Lindab CKA Square Perforated Diffuser Instruction Manual
- June 4, 2024
- Lindab
Table of Contents
CKA Square Perforated Diffuser
Instruction Manual
Description
Comdif CKA is a square perforated displacement diffuser for installation
against a wall or column. Behind the perforated front plate, CKA is equipped
with individually adjustable nozzles, making it possible to alter the geometry
of the near zone. The diffuser can be turned and has a circular duct
connection (MF measure), so the diffuser can be connected at the top or
bottom. The diffuser is suitable for the supply of large volumes of moderately
cooled air.
- The diffuser is suitable for the supply of large volumes of air.
- The geometry of the near zone can be adjusted using adjustable nozzles.
- Plinths can be supplied as accessories.
Maintenance
The front plate can be removed from the diffuser, making it possible to clean
the nozzles. The visible parts of the diffuser can be wiped with a damp cloth.
Ordering example
Order – accessories
Plinth: CKAZ – 2 – size
Dimension
Size| A
[mm]| OD
[mm]| H
[mm]| Weight
[kg]
---|---|---|---|---
2010| 300| 200| 980| 11.0
2510| 400| 250| 980| 20.0
3110| 500| 315| 980| 30.0
4015| 500| 400| 1500| 45.0
5020| 800| 500| 2020| 150
6320| 800| 630| 2020| 150
Accessories
Can be supplied with plinth.
Materials and finish
Diffuser: | Galvanised steel |
---|---|
Nozzles: | Black plastic |
Front plate: | 1 mm galvanised steel |
Standard finish: | Powder-coated |
Standard colour: | RAL 9003 or RAL 9010 – white, gloss 30 |
The diffuser is available in other colours. Please contact Lindab’s sales department for further information.
Perforated diffuser – square
Technical data
Recommended maximum volume flow.
The near zone is given at an under-temperature of -3 K to a maximum terminal
velocity of 0.20 m/s.
Conversion to other terminal velocities – see table 1, correction of the near
zone for -3 K and -6 K respectively.
Sound effect level
Sound effect level LW [dB] = LWA + Kok
Centre frequency Hz
Size| 63| 125| 250| 500| 1K| 2K| 4K|
8K
---|---|---|---|---|---|---|---|---
2010| 10| 0| 4| 0| -8| -18| -29| -43
2510| 11| 1| 4| -1| -8| -19| -30| -42
3110| 14| 3| 4| -1| -10| -18| -30| -32
4015| 10| 1| 2| 0| -8| -17| -27| -42
5020| 7| 3| 2| 0| -6| -16| -19| -17
6320| 7| 3| 2| 0| -6| -16| -19| -17
Sound attenuation
Sound attenuation ΔL [dB] including end reflection.
Centre frequency Hz
Size| 63| 125| 250| 500| 1K| 2K| 4K|
8K
---|---|---|---|---|---|---|---|---
2010| 12| 8| 4| 2| 1| 1| 1| 1
2510| 10| 6| 6| 4| 2| 2| 4| 3
3110| 10| 7| 3| 1| 2| 1| 2| 1
4015| 9| 6| 1| 1| 1| 1| 1| 1
5020| 6| 4| 1| 1| 1| 1| 1| 1
6320| 5| 3| 1| 0| 0| 0| 0| 1
Nearline
Table 1
Correction of the near zone (a0.2, b0.2)
Under temperature
Ti – Tr| Maximum velocity
m/s| Mean velocity
m/s| Correction
factor
---|---|---|---
-K3| 0.20
0.25
0.3
0.35
0.40| 0.10
0.12
0.15
0.17
0.20| 1,00
0.80
0.70
0.60
0.50
-6K| 0.20
0.25
0.30
0.35
0.40| 0.10
0.12
0.15
0.17
0.20| 1.20
1,00
0.80
0.70
0.60
Lindab reserves the right to make changes without prior notice
2022-08-17
Documents / Resources
|
Lindab CKA Square Perforated
Diffuser
[pdf] Instruction Manual
CKA, Square Perforated Diffuser, CKA Square Perforated Diffuser, Perforated
Diffuser, Diffuser
---|---
Read User Manual Online (PDF format)
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