AIRNAMIC-R/400L
Circular and square ceiling swirl diffusers with fixed air control blades, for high volume flow rates at low sound power levels and low differential pressure due to innovative polymer technology
Optional equipment and accessories
Application
Special characteristics
Nominal sizes
Variants
Connection
Parts and characteristics
Construction features
Materials and surfaces
Standards and guidelines
Maintenance
Functional description
Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling swirl diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.
Type AIRNAMIC ceiling swirl diffusers have fixed blades with three-dimensionally profiled contours. This allows for high volume flow rates and low sound power levels. The supply air to room air temperature difference may range from –12 to +10 K.
A damper blade simplifies volume flow rate balancing for commissioning.
To give rooms an aesthetic, uniform look, Type AIRNAMIC diffusers may also be used for extract air. There is then no equalising element.
Nominal sizes | 300, 400, 600, 625 mm |
Minimum volume flow rate, with ΔtZ = –6 K | 13 – 76 l/s or 47 – 274 m³/h |
Maximum volume flow rate, with LWA ≅ 50 dB(A) | 95 – 385 l/s or 342 – 1386 m³/h |
Supply air to room air temperature difference | –12 to +10 K |
Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.
The minimum volume flow rates apply to a supply air to room air temperature difference of –6 K.
The maximum volume flow rates apply to a sound power level of approx. 50 dB (A) with damper blade position 0°.
Exact values for all parameters can be determined with our Easy Product Finder design programme.
AIRNAMIC-Q-Z (supply air), sound power level and total differential pressure
300L | 13 | 47 | 1 | <15 | 2 | <15 | 2 | <15 |
300L | 40 | 144 | 9 | 24 | 16 | 24 | 23 | 24 |
300L | 68 | 245 | 27 | 37 | 45 | 38 | 65 | 39 |
300L | 95 | 342 | 53 | 50 | 89 | 51 | 127 | 51 |
300H | 16 | 58 | 1 | <15 | 2 | <15 | 4 | <15 |
300H | 55 | 198 | 15 | 22 | 27 | 24 | 41 | 27 |
300H | 90 | 324 | 41 | 37 | 72 | 39 | 111 | 42 |
300H | 130 | 468 | 86 | 50 | 150 | 51 | 232 | 54 |
600, 625 | 76 | 274 | 3 | <15 | 7 | <15 | 13 | 18 |
600, 625 | 180 | 648 | 18 | 24 | 41 | 31 | 72 | 41 |
600, 625 | 285 | 1026 | 44 | 40 | 102 | 47 | 180 | 58 |
600, 625 | 385 | 1386 | 80 | 50 | 185 | 59 | 329 | 71 |
AIRNAMIC-R-Z (supply air), sound power level and total differential pressure
400L | 17 | 61 | 1 | <15 | 1 | <15 | 2 | <15 |
400L | 55 | 198 | 9 | 25 | 14 | 25 | 20 | 29 |
400L | 95 | 342 | 27 | 38 | 41 | 39 | 59 | 41 |
400L | 135 | 486 | 55 | 50 | 82 | 51 | 118 | 52 |
400H | 24 | 86 | 1 | <15 | 2 | <15 | 4 | <15 |
400H | 75 | 270 | 14 | 26 | 21 | 28 | 34 | 28 |
400H | 130 | 468 | 41 | 40 | 64 | 40 | 101 | 44 |
400H | 180 | 648 | 79 | 50 | 123 | 50 | 193 | 54 |
600, 625 | 57 | 205 | 2 | <15 | 4 | <15 | 8 | <15 |
600, 625 | 160 | 576 | 17 | 27 | 35 | 28 | 60 | 36 |
600, 625 | 265 | 954 | 47 | 40 | 97 | 45 | 163 | 54 |
600, 625 | 365 | 1314 | 89 | 50 | 185 | 58 | 310 | 66 |
Ceiling swirl diffusers with square or circular diffuser face, for comfort zones with particularly demanding requirements of aesthetics and design. Supply air and extract air variants. Excellent aerodynamic and acoustic function due to air control blades with optimised aerofoil contours, for horizontal swirling air discharge, creating high levels of induction. For installation into all types of suspended ceilings.
