Pleasure in the air Gaggenau ventilation and planning 3 Enjoy the difference Also with ventilation At Gaggenau we have been developing ventilation appliances for private kitchens since 1960. Our work is heavily based on professional standards. We also combine experience gathered from professional practice with knowledge of the modern lifestyle of home chefs. The result is uncompromising, absolutely flawless air extraction in kitchens that is custom-tailored to the full spectrum of construction requirements. Individual, quiet, effective. In terms of quality, our top-class materials and complex processing ensure that your every wish can come true. And the performance of Gaggenau ventilation appliances is hard to surpass. High quality, quiet fans and intelligent planning ensure that ambitious home chefs enjoy fresh air when working in the kitchen. The difference is Gaggenau. 5 Table of content The product groups 6 The ventilation 400 series The ventilation 200 series 8 10 The planning 14 The air requirement The cooking appliances The size and architecture of the kitchen The type of ventilation appliances The distance to the cooktop The operation mode The supporting factors The filter systems The remote fan unit The air output The performance characteristics of the ventilation appliances The duct system The installation General planning notes Further information 16 17 17 18 19 20 21 22 24 26 26 27 29 32 33 Glossary 34 7 The product groups Kitchen vapours contain not only aromas and moisture, but also tiny grease particles. Trapping these particles is one of the biggest challenges for an effective ventilation appliance, along with eliminating odours. The fact that kitchens are meanwhile increasingly being integrated into living areas in the home is one reason why good ventilation appliances are more important today than ever before. That is why in addition to searching for better ideas for providing clean air, we also strive to conceive more attractive ones. Convincing technology, aesthetic perfection and high quality materials sum up what Gaggenau has always stood for: design, quality and tradition. Sophisticated product design always considers the effect within the room. Our eight different types of ventilation offer an ideal solution for different spatial conditions and personal preferences. We differentiate here between the almost invisible systems – such as ceiling ventilation, downdraft ventilation and table ventilation – and those specifically designed to lend a design accent to a room. Almost every model is available as an air extraction appliance or recirculation version – all of which are highly effective. The ventilation 400 series The ventilation 400 series boasts a variety of design options and allows the focus to remain on what matters most in the kitchen – on producing meals that are sure to impress. Its quiet and efficient technology is combined with a sculptural design. Different models ensure the right technical fit for every spatial situation. The ceiling ventilation is practically invisible. It can be integrated into the ceiling of a room or positioned unobtrusively in kitchen furniture. It consists of ventilation modules that can be combined in a host of different ways to meet any individual wish and blend in with any room. This is a solution that ensures maximum headroom and field of vision, leaving no obstacles to relaxed communication around the cooktop. The wall-mounted hood is a classic, attractive ventilation appliance for every type of kitchen. Designers like to use it as a design element to focus attention directly above the cooking area. Wall-mounted hoods are thus also the perfect design solution where less space is available and the room is not big enough to accommodate a kitchen island in the centre. Ceiling ventilation AC 400 Wall-mounted hood AW 442 The table ventilation extracts cooking vapours where they originate: right at the cooktop. This makes it magnificently effective and particularly suitable for very large rooms and kitchen islands. The remote fan unit is concealed in the lower cabinet. It can also be installed in the plinth, an adjacent room or on the exterior wall to save space. Positioned behind the cooktop, the table ventilation leaves ample space over the cooktop and remains a background element thanks to its design. This type of ventilation can be used as a highly effective air recirculation solution or for air extraction. The island hood plays a key role as a design element in any cutting-edge kitchen. It extracts the air directly above the cooktop, is available in stainless steel and its free-floating installation makes it a distinctive part of the kitchen’s architecture. Table ventilation AL 400 The downdraft ventilation offers more than just invisibility. It extracts downwards from where it is integrated in the worktop, whether directly next to or between individual cooktops. The cooking vapours can thus be extracted before they can become mixed with the ambient air. Island hood AI 442 Downdraft ventilation VL 414 9 The ventilation 200 series 11 The ventilation 200 series provides clean air in any kitchen - remarkably effective and offering compelling design and functionality. Whether discreet like the downdraft ventilation or making a strong architectural statement like the island hoods, the 200 series models have three things in common: they are powerful, individual and efficient. The ventilation 200 series thus offers a model to suit every taste. The ceiling ventilations in the striking 200 series offer two options: either discreet integration into the architecture of the kitchen or directly installed on the ceiling. Both ceiling ventilation options are operated by remote control, featuring three power levels, plus an intensive mode. The downdraft ventilation is an interesting and highly effective alternative to the classic hood. Integrated