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8 VRC 430/VRC 430f Operation level for the operator
9 Technical data
10 Manufacturer's guarantee and works customer service
Adjust the hot water target value according to
your requirements on display screen
controller.
(This procedure is described in the operating manual for
the controller).
The setting for the hot water target value should
be as low as possible.
The lower the set target temperature is, the less
frequently the boiler will need to reheat the water. More
solar energy will be used.
Note
h
The lower the target value is the less often the
boiler will need to reheat the water. The solar
energy which is free of charge can be used more
frequently.
8.1.2 Optimisation at the operation level
for the expert technician
Note
h
Have the maximum temperature of the solar
cylinder adjusted by the expert technician to
obtain an optimum solar yield.
In order to obtain the maximum possible yield via solar
heating of the cylinder but also protect against scalding
and calcification, the maximum temperature of the solar
cylinder can be specified. If this maximum temperature
is exceeded, the solar pump is switched off.
h
Note
This temperature must not exceed the
maximum permissible water temperature for
the cylinder used!
The expert technician can adjust the maximum
temperatures of the cylinders in display screens C12 and
C13.
The maximum value should be as high as possible
to achieve a high solar yield.
H
Danger!
Risk of scalding by hot water!
When the target temperature is above 60 °C,
there is a risk of scalding at the hot water taps.
Young children and elderly persons are
particularly at risk, even at lower temperatures.
Select the target temperature so that nobody is
in danger.
24
9
Technical data
10 of the
Operating voltage
Power consumption
Contact load of the output relays (max.)
Maximum total current
Maximum permissible ambient temperature
Operating voltage sensor
Minimum cross-section of the sensor cables,
eBUS cables
Minimum cross-section of power cable (rigid
cable, NYM)
Dimensions of wall mounting base
Height
Width
Depth
Level of protection
Protection class for controller
Table 9.1 Technical data
10 Manufacturer's guarantee and
works customer service
Vaillant warranty
We only grant a Vaillant manufacturers warranty if a
suitably qualified engineer has installed the system in
accordance with Vaillant instructions. The system owner
will be granted a warranty in accordance with the
Vaillant terms and conditions. All requests for
work during the guarantee period must be made to
Vaillant Service Solutions (0870 6060 777).
Vaillant Service
To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance
Agreement. Please contact Vaillant Service Solutions
(0870 6060 777) for further details.
Operating and Installation Manual for Solar Module VR 68 0020054784_00
Unit
VR 68
V
230
VA
4
A
2
A
4
°C
40
V
5
mm
2
0.75
2
mm
1.5
mm
174
mm
272
mm
52
IP 20
II
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