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Installation instructions geoTHERM VWS/VWW 0020051574_01
Display shown
Description
Factory setting
Auxiliary heater
C7
Aux on during CH
no CH
Aux on during DHW
comfort
CH start at
-600 °min
> Settable values
This menu is only displayed if an external auxiliary
heating system is connected and auxiliary heating is
integrated in Menu A8.
Aux on during CH
No Aux.:
Aux. blocked.
Comfort:
Aux. enabled, dependent on Out T. aux htr
on and °mins lag/gain.
Aux. only:
Heating mode by means of auxiliary heat-
ing only, e.g. in emergency operation
Aux on during DHW
No CH.:
Aux. blocked
Comfort:
Auxiliary heating supplies the temperature
level that the compressor cannot provide
(approx. > 58 °C cylinder temperature)
Aux. only:
DHW heating by means of auxiliary heat-
ing only, e.g. in emergency operation (if "No Aux."
was previously activated, a max. DHW temp. of ap-
prox. 58 °C applies; if "Aux." was activated, the max.
DHW temp set in C6 applies
Aux. start at:
Setting the degree minutes until the
auxiliary heating starts, added to the degree minutes
for compressor start.
Example: -600 °min plus -120 °min
=> start at -720 °min.
Out T. aux htr on: The auxiliary heating is only ena-
bled for post-heating in heating mode below this
temperature (can be set in Menu A3).
no Aux.
no Aux.
Cooling
C8
Max Flow Setpoint.
22 °C
> Select
The menu is only displayed for hydraulics with cool-
ing mode.
Flow temperature:
Display of target flow tempera-
ture. The value can be changed.
A number of components for the passive cooling op-
eration must be installed on the customer side. For
information and selection of components, refer to
the planning information for the electric heat pump
supplied by Vaillant.
20 °C
Legionella protect
C9
Parameters
Legionella protect
Off
Legionella start
04:00
> Select
Legionella protect:
Off/Mo/Tu/We/Th/Fr/Sa/Su
Legionella protect time:
The preset time of day de-
termines when the anti-Legionella function will start.
The anti-Legionella function is carried out by the
auxiliary heating on the preset day of the week, at
the preset time, if the auxiliary heating has been ac-
tivated.
For this purpose, the controller sets the flow set-
point to 76 °C/74 °C (2K hysteresis). The anti-Le-
gionella function is terminated when the current
flow temperature at the cylinder has reached 73 °C
for a duration of at least 30 min, or after 90 minutes
if 73 °C is not reached (e.g., if hot water is drawn
during this period).
Off
04:00
Table 8.4 Parameters that can be set in the Code level (cont.)
Controller 8
