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Menu “5. Protections” can be used to acti-
vate and set various protective functions.
The menu is closed by pressing “esc” or
selecting “Exit protections“.
Protective functions
5. - Protective functions
5.1. - Anti Legionella
Warning
This does not under any
circumstances replace the safety
facilities to be provided by the
customer!
Caution
Danger
This function is used to heat up the system during selected period (Min. time
Legionella) that will start following the set time schedule and last until the temperature
AL Tset is reached . This temperature must be reached and kept at the AL sensor for
the time set as AL residence time. If the AL function is ON, then the parameter Tmax
changes automatically to AL Tset +10 °C to prevent system switch off due to exceeding
a high temperature limit.
Anti Legionella heat up is considered successful if the temperature at Legionella
Sensor 2 reaches at least a temperature of “AL Tset” -5°C. The time of this heat up is
then displayed as
Last AL heat
. If the temperature of “AL Tset” -5°C is not reached
within 2 hours, the attempt will be cancelled and started again the following day. At the
same time, an error message will appear. A message saying “Anti-Legionella heat up
can be started manually” will be also displayed.
During the anti-Legionella function the storage tank is heated up to a
very high temperature which can lead to scalding and damage to the
system.
Whenever heating-up has been carried out with the anti-Legionella
function switched on, an information message with the date appears on
the display.
AL resid. time
- This determines the time span for which the AL T set temperature
must be detected for a successful AL heat up.
Last AL heat
Displays the date and time of the last successful AL heat up.
AL-times
During this periods the AL heat up is attempted.
Setting range: Anti Legionella: ON, OFF / Default setting: ON
Setting range: AL Tset 60 °C to 99 °C / Default setting: 70 °C
Setting range: AL resid. time 1 min. to 120 min. / Default setting: 15 min
