7
2.4.2. Exterior version
The VEX400 units are protected against spraying water IP24 excluding connections. Units intended for outside use are fitted with a roof. To protect the
internal compartments of the unit from rain, a rain hood (sold as option) must be installed on the air inlets and outlets if they have no duct fitted. We
also recommend installing, in outside version, shut-off dampers on the air inlet and outlet openings in order to isolate the unit.
Caution:
A roof installation must comply with the DTU 43.1, Chap. 5.4. The unit is larger with the hood and the roof! See Section 2.7.2 for the hood
installation and Section 3 for the dimensions.
2.5. Airflow direction
There is a right-hand and a left-hand version
2.5.1. Right-hand version
Fresh air
Discharge
Extraction
Air supply
Fresh airflow towards the right
2.5.2. Left-hand version
Fresh air
Discharge
Extraction
Air supply
Fresh airflow towards the left
2.6. Installation of the temperature probe (air supply sensor)
The air supply temperature probe is supplied connected to the electronic board, in stand-by in the side rail air intake side. It must be positioned in the
air supply duct. The probe is held along a metal rod passing through a cable gland PG 9, which is itself fixed to a metal bracket, ensuring that the duct
is leaktight. Two self-tapping screws are delivered with the unit to fix this plate.
Sonde Temp. Souf
flage /
Supply Temp. Sensor
