Care; Inspection And Maintenance; Installation 5; Installation Location - Vaillant uniSTOR Operating And Installation Manual

Note!
h
For reasons of economy and hygiene, we re-
commend setting the cylinder temperature to
60 °C and to 55 °C on the VIH RW 300 heat
pump cylinder, owing to the low system tem-
peratures. This ensures the most efficient use
in terms of the energy saving law (EnEG) and
slows down the deposition of limescale in the
cylinder.
Proceed in the reverse sequence when taking the cylin-
der out of service and also drain the cylinder if neces-
sary (e.g. if there is a risk of frost).
d Danger!
Do not block the expansion relief valve or the
blow-off line - this could cause the overpres-
sure in the cylinder to build up to more than
10 bar.
4.2

Care

A damp cloth soaked with soap solution is all you need
to clean the outer parts of the cylinder.
To avoid damage to the casing of your appliance, please
do not use any abrasive or solvent cleaning agents (any
type of abrasive, petrol, etc.)
4.3

Inspection and maintenance

The prerequisite for permanent operational readiness,
reliability and a long service life is that regular inspec-
tions/maintenance work are performed on the cylinder
by the technician.
a Caution!
Never try to carry out maintenance work on
your appliance of your own accord. Use an ap-
proved qualified servicing company for this
work.
We recommend making a maintenance agreement with
an approved qualified servicing company.
d Danger!
The operational reliability of the appliance can
be impaired, resulting in damage to property or
personal injury, if inspections or maintenance
work are not carried out.
We recommend periodic de-scaling if the water is very
calcareous.
Operating and Installation Manual for uniSTOR, auroSTOR, geoSTOR Cylinders 0020080043_00
5 Installation
a Caution!
The appliance may only be installed and put
into service by a suitably qualified heating en-
gineer. The engineer also assumes responsibili-
ty for professional and approved installation
and initial commissioning.
A sign that reads as follows must be mounted near the
blow-off line for the expansion relief valve:
"For safety reasons, water escapes from the blow-off
line of the expansion relief valve while the cylinder is
heated. Do not block the line."
5.1

Installation location

The DHW cylinder should be installed in the immediate
vicinity of the heat source. Unnecessary heat losses can
be avoided as a result.
When choosing the installation site, take the weight of
the filled cylinder into account. Choose the installation
site for the cylinder so that the pipes on both the hot
water and the heating and solar side can be laid conven-
iently.
The DHW cylinder must be installed in a frost-protected
room.
To prevent energy losses, thermal insulation should be
fitted on all hydraulic pipes in accordance with the heat-
ing systems ordinance.
5.2

Dimensions

5.2.1 Tilting dimensions for VIH S, VIH R and
VIH RW
VIH 300 VIH 400
Fig. 5.1 Tilting dimensions for VIH S, VIH R and VIH RW
Operation 4

Installation 5

VIH 500
5