DTR - Perforated diffuser

Square perforated diffuser for horizontal air supply

Aesthetic design that is ideal for low spaces.

  • Available for supply and exhaust
  • Designed for integrated installation with suspended ceilings.
  • Installed either directly to the ductwork or to the balancing plenum.
  • Low unit height.
  • Front plates are available in nominal sizes 300x300 mm, 450x450 mm and 600x600 mm.
  • Size 600x600 is adapted for installation in standard T-bar suspended ceiling (modular 600x600 mm).
    Other suspended ceiling integration options available.
  • Detachable front panel enables cleaning of the diffuser and ductwork.
  • Circular duct connection with rubber gasket.

Accessories

  • Deflector for the direction of flow pattern.
  • Balancing plenum with measurement and adjustment functions.

The diffuser shall be made of painted steel with a white (RAL 9010) colour.
The flow pattern of the diffuser shall be adjustable in up to three directions using deflector panels.

Option 1:  No balancing plenum

The diffuser shall have a galvanised steel casing with a spigot with integral gasket for connection to circular duct.
The diffuser shall have a detachable perforated front panel that provides access to the duct.

Option 2:  With balancing plenum

The diffuser shall be connected to a balancing plenum equipped with a measurement and adjustment module.
The diffuser shall have a detachable perforated front panel to provide access to the measurement and adjustment module in the plenum.
The balancing plenum shall have a spigot with integral gasket for air-tight duct connection.
The balancing plenum shall comprise sound attenuation material made of polyester fiber with a washable surface.

Halton DTR

Square perforated diffuser

  • Available for supply and exhaust
  • Designed for integrated installation with suspended ceilings.
  • Installed either directly to the ductwork or to the balancing plenum.
  • Low unit height.
  • Front plates are available in nominal sizes 300x300 mm, 450x450 mm and 600x600 mm.
  • Size 600x600 is adapted for installation in standard T-bar suspended ceiling (modular 600x600 mm).
    Other suspended ceiling integration options available.
  • Detachable front panel enables cleaning of the diffuser and ductwork.
  • Circular duct connection with rubber gasket.

Accessories

  • Deflector panels provide control flow pattern direction.
  • Balancing plenum with measurement and adjustment functions

Dimensions

NS W W1 H ØD
100-300 300 259 77 99
100-600 595 259 77 99
125-300 300 259 77 124
125-600 595 259 77 124
160-450 452 411 97 159
160-600 595 411 97 159
200-450 452 411 97 199
200-600 595 554 97 199
250-600 595 554 97 249
315-600 595 554 97 314

NS = connection size - diffuser size
 

Weight

NS Weight
100-300 1.75
125-300 1.73
160-450 3.37
200-450 3.37
200-600 5.20
250-600 5.21
315-600 5.07

NS = connection size - diffuser size

Material

  Part   Material   Note
  Casing   Steel  
  Front panel   Perforated steel  
  Deflector panels   Steel  
  Coupling sleeve   Galvanised steel  
  Gasket   Rubber compound  
  Finishing   Painted
  White RAL 9010
  Special colours available

Accessories

 Accessory

 Code

 Description

 Balancing plenums

 TRI

 Aesthetical connection plenum
 with airflow balancing  and
 noise attenuation (Fig.1.)

 TRH

 Basic connection plenum
 with airflow  balancing and
 noise attenuation (Fig.2.)

 Deflection panels  DP  Set of deflector panels for
 selection of flow  pattern
 to 1,2 or 3 directions (Fig.3.)


 
Fig.1. Halton TRI                                               Fig.2. Halton TRH


Fig.3.  Deflection panels option

Function

  • Air is supplied horizontally into the space through the front panel of the diffuser
  • The supply air can be deflected in different directions (1,2,3,4) with a recommended maximum air temperature difference between supply and room air as follows:
    •   8°C for 3 and 4 direction air supply
    •   6°C for 1 and 2 direction air supply
  • Halton DTR can also be used as an exhaust unit.

Installation

The diffuser is connected either directly to the duct by screwing or by riveting or alternatively to the Halton TRI balancing plenum.
Direct the flow pattern in the desired directions by installing a deflector panel on the perforated front panel.

A minimum safety distance upstream of the diffuser of 3xD is recommended.

In an exhaust application neither a deflector panel or a deflector plate is used.
 

Installation with plenum Halton TRI

The collar of Halton TRI plenum can be installed either internally in the plenum or externally on the bottom of the plenum. The height of the unit is presented in the table below for the external installation. When the collar sleeve is installed internally, the total height H1 is reduced by 60 mm.

The technical performance for the combination of supply air diffuser and Halton TRI plenum is presented separately for the two different installations.

DTR ØD1  TRI  W2  H1 
100-300  100 TRI-100-100 270 293-343
125-300  100 TRI-100-125 270 293-343
160-450  125 TRI-125-160 425 343-393
200-450  160 TRI-160-200 425 383-433
200-600  160 TRI-160-200 565 383-433
250-600  200 TRI-200-250 565 433-483
315-600  250 TRI-250-315 565 497-547

Adjustment

It is not possible to adjust airflow in the Halton DTR itself.
In order to enable airflow adjustment and measurement of airflow rate it is recommended that the diffuser is connected to the Halton TRI balancing plenum. The supply flow rate is determined by using the MSM measurement and adjustment module.

Open the front panel and pass the tubes and control spindle through the diffuser front plate.
Replace the front plate.

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 diffuser front panel.

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

TRI/S >8XD  min 3XD 
100  6.0 7.5
125  9.9 12.6
160  16.9 21.9
200  28.3 31.0
250  47.9 51.5
315  78.6 -

Servicing

Option with balancing plenum

Remove the measurement and adjustment module by gently pulling the shaft; (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 front panel back into place so that the springs lock.

Detach the front panel by gently pulling it down and letting it balance on the hinges. Clean the parts by wiping them with a damp cloth. Reattach the front panel by swinging it up and pushing it until the springs lock.

Specification

The diffuser shall be made of painted steel with a white (RAL 9010) colour.
The flow pattern of the diffuser shall be adjustable in up to three directions using deflector panels.

Option 1; no balancing plenum

The diffuser shall have a galvanised steel casing with a spigot with integral gasket for connection to circular duct.
The diffuser shall have a detachable perforated front panel that provides access to the duct.

Option 2; option with balancing plenum

The diffuser shall be connected to a balancing plenum equipped with a measurement and adjustment module.
The diffuser shall have a detachable perforated front panel to provide access to the measurement and adjustment module in the plenum.
The balancing plenum shall have a spigot with integral gasket for air-tight duct connection.
The balancing plenum shall comprise sound attenuation material made of polyester fiber with a washable surface.

Order Code

DTR-D-A

D = Connection size
  
   100, 125, 160, 200, 250, 315

A = Diffuser size
      100, 125, 160, 200, 250, 315
 

Other options and accessories 

WS = Width of suspended ceiling tile
         NA      Not assigned
         600      600x600 (if A=300,450)

CO = Colour
     
   W       White
          X        Special colour

ZT = Tailored product
        N          No
        Y          Yes
 

Sub products

       TRI       Plenum
       TRH      Plenum
       DP       Deflection panel
 

Code example

        DTR-100-300, WS=NA,CO=W, ZT=N

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