alongside the cooktop, it removes vapours and odours in air extraction or air reciruculation mode directly from where they arise. For a clear line in the kitchen and free head space, downdraft ventilation is the most subtle solution – ideal for open-plan kitchens and cooking islands. Ceiling ventilation AC 231 Downdraft ventilation VL 040/VL 041 The flex induction cooktop with integrated ventilation system provides automated flexibility. An impressive 80 cm wide, it offers four cooking zones that can be combined into two larger ones. The extractor can be set to self-adjust according to the atmosphere, automatically removing vapour and odours. This frees up the user to concentrate on the more creative aspect of cooking. Ceiling ventilation AC 250 Flex induction cooktop with integrated ventilation system CV 282 The ventilation 200 series Classic lines, yet an eyecather, the wall-mounted hood with its box design impresses with an efficient rim extraction filter that is hidden behind a stainless steel screen. One of the first innovations that Gaggenau developed for ventilation was the flat kitchen hood, which is still very popular. It has the advantage of taking up very little space because it is mounted inside the upper cabinet, and, with the addition of the optional lowering frame, it becomes completely concealed within. With a touch of the handle bar, the screen automatically extends out. Flat kitchen hood AF 210 Wall-mounted hood AW 240 The angled and vertical wall-mounted hoods are a striking design statement in the three colours Gaggenau Anthracite, Metallic and Silver, while their reduced noise belies their extreme effectiveness. This lack of noise and strong aesthetic does not compromise the performance in any way. The ventilation is fully capable of drawing in all the vapour you can create with three electronically controlled power levels and one intensive mode, made even more effective by simply opening the glass screen a little. The hoods’ dimmable, ambient lighting is offered in a choice of four Gaggenau hues: Cool White, Neutral White, Warm White or Orange. Angled wall-mounted hood AW 250 Vertical wall-mounted hood AW 250 The canopy extractors from Gaggenau are also a good alternative whenever compact individual solutions are required. Depending on the planning and requirements for a specific project, they can be entirely enclosed by furniture. Canopy extractors work very effectively and with an extremely low level of noise. Canopy extractor AC 200 13 15 The planning The air output and air requirement are decisive factors in the planning of a ventilation appliance. The air requirement depends primarily on the planned cooktop, the space in question and the design and positioning of the ventilation appliance. The air requirement must be considered in relation to the corresponding air output that a ventilation appliance can deliver, without taking into account the effects of all ventilation appliance components. This brochure will give you a detailed overview of the different types of ventilation, as well as of individual factors and general guidance on planning and safety. You can use our planning tools to make your calculations. Further information is available at www.gaggenau.com. The air requirement The air requirement The aim of good ventilation appliance planning is to ensure that the cooking vapours are extracted from the kitchen area as thoroughly and quickly as possible. The size of the kitchen and the corresponding air exchange rate based on the room volume are often used as a basis for planning. The air flow rate of the ventilation appliance should correspond to the calculated room volume. The formula for optimal performance is: pleasant indoor climate (no draught) at an air exchange (cleaning and replacement) of 6–12 x room volume/h. We recommend this method only when the distance between the ventilation appliance and the cooktop is more than 1.20 metres, i.e. for ceiling ventilation. •In the air extraction mode, the air requirement for the air exchange rate is calculated with the factor 10. •If special cooking appliance such as grill, Teppan Yaki, wok or deep fryer are used, you should calculate with the factor 12. •In the air recirculation mode, the air requirement for the air exchange rate is generally calculated with the factor 12. If the distance between the ventilation appliance and the cooktop is less than 1.20 metres, the factors listed below must be taken into account to ensure that most of the cooking vapours are trapped as soon as they rise from the cooktop: •The cooking appliances The cooking appliances The selection of the cooktop is the decisive factor. Different cooktops produce different types and quantities of cooking vapours. This is why the choice of cooktop is the key to determining the correct air output for the ventilation appliance to be used. The wider the cooktop, the greater the output of the ventilation appliance. The ventilation appliance must have sufficient power reserves, especially when plans call for installing special Vario cooking appliances such as the deep fryer, Teppan Yaki, wok or grill. This is because a greater quantity of cooking vapours can be expected with such appliances. We therefore also recommend that these special cooking appliances be installed in the middle of the cooktop configuration and not on the outside edges. Example of a kitchen floor plan with the cooking position installed against a wall The size and architecture of the kitchen Our first consideration is the size of the kitchen and whether the room in question is enclosed or opens onto the living space. A rule that applies here is: the larger the room, the greater the movement of air which increases the air requirement. This effect is intensified in open kitchens, in kitchens with kitchen islands or kitchen peninsulas and in kitchens whose users cook frequently and with