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Legionella funct setpoint
Guide values
Legionella funct
duration
188/617
Building Technologies Division
Line no.
Operating line
1645
Legionella funct setpoint
The higher the temperature level of the storage tank, the shorter the required dwelling
time at that level.
Storage tank
Dwelling time
temperature
80 °C
A few seconds
70 °C
1 minute
66 °C
2 minutes
60 °C
32 minutes
55 °C
6 hours
50 °C
No killing of viruses
45 °C
Ideal conditions for viruses
Warning!
The figures given in the table are guide values. They do not guarantee that
legionella viruses will be completely killed.
Note!
The Legionella setpoint can be adjusted between 55 °C and 95 °C. When the
Legionella function is activated, the DHW storage tank is heated up until the value set
here is reached. For the Legionella function to be regarded as fulfilled, sensor B3 at
the top or both sensors B3 and B31 must reach the Legionella setpoint which must
be maintained for the set dwelling time, depending on Type of charging (5022).
Line no.
Operating line
1646
Legionella funct duration
The demanded Legionella funct setpoint must be fully maintained during the set
dwelling time. If the storage tank temperature (in the case of 2 sensors, the
temperature acquired by the colder sensor) exceeds the Legionella funct setpoint
minus 1 K, the Legionella funct setpoint is considered fulfilled and the Dwelling time
timer elapses. If the storage tank temperature drops below the demanded Legionella
funct setpoint by more than the DHW switching differential plus 2 K before the dwelling
time has elapsed, the dwelling time must be fulfilled again. If no dwelling time is set, the
Legionella function is performed the moment the Legionella funct setpoint is reached.
Note!
If the Legionella function cannot be performed within a 48-hour period, an error
message is delivered.
User Manual LMS14...
6 The settings in detail
CC1U7471en
07.05.2014
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