KA - Modular air handling unit

Systemair KA units are designed as a modular air handling units from as small as 1.000 m³/h up to 100.000 m³/h. 46 standard sizes with additional 14 sizes for larger units. Special requests are always welcome for discussion. Available in several executions such as standard, hygienic and corrosion resistant for indoor and outdoor installation with fully factory integrated control system.

 

Eurovent certified KA units are available in different versions and meet both comfort requirements as well as the most demanding ventilation needs.

The hygienic units are TÜV NORD certified.

Design & Modul combination

Some installation requirements may represent a major challenge for the AHUs to fit perfectly. KA units can be modified to fit into almost any space.

• Single module design (supply or extract only)
• In-line module design,
• Side by side module design,
• Double-stage module design, 
• Stacked module design, 
• Double stage module design.

 Casing

The casing consists of a mounting frame, panels and a base frame. The height and width values depend on the required air flow, type of unit and geometry required. The length depends on the: built-in functional elements, purpose of use, installation type, position of the intake and exhaust section and any special customer requirements. The casing interior is smooth, all exposed interior integrated elements have a smooth edge finish or rounded edges.

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 L2

 Components

KA units are equipped with advanced and factory tested components such as fans (plug fans with EC or AC motors), heat exchangers (plate heat exchangers in cross and counter flow version, rotary in condensation, sorption and enthalpy versions, run-around coil), heating coils (water, electric, indirect gas), cooling coils (water, evaporative - DX), filters (from Coarse 65% (G4) up to ePM1 85% (F9) according to EN ISO 16890), protection equipment, control system, etc.. They can be modified for the higher hygiene requirements in certified hygienic execution or outdoor execution, where units can be exposed to the external weather conditions. All components and body design can be modified in airCalc++ selection software, where all calculations can be performed in accordance with the latest ERP 2018 directive.

 Control system

The desire of every user is a fully automatic operation of the air handling unit according to their needs. 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.

Components, such as electric cabinet, control and measuring devices (sensors, motor drives, differential pressure switches, thermostats, etc.), remote control management, WEB server, etc., provide full functionality of the KA air handling units.

• Fan speed control,
• automatic by-pass damper and rotary heat exchanger control (cold and heat recovery),
• heating and cooling coil pump and valves control,
• outdoor air and exhaust air damper control,
• mixing chamber control,
• humidification (humidification level) or dehumidification system control,
• alarming of measured parameters (temperature, humidity, pressure) with alarm limits management,
• weekly operating schedule (the intensity of ventilation, supply air temperature and humidity),
• WEB server and ethernet or. Modbus interface for remote access or connection to the BacNet or Cloud as standard,
• night cooling,
• custom control modification on request.

Selection tool

Quick selection and thermodynamic calculation of the unit can be made in airCalc++. By using this application we can provide useful information about the unit such as:

• technical data for all modules,
• heat recovery and coil calculations,
• energy consumption,
• acoustics information,
• detailed technical drawings, dimensions and weights,
• Mollier diagram,
• prices.

The air you breathe is our responsibility

No matter if the option you choose is standard, hygienic, corrosion resistant or totally custom-made.