00133392_0
AWT-A/825×225


00133392_0

AWT 

Ball impact resistant ventilation grille made of aluminium, with fixed horizontal blades

Ventilation grille with special profiled blades (rectangular cross section)

  • Nominal sizes 325 × 125 – 1225 × 325 mm
  • Volume flow rate range 17 – 950 l/s or 61 – 3420 m³/h
  • Grille face made of aluminium with anodised finish
  • Tested for installation in gymnasiums
  • Front border with countersunk holes, 30 mm wide


Optional equipment and accessories

  • Grille face in RAL CLASSIC colours
  • Installation subframe

Application

Application

  • Type AWT ventilation grille to be used for supply air or extract air
  • For gymnasiums
  • Meets the requirements for impact resistance of DIN 18032, part 3
  • Directed supply air discharge for mixed flow ventilation
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +4 K
  • For installation in walls, sills and rectangular ducts

Special characteristics

  • Fixed blades
  • Countersunk holes

Nominal sizes

  • Nominal length: 325, 425, 525, 625, 825, 1025, 1225 mm
  • Nominal height: 125, 225, 325 mm


Other dimensions upon request

Description

Parts and characteristics

  • Rectangular profile border sections with rounded edges
  • Fixed horizontal blades
  • Factory fitted perimeter seal
  • Vertical centre mullion for nominal lengths over 625 mm

Attachments

  • AG, AS, D, DG: For volume flow rate balancing and for air direction control

Accessories

  • Installation subframe: For the fast and simple installation of ventilation grilles

Construction features

  • Robust blades
  • Front border with countersunk holes

Materials and surfaces

  • Border and blades made of aluminium
  • Border and blades anodised, E6-C-0, natural colour
  • P1: Border and blades powder-coated, RAL CLASSIC colour

Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

  • Maintenance-free as construction and materials are not subject to wear
  • Inspection and cleaning to VDI 6022

Tehnički podaci

Function, Technical data, Quick sizing, Specification text, Order code

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code

Functional description

Ventilation grilles are air terminal devices for the supply air and extract air of ventilation and air conditioning systems. They direct the supply air into the room. Ventilation grilles with adjustable blades allow for adapting the discharge direction to the local conditions. The result is a mixed flow ventilation in comfort zones and industrial zones, with good overall room ventilation.

Induction slows the airflow down, i.e. the airflow velocity decreases as the distance from the grille increases. The distance at which the airflow velocity reaches a certain defined value, e.g. 0.2 m/s, is called throw distance. The supply air jet from wall grilles that are installed near the ceiling achieves a larger throw distance than a free jet (from a grille that is not installed near the ceiling). Single grilles, groups of grilles and continuous horizontal runs all achieve different throw distances.

In cooling mode it is necessary to take account of the jet deviation towards the occupied zone, which increases as the supply air to room air temperature difference increases and the discharge velocity decreases. In heating mode the supply air jet deviates towards the ceiling. This has no negative effect on the airflow velocity in the occupied zone, but it may affect the complete ventilation of the room.

Nominal sizes

325 × 125 to 1225 × 325 mm

Minimum volume flow rate

17 – 275 l/s or 61 – 990 m³/h

Maximum volume flow rate, with LWA max. 40 dB(A) without attachments

95 – 950 l/s or 342 – 3420 m³/h

Supply air to room air temperature difference

–12 to +4 K

Volume flow rates apply to supply air


Geometric free area

H L [mm]
H 325 425 525 625 825 1025 1225
H Ageo
mm

125

0.013

0.018

0.023

0.028

0.037

0.047

0.057

225

0.031

0.042

0.054

0.065

0.087

0.109

0.132

325

 

0.066

0.084

0.102

0.136

0.171

0.206


Effective air discharge area (supply air)

H L [mm]
H 325 425 525 625 825 1025 1225
H Aeff
mm

125

0.015

0.020

0.025

0.031

0.040

0.050

0.060

225

0.031

0.040

0.050

0.060

0.078

0.097

0.116

325


0.060

0.073

0.086

0.116

0.152

0.174


Effective area of extract air grille

H L [mm]
H 325 425 525 625 825 1025 1225
H Aeff
mm

125

0.011

0.015

0.018

0.023

0.029

0.036

0.043

225

0.023

0.029

0.036

0.043

0.057

0.071

0.078

325


0.043

0.052

0.063

0.083

0.104

0.122


AWT, volume flow rate ranges 00150573_0

× LWA = 40 dB(A) with unrestricted airflow+ LWA = 40 dB(A) with airflow restricted by 50 %

Ball impact resistant ventilation grilles, rectangular, made of aluminium, for supply and extract air. Rectangular profile border sections with rounded edges Preferably for wall and sill installation but also suitable for rectangular ducts.

