Technical data


Unit data
Min. airflow 120 m³/h
Max. airflow 680 m³/h
Absorbed power 0.6 kW
Power supply 1 x 230 V + N + PE ∼50 Hz
Max. phase current 3.1 A
Operational-ready unit weight 128 kg
Fluid temperature (air) -20°C to +35°C
Ambient temperature (operating) -20°C to +35°C


Fan data  
Max. total efficiency (A-D) 60.1 %
ECO measurement set-up (A-D) A
Efficiency level requirements 62N (2015)
ECO efficiency level during optimal operating point 78.7N
Motor data (optimal operating point)
EC motor With motor controller
Absorbed power 0.17 kW
Airflow 1,005 m3/h
Total pressure 322 Pa
RPM during optimal operating point 2,555



- Density = 1.2 kg/m3
- Pressure ratio < 1,11
- other points in acc. with EC327/2011 (see product instructions)

Capacity curves



VEX320C1 kapacitetskurve


Capacity curve with Coarse 85% filters (M5)
SFP curve
Operating curves
A: Pressure loss supplement with ePM1 55% filter (F7)
B: Pressure loss supplement for heating/cooling coil


To calculate capacity data use the product selection tools Quickselect and EXselect.

Total energy consumption is divided equally between the extraction and supply air fans.

Absorbed power with VEX: P1(W) = SFP (J/m3) x qv (m3/s).

Temperature efficiency



stiplet streg
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/28 RH
Outdoor air = 5°C/50 RH
Balance between supply air/extract air  = 0,8
fed streg Efficiency without condensation in acc. with EN308:
Extract air = 25°C/28 RH
Outdoor air = 5°C/50 RH
Balance between supply air/extract air = 1,0


The temperature efficiency of the VEX units is 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


VEX320C-1 LWA1 - Suction side

VEX320C1 lydkurve sugeside


VEX320C-1 LWA2 - Pressure side

VEX320C1 lydkurve trykside

VEX320C-1 LWA3 - Surroundings

VEX320C1 lydkurve omgivelser

Sound output level
Suction side (outdoor air/extract air):
LW1 = LWA1 + KW
LWA1 read

Sound output level
Pressure side (supply air/exhaust air):
LW2 = LWA2 + KW
LWA2 read

Sound output level
LW3 = LWA3 + KW
LWA3 read

Sound output level at 1 m distance

Contact EXHAUSTO for specific calculation.


Hz Ranges 63 125 250 500 1K 2K 4K 8K
LWA1 I 11 5 7 -6 -15 -20 -34 -39
II 14 13 4 -6 -15 -22 -34 -31
LW2 I 3 0 4 -4 -8 -8 -20 -22
II 8 9 0 -3 -6 -9 -26 -34
LW3 I 3 7 7 -6 -12 -15 -24 -29
II 3 7 8 -9 -14 -18 -29 -35

Dimensional drawings



The VEX320 Ceiling with hinged or sliding door is available as a LEFT or RIGHT model.
The drawings below show the solution with a hinged door system.







VEX320C accessories - heating coils

Space demand

Cooling and heating coils

Cooling and heating coils, VEX320-330

The following cooling and heating coils are suitable for VEX320-330

Type Model
HE electric heating coil  HE315 - 2 sizes 3.9 kW and 7.8 kW
HW water heating coil  HW315S
DX cooling/heating coil

DX315S (for VEX320 and VEX330C1/330H1)
DX315M (for VEX330C2/330H2)

Add all about the product series VEX320C1


Get free advice on ventilation products and system solutions

Export Requests:
Odensevej 76
DK 5550 Langeskov

Tel +45 6566 1236

Calculation programs

Use EXHAUSTO's free calculation programs for calculating ventilation plant and system solutions

Go to Calculation Programs
Vex overview

VEX Summary

Get a quick overview of our entire range of compact VEX air handling units with heat recovery.

View the VEX summary here