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2. Essential safety instructions
2.1 General safety instructions
● Electrical installation and repairs are only
permitted when carried out by trained
specialists.
● Ask your installer to instruct you in the
ventilation unit and operating unit.
● Switch the ventilation unit off immediately
if you discover damage or faults that could
endanger persons or property. Prevent
further use.
● Disconnect the ventilation unit from the
mains before any cleaning or maintenance
.
work
(Switch off mains fuse in fuse box
and position a clearly visible warning notice
to avoid the unit being accidentally
switched back on.)
● Do not modify the unit in any way
original spare parts
MAICO does not assume any liability for
modified units or parts from other manufac-
turers.
● Never operate the ventilation unit without
all duct connections and sound absorbers
Sound absorbers significantly reduce the
noise emissions.
● Never operate the ventilation unit without a
filter.
● Check the filter regularly for dirt and dam-
age. See "Maintenance" chapter.
● After the unit has been switched off for
some while, e.g. in the summer, replace
the filters before starting up again to en-
sure complete hygiene.
The unit is not intended to be used by
i
people whose physical, sensory or
mental capabilities are not sufficient
for them to understand and put into
practice the safety information pro-
vided in these instructions. This limita-
tion also applies to children.
The unit may however be safely used
by such persons if they are super-
vised by someone responsible for
their safety or if they are instructed in
a suitable way.
4
.
Only use
.
Danger of injury.
2.2 Intended use
● The WRG 300 / 400 EC unit is a central
ventilation unit with heat recovery for vent-
ing and extracting air in one or more
rooms.
● The unit usually extracts the exhaust air
from kitchens, bathrooms and WCs with
high odour and humidity levels and feeds
fresh air to the bedrooms and living rooms.
● For the controlled ventilation of apartments
and single family-unit houses.
● The ventilation unit may only be used in
line with the calculations carried out by the
Engineering office.
2.3 Predictable misuses
Maico is not liable for damages caused by
usage not for the intended purpose.
The fan unit should not be used:
● close to flammable materials, liquids or
gases.
● to convey chemicals,
aggressive gases or vapours.
.
● in potentially explosive atmospheres
● in swimming pools
● for drying out new builds
● in combination with laboratory extractors.
● in combination with extractor hoods that
are connected directly to the controlled
domestic ventilation exhaust air channel.
For energy-usage reasons, we rec-
i
ommend using extractor hoods in
circulating air mode.
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