16
EN-RATIOfresh-250-400_TI-MA-0809-11214900
Table 8 Value Level – SETTINGS: CIRCULATION
Designation
Description
Range
Base value
Your value
The time slots 1 to 4 are depicted in the menu only if the circulation mode “time” has been selected.
TIMESLOT
WEEKDAY
slots 1-4
Sub-menu for setting the circulation times on weekdays (Monday
to Friday)
TIMESLOT
WEEKEND
slots 1-4
Sub-menu for setting the circulation stimes on weekends (Saturday
and Sunday)
TIMESLOT 1 (2,3,4)
Start:
[00:00] Time
First switching on point for the circulation pump in “time” mode. Press
the
■
key to release the time for changes. Use < and > to set the hours
first and then use
■
to switch to the minute input and change the
minutes with < and > and then use
■
to return to the time window level.
00:00-
24:00
00:00
TIMESLOT 1 (2,3,4)
Stop:
[00:00] Time
First switching off point for the circulation pump in “time” mode. Follow
the procedure already described.
00:00-
24:00
00:00
TARGET GAP
Nominal: [10] K
The nominal difference indicates the temperature difference in K, which
is to be maintained between hot water outlet and circulation return.
5 – 25 K
10 K
MAX.
TEMPERATURE
Nominal: [40] °C
This adjustable value indicates the circulation return temperature in °C.
If this value is exceeded, the circulation pump switches off.
5 – 70 °C
40 °C
END
Select this menu item with the < and > keys and press the
■
key to return to the menu level.
Table 9 Value Level – DISINFECTION SETTINGS
Designation
Description
Range
Base value
Your value
The disinfection can be displayed and activated only when the cylinder temperature sensor is connected. Based on the current measured
value, the demand for aux. heating is carried out via the external potential-free output.
Risk of scalding during the disinfection cycle!
MODE
Nominal: [OFF]
Select operating mode for the disinfection of the hot water system.
When in automatic mode (AUTO), the hot water and circulation network
are thermally disinfected at the selected time. Select a time outside of
the typical tapping times to reduce the risk of scalding!
With the operating mode ON, the disinfection is activated continuously
(e.g. for testing the function), with OFF is it completely deactivated.
AUTO
ON
OFF
OFF
STARTING TIME
[23:00]
Enter the time when disinfection is to start.
00:00 –
24:00
23:00
STARTING DAY
[Monday]
Setting the week program. Disinfection can also be started on a
predefined day (Mon-Sun) or every day.
Mon to Sun,
daily
Sun
SYSTEM TEMP
Nominal: [65] °C
The system regulates the circulation pump so that the set system
temperature is reached in the circulation return. The hot water temp. is
then adjusted to a temperature that is 50 % higher than the hysteresis of
the aux. heating.
55 – 80 °C
65 °C
DURATION
[020] min
Disinfection duration in minutes. This is the duration for which the
system temperature is maintained in the circulation return. The LED
diode (9-4) lights up red if the system duration falls below this value
during this time.
0 – 60 min
20 min
TEMP. RISE
[10] K
Aux. heating hysteresis. The external (potential-free) switching output of
the controller is closed as soon as the temperature in the aux. heating
section of the buffer drops below the sum of disinfection temp. and
hysteresis.
The boiler serving for the aux. heating must be connected in a way that
it starts the boiler charge function when the potential-free contact is
closed. Since the max. temperature of the boiler is not monitored, the
boiler temperature limitation must be set in a way as to prevent excess
temperatures in the system.
5 – 15 K
10 K
END
Select this menu item with the < and > keys and press the
■
key to return to the menu level.
