DCS - Modular diffuser

Modular Diffuser

Multi-functional and easy to clean ceiling diffuser with different front panel options, packet with plenum.

  • Available for supply and exhaust
  • Modular construction with five different, interchangeable front panel options suited for modular 600 x 600, 625x625, 675x675 mm ceilings, providing different appearance and performance characteristic 
  • Diffuser adaptation possibility for changing ventilation rate requirements
  • Detachable front panel enabling the cleaning of the diffuser and ductwork
  • Connection to ductwork using integrated balancing plenum with optional duct connection dimensions and plenum heights
  • Circular duct connection with integral gasket
  • Balancing plenum with an air flow rate measurement function
     

ACCESSORIES

  • Air flow range adapter
  • Various front panel options
  • Deflectors for the direction of the flow pattern for models DCS/C and DCS/P
  • Sound attenuation options

The diffuser shall be of the modular type and comprise a diffuser and balancing plenum.
The front panel dimensions shall be adapted to a modular 600 x 600 mm suspended ceiling.
The front panel of the diffuser shall be changeable, providing different appearance options.
The air flow operating range shall be adaptable by replacing an exchangeable air flow range adapter, independently of the diffuser size.(DCS/P, DCS/C, DCS/A, DCS/J)
The duct connection shall have optional dimensions, for adaptation to different air flow rates.

The balancing plenum shall be made of galvanised steel, comprising a changeable spigot in different sizes with integral gasket for airtight duct connection.

The front panel of the diffuser shall be detachable for access to the balancing plenum, the air flow range adapter, ductwork and the air flow measurement and adjustment module.

DCS/P
The perforated front panel of the diffuser shall be made of epoxy-painted steel with white (RAL 9010) as the standard colour.

DCS/C DCS/A
The conical front panel of the diffuser shall be made of extruded aluminium, with polyester white (RAL 9010) as standard colour.

DCS/J
The swirl front panel of the diffuser shall be made of epoxy-painted steel with a white (RAL 9010) standard colour. The swirl diffuser comprises fixed spiral blades to ensure a high mixing rate.

DCS/N
The multi-nozzle front panel of the diffuser shall be made of epoxy-painted steel with a white (RAL 9010) standard colour. The nozzles shall have a two-slot design in order to ensure efficient mixing of supply air. Nozzles shall also be individually adjustable in order to provide high flexibility for the adjustment of the throw pattern.

Introduction

Halton DCS

Modular diffuser unit

  • Available for supply and exhaust
  • Modular construction with five different, interchangeable front panel options suited for modular 600 x 600, 625x625, 675x675 mm ceilings, providing different appearance and performance characteristic 
  • Diffuser adaptation possibility for changing ventilation rate requirements
  • Detachable front panel enabling the cleaning of the diffuser and ductwork
  • Connection to ductwork using integrated balancing plenum with optional duct connection dimensions and plenum heights
  • Circular duct connection with integral gasket
  • Balancing plenum with an air flow rate measurement function
     


        DCS/C              DCS/A                  DCS/N               DCS/J                DCS/P
 

Accessories

  • Air flow range adapter
  • Various front panel options
  • Deflectors for the direction of the flow pattern for models Halton DCS/C
    and Halton DCS/P
  • Sound attenuation options

Dimensions

Dimensions


Halton DCS
 


 

NS H1 H2 W1 Ø D
100 163 135 555 99
125 163 135 555 124
160 263 189 555 159
200 263 189 555 199
250 363 239 555 249
315 363 239 555 314

 

 

 Ceiling integrations H3 W2
 T-ceiling 600 6 20.5
 T-ceiling 625 6 33
 T-ceiling 675 6 58
 Plaster-Armstrong 600 6 20,5
 Dampa 600 20 22
 Fineline 600 8 15
 Fineline 675 8 52,5

Material

Material


Halton DCS

 Part  Material  Note
 Perforated front panel  Perforated steel  
 Conical front panel  Aluminium  
 Swirl diffuser
 front panel
 Steel  
 Multi-nozzle
 front panel
 Steel  
 Nozzles  Plastic  The maximum recommended
 temperature for plastic nozzle
 material is 60°C.
 Nozzle colour options:
 white and black
 Balancing plenum  Galvanised steel  
 Sound attenuation
 material
 Polyester fiber
 Mineral wool
 2 options
 Spigot  Galvanised steel  
 Coupling sleeve
 with gasket
 Hot galvanised steel  Rubber compound
 gasket
 Adjustment module
 MSC,MEC
 Body:           Aluminium
 Blade:          Galvanised steel
 Brackets:      Galvanised steel
 Plastic parts: Polypropylene (PP)
 Spindle:        Stainless steel
 
