Vallox Exxeo 4100 roof fan

The elegantly designed Vallox Exxeo roof fans with a low sound level and a wide range of sizes and control options are an excellent choice for any site.

The weatherproof Vallox Exxeo can be installed in demanding climate conditions, as the zinc-magnesium coated steel damper (environmental impact category C4; C5 when painted) protects the unit efficiently against corrosion. Thanks to the carefully designed structure, rain water is led to the side of the unit, so that water cannot flow into the duct. The perforated roof panel also protects the duct from leaves and other loose rubbish.

The sound level of the roof fans is considerably lower than before, thanks to the sound-dampening elements in the side panels. The roof fan control equipment is fully integrated inside the roof fan behind the safety door. Maintenance is made easier by the tilting function, which enables turning the roof fan to the side during maintenance of the unit and the duct system. The safety switch delivered with the product is installed and cabled in the factory, and the tilting part is sealed.

The roof fan may be mounted on top of an outlet built on site or using the factory-made Vallox Exxeo roof penetration. With lifting lugs, the roof fan can be lifted onto the roof easily and safely. When replacing an old roof fan, the mounting frame (standard delivery) makes installing easier. The roof fan may also be painted at the factory with a tone included in the RAL colour chart for a perfect match with the colour of the roof, for instance.

The suitable size of the roof fan is chosen from seven different size options in accordance with the required air volumes. The air flow of the largest roof fan, Vallox Exxeo 4100 is 4,100 litres, respectively, with a pressure loss of 150 Pa.

The roof fan range consists of three models with different control methods: the versatile basic model Vallox Exxeo; the Vallox Exxeo DPC (Differential Pressure Control) model equipped with an integrated differential pressure transmitter; and the Vallox Exxeo DS (Dual Speed) model, designed for renovation projects.

Both the basic model and the DPC model, which is controlled with constant pressure or air volume, feature a display with easy-to-use selection buttons below it. With the control panel of these units, the fan can be set at a constant speed, it can be adjusted with 0-10 V control voltage, or 2-speed control (Low/High) can be used. The control panel can also be connected to a Modbus bus. In addition, the automation substation receives the on/off status and alarm information directly.

The basic model can be equipped with an external temperature sensor, so that the fan speed of the roof fan can be decreased as necessary in winter when the outdoor temperature falls. The DPC model can be mounted with two temperature sensors: one for outdoor air compensation and one for density adjustment of the duct air temperature.

Vallox Exxeo DS is a 2-speed model for renovation projects to replace an old 2-speed roof fan. The cable from the old distribution board is connected to the safety switch for speed control. There is no need to do anything to the electrical cabling during installation; all of the adjustments for different fan speeds are made within the roof fan. NOTE: The Vallox Exxeo DS roof fan cannot replace a three-phase roof fan controlled by a frequency converter.