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Protective functions
menu 6
11
11
11.5 Antilegionella
menu 6.5 / 6.5.1 - 6.5.3
With the AL-function activated, the TDC 5 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.
Sensor 6 must be connected when the Antilegionella function is active, since it
is used to as switch-off sensor and must be placed in an appropriate position in
the lower part of the storage or in the conduit system. The switch-on/switch-off
hysteresis for the additional heating within the AL-function is +/- 1°C and applies
to the coldest sensor in the system. Only when a temperature of at least „AL
Tset“ - 5°C is reached at all sensors for the time set in „Al resid. time“, the AL
function is regarded as succeful.
Two days before the set „Al interval“ the TDC 5 attempts to heat up to „AL Tset“
via solar without regard to „AL start time“.
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, and it is not possible to monitor the temperatures in
the entire range of the storage tanks and the connected piping system.
To provide complete protection against Legionella bacteria, it must be
ensured that the temperature is raised to the necessary temperature,
and, especially at the programs 2 to 6, at the same time there must be
water circulation in the storage tank and piping system by means of
other additional energy sources and control units.
The AL function is switched off by default.
The AL function in the programs 5 and 6 applies only to the storage where
sensor 2 is installed. 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.
Caution
AL Function - Settings range: On or Off/ Default: Off
AL start time- Settings range 00:00 to 23:59 Uhr / Default 22:00 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: 1-120minutes / Default: 60 minutes
