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Installation
Commissioning
Adjustments
Tr
oubleshooting
Data comm
unication
3.3.4 Disinfection
Adjustment channel Description
Adjustment range / selection
Factory setting
Disinfection
Activation of the function
Yes, No
No
Manual start
Manual start of the disinfection
-
-
T-disinf set
Set temperature for thermal disinfection 65 … 75 °C
70 °C
Disinf duration
Duration of the thermal disinfection
1 … 30 min
3 min
Disinf day
Sub-menu for selecting the disinfec-
tion day
-
-
Disinfection day
Selecting the disinfection day
Mo, Tu, We, Th, Fr, Sa, Su
Mo, Tu, We, Th,
Fr, Sa, Su
back
Disinf time
Starting time for the thermal disinfection 00:00 … 23:59
01:00
Preheating
Activation of the store afterheating
Yes, No
No
∆
t circ
Time constant of the circulation pipe
60 … 900 s
300 s
Overrun time
Overrun time for both pumps
60 … 600 s
60 s
Flushing
Sub-menu for the fl ushing process
after a completed thermal disinfection
-
-
Flushing
Activation of the function
Yes, No
No
Relay 1
Relay selection for the fl ushing process system dependent
system
dependent
Flushing time
Indication of the fl ushing time
-
correlates with
the overrun time
back
back
Main menu / Disinfection
This function helps to prevent the spread of Legionella
in DHW and circulation pipes on the secondary side
of the heat exchanger. When the thermal disinfection
function is active, the speed of the primary pump
is controlled such that the adjustable temperature
T-disinf set
is reached. The controller activates the
circulation pump in order to disinfect the circulation
pipe for the adjustable time Disinf duration.
The thermal disinfection function starts automati-
cally when the adjusted
Disinf time
on the adjusted
Disinf day
has arrived. By means of the menu item
Manual start
, the disinfection can be started manu-
ally at any time.
When the thermal disinfection function is active, it can
be aborted at any time by means of the menu item
Abort
. All runtimes counted and conditions fulfi lled
will be reset in that case.
WARNING!
During and up until 1 hour after the
completion of a thermal disinfection,
increased DHW temperatures may
occur. Ensure a scald protection dur-
ing and up until 1 hour after the com-
pletion of a thermal disinfection. After
thermal disinfection is completed, re-
turn the system to normal operation.