VZ-AR

Circular duct diffuser for supply- or extract air

Duct diffuser in a circular design
Meets high decorative requirements for suspended installations
Mounted horizontally as standard, but can also be mounted vertically
High flexibility with the adjustable air deflectors
Non-painted as standard
Air deflectors in standard colour Jet Black RAL 9005

Design

The VZ‑AR circular duct diffuser is available in a supply- or extract air variant.

VZ-AR for supply air consists of slots equipped with 75 mm air deflectors, featuring rectifier blades and double boomerang profiles, each individually adjustable.

In the extract air variant, the diffuser has perforations. The perforations are arranged transverse to the longitudinal axis, with dimensions determined according to the required extract air flow.

Individual duct sections can be connected using plain duct ends with duct joints and rubber seals. Alternatively, versions with METU flanges are available.

The diffuser is intended for suspended installation and meets the highest architectural and ventilation performance requirements.

Functionality

The individually adjustable air deflectors allow all air discharge directions to be set within a 180° range.

Additional configuration options are available through different arrangements of the slot/perforated rows, which can be positioned in random or varied sectors of the duct diffuser's circumference. When multiple duct diffusers are connected in continuous lengths, internal air flow balancing is ensured by an integrated scoop switch.

Material and surface treatment

Duct diffuser

Made of galvanised steel.
Standard colour:
- Non-painted
Alternative standard colours:
- RAL 9010, pure white, gloss 70
- RAL 9003, signal white, gloss 70
- RAL 9006, white aluminium, gloss 70
- RAL 9005, jet black, gloss 70
- RAL 7035, light grey, gloss 70

Slots

Made of extruded aluminium profiles.
Painted in the same colour as the duct diffuser.

Air deflectors

Made of impact-resistant plastic.
Standard colour (similar to):
- RAL 9005, jet black
Alternative standard colours (similar to):
- RAL 9010, pure white
- RAL 9003, signal white
- RAL 9006, white aluminium
- RAL 7035, light grey

Adaptation

Installation, commissioning and maintenance

Specification text

Circular duct diffuser VZ-AR for supply- or extract air, with the following features:

Duct diffuser made of galvanised steel, non-painted.
VZ-AR for supply air consists of slots with 75 mm individually adjustable air deflectors, featuring rectifier blades and double boomerang profiles.
- Slots made of extruded aluminium, painted in the same colour as the duct diffuser.
- Air deflectors made of plastic, standard colour black.
VZ-AR-AL for extract air has perforations arranged transverse to the longitudinal axis.

VZ-AR
Duct length LR (mm)	Perforation length A (mm)	Duct diameter D (mm)	Number of perforation rows	Recommended air flow V
				l/s	m3/h
1490	1200	160 - 800	1	31	112
		160 - 800	2	62	224
		200 - 800	3	93	336
		224 - 800	4	124	448
		224 - 800	5	156	560
		250 - 800	6	187	672
		355 - 800	8	249	896
More sizes and information on the duct dimensions is available in the product sheet.

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