Halton ALU – Universal grille

Overview

• Horizontal air supply, also suitable for exhaust
• Fixed vanes, stable throw pattern with no deflection
• Aluminium design with elegant appearance
• Detachable grille allows cleaning of the grille and ductwork
• Continuous grilles available with modular design

Accessories

• Airflow adjustment damper
• Plenum options with measurement and adjustment functions
• Installation frame

Dimensions

With flow control damper OD/ALU total depth is 35 mm + 45 mm.
The free area of the Halton ALU grille is 65 %.

Special dimensions

In addition to standard sizes, other sizes can be specially ordered. The maximum size is 1500×500 mm (LxH).

It is possible to have a continuous grille of modular design when the installation length is greater than 1500 mm. The maximum total length is 20 m.

Material

Accessories

Function

Supply air is supplied without deflection through the vanes into the space mixing with room air in front of the grille.

Wall installation for horizontal supply or ceiling installation for vertical supply.

The grille can also be used as an exhaust unit.

Installation

Size of the installation hole is LxH when an installation frame is used and (L-5) x (H-5) without an installation frame.

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

Installation frame, IF/ALU         Balancing plenum, PRL           Plenum, BDR

Fastening options

Clips, as standard (CL)

The grilles are supplied with clips fastening as standard.
Clips fastening is used with IF/ALU, Halton PRL and Halton BDR.

Concealed screw (CC)

Concealed screw fastening is possible when the grille is installed with an installation frame (IF/ALU) or with a Halton BDR plenum, though not with a Halton PRL balancing plenum. Holes for screws are provided in the Halton BDR.

For ceiling installation concealed screw fastening is recommended.

Visible screw

Visible screw fastening is not possible due to the reduced width of the frame (18 mm).

Adjustment

In order to enable airflow adjustment and measurement of airflow rate it is recommended that you connect the diffuser to the Halton BDR plenum or Halton PRL balancing plenum equipped with the MSM module.
The supply flow rate is determined by using the measurement and adjustment module MSM.
Detach the grille and pass the tubes and control spindle through the grille.
Measure the differential pressure using a manometer. The flow rate is calculated using the formula below.

Adjust the airflow rate by rotating the control spindle until the desired setting is achieved.
Lock the damper position with a screw.
Replace the tubes and spindle in the plenum and replace the grille.

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

Halton BDR

Airflow adjustment damper (OD)

The airflow rate is adjusted by turning the damper blades behind the grille using a screwdriver. The measurement is carried out when grille is installed.

Servicing

Remove the grille by gently pulling the grille from the outer frame and clean the parts by wiping them with a damp cloth.
Push the grille back into place so that the clips lock (or fix by tightening the concealed screws).

Option:
With balancing plenum Halton PRL or Halton BDR + MSM

Remove the measurement and adjustment module by gently pulling the shaft (NB. not the control spindle or measurement tubes!).
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 so that the clips lock.

Specification

The grille has horisontal fixed vanes and a 18 mm wide flat frame, anodized or polyester-painted with a white (RAL 9003) colour.

Option 1

The grille can be connected to the ductwork using a plenum with mineral wool as sound insulation material.

Option 2

The grille can be connected to the ductwork using a balancing plenum, which comprises polyester fibre with a washable surface as sound attenuation material.
The plenum can have an airflow measurement and adjustment unit.
The grille is removable in order to provide access to the measurement and adjustment module in the plenum.

Order code

ALU-L-H; FS-FI-CO-ZT

L = Length (mm)
200, +1, .., 20000

H = Heigth (mm)
50, +1, .., 500

Other options and accessories

FS  = Fastening
CL       Clips
CC       Concealed screw

FI =  Finishing
AN        Anodised
MF        Mill finished
PN        Painted

CO = Colour
SW      Signal white (RAL 9003)
X          Special colour (RAL xxxx)
N          No painting

ZT = Tailored product
N          No
Y          Yes (ETO)

Sub products

BDR        Plenum
PRL        Balancing plenum
IF            Installation frame
OD         Opposed blade damper

Code example

ALU-200-50, FS=CL, FI=AN, CO=N; ZT=N