Your TMV (Thermostatic Mixing Valve) will need to be tested annually in QLD in order to remain compliant.
AS 4032.3:2004 states that in the absence of a risk assessment, field testing shall be carried out at intervals of no more than 12 months for thermostatic mixing valves.
A tempering valve or Thermostatic Mixing Valve (TMV) reduces your hot water temperature to the tap, to allow you to meet Australian standards outlined in the Plumbing Code of Australia.
According to AS3498, the delivery of hot water for personal hygiene must be at a maximum of 50°C to prevent burns.
For institutions such as early childhood centers, schools, and aged care or other facilities where the young, sick, aged or disabled could be using hot water, the maximum temperature at the tap must be 45°C.
In 1998, an Australian standard was introduced to regulate hot water temperature storage to a minimum of 60°C (AS3500.4.2 Clause 1.6). This standard is in order to prevent deadly Legionella bacteria, which breeds in warm water under this temperature.
Due to the potential for serious burns at 60°C, the Plumbing Code of Australia also sets standards on the water temperature at the tap.
If you have not booked in regular testing and maintenance, Alphacool Plumbing Cairns & Port Douglas can help. Give us a call on 1300 325