AHD - Grille

Exhaust grille

Aesthetic in design.

  • Large free area, high airflow rates with minimal pressure drop
  • Reduced visibility through grille due to shaped horizontal vanes
  • Sizes adapted to suit modular 600x600 suspended ceilings
  • Detachable grille allows cleaning of the grille and ductwork
  • Spring clip fastening

Product Models and Accessories

  • Airflow adjustment damper
  • Installation frame
  • Balancing plenum with measurement and adjustment functions
  • Sound attenuation for plenum

The exhaust grille has a large free area. Pressure loss shall remain minimal, even with high exhaust rates.
Non-clogging lightweight design with fixed curved vanes prevent vision through the grille.
The joints of the outer frame are practically invisible.
The grille is either anodised or polyester-painted with a white (RAL 9010) standard colour.
The exhaust can be adapted for modular 600x600mm suspended ceilings.
The grille can be connected to the duct using an installation frame.

Option

The grille can be connected to the duct using a plenum.
The plenum Halton BDR  comprises sound attenuation material made from mineral wool.
The balancing plenum Halton PRL comprises sound attenuation material made from polyester fiber with a washable surface or mineral wool.
The airflow measurement and adjustment unit MEM is available as an accessory.
The grille is removable in order to provide access to the measurement and adjustment module in the plenum.

Halton AHD

Exhaust grille with reduced visibility through grille

  • Large free area, high airflow rates with minimal pressure drop.
  • Reduced visibility through grille due to shaped horizontal vanes.
  • Sizes adapted to suit modular 600x600 suspended ceilings.
  • Detachable grille allows cleaning of the grille and ductwork.
  • Spring clip fastening.

Product Models and Accessories

  • Airflow adjustment damper
  • Installation frame
  • Balancing plenum with measurement and adjustment functions
  • Sound attenuation for plenum

Dimensions


 

LxH L1 L2 H1 H2
200x100 226 176 126 76
250x100 276 226 126 76
300x150 326 276 176 126
200x200 226 176 226 176
400x200 426 376 226 176
300x300 326 276 326 276
600x300 626 576 326 276
400x400 426 376 426 376
600x400 626 576 426 376
800x400 826 776 426 376
1000x400 1026 976 426 376
1200x400 1226 1176 426 376
500x500 526 476 526 476
570x270 296 546 596 246
570x570 596 546 596 546

Square grilles have symmetrically inverted vanes.

With OD/AHD airflow adjustment damper total depth is 32 mm + 45 mm.

The free area of the Halton AHD grille is 75 %.

Special dimensions

In addition to these standard sizes, other dimensions can be specially ordered. The maximum size is 1500x600 mm (LxH).

Material

 Part  Material  Finishing  Note
 Frame  Aluminium  Anodised or
 Polyester-painted,
 White (RAL 9010/50%) gloss or
 Mill finished
 Special colours
 and
 epoxy-painting
 (100 %) available
 Fixed vanes  Aluminium  Anodised or
 Polyester-painted,
 White (RAL 9010/50%) gloss or
 Mill finished
 Special colours
 and
 epoxy-painting
 (100 %) available
 Installation frame  Galvanised steel    
 Plenum box / spigot  Galvanised steel    

Accessories

 Accessory Code  Description
 Balancing plenum PRL  For balancing & equalising the airflow
 and attenuating the duct noise
 Plenum BDR  Plenum for duct connection
 (with or without attenuation material)
 Airflow measurement and
 adjustment unit
MEM  For exhaust installation
 Sound attenuation IN  Mineral wool for the BDR plenum box.
 Polyester fibre or mineral wool for
 the PRL plenum box.
 Flow adjustment damper OD  Aluminium opposite blade damper
 for airflow adjustment
 Installation frame IF  For installation without plenum
 Visible screw fastening SF  Screw fastening
 Concealed screw fastening CC  Option / Concealed screw fastening

Function

Air is exhausted from the space with a low pressure drop.
Wall or ceiling installation.

Installation

The grille is connected either directly to the duct using the installation frame IF/AHD or a Halton PRL balancing plenum or a Halton BDR plenum.


       Installation frame, IF           Balancing plenum, PRL        Plenum, BDR

Clips fastening (standard)


The grilles are supplied with spring fastening as standard.
Clips fastening is used with installation frame (IF) or balancing plenums (Halton PRL and Halton BDR).

