DAC - Conical diffuser

Square diffuser for ceiling installations

Ideal for high spaces.

  • Diffuser adapted for variable air flow
  • Supply air pattern in four directions, number of slots alternatively 1-3
  • Three models; supply model, exhaust model and integrated supply and exhaust model
  • Special profile diffuser blade creates a Coanda effect which enables wide range of air flow rates  
  • Installation to modular ceilings 600 x 600 or 675 x 675 mm
  • Circular duct connection with rubber gaskets

Product models and Accessories

  • Openable version for exhaust with filtering option
  • Installation on Fineline profiles
  • Plenum with horizontal or vertical duct connection (rubber gasket on spigot)

Halton-brand ceiling diffuser, type DAC, with one to three slots, suitable for variable air flow.

Extruded aluminium blade profile with a distribution angle of 30° (specially designed to retain a Coanda effect with a wide range of airflow rates).
Extruded aluminium external frame.

RAL 9010 finish (or another RAL value as an option).

Aesthetic uniformity whether used in supply or exhaust mode.

Adjustability due to the possibility of positioning a seal on each of the slots.

Diffuser delivery with a horizontal (or vertical) plenum with spigots with a 200, 250 or 315 mm diameter, depending on air flow.
Integration into modular ceilings of 600 x 600 or 675 x 675 mm, on T-frames or Fineline profiles.

Halton DAC

Rectangular diffuser

  • Diffuser adapted for variable air flow
  • Supply air pattern in four directions, number of slots alternatively 1-3
  • Three models; supply model, exhaust model and integrated supply and exhaust model
  • Special profile diffuser blade creates a Coanda effect which enables wide range of air flow rates 
  • Installation to modular ceilings 600 x 600 or 675 x 675 mm
  • Circular duct connection with rubber gaskets

Product and accessories

  • Openable version for exhaust with filtering option
  • Installation on Fineline profiles
  • Plenum with horizontal or vertical duct connection (rubber gasket on spigot)

Dimensions

DAC only

 DAC mounted on PDA plenums : horizontal and vertical connection

 

NS L
600x600 595
675x675 670

Material

 Part  Material  Finishing  Note
 Front Plate  Aluminium  Epoxy-polyester painting,
 RAL9010/50% gloss
 Special colours available
 Plenum  Galvanised steel    Horisontal or vertical
 duct connection
 Spigot  Galvanised steel    
 Gasket  Rubber compound    

Accessories

 Accessory Code  Description  Note
 Plenum PDA/H-S  Plenum with horisontal
 connection:
 Supply  application
 Insulation with mineral wool and airflow adjustment
 with MSM available for this configuration
 Plenum PDA/V-S  Plenum with vertical connection:
 Supply application
 Insulation with mineral wool and airflow adjustment
 with MSM available for this configuration
 Plenum PDA/H-R  Plenum with horisontal
 connection:
 Exhaust application
 Insulation with mineral wool available
 for this configuration
 Plenum PDA/V-R  Plenum with vertical connection:
 Exhaust application
 Insulation with mineral wool available
 for this configuration
 Plenum PDA/H-F  Plenum with horisontal
 connection:
 Exhaust application with filter
 Insulation with mineral wool available
 for this configuration
 Plenum PDA/V-F  Plenum with vertical connection:
 Exhaust application with filter
 Insulation with mineral wool available
 for this configuration

Function

Air is supplied to the room horizontally though (one to three) slots in the unit's front panel.
The vane profile, with its low discharge angle of diffusion, ensures that the air jet spreads along the ceiling and mixes smoothly with the ambient air when it falls down in the occupied space (Coanda effect). This provides excellent comfort conditions in the occupied zones, with a wide range of airflow rates.

Installation

INSTALLATION

  1. Plenum
  2. Spigot
  3. Clips
  4. Front plate

Plenum installation
The plenum is installed into the suspended ceiling with M8 drop rods (not supplied in the delivery) and connected to the ductwork with a spigot.
When equipped with a measurement and adjustment module, the recommended safety distance upstream of the device is at least 3xD, in order to ensure a reliable airflow rate measurement.
The units control spindle must not be excessively bent.

Diffuser installation
For integral diffusers with 600x600  tiles, the diffuser is attached to the plenum via clips.
For integral diffusers with 675x675 tiles, the diffuser is attached to the plenum with screws or pop rivets (not supplied).
 

