Operation Manual

Menu: DHW
Line no.
Operating line
Factory setting
1640
Legionella function
Off
Periodically
Fixed weekday
Off
1641
Legionella funct periodically
All 3 days
1642
Legionella funct weekday
Mo - Su
Monday
1644
Legionella function time
- - : - -
1645
Legionella funct setpoint
65°C
1646
Legionella funct duration
30 min
1647
Legionella funct. circ. pump
Off / On
On
Line no.
Operating line
Factory setting
1660
Circulating pump release
Time program 3/HCP
DHW release
Time program 4/DHW
DHW release
1661
Circulating pump cycling
On
Legionella function
 Periodically
The legionella function is repeated
according to the interval set
(operating line 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. This means that the heat
source is switched on only if the
solar plant could not deliver the
required “Legionella function
setpoint” within the adjusted period
of time.
 Fixed weekday
The legionella function can be
activated on a fixed weekday
(operating line 1642). When using
this setting, heating up to the
legionella setpoint takes place on
the selected weekday, independent
of previous storage tank
temperatures. This setting is
intended primarily for plant with no
solar integration.
Legionella function circulating
pump
The DHW circulating pump can be
activated also while the legionella
function is executing. Over that period
of time a risk of scalding at the tap
connection persist.
Circulating pump
Circulating pump cycling
When the function is activated, the
circulating pump is switched on for 10
minutes whithin the release time and
then switched off again for 20 minutes.
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