Description; Precautions; Structure; Connection/Assembly - Vortice NA Notice D'emploi Et D'entretien

ENGLISH

Description

Noise attenuators for circular ducts manufactured from galvanised steel. Circular spigot connections are
available in standard diameters of 100-125-160-200-250-315-355-400 mm (DIN 24145).

Precautions

Warning:
this symbol indicates that care must
be taken to avoid injury to the user
• Do not use the appliance for any application other than that stated in this booklet.
• After removing the appliance from its packaging, ensure that it is complete and undamaged. If in doubt contact
a professionally qualified electrician or Vortice.
• Do not leave packaging within the reach of children or infirm persons.
• Do not sit on or place objects on the appliance.
• Have the filters of the noise attenuator serviced and replaced only by suitably qualified personnel.
Caution:
this symbol indicates that care must
be taken to avoid damaging the appliance
• Do not make any modifications of any kind to your appliance.
• The appliance must not be exposed to atmospheric conditions (rain, direct sunlight, etc.).
• Install the appliance in accordance with the manufacturer's instructions.
• Do not place objects on the appliance.
• Regularly inspect the appliance for visible defects. If any faults are found, do not operate the appliance but
contact Vortice* immediately.
• If the appliance does not function correctly or develops a fault, contact Vortice* immediately and ensure that
only genuine original Vortice spares are used for any repairs.
• If the appliance is dropped or suffer a heavy blow, have it checked immediately by Vortice*.
* (or an authorised Service Centre if you are outside the
UK-Ireland territory)
Notes
• The flow of air or fumes injected into the appliance must be clean (that is free from grease,
smoke, chemical or corrosive substances or explosive and inflammable mixtures).
The NA noise attenuator must be installed on a ventilation line, upstream or downstream from
•
the fan, and always upstream from the air heater (AH), if present, and downstream from the air
filter (AF). To install the air attenuator, it is sufficient to insert it into the tube (Fig. A).
The appliance is designed for use in ventilation systems that specifically require a low overall
•
noise.
The appliance is designed to operate indoors with temperatures ranging from 30 °C to 60 °C, to
•
convey clean air. It is not suitable for use for air laden with dirt, grease, smoke, chemical and
corrosive agents.
It is necessary to make sure that no condensate circulates or accumulates within the tubes.
•
• The appliance can be installed by inserting it into ducting with appropriate dimensions.
Pressure losses should be calculated in accordance with the diagram on page 11.
•

Structure

Internal tube in drilled aluminium sheet spiral with a thickness of 0.1 mm.
Containment heads in PE film.
Insulation in basalt wool with a thickness of 40 mm.
Thermal insulance R = 1.00 m2k/W.
External tube in aluminium sheet spiral with a thickness of 0.1 mm.

Connection/Assembly

The appliance is connected to the system by means of a forced insertion on two cylindrical fittings in galvanised
steel with circular rubber built-in "T" seals.
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