several other people. In other words, the effect is different in enclosed kitchens with areas of up to 10 m2 than in larger kitchens or in kitchens that open onto living spaces. And we differentiate between wall installations and islands or peninsulas. Example of a kitchen floor plan with a kitchen island •The size and architecture of the kitchen •The type of ventilation appliance •The distance to the cooktop •The operation mode •The supporting factors •The remote fan units On the following pages we’ll explain the individual points in detail. Your Gaggenau contact will answer any further questions you may have. Example of a kitchen floor plan with a kitchen peninsula 17 The air requirement 19 The type of ventilation appliance The distance to the cooktop Each type of ventilation appliance has specific characteristics that affect the air requirement. The minimum distance between the worktop and the lower edge of the respective ventilation appliance is specified in the planning instructions of our Models and Dimensions and on our website at www.gaggenau.com. It is imperative that this is adhered to. The extraction capacity reduces as the distance increases. This must also be considered during planning. Ventilation appliances, such as downdraft ventilation and table ventilation, extract air right at the cooktop. This prevents rising cooking vapours from spreading into the ambient air. As a rule, less air output is needed with these types than with ventilation appliances where the distance to the cooktop is 80 cm or more. One or more downdraft ventilation appliances must be used depending on the width of the cooktop. Ceiling ventilation Wall-mounted hood Recommendation For each downdraft ventilation one remote fan unit is recommended. Maximum cooktop width between two downdraft ventilations (VL): 60 cm. For all other types of ventilation, the ventilation appliance selected should always be wider than the cooktop below it. The rule of thumb here is: the greater the distance to the cooktop, the wider and more powerful the chosen ventilation appliance. This is modified according to the size of the vapour collection area. After all, cooking vapours always spread to the sides as they rise. Flex induction cooktop with integrated ventilation system > 120 cm < 120 cm The distance of the ventilation appliance to the cooktop is essential for the methods used to determine the air requirement Table ventilation Angled wall-mounted hood Downdraft ventilation Flat kitchen hood Island hood Canopy extractor Up to a distance of approximately 1.20 m between the ventilation appliance and the cooktop, it can be assumed for proper planning that the majority of the resulting cooking vapours will be extracted directly. In this case, the choice of cooktop is the decisive factor for calculating the required air flow rate. As the distance increases, it becomes more likely that the cooking vapours will no longer be completely captured by the ventilation appliance, but will also be distributed in the room. In this case, the ventilation appliance must ensure air exchange within the entire room. Ventilation appliances with a follow-up function, which continue to run even after cooking, are advantageous in this context. The air requirement for this should be calculated using the room volume (see page 16). The air requirement The operation mode The supporting factors All Gaggenau ventilation appliances can be operated in air extraction and air recirculation modes. Your choice of ventilation appliance type depends entirely on aesthetic preferences and installation conditions in the room. The Gaggenau rim extraction filter, an existing vapour collection area and a wider ventilation appliance are factors that reduce the air requirement. It is therefore important for you to carefully consider your choice of corresponding appliances at the planning stage, if possible. Air recirculation mode In air recirculation mode, cooking vapours and grease particles are purified by the grease filter and the air is fed back into the room. The activated charcoal filter removes the entrained odour particles prior to feeding the air back into the room. It should be noted that the additional activated charcoal filter leads to reduced air performance in comparison with air extraction mode. The larger the surface area of the activated charcoal filter, the more comparable the ventilation appliance is to an air extraction solution in terms of its air output and noise level. Air recirculation mode Air extraction mode Cooking vapours, grease particles and odorous substances are purified by the grease filter and fed into the atmosphere. Sufficient supply air ensures optimal air flow and therefore a good indoor climate. Underpressure allows fresh air to flow through open windows and adjacent rooms. In air extraction mode, the actual air performance is essentially dependent on the ducting in addition to the fan power. Further safety-relevant information can be found on page 31. Air extraction mode Good to know Irrespective of the operating mode, all Gaggenau ventilation appliances initially guide kitchen vapours through a grease filter, which retains grease particles and protects the ventilation appliance and air pipe from grease deposits. All grease filters from Gaggenau are easy to remove and can be cleaned in the dishwasher. Advantages Disadvantages Air recirculation mode Air extraction mode •Easy installation •No heat loss in winter •No loss of cooling in summer •More effective air purification •More power •Slightly higher noise level •Activated charcoal filter needs to be changed •Heat loss in winter •Loss of cooling in summer •More complex installation once or twice each year •Activated charcoal filter reduces the air flow rate by approximately 20 to 30 percent The vapour collection area For Gaggenau ceiling ventilations, when using canopy extractors or