Application - Operation; Function And Mode Of Operation; Performance Data; Fireplaces - Helios KWL EC 170 W Notice De Montage Et D'utilisation

Installation and Operating Instructions
EN
+
IMPORTANT
+
IMPORTANT
+
IMPORTANT
m
ATTENTION
m
WARNING
Compact wall-mounted units KWL EC 170 W / W ET
1 .8 Application – Operation
KWL EC 170 W / W ET compact units with heat recovery, for the central ventilation of houses and apartments. Equip-
ped with easyControls, the innovative control concept for simpler network connection and web browser operation.
Equipped with a highly efficient plastic cross counter flow heat exchanger with a heat recovery efficiency of, see chart:
The standard equipment permits the installation and the application in frost-free rooms from +5 °C to +45 °C and
a relative humidity <90 %, non-condensing. In case of operation under difficult conditions, e.g. high humidity, longer
periods of standstill, strong contamination, excessive strain due to climatic and technical, electronic influences, consul-
tation and approval is required as the standard version is not suitable in this respect.
The ventilation unit must only be used according to its intended purpose!
1 .9

Function and mode of operation

The KWL compact unit has a plastic cross counter flow heat exchanger, in which the outside air (fresh air) crosses the
extracted building air, without coming into contact with each other. Through this procedure, the majority of the extracted
air heat is transferred to the outside air. The supply air is led by the duct system to the primary (supply air needing) areas.
The used air is extracted from the secondary areas (e.g. social rooms, toilets, showers etc.). It flows back through the duc-
ting to the ventilation unit, transfers the heat and is discharged by the extract air duct into the atmosphere.
The efficiency depends on several factors. These are, among other things, the humidity of the air and the temperature
difference of the outside air and extract air. The volume flow can be regulated via the local web server (LAN connec-
tion) which is included in the delivery, as well as the (optionally available) control elements KWL-BE or KWL-BEC.
Demand-based regulation can take place through the optional sensors KWL-VOC = air quality sensor, KWL-CO 2 =
carbon dioxide sensor or KWL-FTF = humidity-temperature sensor or through the integrated weekly timer.
An electrical pre-heater (KWL-EVH 170 W) is available as an accessory for this unit. This heats up the outside air and
prevents the freezing of the heat exchanger at very low external temperatures. The supply air temperature can also
be increased by activating a power-regulated, external electric or hot water auxiliary heater (accessories EHR-R...or
WHR...).
The summer bypass is the optimal solution for leading the colder outside air into the building in the warmer seasons.
The air is optimally cleaned by the integrated filter. This prevents contamination in the unit. A Coarse 65 % (G4) Filter is
installed as standard in the supply and extract air. An ePM 1 50 % (F7) filter can also be used in the supply air area after
the heat exchanger. However, the regular filter replacement and maintenance of the KWL unit are prerequisites for the
continuous proper functioning of the ventilation unit.
Replacement air filters can be ordered online at www.ersatzluftfilter.de.

1 .10 Performance data

In order to achieve the planned performance data (e.g. optimal volume flow, less noise and current consumption),
attention must be paid to the correctly planned and executed air distribution (outside air/supply air and extract air/
outgoing air). Furthermore, these must always be dimensioned accordingly.
Helios offers regular practical workshops on this topic; here you will find all the important details in a practical environ-
ment. The dates can be found on our website www.heliosventilatoren.de under training.
Deviating versions, unfavourable installation and operating conditions can lead to the reduction of output or an increa-
sed sound level. The figures for the air-side sound are recognised as A-weighted sound power level LWA (corresponds
to DIN 45635, pt.1). The figures in A-weighted sound pressure LPA are influenced by room and installation-specific
factors. Accordingly, there are deviations in the figures.

1 .11 Fireplaces

The relevant applicable rules for the joint operation of fireplaces, ventilation, extraction hoods (Federal Asso-
ciation of Chimney Sweeps (ZIV)) must be observed!
General building regulation requirements
The KWL units with heat recovery can only be installed and operated in rooms with other room air-dependent fireplaces
if the exhaust duct is monitored by special safety devices, which switch off the ventilation unit KWL when activated.
We recommend that you consult the responsible chimney sweep in order to accommodate your wishes before purcha-
sing an underpressure monitoring system for fireplaces.
Monitoring systems are always integrated in the unit supply cable! (see wiring diagram)
ATTENTION DANGER TO LIFE! The use of the external contact (function 1; enable/disable unit) of
the KWL-EM or the KWL-CO
not permissible .
/ KWL-VOC as a shutdown method for underpressure monitoring is
2
2