AHD 排风格栅

概览

• 有效截面大, 气流速度高、压降最小
• 水平叶片的形状遮挡视线
• 尺寸适合于模块化的600×600吊顶
• 格栅可拆卸，方便清洁格栅和管道系统
• 弹簧夹紧固件

产品选型和附件

• 气流调整风闸
• 安装框架
• 具有测量和调整功能的平衡静压箱
• 带消声效果静压箱

Dimensions

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 1500×600 mm (LxH).

Material

Accessories

Function

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

Installation

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

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

Fastening options

Clips, as standard (CL)

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 (CC)

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.

Visible screw (SF)

For ceiling installation, we recommend the use of visible screw fastening. Auto screws, 4.2×25 (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

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 9003) 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; VA-FS-FI-CO-ZT

L = Length (mm)
200, +1,.., 1500

H = Height (mm)
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
SW     Signal white (RAL 9003)
X         Special colour (RAL xxxx)
N         No color

ZT = Tailored product
N          No
Y          Yes (ETO)

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