Part B2 Heated water services
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.
VIC B2P4 Access and isolation2019: BP2.3
VIC B2P7 Energy use and source2019: BP2.6
VIC B2D2 Water heater in a heated water supply system2019: B2.2
VIC B2D5 Maximum delivery temperature2019: 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.
VIC B2D6 Temperature control devices2019: 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.