Concealed screw fastening


Concealed screw fastening is possible when the grille is installed with an IF installation frame or with a Halton BDR plenum box.
In such cases, small holes are factory-made in the Halton BDR in front of each concealed screw.
Concealed screw fastening is not possible with the Halton PRL balancing plenum.

For ceiling installation we recommend the use of concealed screw fastening.

The size of the installation holes is LxH with an installation frame and (L-5)x(H-5) without an installation frame.

Visible screw fastening


For ceiling installation, we recommend the use of visible screw fastening. Auto screws, 4.2x25 (bevel headed screw) are supplied.

Adjustment

In order to enable adjustment and measurement of the airflow rate it is recommended that you connect the diffuser to the Halton BDR or the Halton PRL balancing plenum equipped with the MEM module.

The airflow rate can only be adjusted and measured when the grille is connected to the Halton BDR or Halton PRL plenum.
Define the exhaust airflow rate by measuring the pressure difference between the measurement tap on the Halton PRL or Halton BDR balancing plenum and the room air. The corresponding airflow rate is calculated using the formula below.

Adjust the airflow rate by turning the control spindle of the MEM.

The k-factor for installations with different safety distances
(D= duct diameter)

Halton BDR

D >6xD min 3xD
100 6 7
125 10 12
160 19 22
200 28 32
250 49 51
315 77 83

 

Airflow adjustment damper OD/AHD

The airflow rate is adjusted by turning the damper blades behind the grille with a screwdriver. The measurement is performed when the grille is installed.

Servicing

Remove the grille by unscrewing the fixing screws.

Clean the parts by wiping them with a damp cloth.
Push the grille back into place and screw in the fixing screws.

Option:
With balancing plenum Halton BDR + MEM

Remove the measurement and adjustment module by gently pulling the shaft (not the control spindle).
Wipe the parts with a damp cloth, instead of immersing in water.
Reassemble the measurement and adjustment module by pushing the shaft until the module meets the stopper.
Push the grille back into place and screw in the fixing screws.

Specification

The exhaust grille has a large free area. Pressure loss shall remain minimal, even with high exhaust rates.
Non-clogging lightweight design with fixed curved vanes prevent vision through the grille.
The joints of the outer frame are practically invisible.
The grille is either anodised or polyester-painted with a white (RAL 9010) standard colour.
The exhaust can be adapted for modular 600x600mm suspended ceilings.
The grille can be connected to the duct using an installation frame.

Option

The grille can be connected to the duct using a plenum.
The plenum Halton BDR  comprises sound attenuation material made from mineral wool.
The balancing plenum Halton PRL comprises sound attenuation material made from polyester fiber with a washable surface or mineral wool.
The airflow measurement and adjustment unit MEM is available as an accessory.
The grille is removable in order to provide access to the measurement and adjustment module in the plenum.

Order Code

AHD-L-H

L = Length
 
    200, +1,.., 1500

H = Height
      100, +1,.., 670

Other options and accessories

VA = Orientation of vanes
      
    SD      Same direction 
          IV        Symmetric inverted vanes

FS  = Fastening
    
     CL      Clips
          SF      Screw fastening
          CC     Concealed screw fastening

FI   = Finishing
          AN       Anodised
          MF       Mill finished
          PN       Painted

CO = Colour
          W        White
          X         Special colour
          N         No color

ZT = Tailored product
          N          No
          Y          Yes

Sub products

         BDR      Plenum
         PRL       Plenum
         IF          Installation frame
         OD        Opposed blade damper (Grilles)

Code example

          AHD-200-100, FS=CL, FI=AN, CO=N, ZT=N

Downloads & Media

Halton AHD - ru
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Language
Russian (Russia)
Size
860.4 kB
Halton AHD - nl
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Dutch (Netherlands)
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838.5 kB
Halton AHD - gb
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English (United Kingdom)
Size
838.4 kB
Halton AHD - se
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Swedish (Sweden)
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839.3 kB
Halton AHD - fi
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Finnish (Finland)
Size
838.4 kB
Halton AHD - fr
Type
Datasheet
Language
French (France)
Size
1.0 MB