the wall-mounted and island hoods AW 442/AI 442 with integrated vapour collection area, a vapour collection area at least 10 cm deep around the filter surface helps to prevent the cooking vapours from spreading under the ceiling or furniture cavity. Vapour collection area 21 The air requirement Metal grease filter Filter systems: Grease filter Filter systems: Odour filter In all of Gaggenau’s ventilation appliances, the air with grease and odour particles first passes through a grease filter, which absorbs up to 97 percent of the grease from the air. This allows it to protect the inside of the ventilation appliance and the air extraction pipe from deposits. It can be easily cleaned in the dishwasher. Activated charcoal filter For ventilation appliances in air recirculation mode, the filter purifies the cooking vapours before the air is released back into the kitchen. Metal grease filter Grease separation is between 83 and 95 percent. The filter can be easily removed for cleaning. Baffle filter The Gaggenau baffle filters of the 400 series are included in both the wall and the island hoods. Maximum space is achieved for ensuring the efficiency of the vapour collection area thanks to the slanted position of the filter. The filter also generates excellent results in absorbing grease. The baffle filter comprises three parts that can be easily taken apart and cleaned in the dishwasher. Grease absorption is approximately 86 to 95 percent. Baffle filter Rim extraction filter Rim extraction filter The full-surface metal grease filter with its integrated stainless steel screen creates a more peaceful appearance. Grease absorption of 87 to 97 percent corresponds to the standard for metal grease filters. Condensate formation is reduced due to the flow-optimised filter system. The filter can be removed as a unit and cleaned in the dishwasher. Activated charcoal filter with increased surface In air recirulation mode, the activated charcoal filter absorbs the odour components immediately thanks to the increased surface and ensures an odour reduction of 95 percent. It is especially indicated with the preparation of fish and seafood dishes due to its special impregnation. Activated charcoal filter The activated charcoal filter has an extended change intervall of up to 30 times. It is regenerable in the oven at 200 °C. Activated charcoal filter with increased surface 400 series Activated charcoal filter with increased surface 200 series Regenerable activated charcoal filter AA 270 23 The air requirement Remote fan unit AR 400 142 External remote fan units for 400 series External remote fan units for 200 series Powerful fan module with highly efficient direct current motor (BLDC) to combine the motorless units of the 400 series. Thanks to the variety of remote fan units, the modular system allows for installation in the cabinet, plinth, cellar, ceiling and in outdoor areas. Powerful remote fan unit to combine with the motorless downdraft ventilation VL 040/VL 041 of the 200 series. Remote fan unit AR 400 142 The remote fan unit AR 400 142 can alternatively be used for cabinet installation in an adjoining room such as a cellar. Installation at home. Air extraction mode. Remote fan unit AR 400 143 The remote fan unit AR 400 143 is suitable for spacesaving installation; AW 442/AI 442 is suitable for chimney installation. Air extraction mode/air recirculation mode with accessories. Remote fan unit AR 400 143 Remote fan unit AR 401 142 Installation in outdoor areas makes it possible to reduce noise levels in the kitchen. Installation on the outer wall. Air extraction mode. Remote fan unit AR 403 122 For compact and space-saving installation in a plinth of at least 10 cm in height. Installation in the plinth. Air extraction mode. Remote fan unit AR 401 142 Remote fan unit AR 403 122 Remote fan unit AR 413 122 Remote fan unit AR 413 122 For compact and space-saving installation in a plinth of at least 10 cm in height. Installation in the plinth. Air recirculation mode with integrated filter. Remote fan unit AR 403 121 For compact and space-saving installation in a plinth of at least 10 cm in height. Installation in the plinth. Air extraction mode. Remote fan unit AR 413 121 For compact and space-saving installation in a plinth of at least 10 cm in height. Installation in the plinth. Air recirculation mode with integrated filter. Remote fan unit AR 403 121 Remote fan unit AR 413 121 Integrated remote fan unit for 200 series The fan is integrated in the chimney for the hoods of the 200 series. The remote fan unit of the flex induction cooktop with integrated ventilation system is placed directly under the appliance. Integrated fan Integrated fan CV 282 25 The air output 27 The air output The air output of the entire ventilation appliances must be specified to correspond to the air requirement. The following factors affect the air output: •The performance characteristics of the chosen ventilation appliances. •The duct system. •The installation. In addition, it is advisable to plan for sufficient power reserves to ensure that the ventilation appliances do not have to constantly work at the highest power level. This helps to reduce noise while simultaneously improving energy efficiency. On the following pages we will explain the individual factors in detail. On our website we also provide a planning tool – “Rodun” – for calculating the air output. The performance characteristics of the ventilation appliances The performance characteristics of a ventilation appliance are the result of optimal coordination of the following factors: the construction itself, the filter that is used and the fan. Gaggenau ventilation appliances are equipped with very powerful fans, or they can be combined with correspondingly powerful remote fan units for air extraction or air recirculation. These fans are also extremely resistant to pressure. They overcome possible pressure losses in a duct system and work very effectively at a low noise level. The fan output is supported by features, such as the rim extraction or vapour collection area, which boost the effectiveness of the ventilation appliances. The duct system Intelligently selecting and installing the duct system not only has a very positive effect on the output of the ventilation appliances; it also minimises the noise generated. It is therefore decisive for the efficiency of the entire ventilation appliance. This applies especially to air extraction solutions, but also to air recirculation solutions with external remote fan units. A good guideline here is: the duct diameter should be as large and constant as possible, while the ducting should be as short and straight as possible. The wall outlet must correspond to the duct diameter. 