Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 8

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 heating
water that is of potable water quality.
Intended use 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 shall be deemed
inappropriate.
Safety instructions regarding maintenance and cleaning
Danger
The appliance mains isolator on the boiler is
used to isolate the control unit from the power
supply. It does not turn off the mains power sup-
ply.
There are live components inside the control
unit enclosure.
Danger
Fire from apertures and hot surfaces can cause
serious injuries.
■ Apertures fastened shut with screws must not
be opened during heating operation.
■ Only open the boiler after it has cooled down.
■ Wear personal protective equipment.
Danger
During maintenance and cleaning work, and
when manipulating the ash box, there is a risk of
fire and burns due to hot components and ash.
■ Wear suitable safety gloves.
■ Only dispose of the hot ash in fireproof con-
tainers with covers.
8
Any usage beyond this must be approved by the man-
ufacturer in each individual case.
Incorrect usage or operation of the appliance (e.g. the
appliance being operated for longer periods when
open) is prohibited 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) or if other fuels than those intended for this
appliance are used.
Danger
Pellet dust, ash and soot pose a danger to the
respiratory tract during cleaning work and when
manipulating the ash box.
Wear a dust mask to protect your respiratory
tract.
Danger
Risk of crushing or entanglement by rotating or
moving parts.
Do not reach in through the maintenance cov-
ers.
Do not remove any protective covers.
Danger
There is a risk of falling due to slipping and trip-
ping on the ash box.
Do not stand on the ash box.
Note
Before restarting the heating system, all opened cov-
ers and flaps on the boiler must be closed again.