Technical data


Unit data:
Min. airflow at 200 Pa 101 m³/h
Max. airflow at 200 Pa
760 m³/h
Absorbed power 560 W
Power supply 1x230 V + N + PE 50 Hz
Max. phase current

4.2 A

Operational-ready unit weight 164 kg
Fluid temperature (air) -20°C ....+35°C
Temperature, surroundings (operation) -25°C ....+50°C
Temperature, surroundings (transport and storage) -40°C ....+60°C
Filter selection:

ePM10 50% (M5)
ePM1 50% (F7)
ePM1 80% (F9) (duct-mounted filter box)

Standard filters:
Filter, supply air 
Filter, extract air


ePM1 50% (F7)
ePM10 50% (M5)

Cabinet data:

Corrosion class
Insulation class:
Cold bridge class
Density at 700 Pa overpressure:
Density at -400 Pa negative pressure: 

T3 (M)
TB3 (M)

ECO Design Directive data:

Fan data

Max. total efficiency (A-D) 61.70
ECO measurement set-up (A-D) A
Efficiency requirements 62N (2015)
ECO efficiency level during optimal operating point 82.7N

Motor data (optimal operating point)

EC motor With motor controller (VSD)
Absorbed power 0.16 kW
Airflow 705 m³/h
Total pressure 458 Pa
RPM during optimal operating point 2.865

- Density = 1.2 kg/m³
- Pressure ratio < 1.11
- Other points in acc. with EC327/2011 (see product instructions)

Dimensional drawings

CX3020, dimensional drawings 

Dimensional drawing, CX3020 Left (dimensions in mm) 



Dimensional drawing, CX3020 Right (dimensions in mm) 

CX3020R Dimensions

Temperature efficiency

Temperature efficiency, CX3020

The temperature efficiency and, to a lesser extent, the SFP/SEL values for a specific air handling unit are closely connected to the heat exchanger itself and depend upon the manufacturer. As suppliers can change from time to time, small changes in the technical data can occur, which is why it is always recommended that you perform a calculation for the particular project using our EXselectPRO calculation software.

CX3020- temperature efficiency
The curve is intended as a guideline, and it is recommended that a calculation be performed using the calculation software EXselectPRO for the individual project

dashed line

Efficiency with condensation:
Extract air = 20 °C/55 % RH
Outdoor air = -10 °C/50 % RH
Balance between supply air/extract air = 1.0


Efficiency without condensation with imbalance:
Extract air = 25 °C/30 % RH
Outdoor air = 5 °C/50 % RH
Balance between supply air/extract air = 0.8
bold line
Efficiency without condensation in acc. with EN308:
Extract air = 25 °C/30 % RH
Outdoor air = 5 °C/50 % RH
Balance between supply air/extract air = 1.0


The temperature efficiency of the CX air handling units are shown at different airflow ratios, calculated as:
t2.1 = Temperature of outdoor air (fresh air)
t2.2 = Temperature of supply air
t1.1 = Temperature of extract air
Sound data

Sound data, CX3020

SOUND EFFECT LEVEL at airflow 760 m³/h and 200 Pa external pressure


To duct, outdoor air  56
To duct, supply air 75
To duct, extract air 57
To duct, exhaust air 75
For surroundings 45

For precise sound data, please refer to our EXselectPRO product selection software.

Technical data for cooling and heating coils

Technical data of cooling and heating coils for CX3020

Integral water heating coil (HW)

Power rating 5.38 kW
Number of pipe rows  qty. 2
Number of circuits  qty. 1
 Face area (H x W)  870 x 95 mm
Connection dimension  DN15 (½")
Fin spacing  2.5 mm
Weight (without fluid) 6.7 kg
Water content 0.7 l

Duct-mounted preheating coil (PHE)

Power rating 5.0 kW 
Minimum airflow 505 m³/h 
Steps  1 step
Controller ON/OFF
Weight  30 kg

Duct-mounted heating coil (AHE)

Power rating 5.0 kW 
Minimum airflow 505 m³/h 
Steps  1 step
Controller 0-10 V
Weight  31 kg

Integrated cooling/heating coil (CCW)

Power rating 2.33 kW
Number of pipe rows  3 items
Number of circuits  qty. 2
Face area (H x W)  325 x 254 mm
Connection dimension  DN15 (½")
Fin spacing  2.5 mm
Weight (without fluid) 6.6 kg
Water content 1.2 l

Add all about the product series CX3020


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