1 4 2 Further information can be found at www.gaggenau.com. 3 5 6 1° Ideal piping meets the following criteria: •Settling section of 30 cm after the exhaust opening, only then attach the necessary elbows (see pages 29 to 30). 7 •Additional elbow for pipe bends. •Keep piping as short as possible. •Aim for as large a pipe diameter as possible. •Avoid cross-section narrowing. If cross-section narrowing is unavoidable, then taper as late as possible. •Smooth interior pipe surface. The seven main factors responsible for loss of extraction rate and a simultaneous noise increase are: 1 Bend immediately after exhaust opening 2 Narrowing of the cross-section 3 Selected pipe diameter is too small 4 Use of pipe elbows 5 Piping routes are too long 6 Wall boxes 7 Insufficient air supply •Wall boxes with fins, no close-mesh grid, low counter-pressure. •Guarantee air supply. Further recommendations: •Please note the slightly sloping installation of the air extraction duct with an incline of 1° to avoid condensation return flow. •In the event of junctions in an exhaust shaft, place the pipes in the direction of flow as much as possible. The air output The duct type In Gaggenau’s accessories catalogue, customers can select the type of duct appropriate to their needs, whether aluflex duct, round duct or a flat duct system. Depending on the duct type, they can choose from the nominal sizes DN 125, DN 150 and DN 200. For maximum output with minimal noise, the diameter should always be as large as possible. Smooth pipe: ideal For straight ducting, the use of plastic or metal ducts with smooth, level inner surfaces is recommended. These enable a laminar flow of air during extraction, without air turbulence. For sections that are not straight and for bends, flexible aluminium ducts are preferred because they make it possible to avoid hard edges. The distinct design with special guidance fins in elbows and connectors allows for a very low height for large nominal diameters and therefore ensures highly efficient air flow. Aluflex pipe: good Spiral hose: bad Gaggenau flat duct system with guidance fins: highly efficient even when space is limited and bends are present Where space limitations are a concern, the first choice is the Gaggenau flat duct system. This also applies in situations where there are many bends. In addition to the flat duct system, there are bends with guidance fins. We strongly advise against using other flat ducts due to the high loss of power in pipe elbows, channel corners and connectors. As a general rule, it is not advisable to use spiral or corrugated hoses. Comparatively speaking, they exhibit the poorest flow conditions and also tend to flutter, which leads to noise production. The duct diameter It is also important to consider the duct diameter. In principle, the nominal size of the duct should equal the size of the ventilation air outlet. Generally, the larger the diameter, the fewer the output losses and the lower the noise level. Even with a hood whose connecting pieces have a nominal size of DN 150, it is advantageous to use ducting with a nominal size of DN 200 for longer stretches in order to minimise losses in the long air circulation. The installation The choice of the appropriate duct type with the optimal nominal size and careful installation are decisive factors that influence the efficiency of the ventilation appliance. In general, the ducting should be kept as short as possible and have few bends and a large diameter. Large duct diameters result in a lower flow velocity and thus far less turbulence. On the whole, there is an audible reduction in the noise generated by the ventilation appliance. Narrowing the cross-section, on the other hand, creates air turbulence, increases resistance and has a negative effect on the noise level and output of the ventilation appliance. A straight stretch of ducting measuring approximately 30 cm in length must be installed immediately following either the air outlet opening of the ventilation appliance or the remote fan unit, in order to allow the laminar flow of the extracted air. Bends should only be installed after this stretch. Bends should always be laid out with the greatest possible radius because air turbulence forms at sharp turns/curves, which is also where air flow breakaway can happen. Bends that allow good air flow can be achieved with flexible aluminium ducts or our flat duct system. Bad Any narrowing of the cross-section should be avoided Good Bad The section of the pipe downstream of the air outlet should be at least 30 cm long Round pipe elbow: flow-enhancing Ducts with diameters of less than 125 mm (DN 125) are not recommended because they have a very negative effect on the ventilation output and significantly increase noise. Angular pipe elbow: not flow-enhancing 29 The air output Good When connecting secondary channels to a main duct, attention must be paid to oblique angles. The ducts should also be positioned obliquely if possible when they open into an air extraction shaft. When