Air Ducting, Ventilation Circuit; Electrical Connection - Helios ECgreen Vent KWL EC 800 S Pro WW Notice D'installation Et D'utilisation

Installation and Operating Instructions
EN
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WARNING
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ATTENTION
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WARNING
KWL EC 800 S Pro WW
KWL EC 1200 S Pro WW
KWL EC 1800/2600 S Pro WW
Central Ventilation Units KWL EC.. S Pro/WW
2.5

Air ducting, Ventilation circuit

When designing the ductwork, use the shortest possible runs. Airtight connections and changeovers must be ensured
for the best possible heat recovery. To avoid pressure losses, dirt build-up and noise, use smooth ducts (plastic or rigid
ducting). For main lines (outside, outgoing air, supply air distributor, extract collector) DN:
KWL EC 800 S.. = 250 mm
KWL EC 1200 S.. = 355 mm
KWL EC 1800 S.. = 400 mm
KWL EC 2600 S.. = 560 mm
or the corresponding duct is to be provided, and the ø is reduced accordingly for branch lines.
Outside and outgoing air pipes are to be insulated in an appropriate way to reduce condensation. The minimum insu-
lating thicknesses pursuant to DIN EN 1946-6, 05/2009 are to be observed. If supply and extract air ductwork runs
through unheated rooms, insulation must be provided to reduce heat losses. Supply air should be supplied to living and
bedrooms and extraction should take place in bathrooms, toilets and kitchens. To balance the whole system, supply
and extract air openings should be provided with adjustable valves (accessories).
A filter (accessory) is to be connected for the extraction of polluted extract air. The installation of extractor hoods to the
system is not permitted (reasons: dirt, fire danger, hygiene). Sufficient overflow openings (door gap, door grilles) are to
be provided to ensure air circulation within the room.
All fire and building regulations must be observed!
Manually adjustable shutters or iris shutters can be used exclusively to adjust sections with different air volumes. Auto-
matic volume flow controllers cannot used, since these negatively affect the controlling of the ventilation unit and
the achievement of a stable operating point and therefore they prevent the proper functioning of the ventilation system.
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2.6

Electrical connection

All maintenance and installation work must be carried out with the equipment fully isolated from the power
supply. The electrical connections must be carried out in accordance with the relevant wiring diagram and
must only be carried by certified electricians. The electrical connection must be fully isolated until the final
assembly!
The unit is equipped with a main switch and an isolator which can be secured against unauthorized switching with a
U-lock.
The relevant standards, safety regulations (e.g. DIN VDE 0100) and the technical connection conditions of the local
electricity supply companies must be observed. An all-pole mains switch / isolator, with a contact opening of at least
3 mm (VDE 0700 T1 7.12.2 / EN 60335-1) must be provided. The main switch and/or isolator can be secured against
unauthorized switching with a U-lock.
If a residual current circuit breaker is installed in the supply line of the EC fan, the residual current circuit breaker must
have the following technical characteristics:
Type A or B with a rated differential current of 30 mA.
The fan unit has a protective conductor current of <= 3.5 mA.
If a residual current circuit breaker is installed in the supply line of the EC fan, the residual current circuit breaker must
have the following technical characteristics:
Type B or B+ with a rated differential current of 30 mA.
The fan unit has a protective conductor current of > 3.5 mA.
ATTENTION:
1. The EC fan is exclusively designed for fixed connection, the connection via plug is not permitted.
2. The PE connection must be executed with 2 wires with min. 1.5 mm² or one 10mm² wire.
If a residual current circuit breaker is installed in the supply line of the EC fan, the residual current circuit breaker must
have the following technical characteristics:
Type B or B+ with a rated differential current of 300 mA.
The fan unit has a protective conductor current of > 3.5 mA.
ATTENTION:
1. The EC fan is exclusively designed for fixed connection, the connection via plug is not permitted.
2. The PE connection must be executed with 2 wires with min. 1.5 mm² or one 10 mm² wire.
The surface-mounted controller with touchscreen is connected to the unit by means of a 10 m connecting cable. The
electrical connection of the KWL EC ... S Pro / WW takes place directly in the terminal box. If special components are
to be connected, the connections must be made in the terminal box.
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