Due to stricter building regulations, e.g. the energy saving ordinance (EnEV), new-builds are becoming more or less hermetically sealed buildings without natural air exchange to the outside. However, everyday activities, such as cooking, washing, or showering, as well as the air breathed by the residents, increase the humidity in the rooms. Without sufficient ventilation, the health risks to people and to the building arising from mould forming are increased. To ensure the minimum hygienic air exchange, it would be necessary to air throughout for approx. 10 minutes every two hours. How can this be achieved in reality?
This is where controlled domestic ventilation solves the problem. Domestic ventilation ensures you have fresh air and great thermal comfort. The Kermi x-well domestic ventilation systems are available as central or decentralised systems – for renovations in existing buildings as well as for new-builds.
Systems for domestic ventilation are standard today for all modern new-builds. Kermi x-well means you are always right up to date – both technically and with regard to the most recent building and energy regulations.
x-well domestic ventilation systems consume very little energy while working thanks to the high heat distribution. So in contrast to window airing, ventilation which is independent of the user is ensured, without heat being lost unnecessarily. This saves fuel and therefore hard cash.
The new Kermi x-well design air vents offer harmonious solutions for various installation situations in both suspended ceilings and also in dry construction walls. As flow-optimised source air vents, they contribute to a comfortable ventilation of the rooms.
With demand-led control, the air quantity is adjusted to current demand. (depending on the ventilation units' options characteristics).
|Product description||Floor space||Heat distribution||Acoustic power level||Energy efficiency class|
|x-well S series|
|x-well living space ventilation unit S180 / S180 E||up to approx. 125 m2||92.1 % / 88.6 %||39 dB(A)||A+ / A|
|x-well living space ventilation unit S280 / S280 E||up to approx. 175 m2||92.4 % / 84.8 %||43 dB(A)||A+ / A|
|x-well living space ventilation unit S370 / S370 E||up to approx. 240 m2||92.5 % / 82.7 %||46 dB(A)||A+ / A|
|x-well living space ventilation unit S460 / S460 E||up to approx. 350 m2||88.6 % / 81.5 %||48 dB(A)||A / A|
|x-well F series|
|x-well F130 living space ventilation unit||up to approx. 90 m2||88.0 %||37.0 dB(A)||A|
|x-well living space ventilation unit F170 / F170 E||up to approx. 120 m2||92.1 % / 81.9 %||45 dB(A)||A+ / A|
All technical data for the respective x-well domestic ventilation units
The compact ventilation units in the Kermi x-well® S series with heat recovery offer comfortable and controlled living space ventilation. The volume flows can be controlled as required via the relative humidity of the exhaust air . The units (type dependent) have a humidity sensor integrated in the exhaust air . With this sensor, it is possible to control the volume flows according to demand through the relative humidity. The countercurrent heat exchanger made of polystyrene used for heat recovery is proving to be particularly efficient. In contrast to that, the integrated summer bypass provides support in the summer to ensure that no warm air gets inside the building. The white powder-coated (RAL 9003) housings made of stainless steel are heat insulated and soundproof. The removable front part provides easy access for service and maintenance work or for replacing filter cartridges.
Using a flat ventilation unit as an example, the S280, shows how it is possible to install the unit as well as the main duct system in the suspended ceiling. Here, manifolds/collectors and the ventilation ducts are encased in the bare concrete ceiling.
When retrospectively installing an x-well domestic ventilation system, it makes sense to integrate it into the floor construction. Here, the ventilation ducts are laid in the insulation layer. Ideal for renovation situations.
If the controlled domestic ventilation is used over several storeys, then the ventilation unit is connected to the manifold/collector via silencers and main duct pipes. There are three different options for integrating the ventilation ducts: in the suspended ceiling, in the bare concrete ceiling, or in the bare concrete ceiling.
The x-well F series is the controlled domestic ventilation for upgrading. Thanks to the versatile installation options and due to its shallow construction depth, it is ideal for renovation and can easily be installed in drywalls and suspended ceilings.
The Kermi x-well® F series with heat recovery provides as compact ventilation units comfortable and controlled living space ventilation. The volume flows can be controlled as required via the relative humidity of the exhaust air . The units have a humidity sensor integrated in the exhaust air . With this sensor, it is possible to control the volume flows according to demand through the relative humidity. The countercurrent heat exchanger made of polystyrene used for heat recovery is proving to be particularly efficient. The white powder-coated (RAL 9003) housing made of sheet steel is heat insulated and soundproof. The removable front part provides easy access for service and maintenance work or for replacing filter cartridges.
Installation situation x-well F130 - The low installation depth is suitable for installation in wall-mounted installations of modern bathrooms.
x-well S170 / S170 E ventilation unit (enthalpy heat exchanger for moisture recovery)
Installation situation x-well F170 - The versatile mounting options are perfect for installation in suspended ceilings.
Using a flat ventilation unit as an example, the F170, shows how it is possible to install the unit as well as the main duct system in the suspended ceiling. Here, manifolds/collectors and the ventilation ducts are encased in the bare concrete ceiling.
Integration in a suspended ceiling could be an option when fitting retrospectively, e.g. while renovating, if the ceilings in the rooms are high enough. For example, with manifolds/collectors which can be installed hanging from the ceiling, round or flat ventilation ducts are connected.
Control element for all central domestic ventilation units. The control element is included on all S units and F170, F170 E. It can be ordered along with the F130 as an option.
It is operated using a simple menu with easy to understand pictograms and language neutrality in the user menu. It is also possible to mount the control element on a wall as a surface-mounted installation.
The Kermi x-well design air vents for central domestic ventilation are aesthetic solutions for various installation situations: They are suitable for both installation in a suspended ceiling and also in dry construction walls. As flow-optimised source air vents, they contribute to a comfortable ventilation of the rooms. A filter insert is available as an option as well as a throttle to balance the air flows.
Unlike the air, the ground has relatively constant temperatures. That way, the brine/air geothermal heat exchanger can preheat the outside air at low outside temperatures in the winter and keeps it frost-free. As a result, optimum operation for the ventilation unit can be assured even at temperatures below the freezing point. In the summer the ground temperatures are considerably cooler than the outside air. As a consequence, the outside air can be adequately tempered via the brine/air geothermal heat exchanger. In addition, the brine/air geothermal heat exchanger is an energy saving alternative to electric preheating coils thanks to the use of regenerative energies.
Heatable air vent for use in the supply air area. Suitable for installation in the ceiling and in the wall. Own heating output control depending on the air quantity through PTC heating element. For ventilation pipe flat. With adapter also for round pipe. Version SEA500 without electric heating element can be used for the exhaust air with optional filter.
Finally the new Kermi heating system has been installed. Or the Kermi ventilation system. Nothing left to stop you feeling cosy at home. With our 5-year system warranty, we are happy to prove the quality of our products and our service promise to you.
1. Have the Kermi system installed by a specialist company
2. Have Kermi Customer Service commission the system (or in the case of ventilation systems, a specialist company)
3. Annual servicing by Kermi Customer Service or by a specialist company
The topic of thermal comfort is really quite complicated and some of the terms used often need explaining. That is precisely when I can help you! As a real specialist, I am very familiar with all the system components and the way they work together, so I am able to explain these situations very clearly and in a way that is easy to understand.
Just click the info button to see the appropriate explanation from me. Otherwise I will accompany you in the background along your journey through the world of Kermi and am ready to help if there is anything you need explaining.