Roof fans

High-quality roof fans effectively remove dirty and used air from the building. The roof fans come in different sizes for different purposes and building sizes. Find the right product here.


What criteria should I use when selecting a VILPE roof fan for exhaust air ventilation?

The roof fan is selected based on the ventilation need of the building or property. The quick selection table for VILPE roof fans can be used to select a roof fan for an ordinary detached house. To select a suitable roof fan, the pressure caused by the duct system and the necessary air volumes must be known. When the operation point of the roof fan has been determined, the most suitable roof fan for the intended use is selected by examining roof fan performance value tables. A model that consumes the least energy and emits the least noise at the specific operation point is selected from the range of VILPE roof fans. An ECo roof fan must be selected for room ventilation, because only the ECo series of roof fans meets the requirements of ecological design regulations.

When are roof fans suitable for house ventilation?

Passive ventilation can be upgraded to mechanical ventilation using roof fans of the ECo series in combination with the ECo Ideal Wireless system. ECo Ideal is an automatic and demand-controlled roof fan control system. It can also be used for ventilation in recreational homes, warehouses and garages.

What kind of ventilation system should I choose for the house?

New buildings commonly use a mechanical ventilation system with heat recovery. When renovating older buildings, we recommend the VILPE ECo Ideal Wireless control system. Eco Ideal is an automatic steering system for the roof fan that adjusts the ventilation according to the indoor air quality, by bringing out excess moisture and carbon dioxide. In order for the ventilation system to be complete, proper ventilation also needs supply air to replace the bad air. This can be done with an intake vent, e.g., VILPE Wive. ECo Ideal is also suitable for ventilation in recreational homes, warehouses and garages.

Which VILPE roof fan can be used with a cooker hood?

VILPE E-series roof fans can be used with cooker hoods designed for external fans with AC-powered blower control capability. If the range hood is capable of controlling an EC-model roof fan (0–10V DC), VILPE ECo series roof fans should be used with the cooker hood. Be sure to check the duct size and control with the cooker hood manufacturer.  

How do I adjust the power of the VILPE radon fan?

The VILPE ECo 110 FLOW roof fan is controlled by an external controller. It is suitable for applications where separate alarm data is required. The rotational speed can also be controlled by the house automation system at a voltage of 0–10 V.

The VILPE ECo 110 roof fan is controlled by an internal potentiometer regulator, so there is no need for a separate control.  

It is important to remember that electrical installations may only be carried out by authorized companies.

Can I connect the VILPE ECo 110 radon fan or eco-sewer fan with an external controller?

The ECo110 FLOW product can be controlled with an external control. The VILPE ECo motor controller can be used for regulation.

Which controller can be used with VILPE E fans and with VILPE ECo fans?

For ventilation purposes, the appropriate control system must always be used. The VILPE ECo Ideal Wireless roof fan system is a wireless, demand-controlled ventilation control system.

For non-dwelling ventilation purposes, the VILPE ECo motor controller for both surface and flush mounting is a suitable choice. The range also includes a pressure controller to maintain the desired pressure difference in the duct or between different areas.

A thyristor or step transformer regulators intended for AC fans can also be used with VILPE E fans. Make sure that the controller’s power range corresponds to the motor power. VILPE motor controller models are available for both surface and flush mounting.

The roof fan can also be adjusted with a cooker hood. Check with the hood manufacturer for the correct type of roof fan. Learn about the VILPE roof fan controls here.

How and where are the low-current wires of the VILPE ECo roof fan attached?

The electrical specifications of VILPE ECo roof fans and further information on the roof fans and their performance values are available on our website, from the price list, and the VILPE Roof Fans and Exhaust Pipes brochure.

There are two cables in VILPE ECo fans. One cable is used to supply 230 V electricity to the roof fan, and the other provides a coupling for roof fan control. See the installation instructions for more information on couplings: Wiring diagrams for VILPE ECo roof fans (ECo 110 + ECo 190, ECo 220, ECo 250)

NOTE! Electrical installations may only be carried out by professional electricians.

How is the VILPE ECo roof fan connected to the building technology system (SAS), and what information is obtained about the roof fan?

VILPE ECo roof fans can be connected to the building technology system if the system has the capability to control rotation speed with 0–10 V DC voltage. An alarm can be provided using the VILPE ECo Monitor operation monitor. The operation monitor emits an alarm as output data if the rotation speed falls below 200 rpm.

The pulse data received from the VILPE ECo roof fan can also be connected to the building technology system, in which the case alarm limits can be integrated with system control. The pulse data is generated by an open collector. Max 47 V input voltage. These must be checked from the system supplier. There is one pulse per revolution from the roof fan. The alarm limit can be set at various values, such as 300 rpm.

NOTE! Electrical installations may only be carried out by professional electricians.

How are VILPE Eco fans connected?

Wiring diagram for VILPE ECo roof fans

VILPE ECo high-performance specifications, additional information on roof fans, and their performance are available on our website and in our pricelist.

NOTE! Electrical installations may only be carried out by professional electricians.

Why does ice accumulate in the roof fan and the exhaust pipe, with water dripping onto the stove?

Warm air normally rises via ducts and structures, and cold air moves downwards. When a cold surface and warm air come together, and the relative humidity is 100 per cent, a dew point is formed, causing water to drip from the ducts.

How to solve the problem:

  • Check that the ducts are properly insulated. Insulation thickness on ducts in cold space must comply with building regulations. The thickness of the rockwool insulation on the ducts must be at least 150 mm.
  • Check that ventilation in the apartment has been adjusted correctly. Usually, ventilation should be adjusted so that there is about 3–5 Pa under-pressure. If the problem cannot be eliminated by adjusting ventilation and insulating the ducts, the range hood should be fitted with a fully closing damper. This prevents humidity from rising in the duct and becoming condensed.

If the fan has frozen up and cannot rotate freely, the automatic thermal relay switches on to prevent the fan from breaking down. When the ice has melted, the thermal relay is reset, and the fan is again operable. The easiest way to defrost a frozen fan is to blow warm air into the duct – for example, with a hairdryer.

If the roof fan is switched off immediately after cooking, a large amount of steam and warm air will remain in the ducts. Water vapour condenses in the ducts and the fan motor, forming ice in cold weather. The next time the fan is used, the ice melts, and water drips from the ducts onto the stove. The fan should be kept running as long as possible after cooking so that the ducts have enough time to dry. The best way to prevent condensation is to keep the fan on constantly on low power.

What is the service life of VILPE roof fans?

The normal service life of VILPE roof fans is 15 to 20 years. The motors have a long service life, and they seldom break down prematurely.

The most common reason for reduced fan power is breakage of the capacitor. It is quite easy to change the capacitor, but it should be done by an electrician.

If increasing sound is heard from the rotor at higher rounds, there may be a bearing fault. A maintenance set is available for each fan model. The maintenance set includes the motor and the capacitor.