Siemens AVS75.39 Series User Manual page 82

"Legionella" function
"Legionella" function
Legionella funct time
Legionella function
setpoint
Legionella funct duration
Legionella funct circ
pump
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Siemens
Building Technologies
Line no. Operating line
1640 Legionella function
Off ¦ Periodically ¦ Fixed weekday
1641 Legionella funct periodically
1642 Legionella funct weekday
Monday...Sunday
1644 Legionella funct time
1645 Legionella funct setpoint
1646 Legionella funct duration
1647 Legionella funct circ pump
1648 Legio funct circ temp diff
Off
The "Legionella" function is deactivated.
Periodically
The legionella function is repeated according to the interval set (1641). The
legionella setpoint is attained via a solar plant, independent of the period of time
set, the period of time will be newly started.
Fixed weekday
The legionella function can be activated on a fixed weekday (1642). When using
this setting, heating up to the legionella setpoint takes place on the selected
weekday, independent of previous storage tank temperatures.
Defines the time of day the "Legionella" function is started. The setpoint is
increased at this time and DHW charging started.
If no time is parameterized, the "Legionella" function is started on the respective
day together with the first normal release of DHW heating. If on this day is no
Release (continuously reduced) the legionella function will be prepared.
The legionella function is activated if DHW heating is switched off (Operating mode
= Off or the holiday function controls the heating circuits) as soon as DHW heating
is switched back on (Operating mode = On or end of holidays).
The DHW storage tank is heated to the entered setpoint (55-95°C).
For the "Legionella" function to be regarded as fulfilled, the sensor at the top of the
storage tank (B3) or both sensors (B3 and B31) must reach the legionella setpoint,
depending on the type of charging (line 5022); that setpoint must then be
maintained for the set duration of the function.
The higher the setpoint, the shorter the required dwelling time to safely kill off any
legionella in the DHW.
The defined minimum period to maintain the legionella setpoint in the storage tank /
circulation pipes.
During the period of time the legionella function is performed, the DHW circulating
pump can be activated.
During the period of time the legionella function is carried out, there is a risk of
scalding when opening the taps.
User manual RVS43.345
The settings in detail
CE1U2354en_021
2013-09-02