CONNECTING HOT WATER CIRCULATION
To reduce the risk of bacterial growth in systems with
hot water circulation, the temperature of the circulating
water should not fall below 50 °C. Nor should there be
any non-circulatory hot water pipes. Adjust the hot water
system to ensure that the temperature does not fall
below 50 °C in the extremities of the system.
An additional expansion vessel may be requiered.