Technical data

Technical data, VEX340H

Unit data:

Min. airflow 400 m³/h
Max. airflow 2,450 m³/h
Power consumption 1.8 kW
Power supply 1 x 230 V + N + PE ∼ 50 Hz
Max. phase current 12.5 A (Power consumption is not sinusoidal)
Operational-ready unit weight 450 kg
Weight for internal transport 284 kg (excl. doors, fan units, bypass section, counter flow heat exchangers and filters)

Ambient temperature (operating)

At temperatures below -25˚C (with outdoor installation), use of a thermostatically controlled heater in automated control box is recommended.

-30°C to +50°C 
Motor and motor control (MC) data
Motor type EC motor
Motor class
in accordance with IEC TS 60034-30-2
IE5 (Ultra Premium Efficiency)
Voltage input 1 x 230 V
Current overload protection Built-in
Regulation Variable via motor control (MC)
Control signal with control system Modbus
Control signal with third party control system 0–10 VDC
Fluid temperature (air) -40°C to +40°C

Fan data

Max. total efficiency (A-D) 58.1%
ECO measurement set-up (A-D) A
Efficiency level requirements 62N (2015)
ECO efficiency level during optimal operating point 76,2N


Motor data (optimal operating point)

EC motor With motor controller
Power consumption 0.67 kW
Airflow 2286 m3/h
Total pressure 617 Pa
RPM during optimal operating point  2886



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

Temperature efficiency

Temperature efficiency, VEX340H

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 calculation software, EXselect.

VEX340 temperaturvirkningsgrad
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.

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
Dimensional drawings

Dimensional drawings, VEX340H


1) Allow a distance for service in front of the unit that is equivalent to the unit depth
2( Allow min. 200 mm free height for service




1) Allow a distance for service in front of the unit that is equivalent to the unit depth
2( Allow min. 200 mm free height for service


VEX340-OD for outdoor installation (accessory)

With outdoor installation, the unit must be secured to the building at the points shown in the instructions.

VEX340 right målskitse udendørs montage

SPLIT unit

SPLIT unit, VEX340H

If the VEX340 needs to be transported through passages that would normally be too small for it, if it can be ordered as a SPLIT model.

As a SPLIT model, the unit is delivered assembled but not sealed, so that it can be split into smaller sections on the site and transported in smaller sections to the location where it is to be installed.

This work must be carried out by a certified EXHAUSTO service technician.


VEX340 split


Cooling and heating coils

Cooling and heating coils, VEX340

The following cooling and heating coils are suitable for VEX340

Type Model
HE electric heating coil  HE400
HW water heating coil HW400
CW cooling coil (water)  CW400I
DX cooling/heating coil DX400U

Add all about the product series VEX340H


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Vex overview

VEX Summary

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

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