4.2.2 Requirements for outdoor installa-
tion
Installation location
For outdoor installation please note:
Do not use the air handling unit in potentially explo-
sive atmospheres.
The installation location has to be
–
free from conductive dust particles
–
free from strong electromagnetic fields
–
free from aggressive atmospheres
–
fitted with a functioning drainage system
The structure on which the air handling unit is to be
installed must be suitable for the weight and have a
level surface (see the order-specific data sheet for
the air handling unit).
There is sufficient clearance for installing, operating,
servicing, and repairing the AHU and all its parts.
The maintenance access has to be at least as deep
as the unit.
Make sure that the installation location meets local
regulations to prevent the fall of people, and of tools
and other objects.
Use suitable fall arrest equipment.
Prevent unauthorised individuals from accessing
AHU casing units.
Make sure that authorised individuals can access
AHU casing units safely.
Keep the structural properties in mind and make
sure the maximum roof load is not exceeded; do not
neglect the effects of weather on the unit (rain,
snow, wind, sun etc.).
Only a skilled qualified professional must connect
the air handling unit to an external switch cabinet
and prevent the cables from the effects of weather
(rain, snow, wind, sun etc.).
All operating fluid pipes and hoses and the AHU
components to which they are connected must be
frost-proof.
Do not use the air handling unit as a structural ele-
ment or as a roof for a building.
Foundation of the outdoor installation area
The information regarding the foundation of the
For roof installation, check the load capacity and
support structure of the roof; consult a structural
engineer if necessary.
The entire air handling unit must be supported by a
continuous steel structure.
The steel girders must be designed for a maximum
deflection of L/500 under load (L = girder length). A
maximum deflection of 10 mm under load must not
be exceeded.
Waterproof the edge of the roof under the air han-
dling unit and also any connections penetrating the
roof.
Insulate the plinth structure (by others) to prevent
condensation.
In areas with heavy snowfall, choose an installation
location where snow will not affect the operation of
the air handling unit. Make sure that the support
structure is high enough.
Escaping water
NOTICE!
Risk of damage to property from escaping water!
If the water system is not tight, water may escape
and cause considerable damage to property.
–
Ensure that liquids are channelled away and to a
collection device.
4.3 Preventing vibration and structure-
borne noise
If the air handling unit is equipped with an anti-vibration
frame (Vibration Baseframe - AVBF optional), no special
measures are required for insulation of structure-borne
noise.
In the case of air handling units without anti-vibration
frames, underlays for insulation of vibration and struc-
ture-borne noise can be used to reduce vibration trans-
mission to the support structure:
For installation on level ground with no special
requirements regarding insulation of structure-borne
noise, we recommend decoupling the foundation
from the air handling unit, for example using rubber
or elastomer sheets.
For noise insulation, compare the requirement to the
sound power level of the air handling unit (see
order-specific data sheet for the air handling unit)
and have the necessary measures determined by
an acoustics engineer.
NOTICE!
Risk of damage to the AHU
Anti-vibration elements or a noise insulating layer
must not affect the structural safety of the AHU.
Ensure the following:
–
Use a sufficient number of anti-vibration ele-
ments and noise insulating layers and place
them correctly as otherwise the frame may sag.
–
Keep in mind that the various AHU casing units
differ in weight; this must not lead to any height
differences in the overall unit.
We recommend you to have noise insulating layers
(including material and layout plan) selected and
sized by an expert company.
Setup and assembly
Preventing vibration and structure-borne noise
Air handling unit X-CUBE X2 / X-CUBE X2 compact
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