Veelgestelde vragen over ventilatie

For communication between the RF switches and the 225 Compact ventilation unit, it is necessary that the antenna at the bottom of the 225 Compact ventilation unit is folded out and that these controls are paired with the 225 Compact ventilation unit. See the manual for the pairing procedure.

There are several possibilities available to control the 225 Compact ventilation unit.

Wireless: RF 3-position switch, RH RF switch, CO2 RF switch, RF control display (max 20 in total), and Climate Control App (via Gateway).

Wired: Building management system via 0-10V input signal and Modbus connection.

You can order your filters directly from your installer or an authorized Vasco dealer.

The supply and exhaust ducts should be on average 3 metres apart so that you do not bring extracted air back inside. If each duct opens onto a different facade (around the corner), you can reduce this distance. This also applies to System C. The exhaust duct must also be on average 2 to 3 metres away from the window grilles. For System D, also respect the distance between the supply chimney and the gas flue pipe; this is specified under the term dilution factor.

With ventilation, we distinguish two types of consumption:

The electrical consumption of the fan(s) of the ventilation unit.

The consumption required to compensate for heat loss in the home by ventilating.

With System C, the supply of fresh air happens via grilles in walls or windows and the extraction in wet rooms via a fan. The only electrical cost with a System C is the consumption of the fan. A downside to System C is that outside air enters unheated in autumn and especially winter, and uncooled in summer. To compensate for this cooling in winter, the home must be heated more. In summer, the cooling system (if present) must run more intensively, resulting in a higher electricity bill.

With a System D, both the supply of fresh air and the extraction of used air are entirely mechanical. That means there are two fans, which indeed consume more than one fan. But this does not outweigh the great advantage of heat recovery. In a System D with heat recovery, the heat from the extracted indoor air is transferred to the drawn-in outdoor air. You only need to heat very minimally to compensate. In summer, the reverse happens: the warm incoming outdoor air is first cooled by the cooler indoor air.

Many users wish to use their ventilation system as air conditioning, but unfortunately, this is a misconception. Ventilation in itself is not made to cool, and physically coupling a cooling installation is not possible. This is because condensation can form on the outside of the air ducts, and the airflow achieved by a ventilation system is too low to generate sufficient cooling power.

We do want to emphasize that when a cooling system (air conditioning or heat pump) is installed separately, the ventilation System D (balanced ventilation) is the only option for heat/cold recovery. When using a cooling system, System D acts as cold recovery. This causes the cooling system to consume much less than a combination with System C.

What the system can do is prevent the indoor temperature from rising during warm periods through the automatic bypass. This will open if the indoor temperature is higher than the outdoor temperature. This way, the warm indoor air is replaced by the cooler outdoor air.

Transfer openings ensure the free flow of air from rooms where fresh air is supplied (living room, bedroom... in homes and offices, classrooms... in non-residential buildings) to rooms where polluted air is extracted (bathroom, kitchen, toilet, garage... in homes), possibly via transfer areas (hallway, stairwell...).

A transfer opening can be an opening in an interior wall or door, or even a gap under an interior door. In certain cases, the transfer opening is replaced by a large opening between two rooms (for example, an open kitchen). The transfer opening must be at least 70 cm².

With a ventilation System C, the supply of fresh outdoor air happens via grilles in windows or walls. In strong winds, the ventilation inside can be experienced as a draft. And in winter, cold to very cold outdoor air enters the living rooms.

With a ventilation System D with heat recovery, the supply of fresh indoor air happens entirely mechanically. Extraction of used indoor air and supply of fresh outdoor air happen automatically and are in balance. You experience no nuisance from cold air or a feeling of drafts.

That depends on the situation and the environment in which you live. We recommend checking the filters the first month after starting up the installation and cleaning them to remove any construction dust. After that, it is best to check the filters every 3 months and clean them with a vacuum cleaner. Always vacuum on the dirty side. Additionally, we recommend replacing the filters twice a year.

Mechanical ventilation works with fans that regulate the airflow in your home. Depending on the system, this happens in two ways:

System C: Fresh air enters via grilles in windows or walls. Fans actively remove the polluted air from wet rooms such as the kitchen, bathroom, and toilet.

System D (balanced ventilation): Fans ensure both the supply of fresh air and the extraction of polluted air. There is often a heat exchanger that recovers the heat from the extracted air to warm up the incoming air.

This gives you a continuous supply of fresh air, an efficient removal of moisture and odours, and in the case of balanced ventilation, lower energy consumption.