3
Air Handling Units
Application, Operating Conditions and Construction
Manufacturer‘s Notification
AeroMaster air-handling units are manufactured in accor-
dance with valid Czech and European regulations and
technical standards. AeroMaster air-handling units must be
installed and used only in accordance with this documen-
tation. The installation and operating documentation must
be available for the operating and servicing staff, and it is
advisable to store this documentation close to the installed
air-handling unit.
Application and Operating Conditions
AeroMaster Cirrus air-handling units are designed for
comfortable air-handling and air-conditioning in an air flow
range corresponding to the air-handling unit’s cross-sec-
tion and required air flow velocity from 1.5-4 m/s at an air
pressure difference of the fan of up to 2500 Pa. The air-
-handling unit is designed as a modular system with a fra-
me and laminated construction which enables high flexibi
-
lity. Thus individual modification to customer requirements
is possible. Inner width (W), height (H) and length (L) are
multiples of the module (N × 306 mm) and create space for
the installation of built-in functional assemblies.
AeroMaster Cirrus air-handling units are intended for
installation on floors or substructures, and are delivered
with a rigid base frame mounted in the factory.
They are designed to transport air without solid, fibrous,
sticky, aggressive or explosive impurities. The transpor-
ted air must be free of corrosive chemicals or chemicals
aggressive to zinc and steel, respectively aluminium.
They are manufactured with the same construction for
inside as well as outdoor environments, including units
designed for rooms with greater requirements for cleanli-
ness. Air-handling units intended for outside environments
are completed with suitable accessories (roof, louvers,
etc.) ensuring correct and failure-free operation. With the-
se air-handling units, the correct selection, localization and
connection of the M&C components, including anti-freeze
protection, must be ensured.
AeroMaster Cirrus air-handling units can be used in
normal rooms (IEC 60364-5-51, resp. ČSN 332000-5-
51 ed.2, ČSN 33 2000-1 ed.2) and in rooms with exten
-
ded ambient temperature range from -30 °C to + 40 °C
without additional measures - applies to the standard
version. Custom-made units with decreased -40 °C to
+40 °C or increased -30 °C +50 °C temperature range
of transported air can be delivered.
When designing the air-handling assembly, it is
necessary to take into account the temperature and
humidity of the inlet and outlet air in relation to the
ambient temperature and humidity. It is especially
necessary to analyze the relation of the unit's casing
classification pursuant to EN 1886 and the risk of con
-
densation, respectively ice build-up.
The device can be used for outdoor installations if
equipped with a protecting roof; the device is water
spray proof (rain up to 60° vertical slant) while obser-
ving the Installation and Operating Instructions.
The fans are equipped with motors insulated with F
class insulation of the winding.
The unit's noise level does not exceed max. allowed
values as per Statutory Order No. 176/2008 Sb, Appen
-
dix No. 1, Article 1.7.4.2., Letter u).
Air-Handling Unit Construction
The air-handling unit is designed as a modular system
with a frame and laminated construction. The walls consist
of two layers of unified modular laminas attached to the
frame. The first layer of the upper, lower and back walls
has longitudinally-oriented laminas while the second la-
yer laminas are cross-oriented. The front wall fitted with
service panels has laminas oriented in the same direction
in both layers. The service parts (panels) are also of la-
minated construction. Each panel consists of the external
casing with integrated reinforcements.
The panels which are expected to enable occasional servi-
ce access to the internal built-in assemblies are provided
with locks and grab handles to make handling easier. The
panels used for regular servicing (replacement of filter
inserts, cleaning of built-in assemblies, etc) are provided
with hinges and locks.
All walls are of sandwich construction with a total insu-
lation thickness of 50 mm. They are provided with a quality
anti-corrosion surface finish. The connections between
walls, panels and supporting cross-members are sealed
with a seal with closed cell structure.
The seals used during the assembly of the air-handling
unit’s lamellar walls and casing have a closed cell structu-
re. The non-glued replaceable sealing of the service pa-
nels is fitted in to the groove on the inner side of the panel.
Internal casing: Standard version - galvanized sheet
steel, optionally painted sheet steel (polyester paint) or
stainless sheet steel
External casing: Standard version - galvanized sheet
steel, optionally painted sheet steel (polyester paint) or
stainless sheet steel
Frame profiles: Standard version - hot-dip galvanized
sheet steel, optionally painted sheet steel (polyester paint)
Insulation of the upper and side panels is made of 50
mm thick non-combustible mineral wool (Class A1 pur-
suant ČSN EN 13501-1).
Insulation of the lower panels is made of 50 mm thick
PUR foam boards (Class B2 pursuant DIN 4102).
The joints are sealed with silicone compound.
Air-Handling Unit Marking
The complete AeroMaster Cirrus air-handling unit is
divided into "structural" BLOCKS, respectively transport-
installation BLOCKS. Functionally, the block is defined by
the internal built-in assembly (assemblies) which is (are)
fitted into the block's casing, where the casing is created
with laminated walls, supporting cross-members and a
combination of service panels situated on the access side
of the unit.
The air-handling unit is then assembled from the trans-
port-installation blocks at the installation site. At the outlet,
the transport-installation blocks are fitted with an end panel
or a frame to be connected to the next block.
BLOCK is provided with a
BLOCK type (name) plate
indicating the following data:
Manufacturer's name (incl. logo) and address
Type, size and marking code of the BLOCK
BLOCK serial number
Order number (serial number)/year of production
Weight