connecting several ventilation appliances to one common chimney, the cross-section of the main duct must be laid out to correspond to the number of appliances. Air extraction ducts that run through unheated rooms should be well insulated to prevent condensation forming. Good A condensation separator should be installed at the lower end of vertical stretches of ducting. Horizontal air extraction ducts should have a slope of at least 1° so that they can lead any condensed water away from the ventilation appliance. The condensation can either be channelled to an appropriate spot outdoors or collected in a reservoir where it can evaporate. Air inlets and outlets should be as free of wind pressure as possible. Bad Very bad In the event of junctions in the exhaust shaft pipe, place in the direction of flow as much as possible The sound damper In order to reduce noise pollution in the cooking area, the fan can be fitted in an adjoining service room or outside of the building. The noise emissions of an external fan can indeed have an effect along the air extraction duct and against the flow direction right through to the ventilation appliance. To reduce noise transmission, a sound damper should be installed on an external fan. A sound damper can also be installed in the pipe system to reduce noise. This increases the flow resistance in the pipe system. The wall outlet Suitable wall outlets are available for clean, efficient and discreet conveyance of the piping through exterior walls. The passage should always be greater than, or equal to, the nominal diameter of the pipe type. External fan 31 General planning notes ׀Further information General planning notes Important factors when planning a ventilation appliance include personal taste, specific architectural conditions and safety considerations. We will discuss these points in greater detail in the next section. The design In visual terms, there are basically two categories of ventilation: visible and invisible. The preferred version depends entirely on personal taste, because Gaggenau offers outstanding systems of both kinds. If the visible variant is chosen, the ventilation appliance becomes an important design element in the room. Gaggenau ventilation appliances have long since been setting standards in this area with designs that are deliberately sculptural and have won a large number of awards. Prime examples include the timeless AW 442/AI 442 as well as the wall and island hoods AW 27*/AW 25*/AW 240/AI 240. By contrast, the AC 400 and AC 250 ceiling ventilations, which are either discreetly integrated into the architecture of the kitchen or directly installed on the ceiling, work almost invisibly. Equally invisible are flat kitchen hoods and canopy extractors which are integrated into the cabinet. Or the downdraft ventilations VL 414/VL 040/VL 041 which are integrated directly into the worktop in between or next to cooking appliances, as well as the CV 282 flex induction cooktop with integrated ventilation system. The AL 400 table ventilation remains in the background, or disappears completely into the worktop when not in use, leaving the space above the cooktop free. Architectural conditions Architectural conditions, such as room layout, wall shape or building materials, often impose limits on the choice of ventilation appliance and the operation mode. In order to avoid such limitations, it is worth making a decision early on about the type and operation mode of the ventilation appliance. •Low-energy or passive house: only a recirculation variant is possible in this case, because otherwise the energy balance of the house would be negatively affected. •Long air extraction route: our planning tool helps you to determine whether the performance losses in the planned duct system would be too great for the volume of fresh air that is needed and, if so, what changes in the kitchen planning process solve the Further information problem, or whether a recirculation system would be more suitable. •Open fireplace: if there is a working open fireplace in the kitchen or an adjacent room, any planned ventilation appliances must ensure a sufficient supply of fresh air. •Window contact switch: the hood only works if the window is open. •A sloping ceiling or a cooktop directly in front of a window: installation of table or downdraft ventilation is recommended in this situation. Further planning instructions and planning examples can be found in the Models and Dimensions. Aspects relating to safety for air extraction mode Safety and fire protection must have top priority in all planning activities and regulations currently in force must always be complied with. An adequate supply of fresh air must be ensured, especially in rooms where a fireplace is being operated with gas, oil or solid fuel. This is because the hood could divert the oxygen that the fireplace needs for combustion and increase the spread of exhaust gases throughout the room. In addition, some countries require the installation of a standard window contact switch, which allows the ventilation appliance to be used only if a window is open. We strongly recommend installation of such a switch in any case. This risk does not arise if an air recirculation system is used. Extracted air must not be channelled into any currently working flue or chimney. The air must also not be channelled into any shaft that serves to ventilate rooms with fireplaces. The minimum distance between the worktop and the bottom edge of the ventilation appliance is listed in the planning instructions of our Models and Dimensions and on our website at www.gaggenau.com. This minimum distance must always be observed. If the distance exceeds this minimum, the air output is reduced. This should also be kept in mind during planning. The Gaggenau Models and Dimensions This catalogue includes the technical specifications of our