Scope Of Delivery/Design; Installation Preparation; Installation; Electrical Connection / Start-Up - Helios InlineVent KR EC Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
CHAPTER 6

INSTALLATION

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NOTE
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WARNING
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EC Rectangular Centrifugal Fans – InlineVent
All of the following information and instructions are intended solely for
authorised electricians!
6.0

Scope of delivery/Design

The rectangular centrifugal fans KR.. EC consist of a sheet steel casing, with duct flange profiles on both sides, an
impeller and an electric motor mounted to the casing. The motor-impeller-unit can swing out.
The silenced rectangular centrifugal fans SKR.. EC consist of a sheet steel casing, with duct flange profiles on both
sides as well as sound insulation made of 50mm thick mineral fibreboard, and a motor-impeller-unit mounted to the
motor bedplate. Cover easily removable through swing tops. Motor and impeller can swing out. There is a terminal box
for connection to the mains power supply on the outside. The fans are delivered as fully assembled units. Leave the
SKR../KR..EC unit in the packaging until installation in order to prevent any possible damage and contamination. during
transport and on site.
m CAUTION
You can cut or scrape yourself due to sharp edges. Wear protective gloves when unpacking!
6.1

Installation preparation

m CAUTION
You can cut or scrape yourself due to sharp edges. Wear protective gloves when checking unhindered running of
impeller!
The fan is delivered as a complete unit as standard, i.e. ready for connection. The EC rectangular centrifugal fans can
be installed in any position in rectangular duct systems. The installation and start-up of the fan should take place after
the completion of all other works and after the final cleaning, in order to prevent damage and contamination of the
ventilation unit. In order to prevent the warping of the fan casing, the attachment must be level and sufficiently stable.
After the removal of packaging and the start of installation, the following points must be checked:
– is there any transport damage,
– broken or bent parts
– free movement of the 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.
6.2 Installation
During installation, ensure that structure-borne sound transmission is prevented. Mount with corresponding damping
elements (accessories SDD / SDZ) provided. Furthermore, e.g. use flexible couplings VS.., counterflange GF.. and duct
silencer KSD.. (accessories, page 6) for ducts. With regard to duct installation, it must be ensure that there is a sufficient
length of straight duct (min. 1x long side) before and after the fan, as otherwise significantly reduced outputs and
increased noise levels can be expected. Carry out installation and inspection flap so that problem-free fan maintenance
is possible without removal. The fan may only be mounted to walls, ceilings and consoles etc. with sufficient load bea-
ring capacity!
NOTE!
Full fan performance can only be achieved with free inflow and outflow.
Sufficient motor cooling must be ensured, so that there is a minimum air flow area of 20 % for the fan cross-section.
6.3

Electrical connection / Start-up

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Touching live parts will lead to electric shock.
Isolate the unit from the mains power supply before connection!
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Waiting period of at least 5 minutes!
When using capacitors, there is a danger to life after deactivation due to the direct touching of live parts.
Terminal compartment access is only permitted after the power supply is disconnected and a 5 minute waiting
period.
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WARNING!
The unexpected rotating impeller can crush fingers.
Ensure protection against contact before start-up!
– The electrical connection and initial start-up 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!
– A multipole 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 line so that no water can get in along the cable in case of water exposure.
– Check designated use of fan
– Compare mains voltage to rating plate data
– Check fan for solid mounting and professional electrical installation
– Check all parts for tightness, particularly screws, protection guards. Do not loosen screws in the process!
– Check free movement of the impeller.
® KR EC ... / SKR EC
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EN