Adjustment

ADJUSTMENT 

To aid in adjusting and measuring the air flow rate, it is recommended that the diffuser is connected to a plenum equipped with a MSM.
The supply air flow is determined by measuring the pressure difference with a measurement module.
Measure the differential pressure with a manometer. The air flow rate is calculated according to the following formula:
 

where:

∆Pm is the measured pressure (Pa)
is a factor given as a function of mounting and diameter
Qv is the airflow rate

 

The k factor for installations with different safety distances (distance of other items from the MSM):

  Safety distance
Sigot Diameter > 6XD min 3XD
200 28 32
250 49 51
315 78 -


Adjust the air flow rate by rotating the control spindle until the desired setting is achieved.
Lock the damper in position with a screw.
Replace the tubes and spindle in the plenum, and return the diffuser to its position.


 

Servicing

Specification

Halton-brand ceiling diffuser, type DAC, with one to three slots, suitable for variable air flow.

Extruded aluminium blade profile with a distribution angle of 30° (specially designed to retain a Coanda effect with a wide range of airflow rates).
Extruded aluminium external frame.

RAL 9010 finish (or another RAL value as an option).

Aesthetic uniformity whether used in supply or exhaust mode.

Adjustability due to the possibility of positioning a seal on each of the slots.

Diffuser delivery with a horizontal (or vertical) plenum with spigots with a 200, 250 or 315 mm diameter, depending on air flow.
Integration into modular ceilings of 600 x 600 or 675 x 675 mm, on T-frames or Fineline profiles.

Special Application

SPECIAL APPLICATION

DAC/SR : DAC diffuser combining side supply and central exhaust

  • DAC diffuser is combining side supply and central exhaust.
  • Supply in four directions (two slots diffuser) with good coanda effect.
  • The central exhaust part is equipped with a filter.
  • A push/pull type opening closing make the change of the filter very easy.
  • Installation flush with a suspended modular ceiling 600x600 or 675x675

 

Dimensions

Nominal Dimensions L
600x600 595
675x675 670

 

Function

Air is suplied though the slots of the diffuser. The vane profile ensure an excellent coanda effect. This provide excellent comfort conditions in the occupied zones, with a wide range of airflows.  The air is exhaust through the perforated central part, and is filtered thanks to a G3 media (optionnal).

 

Specifications

  • Halton-brand ceiling diffuser, type DAC
  • Extruded aluminium blade profile with a distribution angle of 30° (specially designed to retain a Coanda effect with a wide range of air flow
  • rates).
  • Extruded aluminium external frame.
  • RAL 9010 finish (or another RAL value as an option).
  • Diffuser delivery installed on horizontal plenum (supply connection, exhaust connection).
  • Push–pull-type opening/closing system for the central part of the diffuser.
  • Diffuser supplied with its G3 filter.
  • Diffuser integration into modular ceilings of 600 x 600 or 675 x 675 mm, on T-frames or Fineline profiles.

Product code

PRODUCT CODE

DAC/S-C-XXX
 

S = Outlook
    D  Design Diffuser (without central plate)
    A  Diffuser with central plate

C = Model
   S Supply
   R Return
   F Filtration (opening front)   

 XXX = Dimensions & Number of slots
   601 (false ceiling dimensions : 600x600 ; 1 slot)
   602 (false ceiling dimensions : 600x600 ; 2 slots)
   603 (false ceiling dimensions : 600x600 ; 3 slots)
   701 (false ceiling dimensions : 675x675 ; 1 slots)
   702 (false ceiling dimensions : 675x675 ; 2 slots)
   703 (false ceiling dimensions : 675x675 ; 3 slots)
    


Specifics and accessories

   CO = Colour
    W  White
    X  Special colour
 

Code example

   DAC/A-S-602 CO=W
 

Sub products

   PDA  Plenum for DAC

Downloads & Media

Halton DAC - fr
Type
Datasheet
Language
French (France)
Size
1.2 MB
Halton DAC - ru
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Datasheet
Language
Russian (Russia)
Size
1.0 MB
Halton DAC - se
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Swedish (Sweden)
Size
522.9 kB
Halton DAC - gb
Type
Datasheet
Language
English (United Kingdom)
Size
1.0 MB