NCC 2016 Volume Three
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Classification
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Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c
Part B2 Heated Water Services (Deemed-to-Satisfy)

Part B2 Heated Water Services (Deemed-to-Satisfy)

B2.1 Deemed-to-Satisfy Provisions

Performance Requirements BP2.1 to BP2.6 and BP2.8 are satisfied by complying with B2.2 to B2.6.

B2.2 General requirements

NSW B2.2(a)

Qld B2.2(a)

SA B2.2(a)

Vic B2.2(a)

(a)

The design, construction, installation, replacement, repair, alteration and maintenance of a heated water service must be in accordance with—

(i)
(ii)

for a Class 1a or Class 10 building only, Section 3 of AS/NZS 3500.5;

and the requirements of this Part.

(b)

* * * * *

(c)

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—

(i)

Section 8 of AS/NZS 3500.4; or

(ii)

for new Class 1a and Class 10 buildings, Section 3.33 of AS/NZS 3500.5.

B2.3 Accessible fixtures and fittings

Heated water supply taps or other operational controls provided for people with a disability in sanitary facilities must be in accordance with—

(a)

AS 1428.1 (2001) and AS 1428.2 for all Class 9b and Class 10 public transport buildings; and

(b)

AS 1428.1 (2009) for all other buildings.

Explanatory information: Cross-volume considerations

Explanatory information: Cross-volume considerations

Part F2 of NCC Volume One sets out the requirements for the design and construction of accessible sanitary facilities in Class 1b, 2 to 9, and 10a buildings.

NSW B2.4, NT B2.4, Qld B2.4, SA B2.4, Vic B2.4

B2.4 Water heater in a heated water supply system

In a new Class 1 or Class 10 building—

Tas B2.4(a)

(a)

a water heater in a heated water supply system must be—

(i)

a solar heater complying with (b); or

(ii)

a heat pump heater complying with (b); or

(iii)

a gas water heater complying with (c); or

(iv)

an electric resistance water heater only in the circumstances described in (d); or

(v)

a wood fired thermosiphon water heater or direct fired water heater each complying with AS/NZS 3500.4; and

(b)

a solar heater and a heat pump heater must have—

(i)

for a building with 1 or 2 bedrooms—

(A)

at least 14 Small-scale Technology Certificates for the zone where it is being installed; or

(B)

an energy saving of not less than 40% in accordance with AS/NZS 4234 for a "small" load system; and

(ii)

for a building with 3 or 4 bedrooms—

(A)

at least 22 Small-scale Technology Certificates for the zone where it is being installed; or

(B)

an energy saving of not less than 60% in accordance with AS/NZS 4234 for a "medium" load system; and

(iii)

for a building with more than 4 bedrooms—

(A)

at least 28 Small-scale Technology Certificates for the zone where it is being installed; or

(B)

an energy saving of not less than 60% in accordance with AS/NZS 4234 for a "large" load system; and

Explanatory information

Explanatory information:

In colder climates the performance of some heat pumps may diminish.

(c)

a gas heater must be rated not less than 5 stars in accordance with AS 4552; and

Tas B2.4(d)

(d)

an electric resistance water heater with no storage or a heated water delivery of not more than 50 litres in accordance with AS 1056.1 may be installed when—

(i)

the building has—

(A)

not more than 1 bedroom; and

(B)

not more than 1 electric resistance water heater installed; or

(ii)

the building has—

(A)

a water heater that complies with (b) or (c); and

(B)

not more than 1 electric resistance water heater installed; or

(iii)

the greenhouse gas emission intensity of the public electricity supply is low.

ACT B2.4(e), (f)

SA B2.401

B2.5 Layout of taps

(a)

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.

(b)

The requirements of (a) apply only where—

(i)

each tap controls a separate outlet; or

(ii)

both taps control a combined flow of water delivered through a single outlet.

B2.6 Maximum flow rates for heated water outlets

(a)

A heated water outlet of a shower, basin, kitchen sink, or laundry trough must have a maximum flow rate of not more than 9 litres per minute.

Explanatory information

Explanatory information:

A heated water outlet includes an outlet which delivers any combination of heated water and cold water.

(b)

The requirements of (a) do not apply to a shower intended to provide rapid drenching of a person for emergency purposes, such as chemical removal.

Explanatory information:Cross-volume considerations

Explanatory information: Cross-volume considerations

NCC Volumes One and Two deal with a number of areas of on-site construction which are relevant to heated water services. These include, but may not be limited to, the following:

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

3.1.1 Earthworks

Termite management for attachments to a building and penetrations through a slab

B1 Structural Provisions

3.1.3 Termite Risk Management

Penetrations for pipework through a vapour barrier

B1 Structural Provisions

3.2.2 Preparation

Pipework in timber bearers and joists of solid timber or engineered wood products

B1 Structural Provisions

3.4.0 Framing

Fittings, fixtures and pipework installations in steel framed construction

B1 Structural Provisions

3.4.2 Steel Framing

Penetrations through a fire-resisting wall or floor

C3 Protection of Openings

3.7.1 Fire Separation

Fixtures or fittings in a wet area

F1 Damp and Weatherproofing

3.8.1 Wet Areas and External Weatherproofing

Service pipework external to the building and penetrations through roof cladding in a bushfire prone area

G5 Construction in Bushfire Prone Areas

3.7.4 Bushfire Areas

Pipework sound insulation

F5 Sound Transmission and Insulation

3.8.6 Sound Insulation

Central heating pipework

J5 Air-conditioning and Ventilation Systems

3.12.5 Services

Energy consumption monitoring for water heaters

J8 Facilities for energy monitoring

Not Applicable