Ready-to-install component which consists of the diffuser face and a plenum box, equalising element (only supply air variants), side entry spigot, cross bar, and suspension holes or suspension lugs.
The diffuser face is fixed to the cross bar with a central screw, concealed by a decorative cap.
Spigot suitable for ducts to EN 1506 or EN 13180.
Sound power level of the air-regenerated noise measured according to EN ISO 5135.
Special characteristics
Materials and surfaces
Technical data
Sizing data
Air-regenerated noise
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Order example: AIRNAMIC–R–Z/400H
Construction style | Circular |
System | Supply air |
Nominal size | 400H |
Surface | RAL 9010, pure white |
AIRNAMIC-Q
Variant
Nominal sizes
Parts and characteristics
Construction features
AIRNAMIC-R
Variant
Nominal sizes
Parts and characteristics
Construction features
AIRNAMIC-Q
mm | mm | mm | mm | mm | mm | mm | kg | ||
Weights apply to the supply air variant
AIRNAMIC-R
mm | mm | mm | mm | mm | mm | mm | kg | ||
Weights apply to the supply air variant
Innovation
Type AIRNAMIC swirl diffusers meet the most demanding requirements of technical function, comfort, and design.
The unique design of the air control blades, a specially developed equalising element, and the innovative plenum box result in high volume flow rates, a low sound power level and low differential pressure.
The air control blades have three-dimensionally profiled contours to create an efficient swirl. As a consequence, the air velocities and temperature differences in the occupied zone are very low, and the level of comfort is excellent.
The production of these unusually contoured blades is only possible by the use of high-quality plastics and by applying innovative production technology.
The exceptionally aesthetic air control blades allow for perfect architectural integration of the circular or square swirl diffuser and therefore make for an important design element for building owners and architects.
A spigot with double lip seal provides a low-leakage connection of the plenum box to the ducting, and a lockable damper blade for volume flow rate balancing simplifies commissioning.
AIRNAMIC-Q
mm | mm | m² | |
AIRNAMIC-R
mm | mm | m² | |
Installation and commissioning
These are only schematic diagrams to illustrate installation details.
Open, 0°
Volume flow rate balancing
When several diffusers are connected to just one volume flow controller, it may be necessary to balance the volume flow rates.
Principal dimensions
ØD [mm]
Outer diameter of the spigot
ØD₁ [mm]
Outer diameter of a circular diffuser face
ØD₂ [mm]
Diameter of a circular diffuser face style
ØD₃ [mm]
Diameter of a circular plenum box
□Q₁ [mm]
Outer diameter of a square diffuser face
□Q₂ [mm]
Dimensions of a square diffuser face style
□Q₃ [mm]
Dimensions of a square plenum box
H₁ [mm]
Distance (height) from the lower edge of the suspended ceiling to the lower edge of the diffuser face
H₂ [mm]
Height of a ceiling diffuser, from the lower edge of the suspended ceiling to the upper edge of the spigot
H₃ [mm]
Height of a ceiling diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box or of the spigot
A [mm]
Position of the spigot, defined by the distance of the spigot centre line to the lower edge of the suspended ceiling
C [mm]
Length of the spigot
m [kg]
Weight
Nomenclature
LWA [dB(A)]
A-weighted sound power level of air-regenerated noise
V [m³/h] and [l/s]
Volume flow rate
Δtz [K]
Supply air to room air temperature difference, i.e. supply air temperature minus room temperature
Δpt [Pa]
Total differential pressure
Aeff [m²]
Effective air discharge area
All sound power levels are based on 1 pW.
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Type
Construction style
System
Nominal size [mm]
Surface
