17 17
Thermal disinfection
This function helps to contain the spread of Legionella in DHW stores by system-
atically activating the afterheating.
One sensor and one relay can be selected for this function.
For thermal disinfection, the temperature at the allocated sensor has to be moni-
tored. This protection is ensured when, during the monitoring period, the disinfec-
tion temperature is continuously exceeded for the entire disinfection period.
The monitoring period starts as soon as the temperature at the allocated sensor
falls below the disinfection temperature. When the monitoring period ends, the
allocated reference relay activates the afterheating. The disinfection period starts,
if the temperature at the allocated sensor exceeds the disinfection temperature.
Thermal disinfection can only be completed when the disinfection temperature
is exceeded for the duration of the disinfection period without any interruption.
Starting time delay
If the starting delay option is activated, a starting time for the thermal disinfection
with starting delay can be adjusted. The activation of the afterheating is then delayed
until that starting time after the monitoring period has ended.
If the monitoring period ends, for example, at 12:00 o'clock, and the starting time
has been set to 18:00, the reference relay will be energised with a delay of 6 hours
at 18:00 instead of 12:00 o'clock.
Note:
If the thermal disinfection option is activated, the display channels TDIS,
CDIS, SDIS, and DDIS will be displayed.
OTDIS 17
PUSH
PDIS / Monitoring operiod
Adjustment range: 0 … 30:0 … 24 h (dd:hh)
Factory setting: 01:00
OTDIS
Thermal disinfection option
Adjustment range: ON / OFF
Factory setting: OFF
SDIS / Starting time delay
Adjustment range: 00:00 … 24:00
Factory setting: 18:00 (full hours only)
RDIS / Thermal disinfection relay
Adjustment range: 1, 2, 3, 4
Factory setting: 3
DDIS / Disinfection period
Adjustment range: 1 … 1380
Factory setting: 60
TDIS / Disinfection temperature
Adjustment range: 0 … 95 °C
in steps of 1 °C
Factory setting: 60 °C
TSDIS / Thermal disinfection sensor
Adjustment range: 2, 3, 4, 5
Factory setting: 3
OK
19
OFF
OFF
ON
ON
BACK
PUSH
OPARR 18
PUSH
OPARR / Parallel relay option
Adjustment range: 2, 3
Factory setting: system-dependent
OPARR / Parallel relay option
Selection: ON / OFF
Factory setting: OFF
INVER / Inversion
Selection: ON / OFF
Factory setting: OFF
18
OK
BACK
PUSH
18
Parallel relay
With this function, e. g. a valve can be controlled in parallel to the pump via a sep-
arate relay.
If solar loading takes place (R1 and / or R2) or if a solar function is active, the relay
selected will be energised. The parallel relay can also be energised inversely.
Note:
If R1 and / or R2 are in the manual mode, the selected parallel relay will
not be energised.
OSDIS / Starting delay option
Selection: ON / OFF
Factory setting: OFF
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