NCC 2022 Volume Three - Plumbing Code of Australia
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

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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

B2

Part B2 Heated water services

Part B2 Heated water services

NSW B2D2 Water heater in a heated water supply system

This clause been deliberately left blank
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.

NSW B2D5 Maximum delivery temperature2019: NSW B2.5(a)(iv)

Delete clause B2D5 and insert NSW B2D5 as follows:

The delivery temperature of heated water at the outlet of each sanitary fixture must be—

  1. not more than 45°C in any—
    1. residential part of an aged care building; or
    2. patient care area in a health-care building; or
    3. part of an early childhood centre, or primary or secondary school, that is used by children; or
    4. any facility designated for use by people with a disability; or
  2. not more than 50°C in all other cases.

Applications

B2D5 applies to all heated water installations for personal hygiene purposes.

NSW B2D6 Temperature control devices2019: NSW B2.6(2)(d), Application 1 and Exemption 1

Delete clause B2D6 and insert NSW B2D6 as follows:

(1) A temperature control device used to deliver heated water in accordance with B2D5(a) must be a—

  1. thermostatic mixing valve; or
  2. thermostatically controlled tap.

(2) A temperature control device used to deliver heated water in accordance with B2D5(b) must be a—

  1. thermostatic mixing valve; or
  2. thermostatically controlled tap; or
  3. tempering valve; or
  4. temperature limited water heater with a maximum delivery temperature of 50°C marked in accordance with AS 3498.

(3) The required maximum delivery temperature must be achieved in accordance with AS/NZS 3500.4.

Applications

B2D6 only applies to—

  1. all new heated water services; or
  2. 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.