Ceiling diffusers direct the air from air conditioning systems into the room. The resulting airflow induces high levels of indoor air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall indoor ventilation, creating only low turbulence in the occupied zone.
Ceiling diffusers type DLK-AK have fixed blades. Horizontal air discharge is one-way to four-way. The supply air to room air temperature difference range from -10 to +10 K.
Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.
The maximum volume flow rates 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 programme.
DLQ-AK-1, DLQ-AK-2, DLQ-AK-3, DLQ-AK-4 (supply air), sound power level and total differential pressure
NS | qv [l/s] | qv [m³/h] | Damper blade position | |||||
---|---|---|---|---|---|---|---|---|
0° | 45° | 90° | ||||||
Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | |||
300 | 40 | 144 | 10 | 16 | 12 | 19 | 18 | 23 |
65 | 234 | 26 | 31 | 32 | 34 | 47 | 38 | |
95 | 342 | 56 | 42 | 67 | 45 | 101 | 49 | |
120 | 432 | 90 | 50 | 107 | 53 | 161 | 57 | |
400 | 50 | 180 | 4 | <15 | 6 | <15 | 10 | 13 |
105 | 378 | 19 | 28 | 25 | 32 | 42 | 35 | |
160 | 576 | 45 | 41 | 58 | 45 | 99 | 48 | |
215 | 774 | 81 | 50 | 105 | 54 | 178 | 57 | |
500 | 100 | 360 | 5 | 16 | 7 | 19 | 14 | 23 |
180 | 648 | 16 | 32 | 22 | 35 | 46 | 39 | |
260 | 936 | 33 | 43 | 47 | 46 | 97 | 50 | |
340 | 1224 | 57 | 50 | 80 | 53 | 166 | 57 | |
600 | 150 | 540 | 4 | 14 | 7 | 19 | 14 | 23 |
265 | 954 | 14 | 31 | 21 | 36 | 44 | 40 | |
385 | 1386 | 29 | 42 | 44 | 47 | 94 | 51 | |
505 | 1818 | 50 | 50 | 76 | 55 | 161 | 59 | |
625 | 150 | 540 | 4 | 11 | 7 | 16 | 15 | 21 |
265 | 954 | 14 | 28 | 21 | 33 | 46 | 38 | |
385 | 1386 | 29 | 39 | 44 | 44 | 97 | 49 | |
545 | 1962 | 59 | 50 | 88 | 55 | 194 | 60 |
DLQ-AK-2E (supply air), sound power level and total differential pressure
NS | qv [l/s] | qv [m³/h] | Damper blade position | |||||
---|---|---|---|---|---|---|---|---|
0° | 45° | 90° | ||||||
Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | |||
300 | 40 | 144 | 9 | 16 | 11 | 18 | 17 | 22 |
65 | 234 | 24 | 31 | 28 | 33 | 45 | 37 | |
95 | 342 | 50 | 42 | 61 | 44 | 96 | 48 | |
120 | 432 | 80 | 50 | 97 | 52 | 153 | 56 | |
400 | 50 | 180 | 4 | <15 | 6 | 9 | 10 | 13 |
105 | 378 | 19 | 28 | 25 | 31 | 45 | 35 | |
160 | 576 | 45 | 41 | 59 | 44 | 104 | 48 | |
215 | 774 | 82 | 50 | 106 | 53 | 188 | 57 | |
500 | 100 | 360 | 5 | 12 | 7 | 16 | 15 | 20 |
180 | 648 | 16 | 30 | 23 | 34 | 47 | 38 | |
260 | 936 | 34 | 41 | 47 | 45 | 98 | 49 | |
350 | 1260 | 61 | 50 | 86 | 54 | 178 | 58 | |
600 | 150 | 540 | 4 | 11 | 7 | 15 | 13 | 20 |
265 | 954 | 13 | 29 | 21 | 33 | 41 | 38 | |
385 | 1386 | 27 | 41 | 43 | 45 | 87 | 50 | |
515 | 1854 | 48 | 50 | 78 | 54 | 155 | 59 | |
625 | 150 | 540 | 4 | 8 | 7 | 13 | 14 | 17 |
265 | 954 | 13 | 26 | 21 | 31 | 42 | 35 | |
385 | 1386 | 27 | 38 | 43 | 43 | 89 | 47 | |
565 | 2034 | 58 | 50 | 93 | 55 | 193 | 59 |
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.
Ceiling diffusers with square diffuser face. As supply air diffusers in comfort zones. Diffuser face with fixed air control blades for horizontal one-way to four-way supply air discharge. For installation into all types of suspended ceilings. Ready-to-install component, consisting of the diffuser face with fixed air control blades, front border with circumferential seal, plenum box, side entry spigot, and suspension holes. Spigot, suitable for ducts according to EN 1506 or EN 13180. Sound power level of the air-regenerated noise measured according to EN ISO 5135.
Special characteristics
Material and surfaces
Technical data
Sizing data
Air-regenerated noise
DLQ-AK | – | 2 | – | M | – | L | / | 400 | / | P1 - RAL 9016 | / | B |
---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | | | | | ||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 |
No. of sides for air discharge | 3 |
Connection | Plenum box, horizontal connection |
Damper unit for volume flow rate balancing | With |
Nominal size | 600 |
Exposed surface | RAL 9006, white aluminium, gloss level 30% |
Spigot side | A |
Application
Nominal sizes | 300, 400, 500, 600, 625 mm |
Minimum volume flow rate | 40 – 150 l/s or 144 – 540 m³/h |
Maximum volume flow rate, at LWA ≅ 50 dB(A) | 545 – 565 l/s or 1962 – 2034 m³/h |
Supply air to room air temperature difference | -10 bis +10 K |
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