Valve Sizing Tool

Safe Surface Temperature

The Optitherm uniquely complies fully with the requirements of NHS Estates Health Guidance Note, 'Safe Hot Water and Surface Temperatures', which states that no surface within 2 metres of floor level should ever exceed a temperature of 42°C. 

Thermal imaging of the Optitherm in use shows how the surface of the Optitherm never exceeds 42°C and therefore at no point does it pose a burn risk.

Parameters at the time were:

Hot water supply temperature - 60°C

Cold water supply temperature - 17°C

Mixed water temperature - 41°C