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Modular air handling unit suitable for bespoke applicationsKA Air Handling Units
Systemair KA units represent a modern modular air handling unit solution, designed for maximum flexibility and efficiency. Each individual module is carefully engineered and optimized to ensure reliable operation, superior quality, and outstanding energy efficiency. The units deliver Eurovent-certified performance.
Modular Design
Standard or Hygienic Execution
Indoor or Outdoor Execution
Various Application
Fully Automatic Operation
Integrated Controls
Completely Modular
Systemair KA units are completely modular air handling units, with 46 standard sizes and with additional 14 sizes for larger units.
Flexible Application
The unit is available in several executions including standard, hygienic and corrosion-resistant.
Indoor/Outdoor Installation
Systemair KA units are suitable for indoor and outdoor installations with a fully factory-integrated control system.
Certified Performance
Calculated and measured performance certified by Eurovent. Hygienic units are certified by Hygiene-Institut des Ruhrgebiets, Gelsenkirchen.
Confirmed Quality
Maximum flexibility for highest efficiency
The units are always produced according to the Ecodesign Directive, Machinery Directive, Low Voltage Directive, EMC Directive and other directives covering functional elements.
Essential requirements, stated in the standards EN 1886, EN 13053 and EN 16798-3, have been accounted for.
Mechanical properties in accordance with EN 1886:
Thermal transmittance class T2
Thermal bridging class TB2 / TB3
Mechanical strength casing class D1
Casing air leakage class L1 / L2
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Doors and removable panels
Doors with hinges and removable panels are available to access the interior of the air handling unit.
Base frame
The galvanized steel base frame protects the lower section of the air handling unit against corrosion and damage, ensures structural strength and rigidity, and enables the unit transport and assembly on the building. The following base frame versions are possible:
125 mm base frame (no feet),
250 mm base frame (no feet),
125 mm base frame + 110~175 mm adjustable feet.
The base frame comes with lifting brackets for easier lifting and installation.
125 mm intermediate base frame between lower and upper part in two stage design for bigger sizes - available as an option
Handles and hinges
Strong and robust hinges and handles increase the lifetime of your unit casing, increase security with regard to the unit’s moving parts and increase casing airtightness.
Panels
Double-shell insulated panels come with an interrupted thermal bridge. The panels are bolted onto the frame from the outside.
Insulation:
Material type: rockwool
Insulation thickness: 50 mm
Insulation density: 100 kg/m3
Non-combustible, class A1 according to EN 13501-1
Possible materials for internal panel jacket, external panel jacket and internal built-in elements:
ZnAlMg coated steel,
galvanized prepainted steel sheet RAL 9006,
stainless steel sheet AISI 304 (material No. 1.4301),
Stainless steel sheet AISI 316L (material No. 1.4404).
Frame profiles and corners
The aluminium profile frame (AlMgSi) is made of hollowed aluminium sections (EN AW-6060) and rounded nylon corners (PA6+GF20%).
Possible versions of aluminium sections:
with an interrupted thermal bridge,
painted aluminium RAL9006,
anodized aluminium.
Joints and sealing tapes
Self-adhesive sealing tape is used for joints between the fixed non-removable panels and the frame.
Self-adhesive or foamed sealing tape on doors, depending on standard or hygienic execution.
All sealing tapes and the poured PU sealing compound have a closed-cell structure and are resistant to molds and other microorganisms.
Depending on the purpose of use and the requirements of the client, the following sealing options are available:
sealant is applied to the bottom openings
of internal casing (standard)
sealant is applied to all fixed panel
openings of internal casing (hygienic)
sealant is applied to all fixed panel
openings of external casing (outdoor)
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KA - Standard
For basic comfort ventilation demands
The standard version air handling units are made in accordance with the general technical, safety, hygienic and medical requirements which are laid down by the EU and domestic rules, regulations and standards.
Units are especially designed for ventilation of residential and educational buildings, business premises, shopping centers, industrial facilities, etc.
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KA - Hygienik
For higher hygienic ventilation demands
Next to requirements for a standard version, additional requirements stated in the standards and guidelines for medical facilities have been taken into account.
The air handling units in the hygienic version are certified by Hygiene-Institut des Ruhrgebiets, Gelsenkirchen in accordance with the following standards:
DIN 1946-4, VDI 6022-1, ÖNORM H6021, ÖNORM H6020, VDI 3803-1, SWKI VA104-01 in SWKI VA105-01.
Construction
KA unit casing consists of a mounting frame, panels and a base frame. The width and height values are dependent on the required airflow, geometry and type of unit required. The length of the unit is dependent on built-in functional elements, the purpose of use, installation type, the position of the intake and the exhaust section. The casing interior, and exposed integrated elements have a smooth edge finish or rounded edges.
Control
KA control system allows easy adjustment of the working parameters either via a hand-held terminal or a building management system, which allows the parameters to be set via a computer or smartphone.
Selection
Quick selection and thermodynamic calculation of the unit can be made in airCalc++.
By using this application useful information about the unit can be provided such as:
• technical data for all modules
• heat recovery and coil calculations
• energy consumption
• acoustics data
• detailed technical drawings, dimensions and weights
• Mollier diagram