Carry out thermal disinfection
Condens 5000 W – 6720644144 (2019/03)
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5 Carry out thermal disinfection
To prevent the DHW becoming contaminated by bacteria such as legionella, we
recommend you pasteurise the system after longer idle periods.
Pasteurisation covers the DHW system including the draw-off points. For solar DHW
cylinders, the solar portion of the cylinder is not covered.
▶ Turn off all hot water points.
▶ Warn occupants of risk of scalding.
▶ If the heating programmer has a DHW program, set the time and DHW
temperature accordingly.
▶ If there is a circulation pump, set it to run continuously.
With some heating controllers, thermal disinfection can be
programmed for a fixed time; see heating controller operating
instructions.
DANGER: Risk of scalding!
Hot water can result in severe scalding.
▶ Carry out thermal disinfection only outside the normal hours
of use.
▶ The water in the tank will take a while to cool down to the set
hot water temperature as a result of heat loss. Be aware that,
after thermal disinfection, the hot water may be hotter than
the set temperature.
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