Vaillant Solar System and auroSTOR unvented solar..., Start-Up, Maintenance And Troubleshooting Manual

Page: 58 / 69

65 Manual - Solar hot water systems 0020009607_02
9 Notes for the owner
• Please read this manual thoroughly to ensure
optimum utilisation of your Vaillant hot water solar
system.
9.1 General notes
We recommend declaring the solar system as an
increase in value to the insurance and insuring it
explicitly against lightning. It may also make sense to
take out an insurance against hailstorms in particularly
prone areas.
9.2 Operation of the solar system
The solar system is set once during the start-up and
then works automatically. You do not even need to make
any adjustments when you go on holiday.
H
Danger!
Risk of burns!
The collectors and pipes can become very hot –
be careful when touching them!
H
Danger!
Risk of scalding and bursts due to inappropriate
alterations!
You must not make any changes to the cylinder
or controller, to pipework or to electricity (if
available), to the pressure release pipe and to
the expansion relief valve for the stored water.
Otherwise steam can escape, pipes can burst or
the system may be damaged. The system
operates automatically after the initial
commissioning.
In order for your Vaillant solar system to work perfectly,
please observe the following instructions:
• Do not open or close any of the valves.
• Never switch off the solar system – even when you go
on holiday or assume an error has occurred.
Only exception:
The tube(s) of a Vaillant tube collector have been dama-
ged, resulting in a pressure drop in the solar system or
solar fluid escaping. Observe the notes in Section 9.7,
What should be done if …
Do not take out the fuse or switch off the fuse box.
Do not under any circumstances fill the solar circuit
yourself.
9.3 Operation of the solar cylinder
Your boiler and the unvented auroSTOR solar cylinder
are provided with connections for a solar system as well
as a reheating system.
How to control the solar system is described in the
manuals for each controller.
h
Note!
In the event of leaks in the water pipework
close the cold water stop valve at the cylinder
immediately to limit any water damage.
The cold water stop valve can be found in the pipe joint
from your domestic water connection to the solar
cylinder (cold water connection) normally nearby the
cylinder.
H
Danger!
Risk of scalding
The outlet temperature at the taps can be up to
85 °C with Vaillant VIH S GB 200 S,
VIH S GB 250 S and VIH S GB 300 S solar
cylinders.
a
Caution!
Risk of frost!
The cylinder must be completely drained if its
is to be shut down for a long period of time in
an unheated room (e. g. winter holidays etc.).
Have the cylinder drained by a specialist.
9.3.1 Setting the standby temperature of the
cylinder
You can set the standby temperature of the cylinder, the
maximum cylinder temperature and also the minimum
temperature for reheating with the boiler on the
controller according to the design of your system.
If no controller is used, the standby cylinder
temperature is set on the hot water thermostat installed
in the solar cylinder.
The hot water thermostat for the boiler for reheating
the auroSTOR can be set between 20 and 65 °C. The
desired temperature is set by the installer during the
start-up of the auroSTOR solar cylinder.
Maximum energy efficiency can be achieved in the
45 °C setting.
• Make sure the boiler is ready for operation in
accordance with the operating manual supplied with
the appliance.
• Set the standby cylinder temperature on the controller
or on the hot water thermostat of the cylinder
according to the design of your system.
The setting options can be taken from the operating
manual of the corresponding controller.
h Note!
In areas with hard water the set hot water
temperature should not exceed 45 °C to avoid
calcification. The temperature for solar heating
can be set up to a maximum of 80 °C. It is
controlled by the auroMATIC 560 solar control.
Notes for the owner 9