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6.5. - Antilegionella
With the AL-function activated, the FWC3 3 makes it possible to heat the storage in selectable
intervals, (AL interval) for the set residence time (AL resid. time), starting at the set time (AL
start time) until the temperature AL Tset is reached. The temperature measured at S5 has a
reference of AL Tset +5°. For the time the AL function is active, Tmax is set to AL Tset +10° to
prevent system shutdown due to high temperature.
Only when a temperature of at least „AL Tset“ is reached at the circulation sensor for the time
set in „Al resid. time“, the AL function is regarded as succeful. This is displayed as “AL heat.”,
menu 6.5.6. If AL is unsuccessful after 2 hours, the attempt is canceled and will be started again
the next day and an error message is displayed.
Caution
Danger!
During the anti-Legionella function the storage tank is heated up to high temperatures
which can lead to scalding and damage to the system.
Caution
This anti-Legionella function does not provide complete protection against Legionella,
because the controller is dependent on suf
fi
cient energy being fed in.
The AL function is switched off by default.
A message also containing the date is shown as soon as the AL function was completed
successful. We recommend to set the „AL start time“ in a period where little or no withdrawal
of water takes place.
The user has to make sure that the antilegionella function was succesful at the set
intervals.
The user has to make sure that the storage temperature is AL Tset +5° when start-
ing AL. When the storage sensor S3 is installed: If AL Tset+5° is not reached, the AL
function is not started.
Caution
Caution
AL Function - Settings range: On or Off/ Default: Off
AL start time- Settings range 00:00 to 23:59 Uhr / Default 04:00 h
AL Tset - Settings range: 60°C to 99°C / Default: 70°C
AL Interval - Settings range: 3 to 28 days/ Default: 7 days
AL residence time - settings range: 1-60minutes / Default: 15 minutes
Special functions
Summary of Contents for FWC3
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