the following variations—
- substitute AS/NZS 3500.4 clause 5.8(c) with: 5.8(c) All new or replacement unvented storage water heaters shall be fitted with new temperature/pressure relief and expansion control valves.
- substitute AS/NZS 3500.4 clause 5.11.2.1 with: 5.11.2.1 The drain lines from the outlet of the temperature/pressure-relief valve and the expansion control valve on an individual water heater shall not be interconnected.
- substitute AS/NZS 3500.4 clause 5.11.3(e) with: 5.11.3(e) All drain lines shall discharge separately over a gully, tundish or other visible approved outlet.
General requirements
A heated water service must be in accordance with AS/NZS 3500.4.
B2D10
Bushfire prone areas
New for 2022
A heated water service in a designated bushfire prone area must be in accordance with AS 3959.
B2D11
Solar heated water
2019: B2.9
A solar heated water supply system for food preparation and sanitary purposes, where installed in a new building in climate zones 1, 2 or 3, is not required to comply with Section 8 of AS/NZS 3500.4.
Explanatory information: Cross-volume considerations
NCC Volumes One and Two deal with a number of areas of on-site construction which are relevant to a heated water service. They include, but may not be limited to, those listed in Table B2.
Item | NCC Volume One Class 2 to 9 buildings | NCC Volume Two Class 1 and 10 buildings |
---|---|---|
Excavations for pipework adjacent to a building and footings | B1 Structural provisions | H1 Structure |
Termite management for attachments to buildings and penetrations through a slab | B1 Structural provisions | H1 Structure |
Penetrations for pipework through a vapour barrier | B1 Structural provisions | H1 Structure |
Pipework in timber bearers and joists of solid timber or engineered wood products | B1 Structural provisions | H1 Structure |
Fittings, fixtures and pipework installations in steel framed construction | B1 Structural provisions | H1 Structure |
Penetrations through a fire-resisting wall or floor | C1 Fire resistance Performance Requirements and C4 Protection of openings | H3 Fire safety |
Fixtures and fittings in a wet area | F2 Wet areas and overflow protection | H4 Health and amenity |
Service pipework external to the building and penetrations through roof cladding in a bushfire prone area | G5 Construction in bushfire prone areas | H7 Ancillary provisions and additional construction requirements |
Pipework sound insulation | F7 Sound transmission and insulation | H4 Health and amenity |
Flues, chimneys, pipes, gas storage, domestic fuel tanks, cooling or heating appliances or other services | C4 Protection of openings | H3 Fire safety |
Central heating pipework | J6 Air-conditioning and ventilation systems | H6 Energy efficiency |
Pool and spa heating and pumping - energy efficiency | J8 Heated water supply and swimming pool and spa pool plant | H6 Energy efficiency |
Energy consumption monitoring for water heaters | J9 Facilities for energy monitoring | Not applicable |