EN
Walter Meier reserves the right to alter specifications.
waltermeier.com
16
INSTRUCTIONS FOR USE
Important information
Qualified personnel only
The installation work, the entering of
settings and commissioning should be
carried out by qualified personnel only.
Standards and requirements
The pertinent national standards and
regulations dealing with installation, the
entering of settings and commissioning
must be followed if the equipment is to
operate correctly.
Measurements and
electrical work
Isolate the ventilation unit from the
electrical supply grid before you carry
out voltage tests, measure the electrical
insulation resistance at various points
or perform other remedial measures
that could damage sensitive electrical
equipment.
Surge protection
Walter Meier recommends that all ven-
tilation units equipped with Premium
automatic control be equipped with a
surge protection device.
To open the ventilation unit for
service
Always ensure that the ventilation
unit’s power supply has been isolated
before you open the ventilation unit’s
inspection door! Wait a few minutes
before you open the inspection door
so that the fans have time to stop and
possible air heaters have time to cool
down.
There are no components inside the
electrical equipment cabinet that can
be serviced by the user. The servicing of
these components must be delegated
to service personnel. Do not restart the
ventilation unit before you’ve identified
the cause of the fault and service per-
sonnel have serviced the ventilation unit.
The ECO models (water-heated
air heater)
The ECO model ventilation unit should
be equipped with shut-off damper so
that the water-heated air heater cannot
freeze during a power failure.
Drying laundry
A tumbler dryer of extract air type or a
drying cabinet must not be connected
to the system due to the high mois-
ture content in the air it discharges.
However, we recommend the use of a
condensing tumbler dryer without duct
connection.
