Download Vaillant auroTHERM VFK 900 Technical data

Notes for the owner 9
Caution!
a Risk
of damage!
Caution!
a Risk
of damage!
In the unlikely event of a malfunction occurring of the
auro STOR, such as hot water flowing out of the
temperature and pressure relief valve, switch off the
boiler and the immersion heater and contact Vaillant
Ltd. or your installer.
9.6
Do not remove or modify any components of
the solar cylinder.
h Note!
If the auroSTOR has been installed in a cup-
board for ventilation purposes, make sure no
items of clothing or other objects are placed on
the cylinder, control devices, lines or other
system components.
h Note!
Keep it accessible to allow the operation of the
hot water thermostat control and the mixer
valve.
9.3.2 Switching off the solar cylinder
To switch off the heating and hot water system
temporarily, simply switch off the boiler (refer to the
operating manual of the boiler).
9.4
Frost protection
9.4.1 Frost protection of the solar system
• Have the solar system checked for frost protection
once a year by a qualified servicing company. This
work is usually part of a maintenance agreement with
your approved specialist.
Do not refill the solar circuit with fluid. Do not mix the
solar fluid with other fluids.
Do not use any abrasives or solvents, since
they could damage the exterior or the
connections.
Maintenance
9.6.1 Maintenance of the solar system
The prerequisite for permanent operational readiness,
reliability and a long service life is that regular
inspections and maintenance work are performed on
your Vaillant solar system by the specialist. Never
attempt to perform maintenance work or repairs
yourself. Assign an approved qualified servicing
company with this work. We recommend making a
maintenance agreement. Observe our maintenance
checklist in Section 7, Inspection and maintenance, for
the contents of the maintenance agreement.
d Danger!
Risk of damage to the system or personal
injury!
The operational reliability of the system can be
impaired, resulting in damage to property or
personal injury, if the inspections and
maintenance work are not carried out.
The solar gain of the system may not meet expectations
as a result.
d Danger!
Risk of serious injury or death!
Never try to correct faults in the solar system
yourself. Bear in mind that you risk death or
serious injury if the work is performed
incorrectly. Consult an approved qualified
servicing company in the event of malfunctions.
9.4.2 Frost protection of the solar cylinder
Make sure the central heating remains switched on and
the temperature in all rooms and the installation room
of the auroSTOR solar cylinder are kept above freezing
point if you are absent for long periods.
9.6.2 Maintenance of the solar cylinder
Just like for the entire solar system, regular inspections
and maintenance by a specialist are the best way to
ensure reliability and a high service life also for the
Vaillant VIH S GB 200 S, VIH S GB 250 S and
VIH S GB 300 S cylinders.
9.5
It is important that your hot water cylinder is serviced
annually. 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.
Care
9.5.1 Care of the collectors
The collectors do not have to be cleaned. Solar
collectors become dirty in the same way as roof
windows. They are cleaned sufficiently by rain however.
9.5.2 Care of the solar cylinder
You can clean the exterior of the solar cylinder with a
damp cloth and a little soap.
Manual - Solar hot water systems
61