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9Installation Instructions VRC430 0020042468_02
6 Initial start-up
Initial situation:
The controller and the external sensor are correctly in-
stalled and connected.
The heating unit is switched on and ready for operation.
h
Note!
Ensure that both rotary knobs
(outlet-/hot water cylinder temperature and
heating flow temperature ) on the boiler are at
the maximum position (all the way to the right).
This ensures optimum control system by the
VRT 430.
The VRC 430 operating concept is described in the op-
erating instructions in Chapter 4.3.
6.1 Installation assistant
The installation assistant will help you with the initial
start-up. The installation assistant
recognises the components connected to the heating
system.
Depending on the configuration of the heating unit, up
to six screens (A1 to A6) are available. You can enter
the most important parameters of the heating system
using the installation assistant.
The installation assistant starts with screen A1, language
selection.
Select the language as per the operating concept
(operating instructions 4.3).
Turn the left-hand dial clockwise by one click to ac-
cess screen A2.
Installation assistant
System configuration
Mixer mode HC1
> Select
Cylinder
active
DC
A 2
Fig. 6.1 Installation assistant screen A2
The heating system configuration is shown on screen
A2.
In the heating circuit mode HC1 you can select between
burner circuit (BK) and inactive.
In Cylinder you can choose between active and inactive.
Turn the left-hand dial clockwise by one click to ac-
cess screen A5.
You can check the heating generator settings on screen
A5:
Select 50 °C as the parameter value for the "Activa-
tion heater" parameter.
Check the boiler reaction.
If you want to make any other changes:
Turn the left-hand dial anticlockwise to return to
any of the previous screens.
To exit the installation assistant:
Turn the left-hand dial clockwise to access screen
A6.
Click "Yes" to exit.
h
Note!
If you confirmed the end of the installation with
"yes" you can only access the installation as-
sistant via the code-protected Expert Techni-
cian Level.
6.2 Expert technician level
The expert technician level is used to display and set/
change specific operating data. This allows the control
system to be set according to the heating system. This
is advisable if the heating installation has other compo-
nents in addition to the heating circuit 1 (HC 1)(e.g. heat-
ing circuit 2, domestic hot water cylinder, solar energy
system).
h
Note!
Please refer to the individual operating manuals
for component controller function descriptions.
The expert technician level includes screens C1 to C26
and the screens A1 to A6 of installation assistant as de-
scribed above.
Screens C1 to C26 in the VRT 430 appear in the same
sequence as shown in table 6.1 below.
This table shows the parameters which can be set and
changed.
Depending upon the configuration selected, non-re-
quired parameters are not displayed on the installation
assistant (screen A2).
The settings/changes take place in accordance with the
operating concept as described in Chapter 4.3 of the op-
erating instructions .
In order to get to the expert technician level, you need
to enter an access code.
From the simplified basic display you can access the ex-
pert technician level as follows:
Initial start-up 6
29


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