COLIBRI Free

Circular ceiling diffuser with nozzles for suspended installation

Rotatable nozzles
100% flexible distribution pattern
Provision for vertical air diffusion
Swirl function
Substantial induction capacity
Designed for installation in rooms without suspended ceiling
If necessary, the perforated air distribution plate can be dismantled for extract air systems, and rectified easily in connection with installation/commissioning
Easy accessible
Can be supplied in a galvanized design
Standard colour White RAL 9003
- 5 alternative standard colours
- Other colours upon request

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Technical description

Design

The supply air diffuser consists of a circular commissioning box and a removable diffuser face. The commissioning box contains a removable commissioning damper, fixed measurement tapping and sound absorbent insulation covered by a reinforced surface layer, rated to Fire resistance class B-s1,d0 conforming to EN ISO 11925-2. The diffuser face is equipped with aerodynamic, rotatable nozzles.

Material and surface treatment

The diffuser face is made of sheet steel. The commissioning box is made of galvanized sheet steel. The diffuser is finished, internally and externally.

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.

The nozzles are made of plastic (PP-polypropylene).

AIR FLOW - SOUND PRESSURE ROOM (Lp10A) *)
COLIBRI Free Size	25 dB(A)		30 dB(A)		35 dB(A)
COLIBRI Free Size	l/s	m³/h	l/s	m³/h	l/s	m³/h
100	31	112	36	130	44	158
125	48	173	58	209	70	252
160	74	266	89	320	110	396
200	113	407	134	482	160	576
250	130	468	150	540	180	648
315	165	594	195	702	230	828
400	181	652	210	756	250	900
Data presented for an open damper. The product’s full working area in terms of pressure, flow and sound are evident from the sizing diagrams. *) Lp10A = Sound pressure incl. A-filter with 4 dB room attenuation and 10 m² room absorption area.

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Include Accessory documents

Document	Article	Document type	Date
Product description - Air diffusers & dampers (pdf 249.19kB)	Air diffusers & dampers	IOM Manual	19/10/2023
Circular ceiling diffuser with nozzles for suspended installation (pdf 6.75MB)	COLIBRI Free b	Technical catalogue	25/04/2022
Installation, commissioning, maintenance (pdf 7.16MB)	COLIBRI Free b	IOM Manual	25/04/2022
Commissioning guide - Air diffusers, VAV/CAV- & Commissioning dampers (pdf 7.75MB)	Air diffusers, VAV/CAV- & Commissioning dampers	IOM Manual	19/08/2024
Overview - Air diffusers (pdf 3.34MB)	Air diffusers	Brochure	12/07/2022
Nano certificate (pdf 71.51kB)	Air diffusers	Quality	03/10/2023

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