Assembly; Unit Insulation; Installation - Helios KWL EC 800 S Pro Montage- Und Betriebsvorschrift

Installation and Operating Instructions
EN
CHAPTER 2

INSTALLATION

m
ATTENTION
m
WARNING
Central Ventilation Units KWL EC.. S Pro/WW
2.0

Assembly

The central ventilation units KWL EC.. S Pro/WW must be mounted in a vertical position. Due to operating noises which
change according to system pressure, it is recommended to install the KWL unit in the washing room, utility rooms or
storerooms. Ensure that there is a waste water connection in the installation area. Please consider the "condensation
outlet" information in section 2.3! Assembly should take place in such a way to enable preferably short ventilation ducts
and their trouble-free connection to the unit. Tight bends can lead to increased pressure loss and flow noise. The unit
can be turned 180° for optimal installation, so that the outside/outgoing air and extract/supply air inlets and outlets can
be on the left or right side. There is no need for bends and long stretches of pipeline due to these features. They reduce
losses and increase the degree of efficiency of the system.
When planning and installing, ensure that at least one side of the unit (operator side) is freely accessible for inspection,
maintenance and installation work, cleaning or dismantling, as the front doors can be removed on both sides. The
minimum maintenance distance should not fall below 700 mm (see Fig.1).
It must be ensured that the condensation drain is connected to the facility drainage system without any problems.
It must be ensured that the unit is installed in a perpendicular position (absolutely necessary for proper con-
densation drainage, see also section 2.3).
Important notes:
1. The ventilation ducts must not become kinked.
2. The connections to the connection valves must be firm and tight.
3. The terminal box is connected to the top of the casing and must be easily accessible for maintenance and installa-
tion work.
4. If an external heater battery is connected, there must be at least 1 m piping before and after the heater, which must
be made of non-flammable material (see functional diagram section 3.1).
5. The heater must be installed in such a way that the electrical box is easily accessible.
6. In order to prevents sound transmission, appropriate acoustic decoupling must be provided on site depending on
the building material.
7. The controller must be removed from the unit before installation.
8. The assembly of the KWL compact unit must only take place in rooms that are free of frost, as there is a
danger of freezing. The room temperature must not fall below +5 °C!
2.1

Unit insulation

If installed in heated rooms and higher humidity, condensation can occur on the outside of the unit in the outside and
outgoing air area. In this case, water-vapour-tight insulation is to be installed on the surface in this area. Furthermore
the outside and outgoing air ductwork should be insulated sufficiently.
If installed in unheated areas (e.g. frost-protected attic), sufficient insulation must be installed on the outside of the unit.
Otherwise, condensate formation could occur on the casing sides. Frost-proof condensate drainage must be installed,
perhaps with a heater.
2.2 Installation
Both bases are provided with drill holes for the floor mounting of the KWL EC units (see Fig.2 and dimensions on
page 24). Vibration dampers must be mounted by the customer for the final mounting of the unit in order to avoid the
transmission of vibrations.
Fig.1
Revision possible from
both sides. Min. main-
tenance distance:
Type 800 S = 700 mm
Type 1200 S = 800 mm
Type 1800 S = 850 mm
Type 2600 S = 1000 mm
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Fig.2
Anti-vibration mount
(on site)