4. Summary and principle
The fan is part of a mechanical ventilation system and
is designed for the extraction of stale indoor air. It can
either be used as a roof extract fan with free-fl ow suc-
tion or it can be connected to ventilation ducts.
The fan can be operated with a 3-position switch
The direct current version also with RF or 0-10Volt. The
fan can also be equipped with a non-powered extractor
hood, positioned above the cooker. Correct use of
these settings will ensure optimal extraction of cooking
smells and moisture through the central system.
The system has been designed to be in operation 24
hours a day. For energy saving purposes, a low-current
electric motor has been fi tted.
4.1 Information for the fi tter
The fan is constructed of aluminium piping and a
plastic casing. This casing is made up of a cowling,
fi xed blades, a motor plate, and a lid, and also includes
an air cap, electrical control system and identifi cation
plate.
4.2 Electrical dangers
There is a risk of electric shock during installation
or maintenance. Acquaint yourself with the following
safety measures prior to commencing installation or
maintenance:
• Always disconnect the power fi rst or remove the
plug from the connection box prior to carrying out
maintenance on the fan.
• Only reconnect electrical power or re-insert the plug
in the connection box when the fan has been fi tted
and the cover closed.
4.3 Electrostatic discharge (ESD)
There is a risk that printed circuits (PCBs) with compo-
nents might be damaged by an electrostatic discharge
when being exchanged. For this reason, always take
ESD-inhibiting measures when dealing with PCBs, such
as wearing an antistatic wristband.
4.4 Mechanical dangers
There is a risk of injury from moving parts during
installation or maintenance. So never open the fan or
uncouple hoses while the fan is in operation.
5. Fitting RPM(e)
The RPM(e) pipe fan is designed to be fi tted to a roof
and connected directly to ventilation ducts. An adhesive
plate can be used when the roof passage has to pass
through a fl at roof. For sloping roofs, a tile piece or lead
fl ashing should be used. After fi tting of the adhesive
plate or tile piece, the perilex plug, of the separate
connection cable, has to be fed into the building from
above. The RPM(e) should be attached to the roof sub-
assembly using the bracket supplied.
Take care that the connection cable does not
get pinched between the cowling and the
adhesive plate, as this can damage it.
Never use screws to fi t the RPM(e) to the
adhesive plate.
6. Fitting VPM(e)
The VPM(e) roof fan is designed to be mounted on a
fl at roof. In most cases, the VPM(e) will be used for
free-fl ow air extraction. For this reason, the VPM(e) is
mounted to the dedicated mounting curb (DOS245) us-
ing its base plate. When fi tting the VPM(e) to the mount-
ing curb, the connection cable must fi rst be fed through
the mounting curb. The mounting curb can also be
fi tted with a silencer (GDH245). The VPM(e) base plate
is also equipped with a connection collar for a duct with
a ø200 mm fl ange connection. This can be fastened
using three M5x10 bolts. Use a gasket or sealing strip
The fan may not extrude more than 5° from
the lead.
Ensure that the four corners of the base on
which the fan is mounted are level.
The connection cable may not be removed
from the base plate pull relief.
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