Intended Use - Viessmann VITODENS Operating Instructions Manual

Introductory information

Intended use

The appliance is only intended to be installed and
operated in sealed unvented heating systems that
comply with EN 12828, with due attention paid to the
associated installation, service and operating instruc-
tions. It is only designed for the heating of water that is
of potable water quality.
Intended usage presupposes that a fixed installation in
conjunction with permissible, system-specific compo-
nents has been carried out.
Commercial or industrial usage for a purpose other
than heating the building or DHW does not comply with
regulations.
Commissioning
The commissioning and matching of the control unit to
local conditions and building characteristics, as well as
instructing the user in the operation of the system,
must be carried out by your heating contractor.
Terminology
To provide you with a better understanding of the func-
tions of your Vitotronic control unit, some terminology
is explained.
The terms are marked as follows:
Your system has been preset
Your heating system is preset at the factory and is
therefore ready for operation:
Central heating
Between 06:00 and 22:00 h, the rooms are heated
■
to 20 °C "Set room temperature" (standard heating
mode).
Between 22:00 and 06:00 h, the rooms are heated
■
to 3 °C "Set reduced room temp" (reduced room
temperature, frost protection).
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Any usage beyond this must be approved by the man-
ufacturer for the individual case.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and results in an exclusion of liability. Incorrect
usage also occurs if the components in the heating
system are modified from their intended function (e.g.
if the flue gas and ventilation air paths are sealed).
As the user of new combustion equipment, you may be
obliged to notify your local flue gas inspector of the
installation [check local regulations]. Your local flue gas
inspector will also inform you [where appropriate]
about work he may be required to carry out on your
combustion equipment (e.g. regular checks, cleaning).
Further information can be found in chapter
"Terminology" in the appendix.
DHW heating
Between 05:30 and 22:00 h, the DHW is heated to
■
50 °C "Set DHW temperature". Any installed DHW
circulation pump is switched on.
Between 22:00 and 05:30 h, the DHW cylinder is not
■
reheated. Any installed DHW circulation pump is
switched off.
Note
If DHW heating began before 22:00 h, it is stopped.
Frost protection
Your boiler and DHW cylinder are protected against
■
frost.
Wintertime/summertime changeover
This changeover is automatic.
■