• Horizontal air supply, suitable also for exhaust
• Adjustable vertical rear vanes, adjustable horizontal front vanes
• Robust steel construction
• Detachable grille enables cleaning of the grille and ductwork

Accessories

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

The grille has adjustable horizontal front vanes and adjustable vertical rear vanes, and an 18 mm wide flat frame, epoxy-painted with a white (RAL 9010) colour.
The frame is made of steel. The vertical vanes are made of steel.
Where the length of the grille is smaller than 600 mm, the horizontal vanes are made of steel.
Where the length of the grille is greater than 600 mm, the horizontal vanes are made of aluminium.
The supply air jet is directable by changing the vane angles of the front and rear vanes.
The grille can be connected to the duct using an installation frame.

Alternative 1

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

Alternative 2

The grille can be connected to the ductwork using a balancing plenum, which comprises sound attenuation material made of mineral wool or polyester fibre with a washable surface.

The plenum comprises an airflow measurement and adjustment unit.
The grille is removable in order to provide access to the measurement and adjustment module in the plenum.

• Dimensions
• Material
• Accessories
• Function
• Installation
• Adjustment
• Servicing
• Specification
• Order Code

Halton WTS - terminated as of 1 October 2018
-> replaced with Halton WDD

Grille

• Horizontal air supply, suitable also for exhaust
• Adjustable vertical rear vanes, adjustable horizontal front vanes
• Robust steel construction
• Detachable grille enables cleaning of the grille and ductwork

Accessories

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

Dimensions ▲

With OD (airflow adjustment damper) total depth is 48 mm + 45 mm.

Special dimensions

In addition to standard sizes, other dimensions are available by special order. The maximum size is 1200 mm x 600 mm (LxH).
The special length and the special height will be a multiple of 50 mm.

Material ▲

Accessories ▲

Function ▲

Supply air is supplied through the horizontal front and vertical rear vanes into the space. The supply air mixes with room air in front of the grille.
The flow pattern can be adjusted by changing the angles of the adjustable vanes.
In wall installations, the recommended distance from the ceiling is 200 mm, when the supply air is directed to the ceiling.
The grille can also be used as an exhaust unit.

Installation ▲

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

Installation frame, IF/WTS              Balancing plenum, PRL         Plenum box, BDR

Clips fastening (standard)

The grilles are delivered with spring fastening as standard.
Spring fastening is used with Halton PRL, Halton BDR and IF/WTS.

Concealed screw fastening

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

Visible screw fastening

For large grilles, we recommend using visible screw fastening. The auto screws, 4.2x25 (bevel headed screw) are supplied.

The dimensions of the installation holes are LxH when an installation frame is used, and (L-5)x(H-5) without installation frame.

Adjustment ▲

In order to enable airflow adjustment and measurement of airflow rate we recommend connecting the grille to a Halton BDR plenum or Halton PRL balancing plenum equipped with the MSM/MEM module.
The supply flow rate is determined by using the measurement and adjustment module MSM and the exhaust flow rate by measuring the static pressure of the plenum.
Detach the grille and pass the tubes and control spindle through the grille.
Measure the differential pressure with 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 into the plenum and replace the grille.

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

Airflow adjustment damper OD

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

Servicing ▲

Remove the grille by gently drawing it out by the frame. Use a screwdriver if necessary.
Clean the parts by wiping them with a damp cloth.
Push the grille back into place until the springs lock (or fix by screwing on the concealed screws).

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

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

Specification ▲

The grille has adjustable horizontal front vanes and adjustable vertical rear vanes, and an 18 mm wide flat frame, epoxy-painted with a white (RAL 9010) colour.
The frame is made of steel. The vertical vanes are made of steel.
Where the length of the grille is smaller than 600 mm, the horizontal vanes are made of steel.
Where the length of the grille is greater than 600 mm, the horizontal vanes are made of aluminium.
The supply air jet is directable by changing the vane angles of the front and rear vanes.
The grille can be connected to the duct using an installation frame.

Alternative 1

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

Alternative 2

The grille can be connected to the ductwork using a balancing plenum, which comprises sound attenuation material made of mineral wool or polyester fibre with a washable surface.

The plenum comprises 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 ▲

WTS-L-H

L = Length
       200, +50, .., 1200

H = Height
       100, +50, .., 600

Other options and Accessories

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

CO = Colour
         W           White (RAL 9010)
         X             Special colour

ZT = Tailored product
         N            No
         Y            Yes

Sub products

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

Code example

             WTS-200-100, FS=CL, CO=W, ZT=N