Electrical installation 5
0020237057_01 Installation instructions
9
5
Electrical installation
Only qualified electricians may carry out the electrical install-
ation.
5.1
Polarity
When connecting the eBUS line, there is no need to pay at-
tention to the polarity. If the connection cables are switched
over, communication will not be adversely affected.
5.2
Connecting the radio receiver unit to the
heat generator
1.
When opening the electronics box in the heat gener-
ator, proceed as described in the installation instruc-
tions for the heat generator.
2.
Connect the eBUS line to the eBUS terminals in the
wall base of the radio receiver unit.
3.
Connect the eBUS line to the eBUS terminals in the
heat generator.
5.3
Connecting the radio receiver unit to the
ventilation unit
1.
When connecting the radio receiver unit to the ventil-
ation unit, proceed as described in the installation in-
structions for the ventilation unit.
Conditions
: Ventilation unit connected to the eBUS without
VR 32
, Ventil-
ation unit without eBUS heat generator
▶
Connect the eBUS line to the eBUS terminals in the wall
base of the radio receiver unit.
▶
Connect the eBUS line to the eBUS terminals on the
ventilation unit.
Conditions
: Ventilation unit connected to the eBUS with
VR 32
, Ventila-
tion unit with up to two eBUS heat generators
▶
Connect the eBUS line to the eBUS terminals in the wall
base of the radio receiver unit.
▶
Connect the eBUS line to the eBUS of the heat gener-
ator.
▶
Set the address switch for the
VR 32
in the ventilation
unit to position 3.
Conditions
: Ventilation unit connected to the eBUS with
VR 32
, Ventila-
tion unit with more than two eBUS heat generators
▶
Connect the eBUS line to the eBUS terminals in the wall
base of the radio receiver unit.
▶
Connect the eBUS line to the common eBUS on the
heat generator.
▶
Determine the highest possible position on the address
switch of the
VR 32
for the connected heat generator.
▶
Set the address switch of the
VR 32
in the ventilation
unit to the second highest position.
6
Start-up
6.1
Preparatory work for start-up
All the following preparatory work for starting up the heating
installation has been carried out:
–
The system control, radio receiver unit and outdoor tem-
perature sensor have been installed and wired.
–
The reception strength of the system control and outdoor
temperature sensor is
≥
4.
–
The installation assistant is at the
Have the installa-
tion assistants for all system components finished?
Press OK to confirm
query.
6.2
Starting up the heating installation
The system control's installation assistant takes you through
a list of functions. For each function, you should choose the
set value that is best suited to the heating installation being
installed.
You must not alter the settings of the functions listed below.
The installation assistant will configure these functions ac-
cording to the values you enter.
6.2.1
Have the installation assistants for all
system components finished? Press OK
to confirm
You have the option to start up system components that
have not yet been started up. Until a system component is
started up, the system control does not detect this system
component and cannot communicate with this system com-
ponent.
6.2.2
Searching for eBUS components ...please
wait…
The system control searches for system components that
communicate via eBUS. The system components that are
detected by the system control appear under
Components
found
. The system control does not show all system com-
ponents that are connected to eBUS.
6.2.3
Heating curve
In heating installations with a heat pump, the heat curve for
all heating circuits is 0.6.
In all mixed heating circuits with boilers, the heat curve is
0.6.
In all direct heating circuits with boilers, the heat curve is 1.2.
Setting the heating curve (
→
Page 16)
6.2.4
Domestic hot water
In heating installations with heat pumps, the desired temper-
ature of the domestic hot water is 55 °C.
In heating installations with heat generators, the desired tem-
perature of the domestic hot water is 60 °C.
Setting the target cylinder temperature (domestic hot water)
(
→
Page 18)
6.2.5
Zone assignment
The installation assistant assigns zones to the system con-
trol and the connected remote controls.
