CKD

Circular jet diffuser for supply air

Diffused or concentrated spread pattern
Cone unit adjustable through 360°
Possible to motor control the supply air angle ± 25 °
Suitable for heating or cooling
Can be used together with ALS commissioning box
Standard colour White RAL 9003
- 5 alternative standard colours
- Other colours upon request

Calculate with your requirements

The CKD is a circular multi-cone jet diffuser for ceiling or wall mounting. It can handle extremely large air flows at low sound levels. It is suitable for constant or variable air flow. Can be supplied at under- or over-temperatures and both horizontal and vertical spread patterns are possible. Suitable for both comfort and industrial premises.

Technical description

Design

The diffuser consists of an outer cylinder with a rubber seal on the connection spigot and an aerodynamically shaped multi-cone assembly, which enable either a concentrated or diffused spread pattern. The multi-cone assembly is suspended in the outer cylinder and can be rotated through 360°. One end of the multi-cone assembly has straight pipes, which enable the supply air to enter the room with a higher impulse and consequently, reach longer throws. This is called a concentrated spread pattern. CKD is also available in a motorised version.

Material and surface treatment

The outer cylinder is manufactured in galvanised sheet steel. The cone assembly is manufactured in sheet steel. The outer cylinder is unpainted whereas the cone assembly is painted on all surfaces and interior.

Standard colour:
- White semi-gloss, lustre 40, RAL 9003/NCS S 0500-N
Alternative standard colours:
- Silver gloss, lustre 80, RAL 9006
- Grey aluminium gloss, lustre 80, RAL 9007
- Blanc semi-brillant, lustre 40, RAL 9010
- Black semi-gloss, lustre 35, RAL 9005
- Grey semi-gloss, lustre 30, RAL 7037
Non-painted finish and other colours available on request.

AIR FLOW - SOUND PRESSURE ROOM (Lp10A) *)
CKD Size		25 dB(A)		30 dB(A)		35 dB(A)
CKD Size		l/s	m3/h	l/s	m3/h	l/s	m3/h
200		58	209	65	234	72	259
250		82	295	95	342	115	414
315		160	575	180	648	210	756
400		225	810	260	936	300	1080
500		350	1260	400	1280	450	1620

CKD Size	ALS Size	25 dB(A)		30 dB(A)		35 dB(A)
CKD Size	ALS Size	l/s	m3/h	l/s	m3/h	l/s	m3/h
200	160-200	58	209	70	252	85	306
250	200-250	85	306	100	360	125	450
315	250-315	130	468	160	575	190	684
400	315-400	210	756	245	882	290	1044
Data applies to the combination of CKD + ALS commissioning box at total pressure drop of 50 Pa and diffused spread pattern. *) Lp10A = Sound pressure incl. A-filter with 4 dB room attenuation and 10 m2 room absorption area.

ALS

Commissioning box for air diffusers

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Include Accessory documents

Document	Article	Document type	Date
Building product declaration (pdf 104.55kB)	CKDa	Quality	24/05/2018
CE-Declaration (pdf 651.98kB)	CKDa	Quality	24/05/2018
Installation, commissioning, maintenance (pdf 609.06kB)	CKDa	IOM Manual	26/05/2021
Circular jet diffuser (pdf 945.26kB)	CKDa	Technical catalogue	30/11/2021
Building product declaration (pdf 40.33kB)	CKDa	Quality	24/05/2018
Product description - Air diffusers & dampers (pdf 249.19kB)	Air diffusers & dampers	IOM Manual	19/10/2023
Overview - Air diffusers (pdf 3.34MB)	Air diffusers	Brochure	12/07/2022
Nano certificate (pdf 71.51kB)	Air diffusers	Quality	03/10/2023
Commissioning guide - Air diffusers, VAV/CAV- & Commissioning dampers (pdf 7.75MB)	Air diffusers, VAV/CAV- & Commissioning dampers	IOM Manual	19/08/2024

Whilst we have made every effort to ensure information on this website is up to date and accurate, the technical specification and availability of products/services listed on this website may vary market to market and are subject to change without notice. Please contact your regional representative or visit your local website for further details.