Assembly; Electrical Connection - Helios MultiVent MV EC Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
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ATTENTION
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IMPORTANT NOTE
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WARNING
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MultiVent MV EC..
3.1

Assembly

Variable positioning of the fan or terminal box is possible, depending on installation conditions (see Fig. 16).
Fig.16
– Structure-borne sound transmission
It must be ensured that structure-borne sound transmission to the building and duct system is prevented!
The MultiVent ® EC fans must be connected to the duct system by means of flexible sleeves (see Fig. 17). For this
purpose, e.g. for installation in ducting, use a flexible sleeve FM.. (accessories) or an elastic underlayer between the
mounting surface and mounting bracket (Fig. 18).
Fig.17
– Duct installation
To achieve the given sound and power data, it is necessary when connecting the fan box to a ducting system
to have at least twice the duct diameter of straight ducting before and after the fan box. Otherwise there
may be a loss of performance and higher sound levels.
Full fan performance is only achieved when there is free suction and discharge. With regard to sufficient motor
cooling, it must be ensured that there is a minimum air flow area of 20 % of the fan section.
– Condensate formation
In case of periodical use, moist and warm media and through temperature variations (intermittent service), condensate
is built up in the duct and its draining off must be ensured. In case of condensation in ducting and casing of the fan,
appropriate measures must be taken (water bag, drainage) during installation.
Under no circumstances must the motor be exposed to water!
3.2

Electrical connection

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The unit must be isolated from the mains power supply before maintenance and installation work or before
opening the inspection area!
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Direct contact with the components of the board must be prevented in order to avoid the risk of electrost-
atic discharges and the resulting damage!
– Electrical connection may only be carried out by an approved qualified electrician according to the following diagrams
(chapter 7) or according to the diagram printed underneath the terminal box cover!
– The electrical connection must be fully isolated from the supply up to the final assembly!
– All relevant standards, safety regulations (e.g. DIN VDE 0100) as well as the technical connection regulations of the
energy supply companies must be adhered to.
– An all-pole mains switch/isolator switch, with a contact opening of at least 3 mm (VDE 0700 T1 7.12.2 / EN 60335-1)
is mandatory.
– The rated voltage and frequency must correspond with the data on the type plate.
– When connecting to plastic terminal boxes, metal screw-type conduit fittings may not be used.
– The power cable must be introduced so that, in case of water exposure, water entry along the power-supply cable is
impossible. The cable must not be placed over sharp edges.
Fig.18
Flexible sleeve FM..
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Wall
Mounting to the wall with
elastic underlayer
EN