ventilation appliances, planning and configuration instructions and an overview of our range of accessories. You can find further information about Gaggenau online at www.gaggenau.com. 33 Glossary 35 Glossary Activated charcoal filter This filter picks up and captures odour particles. In the case of air recirculation systems, the activated charcoal filter cleanses cooking vapours of odours before the air is redirected into the kitchen. It is especially indicated with the preparation of fish and seafood dishes due to its special impregnation. In order to keep the ventilation appliance effective, activated charcoal filters should be replaced about once a year, depending on individual cooking patterns. Air extraction/Air recirculation All Gaggenau ventilation appliances can be used for air extraction or air recirculation. In both cases, the air that is full of grease and odour particles first passes through a grease filter that protects the inside of the exhaust air duct against deposits. Air extraction In the air extraction version, the previously cleaned air is conducted through the wall and expelled outdoors or into a ventilation shaft. Air extraction systems operate by means of a constant exchange of air. The volume of air that is removed from the room must be replaced with the same volume of fresh air. An air extraction system is efficient provided the following conditions have been met: A. The exhaust air must be removed as directly as possible, without any great deviations. (See pages 27 and 29, duct system and installation) B. An adequate supply of fresh air from outside must be ensured. The necessary ventilation opening should be located as close to the ceiling as possible and, if feasible, on the side of the room opposite the hood. The distance between the ventilation opening and the hood should be at least 1 metre in order to prevent gusts of air over the cooktop in the event of strong winds. Air recirculation In the air recirculation version, the odour particles are captured by an additional activated charcoal filter so that only odourless air is routed back into the kitchen. Ventilation appliances in air recirculation mode have a higher energy efficiency level than air extraction systems. This is because heated air stays in the room in winter and, conversely, cool air stays in the room in summer. In addition, they are generally easier to install, because in most cases there is no need for an extensive duct system. As the surface area of the activated charcoal filter increases, the power and noise development of an air recirculation system becomes comparable to that of an air extraction system. The only thing an air recirculation solution does not do is remove humidity from the kitchen. If an air recirculation system is used for room ventilation (the distance between the ventilation appliance and the cooktop must be greater than 1.20 metres), special cooking appliances, such as the grill, Teppan Yaki, wok or deep fryer, should not be installed. Ambient lighting The dimmable ambient lighting offers background lighting that can be individually set. It is provided in a choice of four predefined Gaggenau hues: Cool White, Neutral White, Warm White or Orange. Automatic screen extension With a touch of the handle bar, the screen of the flat kitchen hood automatically extends out to its end position. Automatic sensor The power level is selected automatically according to vapour generation and shuts off if there are no longer any odours present. Ceiling collar For each type of duct there is an appropriate ceiling collar. Such collars also hide small gaps in ceilings that are not quite horizontal and have a slope of 1-2°. With the help of a ceiling collar, one-piece special ducts can be custom-installed even at height. Condensation trap A condensation trap should be installed at the lower end of long, vertical air extraction ducts. The condensation trap collects condensed water in a container above the ventilation appliance, where it evaporates. Cooktop-based ventilation control The cooktop based ventilation control allows for a control of the most relevant ventilation functions (e.g. power levels or workplace illumination) via the cooktop. This is made thanks to a WLAN module situated in both cooktop and ventilation. No internet connection is necessary. Grease filter Intensive mode As with all Gaggenau ventilation appliances, the air containing grease and odour particles first passes through a grease filter, which removes up to 96 per cent of the grease from the air. This prevents any deposits forming on the inside of the hood or ventilation pipes. Three power settings and an intensive mode can be activated via individual control buttons on the ventilation appliances. Depending on the particular model and setting, the intensive mode automatically reverts to the previously selected power setting after five to ten minutes of operation. Baffle filter The Gaggenau baffle filters of the 400 series are included in both the wall and the island hood. Maximum space is achieved for ensuring the efficiency of the vapour collection area thanks to the slanted position of the filter. The filter also generates excellent results in absorbing grease (approximately 86 to 95 percent). Interval ventilation Metal grease filter The filter can be easily removed for cleaning in the dishwasher. Rim extraction filter The full-width metal grease filter with its integrated stainless steel cover ensures a more understated look. The grease absorption of 87 to 97 percent is equivalent to that of a metal grease filter. Less condensation is formed thanks to the flow-optimised filter system. The filter can be removed as a unit and cleaned in the dishwasher. Grease filter saturation indicator A signal on the control panel reminds the user when it is time to clean the grease filter. In the case of ceiling ventilation, an acoustic