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Operation
Compress 7000 AWM/AWMS 5-17 – 6721830635 (2021/02)
14
Activating extra DHW heating
Menu: Extra hot water
Table 10 Settings for the extra hot water function
Thermal disinfection
WARNING
Danger to life from legionella!
Legionella can form in domestic hot water at DHW temperatures that are
too low.
Activate thermal disinfection
-or-
Have daily heat-up set in the service menu by the specialist
technician.
Thermal disinfection may be terminated prematurely due to the
system configuration or frequent water extraction. In this case the
control unit issues a fault display. When thermal disinfection is
activated, attention must be paid to ensuring, that this is performed
successfully without a fault display.
Observe the statutory regulations on drinking water.
If the thermal disinfection has terminated prematurely a notification is
shown in the display. The system will repeat the thermal disinfection 24
hours later.
If the thermal disinfection is set and activated at an external heat source,
the settings at the user interface have no effect on the thermal
disinfection.
WARNING
Risk of scalding!
If thermal disinfection or the daily heat-up has been activated to avoid
legionella, the DHW is heated once to in excess of 60 °C (e.g. Tuesday
night at 02:00).
Only carry out thermal disinfection/daily heat-up outside normal
hours of use.
Make sure that a thermal mixer is installed. If in doubt, ask your
installer.
Menu: Autom. therm. disinfect.
Table 11 Settings for thermal disinfection
Setting the DHW alternating operation
If DHW alternating operation is not activated, DHW heating has priority
and interrupts the heat requirement of the heating system, if necessary.
Menu: DHW alternating operation
Table 12 Settings for the DHW alternating operation
Settings for the DHW circulation
Menu: Circulation
Table 13 Settings for the circulation
Menu item Description
Start now/
Cancel now
After activation of the extra hot water function, DHW
is heated for the set duration to the set temperature.
When the function is active, [Cancel now] is
displayed in the menu. Select this setting for
immediate deactivation of the extra hot water
function.
Temperature Desired DHW temperature for the extra hot water
function.
Duration Duration for the extra hot water function. When the
time has expired, the function automatically
switches off and the system goes back to normal
DHW operation.
Menu item Description
Start The entire DHW volume is automatically heated to
the set temperature once a week or daily, if [Auto] is
set here.
Start now/
Cancel now
Immediate start or cancellation of thermal
disinfection independently of the set day of the
week.
Weekday Day of the week, on which thermal disinfection is
automatically carried out once a week, or daily
thermal disinfection.
Time of Day Time of day for the automatic start of thermal
disinfection.
Menu item Description
DHW alt.
operation on
In the event of simultaneous DHW and heating
demand, the system will alternate between DHW
heating and heating mode based on the times set in
[Prioritise DHW for] and [Heating priority for].
Prioritise DHW
for
Duration of DHW heating.
Heating priority
for
Duration of heating mode.
Menu item Description
Op. mode [Off]: Circulation is switched off permanently.
•[On]: The pump will run according to the settings under
[Start frequency]. The time program for the DHW
circulation pump is not active.
The circulation can be linked to the time program for
DHW heating.
•[My circulation time prog.]: Set a time program for the
DHW circulation pump that works independently of the
time program for DHW.
Start frequency The start frequency determines how often the DHW
circulation pump goes into operation for three minutes at a
time every hour (1 x 3 minutes/h ... 6 x 3 minutes/h) or if it
is constantly in operation. Whatever the case, circulation is
only active during the times set in the time program.
My circulation time
prog.
6 switching times can be set for each day or group of days.
The DHW circulation pump can be switched on or off at
each switching time. The minimum duration of a time slot
between two switching times is 15 minutes.
Resetting prog. The time program is reset to factory default.
14


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