Area Of Application; Personnel Qualification - Helios KWL 340 D Manual

Installation and Operating Instructions
Central ventilation unit – KWL 220/340 D
• Contact with rotating parts must be avoided. The unit may only be operated
with a closed unit cover and piping.
• A uniform inflow and free outlet must be ensured!
• When using vented fire places in a ventilated room, there must be sufficient
supply air for all operating conditions. Consultation with the chimney sweep is
required. The locally applicable regulations and laws must be observed!
• The following must be observed before all installation or before opening the
terminal compartment:
◦ Isolate the unit from the mains power supply and secure against unintended
restart!
◦ The rotating parts must first come to a standstill!
◦ Once the rotating parts come to a standstill, a waiting time of 5 min. must be
observed, as dangerous voltages may be present due to internal capacitors,
even after isolation from the power supply!
• It must be ensured that there no foreign bodies remain in the unit after any
work!
• The unit may only be opened by an authorised electrician and instructed end
users.
• If the unit network cable is damaged, it must be replaced by the Helios custo-
mer service team or a qualified electrician.
1.4

Area of application

– Intended use
The central ventilation unit KWL 220/340 D with heat recovery is designed for the central supply and extract ventilation
of residential houses and apartments. The unit is suitable for conveying normal or slightly dusty (particle size < 10 μm),
less aggressive and humid air in a moderate climate and in the range of its performance curve. The maximum permis-
sible air flow temperature is +40 °C.
Operation is only admissible with fixed installation within buildings. The unit is designed for installation on the ceiling
or installation in a cabinet. The standard equipment allows installation and operation in frost-free rooms from +5 °C to
+40 °C and a relative humidity < 90 % (non-condensing).
Any other use than the intended use is prohibited!
– Reasonably foreseeable misuse
The unit is not suitable for operation under difficult conditions, such as high levels of humidity, aggressive media, long
standstill periods, heavy contamination (e.g. greasy air), excessive loads due to climatic, technical or electronic influen-
ces. The same applies for the mobile use of the unit (vehicles, aircraft, ships, etc.). Usage under these conditions is only
possible with release approval from Helios, as the standard version is not suitable in this case.
The operating point must not lie outside of the characteristic curve.
– Improper, prohibited use
The conveying of solid matter or solid matter content > 10 μm in the air and liquid is not permitted. Transport media,
which affect the materials of the fan, and abrasive media are not permitted.
Use in explosive atmospheres is not permitted.
The unit must not be operated without piping or with an open unit cover.
1.5

Personnel qualification

The electrical connections and electrical commissioning may only be carried out by qualified electricians.
Installation work may only be carried out by trained specialists (e.g. industrial mechanics, mechatronics engineers, ven-
tilation fitters or persons with comparable education).
The operation, maintenance and cleaning work on the unit as well as filter replacement and condensate drain may be
carried out by instructed end users.
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