Ready-to-install component which consists of a border and fixed horizontal blades.

Countersunk holes for fixing the grille to the installation surface.

Meets the requirements of DIN 18032, part 3.

Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Special characteristics

  • Fixed blades
  • Countersunk holes

Materials and surfaces

  • Border and blades made of aluminium
  • Border and blades anodised, E6-C-0, natural colour
  • P1: Border and blades powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 325 × 125 to 1225 × 325 mm
  • Minimum volume flow rate (supply air): 17 – 275 l/s or 61 – 990 m³/h
  • Maximum volume flow rate (supply air), at LWA max. 40 dB(A) without attachments: 95 – 950 l/s or 342 – 3420 m³/h
  • Supply air to room air temperature difference: –12 to +4 K

Sizing data

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

00134964_0

 Type
AWT       Single grille

 Attachments
A       Without (grille face only)
AG       Damper unit, opposed action blades
D       Air direction control, blades installed at 90° to the front blades, independently adjustable
DG       D combined with AG

 Nominal size [mm]
       L × H

 

 Installation subframe
       No entry: none
A1       With

 Exposed surface
       No entry: anodised, E6-C-0, natural colour
P1       Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

Order example: AWT-AG/625×225/A1

Attachments

Damper unit, opposed action blades

Nominal size

625 × 225 mm

Installation subframe

With installation subframe

Exposed surface

Anodised, E6-C-0, natural colour


 

Dimensions and weight, Product details

  • Dimensions and weight
  • Product details
AT, 30 mm wide front border 00204880_0
L Nominal length Vertical centre mullion if L > 625 mm
H Nominal height


The weight table shows the available nominal sizes

AWT

H L [mm]
H 325 425 525 625 825 1025 1225
H m
mm kg

125

1.3

1.6

2.0

2.3

3.0

3.6

4.3

225

1.9

2.4

2.9

3.4

4.4

5.4

6.4

325


3.2

3.8

4.5

5.8

7.1

8.5

Weights apply to ventilation grilles without attachments


Installation examples, Installation details, Commissioning, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Commissioning
  • Basic information and nomenclature
Wall installation 00153790_0

Nominal length over 625 mm: with vertical centre mullion

Ventilation grille with screw fixing 00151457_0
① Ventilation grille
② Fixing screw (by others)


Installation and commissioning

  • Installation preferably in walls, sills and rectangular ducts
  • Installation with installation subframe is recommended
  • If no installation subframe is used, the border should be fixed with screws


These are only schematic diagrams to illustrate installation details.

Volume flow rate balancing

When several ventilation grilles are installed on the same duct, it may be necessary to balance the volume flow rates.

  • AG: Damper unit with opposed action blades, adjustable, secured with a locking screw
  • AS: Damper unit with hit and miss damper, adjustable, secured with a locking screw

Air pattern

  • Adjustable blades: Set the air control blades individually or together and depending on the local conditions
  • D, DG: Air control blades, fitted at 90° to the front blades, can be adapted to the local conditions

Principal dimensions

L [mm]

Nominal length of the ventilation grille

H [mm]

Nominal height of the ventilation grille

m [kg]

Weight

Nomenclature

LWA [dB(A)]

Sound power level of the air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δpt [Pa]

Total differential pressure

lS [m]

Distance from single grille or horizontal run section (throw distance)

Preuzimanja

informacije o proizvodima

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Tu smo za vas

Navedite svoju poruku i vrstu zahtjeva
Tel.: +385 1 61 55 401 | +385 1 61 58 598

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Polja označena s (*) su obvezna polja.

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Zahvaljujemo na vašoj poruci!

Vaša je poruka poslana i ubrzo će biti obrađena.
Naš odjel za servisne zahtjeve što skorije će vas kontaktirati.
Za opća pitanja u vezi s proizvodima ili uslugama možete i nazvati:
Tel.: +385 1 61 55 401 | Faks: +385 1 61 58 598