Energy Balance Controller; Charging Principle Buffer Cylinder; Resetting To Factory Settings; Controller Structure - Vaillant geoTHERM VWS Serie Instrucciones De Uso

5.3.2 Energy balance controller

The energy balance controller is only applicable to hy-
draulics without buffer cylinder.
For economical and fault-free operation of a heat pump,
it is important to regiment the starting of the compres-
sor. The start-up of the compressor is the point at which
the highest loading occurs. With the help of the energy
balance controller it is possible to minimise starts of the
heat pump without compromising the comfort of a
pleasant room atmosphere.
As with other weather-controlled heating controllers the
controller determines a supply set target temperature
by capturing the outside temperature through a heating
curve. The energy balance calculation is carried out
based on this supply set target temperature and the
supply real temperature the difference of which is
measured per minute and added up:
1 degree minute [°min] = 1 K temperature difference in
the supply from 1 Minute (K = Kelvin)
The heat pump starts up at a defined heat deficit and
only switches off again when the supplied heat is equal
to the heat deficit.
The larger the preset negative numerical value is, the
longer the periods for which the compressor is kept
running or at standstill.

5.3.3 Charging principle buffer cylinder

The buffer cylinder is controlled depending on the set-
point flow temperature. The heat pump heats when the
temperature of the buffer cylinder head temperature
sensor VF1 is smaller than the set target temperature. It
heats until the temperature measured by the sensor at
the base of the buffer cylinder, RF1, has reached the set-
point temperature plus 2 K.
In the connection to a hot water cylinder charging the
buffer cylinder is also charged when the temperature of
the head temperature sensor VF1 is less than 2 K higher
than the set target temperature (premature reheating):
VF1 < T VL set + 2 K.

5.3.4 Resetting to factory settings

a Caution!
Inadvertent deletion of specific settings!
When you reset the control system to
the default settings, specific system
settings can be deleted and the system
can shut down. The system does not
suffer damage.
• Press both dials simultaneously for at least 5 seconds
in the top-level display of the graphics display.
Operating Manual geoTHERM VWS/VWW 0020051578_01
All manuals and user guides at all-guides.com
After that you can select whether to reset only the
timer programme or all values to the default settings.

5.3.4 Controller structure

The top level display is a graphics display. It is the
starting point for all the available displays. This display
reappears automatically if you do not actuate any of the
dials for a long time when setting values.
Controller operation is subdivided into four levels:
The operator level is specified for the operator.
In Sect. 5.4 all of the controller's displays are shown as
a flow diagram. A detailed description of the displays is
contained in Sect. 5.5.
The code level (menu C1 - C9, D1 - D5, I1 - I5 and A1 - A9)
is reserved for the engineer and protected by a code to
protect it from unintentional modification.
As the operator you can scroll through the menus of the
code level and view the system-specific setting parame-
ters however without changing the values.
In the menus C1 to C9 the engineer sets system-specific
parameters.
The menus D1 to D5 enable the engineer to operate and
test the heat pump in the diagnosis mode.
In Menus I1 to I5 you can obtain general information re-
garding the settings for the heat pump.
Menus A1 to A9 take the engineer through the installa-
tion menu to put the heat pump into operation.
The display and selection of special function
(e.g. the energy-saving function) is also possible for the
operator. Instructions on how to activate the special
functions are given in Chap. 5.6.
The fourth level contains functions for the optimisation
of the system and can only be set by the engineer using
vrDIALOG 810/2.

5.3.5 Adjusting the energy saving functions

Also described in Chap. 5.5 are heat pump settings that
will enable a reduction in your energy costs. This can be
achieved by finding the optimum setting of the heat
pump's weather-controlled energy balance controller.
This symbol points you to these energy saving tips.
Operation 5
GB 13