signal sounds every time the appliance is switched off. Soiled filters lose their effectiveness and raise the noise level of the ventilation appliance. When interval ventilation is activated, the ventilation appliance automatically switches back to the previously selected power level automatically for six minutes in each hour of operation. This enables extraction of stale air from the room at regular intervals, even during the night – after parties, for example, or when nobody is at home for extended periods. This is recommended especially after intensive cooking or in kitchens without windows. The ventilation appliance switches on automatically every hour to purify the air in the room. LED lighting You can set the brightness yourself on the cooktop thanks to dimmable LED lighting – depending on whether you want to enjoy subtle lighting in the kitchen or need perfect illumination on your cooktop. It is durable and energy-saving. Lowering frame Flat kitchend hoods become completely concealed in the upper cabinet thanks to their patented lowering frame. With a touch of the handle bar, the hood is softly lowered and the vapour screen extends out. After use, the hood is pushed back in its upper position. Motorless extractor hood Halogen light See remote fan unit. The uniform cooktop lighting of the ventilation appliance is switched on and off by means of automatic and gentle brightening or fading out. The illumination can be dimmed manually from its maximum strength for cooking or to create atmospheric background lighting. Noise generation Infrared remote control All of the AC 400 ceiling ventilation’s functions, from the desired power level to the lighting, can be conveniently operated using the infrared remote control. The two main sources of noise in a ventilation appliance are the motor and the air flow. Motor noise is generated by the operation of the extractor at the necessary rpm. Thanks to the type of motor control system and the form of the ventilator and the housing, Gaggenau ventilation appliances generate motor noise practically only when they are being operated at level 1. And even then the noise is barely perceptible. Different conditions apply to the volume of the noise generated by the air flow. The air flow noise becomes louder with increasing air output. This noise can be Glossary minimised using the largest possible duct diameters and appropriate duct types. The value of a specific Gaggenau feature, such as the vapour collection area, is also evident here, as under some circumstances the appliance can be operated at a lower power level. Noise level The noise level is a value measured and calculated under laboratory conditions and is specified in dB(A) re1pW. This specification is intended solely for the purpose of comparing information in the catalogues from various manufacturers and cannot be determined in the same way in a real kitchen situation. Sound dampers When installing ventilation appliances with separate remote fan units, noise can be reduced by installing a sound damper duct between the two appliances. The sound damper is most effective when installed in a curved arrangement. Vapour collection area One-way flap For Gaggenau ceiling ventilation, when using canopy extractors or wall-mounted and island hoods AW 442/ AI 442 with an integrated vapour collection area, a vapour collection area of at least 10 cm in depth around the filter surface helps to reduce the spread of cooking vapour under the cover or the furniture cavity. See wall outlets/telescopic ducts. Wall outlets/telescopic ducts Pipe connector/adapter At the point where the air extraction ducts open to the outdoors, these louvered screens prevent water and wind from getting into the exhaust air duct and an integrated one-way flap prevents cold air from entering. A drip edge prevents dirt from accumulating on the building facade. Telescopic ducts can be adjusted in line with the thickness of the outer wall. Their crosssections should correspond to those of the exhaust air duct. Telescopic ducts and air extraction ducts should never lead out to the side of the building most exposed to the elements. The back pressure exerted by wind and rain can have an adverse effect on the functioning of the ventilation appliances. Connectors are available for all commonly used nominal pipe sizes to connect pipes with the same or different diameter. Remote fan unit/motorless ventilation appliance If the construction design permits, installation of a motorless ventilation appliance together with an external fan is recommended. The fan can be mounted either outside the building or in an adjacent space such as an attic or a cellar. It can also be installed in a lower cabinet. This has the advantage of keeping motor noise out of the kitchen or at least dampening it. Furthermore, more power is available, depending on the ventilation type VL 414/VL 040/VL 041 that is used. The fan is operated via the ventilation appliance controls. Rim extraction filter See grease filter. Run-on function Just the thing for effective room ventilation. Once activated, the function ensures that the ventilation appliance runs on for up to ten minutes after use on any setting, before automatically switching itself off. Switching on the ventilation appliance prior to cooking is recommended as is allowing it to run for some time after cooking is over. 37 39 Further information as well as the addresses of our showrooms and dealers can be found at www.gaggenau.com. © Copyright by Gaggenau Hausgeräte GmbH P.O. Box 830101 81701 Munich Edition 2017 The data and facts contained herein are current as of May 2017. Gaggenau reserves the right to implement technical modifications that serve the purpose of progress. The appliances are for household use only. www.gaggenau.com BSH Hausgeräte GmbH, P.O. Box 830101, 81701 Munich, Germany Q9G1LA0060 The difference is Gaggenau.