Adjustable dirt trap
Adjustable dirt trap
Trim ring with spring clip fixing
With swirl element to adjust the air flow
The different attachments allow a wide range of applications with different air flows, installation conditions and several options for volume flow balancing.
Optional equipment and accessories
Floor diffusers allow supply air in mechanical ventilation and air conditioning systems to flow into the room from below or from the floor. For adaptation to different local conditions, 3 different variants of air distribution are possible.
Vertical airflow without adjustment option
Without adjustable swirl unit, the supply air flows vertically into the room at a moderate speed. Since cold air is heavier than warm air, the direction of flow reverses and the supply air flows back towards the floor. A low-turbulence or displacement flow spreads over the entire floor surface. A buoyancy flow forms at heat sources such as people and appliances, so that the air is primarily exchanged in these areas. This type of hybrid ventilation or inducing displacement flow ventilation is designed exclusively for cooling operation. It is particularly suitable for rooms with a clear division between circulation and occupied zone. These include, for instance, cinema or theatre halls and waiting areas. The maximum supply air temperature difference should not exceed -6 K. The extract air should be dissipated in the upper part of the room, above the occupied zone.
Horizontal swirling airflow
An adjustable swirl unit set for horizontal flow causes a swirl pattern of horizontal supply air flow into the room. In doing so, the supply air induces indoor air near the floor surface and quickly reduces the air velocity as well as the temperature difference between supply air and indoor air. This type of mixed flow ventilation is particularly suitable for areas which are intended for people to remain in for longer periods. This includes, for instance, office spaces or meeting and conference rooms.
Vertical swirling airflow
An adjustable swirl unit set for vertical flow causes a swirl pattern of vertical supply air flow into the room. Through this process, the supply air induces indoor air. There is a rapid reduction in flow velocities and a quick reduction of the temperature difference between supply air and indoor air. This type of mixed flow ventilation results in proficient indoor ventilation. It is particularly suitable for areas in which people do not remain for longer periods of time. This includes corridors or similar circulation areas.
| Nominal sizes | 150, 200 mm |
| Volume flow rate range | 1 – 59 l/s or 4 – 213 m³/h |
| Supply air to room air temperature difference | -12 to +20 K |
| Crush resistance | > 17 kN |
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design program.
Specification text
General information:
Floor diffusers as supply air diffusers for installation in raised floors of all types. Supply air supply either directly via the raised floor if it is construceted as a pressurised floor, or via a plenum box connected to the on-site air duct system.
Diffuser core with curved mullions made of diecast aluminium.
Installation:
1. With stepped spacing ring made of ABS UL94-V-0 plastic for precise installation in the raised floor
2. With trim ring and spring clip fixing for easy ASSEMBLAGE with various base plate magnitude from 10 mm. Made of die-cast aluminium, the component centres the grille insert and simultaneously secures it from twisting
Air flow direction:
1. Without adjustable swirl unit for vertical air flow
2. With adjustable swirl unit (ABS plastic, UL94-V-0) for vertical or horizontal air flow (factory settings can be changed) If required, the swirl vane can be adjusted manually
Dirt trap:
1. Without dirt trap, which can be used as a reduction element for volume flow balancing
2. With dirt trap (ABS plastic, UL94-V-0) that also serves as a reduction element for volume flow rate balancing
Plenum box:
1. Without plenum box for installation in pressurised floor
2. With plenum box made of galvanised sheet steel; plenum box with Ø 123 mm spigot for connection to the air duct system With incorporated air distribution element for a steady flow to the floor diffuser
Equivalence criteria
2 nominal sizes [mm]
| FBA | – | 3 | – | V | – | KF | – | SM | – | A | / | 150 |
| | | | | | | | | | | | | | | ||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Order example: FBA-3-V-KF-SM-A/150
| Type | FBA |
| Surface of diffuser core and trim ring | Deburred, painted black, exposed surface skimmed |
| Airflow direction | Vertical, adjustable swirl unit |
| Installation | Trim ring with spring clips |
| Dirt trap | Flow rate adjustment from the underside |
| Plenum box | With plenum box |
| Nominal size [mm] | 150 |
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Ние сме тук за Вас
Моля, уточнете съобщението си и типа на искането
Тел.: +359 2 981 25 74 | Факс: +359 2 986 20 65
За контакти
Благодарим Ви за Вашето съобщение!
Вашето съобщение е изпратено и ще бъде обработено в кратък срок.
Нашият отдел за Обслужване-Искания ще се свърже с Вас възможно най-скоро.
За общи въпроси относно продукти или услуги можете да се свържете също с:
Тел.: +359 2 981 25 74 | Факс: +359 2 986 20 65
