VEX330H Air handling unit

VEX330H

Air handling unit

One of the most compact air handling units with counter flow heat exchanger on the market. Optimised design in terms of temperature efficiency, airflow and energy consumption.
VEX330H
One of the most compact air handling units with counter flow heat exchanger on the market. Optimised design in terms of temperature efficiency, airflow and energy consumption. Despite being very compact in size, ease of servicing is a key feature.

The VEX330H is ideal for residential ventilation, where the air is separated via the ventilation system, removing the risk of odours and humidly being transferred.
VEX330H

Product advantages

  • Compact, high-performance unit
  • Same unit, Left/Right
  • EXact2, advanced control system
  • Water or electric heating coil
  • Can be ordered for outdoors installation
  • Low sound level

In principle, EXHAUSTO VEX units are designed for use in comfort ventilation - i.e. under ordinary operating conditions.

Where ventilation solutions are required for rooms with high air humidity - e.g. due to humidification, we recommend you make a test calculation with one of our calculation programs. If the calculation shows a risk of condensation after the heat exchanger, an assessment must be made whether the operating conditions can be changed, or whether the unit must be modified to allow condensate to drain off. This is particularly relevant for VEX100CF.

Contact EXHAUSTO for advice on this.

Current overload protection

Built-in

References Max. Total efficiency (A-D) (%) Efficiency level requirements ECO efficiency level during optimal operating point Overload protection
VEX330H1

60,1

62N (2015)

78,7N

Built-in

VEX330H2

60,1

62N (2015)

73,7N

Built-in

Conditions:

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

Regulation Control signal with control system Control signal with third party control system Fluid temperature (air) Ambient temperature range

Variable via motor control (MC)

Modbus

0-10 V DC

-40°C ....+40°C

-30°C ....+50°C

VEX330H
References Weight (kg) Weight for transport
VEX330H1

153

143 kg (without a removable panel)

VEX330H2

156

146 kg (without a removable panel)

References Minimum airflow Max. airflow ErP (m³/h) Max. airflow (m³/h)
VEX330H1

70

830

900

VEX330H2

100

1510

1555

References Frequency (Hz) Max. electrical output of unit (kW) Voltage (V) Maximum current - unit (A)
VEX330H1

50

0,6

1x230

3,1

VEX330H2

50

1,2

1x230

5,3

MECHANICAL PERFORMANCE:

According to DS/EN 1886 and certified by Eurovent:

  • Strength of the unit casing: D1 (M)
  • Leakage at -400 Pa negative pressure: L1 (M)
  • Leakage at +700 Pa positive pressure: L1 (M)
  • Filter bypass leakage: F9 at negative and positive pressure
  • Thermal transmission: T2 (M)
  • Thermal bridging factor: TB3

Cabinets are made from Aluzinc® AZ185 class C4 in accordance with EN/ISO12944-2 and insulated with 50 mm mineral wool. This results in low noise emissions to the surrounding environment/installation room.

The panel design minimises the formation of thermal bridges in the unit.

The motor sections are mounted in vibration dampers, which reduces noise in the ducts and eliminates the need to fit flexible connections between the unit and the duct system.

The motors are of type EC and are extremely efficient. They comply with the requirements of the Ecodesign Directive.

VEX300H is equipped with an optimised centrifugal fan impeller with backwards curved vanes. The impeller design delivers high output with low energy consumption.

The easily accessible connection box with built-in switch disconnector ensures easy access for connecting and adjusting.

Panel filters are easy to replace and can be ordered as Coarse 85% (M5) or ePM1 55% (F7) in acc. with EN779.

Filter size: 340 x 630 x 96 mm

The side panels on both sides of VEX330H models can be removed (easy access). This allows the unit to function as both a LEFT and RIGHT version.

The unit can also be ordered as an outdoor model. The outdoor unit has a fitted cover that protects it against wind and weather.

The VEX330H is designed with de-icing bypass. If there is a risk of icing, then a certain amount of outdoor air will bypass the heat exchanger and go directly to the after heating coil. This increases the demands on the heating coil’s output. However, it avoids a costly preheating coil. The drawing below is an example of a de-icing situation, where 20% of outdoor air is directed through the bypass damper.

The control system has temperature-controlled frost protection as standard. It is an inexpensive solution and provides sufficient frost-protection in some situations.

A temperature sensor is fitted inside the heat exchanger and if the temperature falls to a pre-set value, de-icing begins. This temperature level is factory set to 0 °C but it can also be changed to a new value via the control system.

Temperature-controlled frost protection triggers the de-icing process even if there is no ice in the heat exchanger.

The control system monitors the actual airflow and also the pressure drop across the heat exchanger. If ice forms in the heat exchanger, the pressure drop across the heat exchanger will increase and when it exceeds a pre-set value, de-icing begins.

Pressure-controlled frost protection only starts de-icing when ice has actually formed, regardless of whether there are sub-zero temperatures.

Products and accessories references

  • VEX330H1
    VEX330H1
  • VEX330H2
    VEX330H2

Documents

Showing 1 - y of document
  • VEX, Siphon - pressure side, installation guide
    Instructions
    641 KB
  • VEX, Siphon - suction side, installation guide
    633 KB
  • VEX, SiphonHE - frost protection, installation guide
    598 KB
  • VEX330H Bestillingsformular
    Teknisk og kommerciel dokumentation
    300 KB
  • VEX330H with EXact2, mechanical instruction
    Manuals
    2 MB
  • VEX330H with EXact2, electrical instruction
    Manuals
    3 MB
  • VEX330H-X without controls, electrical instruction
    Manuals
    906 KB
  • VEX330H without controls, mechanical instruction
    Manuals
    3 MB
  • EXact2 HMI2 for VEX300, instruction
    Manuals
    6 MB
  • EXact2 HMI2 for VEX300, menu guide
    Manuals
    1 MB
  • VEX330H ECOdesign declaration
    Certificates and Declarations
    345 KB
  • VEX330H - EC Declaration of Conformity
    Certificates and Declarations
    168 KB

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