Viessmann Vitopend 100-W Installation And Service Instructions Manual page 9

Frost protection
Following installation or repairs,
switch ON the power supply
(MCB/fuse, mains isolator) and
the control unit ON/OFF switch.
Open the gas shut-off valve to
ensure frost protection.
Intended use
The appliance is intended solely for
installation and operation in sealed
unvented heating systems that comply
with EN 12828, with due attention paid
to the associated installation, service
and operating instructions. It is only
designed for heating up heating water
that is of potable water quality.
Intended use presupposes that a fixed
installation in conjunction with permissi-
ble, system-specific components has
been carried out.
Commercial or industrial usage for a
purpose other than heating the building
or DHW shall be deemed inappropriate.
(cont.)
Any usage beyond this must be
approved by the manufacturer in each
individual case.
Incorrect usage or operation of the
appliance (e.g. the appliance being
opened by the system user) is prohibi-
ted and will result in an exclusion of lia-
bility. Incorrect usage also occurs if the
components in the heating system are
modified from their intended use (e.g. if
the flue gas and ventilation air paths
are sealed).
Warning notices
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