NCC 2022 Volume Three - Plumbing Code of Australia
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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

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Classification
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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.