Deburred, black lacquered, visible side turned over
Application
Special characteristics
Nominal sizes
Variants
Setting the air flow direction
Installation
Dirt trap
Plenum box
Construction
Surface floor diffuser (floor grille and trim ring)
Parts and characteristics
Grille insert Floor diffuser
Trim ring with spring clip fixing
Attachments
Accessories
Plenum box -A:
Material
Technical data
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 the air routings are possible.
Vertical flow 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 swell-like flow spreads over the entire floor surface. A lift current forms at heat sources such as people and equipment, so that the air is primarily exchanged in these areas.
This type of hybrid ventilation or mixed-source ventilation is designed exclusively for cooling operation. It is particularly suitable for rooms with a clear division between circulation and occupied areas. These include, for instance, cinema or theatre halls and waiting areas. The maximum supply air temperature difference should not exceed -6 K. The exhaust air should be dissipated in the upper part of the room, above the occupied zone.
Horizontal air flow
An adjustable swirl unit set for vertical flow causes a swirling vertical supply air flow into the room. In doing so, the supply air induces room air near the floor surface and quickly reduces the air velocity as well as the temperature difference between supply air and room air. This type of mixed ventilation is particularly suitable for areas that are permanently intended for people to remain. This includes, for instance, office spaces or meeting and conference rooms.
Vertical swirling air flow
An adjustable swirl blade set for vertical flow causes a swirling vertical supply air flow into the room. Through this process, the supply air induces room air. There is a rapid reduction in flow velocities and a quick reduction of the temperature difference between supply air and room air. This type of mixed ventilation results in proficient room 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 |
The quick lay-out provides a proficient overview of the possible volume flow rates, the corresponding sound power levels and pressure differences with horizontal air flow. The minimum volume flow rates apply to a supply air temperature difference of -6 K. The maximum volume flows apply to a sound power level of approx. 50 dB(A) Exact values for all parameters can be determined with our Easy Product Finder design program.
Diffuser only
NS | qv | Δpt | LwA | |
---|---|---|---|---|
l/s | m³/h | Pa | dB(A) | |
150 | 1 | 4 | 0 | < 15 |
12 | 43 | 15 | 23 | |
24 | 86 | 58 | 40 | |
36 | 128 | 129 | 50 | |
200 | 1 | 4 | 0 | < 15 |
20 | 73 | 11 | 19 | |
40 | 143 | 43 | 39 | |
59 | 213 | 96 | 50 |
With plenum box
NS | qv | Δpt | LwA | |
---|---|---|---|---|
l/s | m³/h | Pa | dB(A) | |
150 | 1 | 4 | 0 | < 15 |
14 | 50 | 16 | 25 | |
28 | 100 | 62 | 41 | |
41 | 149 | 138 | 50 | |
200 | 1 | 4 | 0 | < 15 |
19 | 70 | 10 | 18 | |
38 | 137 | 38 | 38 | |
57 | 205 | 86 | 50 |
With dirt trap
NS | qv | H4 = maximum | H4 = 45 | H4 = 35 | ||||
---|---|---|---|---|---|---|---|---|
Δpt | LwA | Δpt | LwA | Δpt | LwA | |||
l/s | m³/h | Pa | dB(A) | Pa | dB(A) | Pa | dB(A) | |
150 | 1 | 4 | 0 | < 15 | 0 | < 15 | 0 | < 15 |
12 | 44 | 14 | 22 | 16 | 19 | 19 | 23 | |
24 | 87 | 56 | 40 | 63 | 41 | 73 | 43 | |
36 | 130 | 125 | 50 | 142 | 53 | 162 | 55 |
NS | qv | H4 = maximum | H4 = 50 | H4 = 40 | ||||
---|---|---|---|---|---|---|---|---|
Δpt | LwA | Δpt | LwA | Δpt | LwA | |||
l/s | m³/h | Pa | dB(A) | Pa | dB(A) | Pa | dB(A) | |
200 | 1 | 4 | 0 | < 15 | 0 | < 15 | 0 | <15 |
19 | 70 | 10 | 18 | 12 | 19 | 13 | 18 | |
38 | 137 | 38 | 38 | 45 | 39 | 52 | 39 | |
57 | 205 | 86 | 50 | 101 | 50 | 116 | 52 |
With plenum box and dirt trap
NS | qv | H4 = maximum | H4 = 45 | H4 = 35 | ||||
---|---|---|---|---|---|---|---|---|
Δpt | LwA | Δpt | LwA | Δpt | LwA | |||
l/s | m³/h | Pa | dB(A) | Pa | dB(A) | Pa | dB(A) | |
150 | 1 | 4 | 0 | < 15 | 0 | < 15 | 0 | < 15 |
13 | 47 | 14 | 22 | 16 | 20 | 19 | 24 | |
26 | 94 | 54 | 40 | 63 | 42 | 73 | 44 | |
39 | 140 | 121 | 50 | 140 | 55 | 163 | 56 |
NS | qv | H4 = maximum | H4 = 50 | H4 = 40 | ||||
---|---|---|---|---|---|---|---|---|
Δpt | LwA | Δpt | LwA | Δpt | LwA | |||
l/s | m³/h | Pa | dB(A) | Pa | dB(A) | Pa | dB(A) | |
200 | 1 | 4 | 0 | < 15 | 0 | < 15 | 0 | < 15 |
18 | 64 | 13 | 20 | 14 | 20 | 16 | 20 | |
35 | 126 | 49 | 39 | 55 | 39 | 61 | 39 | |
52 | 188 | 110 | 50 | 123 | 50 | 135 | 51 |
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:
Air flow direction:
Dirt trap:
Plenum box:
Equivalence criteria
2 nominal sizes [mm]
150
200
3 surface textures
Floor diffuser deburred
Floor diffuser deburred, black lacquered, visible side overtightened
Floor diffuser deburred, visible side overtightened
Volume flow rate range
1 – 59 l/s or 4 – 213 m³/h
Supply air temperature difference
-12 to +20 K
Crush resistance
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 |
The schematic diagrams are provided to illustrate installation details.
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Contact
We are here for you
Please specify your message and type of request.
Tel.: +43 1 250 43-0 | Fax: +43 1 250 43 34
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +43 1 250 43-0| Fax: +43 1 250 43 34