Electrical Connection / Commissioning; Operation; Functional Description - Helios MultiVent MV EC125 Notice De Montage Et D'utilisation

Installation and Operating Instructions
EN
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WARNING
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CHAPTER 6
FUNCTION FOR
INSTALLER
NOTE!
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ATTENTION
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WARNING
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MultiVent MV EC
5 .3

Electrical connection / Commissioning

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Danger to life due to electric shock!
Touching live parts will lead to electric shock .
Isolate the unit from the mains power supply before connection!
When using capacitors, there is danger to life after deactivation due to the direct touching of live parts . Termi-
nal compartment access is only permitted after power supply is disconnected and 5-minute waiting period .
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Risk of injury!
The rotating impeller can crush fingers .
Ensure protection against contact before commissioning!
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Material damage due to improper installation of the control cable!
The mains cable must always be installed separately from the control cable .
If this is not possible, a cable with the insulation level of the 230 V mains cable must be used for the control
cable .
– The electrical connection and initial commissioning must only be carried out by qualified electricians
according to the information in the attached wiring diagrams .
– All relevant standards, safety regulations (e.g. DIN VDE 0100), as well as the technical connection conditions of
energy suppliers are to be adhered to!
– An all-pole mains section switch/isolator, with a minimum contact opening of 3 mm (VDE 0700 T1 7.12.2 / EN
60335-1) is mandatory!
– Network configuration, voltage and frequency must be consistent with the rating plate information.
– Check the waterproofing of the connection cable and tight clamping of the strands.
– Metal cable screws must not be used when connecting to plastic terminal boxes.
– Insert the supply cable so that no water can get in along the cable in case of water exposure. Never place the cable
over sharp edges.
– Check designated use of fan
– Check fan for solid mounting and professional electrical installation
– Check all parts for tightness, particularly screws, nuts, protection guards. Do not loosen screws in the process!
– Check free movement of the impeller.
Wear protective gloves when checking unhindered running of impeller!
– When the impeller is turned by hand, there will be slight resistance due to the permanent magnets. This is for
technical reasons and it is not a malfunction.
If a residual current circuit breaker is installed in the supply line of the KWL unit, the residual current circuit breaker
must have the following technical features:
Type A or B with a rated differential current of 30 mA .
The EC fan has a leakage current of <= 3,5 mA, calculated according to DIN EN 50178 image 4.
5 .4

Operation

In order to ensure the proper functioning of the fan, the following must be checked regularly:
– Formation of dust or dirt deposits in the casing or on the motor and impeller
– Freewheeling of impeller. Wear protective gloves when checking freewheeling of impeller!
– Occurrence of excessive vibration and noise
If excessive vibration or noise occurs, maintenance must be carried out according to the instructions in chapter 7.
6 .0

Functional description

The fans are variable speed controllable by means of a 0-10 V control voltage. Suitable potentiometers (type PU/A 10),
three-step switches (type SU/A) are available in the Helios accessory range. Variable speed control is possible with a
universal control system (type EUR EC). Alternatively, the electronic differential pressure/temperature controller EDR /
ETR can be used.
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Activation / deactivation:
EC fans can be frequently activated and deactivated via the 0-10 V control input or the release input
depending on the type . This is gentle on the electronics and ensures a long service life . Control via the
power supply (on/off) is not recommended . In general, there must be an interval of at least 120 seconds
between activation and deactivation .
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In case of strong vibrations and/or noises, maintenance must be carried out by a specialist according to
chapter 1 .4 .
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In order to ensure sufficient motor cooling, a minimum speed/voltage, which also depends on on-site
resistances, wind pressure, etc ., must be observed .
The use of other brands, especially other electronic devices, can lead to malfunctioning and even destruction
of controller and/or fan . Controllers which have not been cleared by Helios are not liable for warranty and
guarantee claims .
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