 Airflow equalizer  Steel
 Plastic parts: Polypropylene (PP)
 
 Ceiling adapter  Steel  
 Finishing of
 perforated
 front panel (DCS/P)
 Epoxy painted: White
 (RAL 9010 / 50 % gloss)
 Special colours
 available
 Finishing of conical
 front panels
 (DCS/C, DCS/A)
 Polyester painted: White
 (RAL 9010 / 50 % gloss)
 Epoxy painting
 (100 %) available
 Finishing of
 multi-nozzle 
 front panel (DCS/N)
 Epoxy painted:White
 (RAL 9010 / 50 % gloss)
 Special colours
 available
 Finishing of swirl jet
 front panel (DCS/J)
 Epoxy painted: White
 (RAL 9010 / 50 % gloss)
 Special colours
 available

Accessories

Accessories


Halton DCS

 Accessory Code  Description  Note
 Duct connection with spigot SP/DCS  Interchangeable duct size  
 Air flow range adapter N/DCS  Adaptation of air flow range  
 Sound attenuation AT/DCS  Sound absorption material
 for duct noise attenuation
 Material options:
 Polyester fiber
 Mineral wool
 Perforated front panel,
 conical front panel,
 conical solid centre front panel,
 multi-nozzle front panel,
 swirl diffuser front panel
P/DCS,
C/DCS,
A/DCS,
N/DCS,
J/DCS
 Exchangeable front panels  

Function

Function


Halton DCS

The diffuser allows both appearance and performance to be changed and adapted to new requirements and operation conditions.




   
Halton DCS/P
Air is supplied to the space through the perforated front panel and mixed into the room air outside the diffuser. The recommended maximum air temperature difference between supply and room air is -8 °C.

Halton DCS/C
Air is supplied to the space through the slots of the conical front panel and mixed into the room air outside the diffuser. The recommended maximum air temperature difference between supply and room air is -12 °C.

Halton DCS/A
Air is supplied to the space through the slots of the conical front panel and mixed into the room air outside the diffuser. The recommended maximum air temperature difference between supply and room air is -12 °C.

Halton DCS/N
Air is supplied both horizontally and vertically to the space through the front panel of the diffuser.
The supply air pattern can be radially directed in the direction(s) desired (1, 2, 3, and 4) by manually rotating the nozzles.
Horizontal swirl jet and later vertical air patterns can also be achieved by adjusting the nozzles.
The direction of the supply air has no effect on the pressure drop or the air flow rate.
The recommended maximum air temperature difference between supply and room air is -10 °C

Halton DCS/J
The horizontal radial swirl jet air is supplied to the space through the profiled spiral blades of the diffuser The recommended maximum air temperature difference between supply and room air is -12 °C.
The supply air jet velocity is effectively reduced because of the high mixing effect.

 

Function in general

The balancing plenum equalises the air flow by reducing the flow velocity.
Air is spread evenly into the diffuser, ensuring proper function.
Air flow range can be adapted to the actual demand by changing the air flow range adapter, by which means proper air distribution for a wide operation range is ensured. (DCS/P, DCS/C, DCS/A, DCS/J)
The air flow rate can be adjusted by using the detachable measurement and adjustment module.
The balancing plenum also attenuates duct noise.
The diffuser can also be used as an exhaust unit.
 

Nozzle Settings

Nozzle settings


Halton  DCS/N

 








 

Installation

Installation


Halton DCS


Code description
1.   Front panel
2.   Ceiling adapter
3.   Balancing plenum
4.   Duct connection with spigot
5.   Air flow range adapter


As needed, the duct connection size and air flow range adapter can be changed in order to adapt the installed diffuser to a significantly reduced or increased air flow rate.
Multi-nozzle diffusers do not have air flow range adapters. Instead, front panels with more or fewer nozzles are changed in this context in the stead of an air flow range adapter change.

The diffuser is connected to the balancing plenum via fastening plates and screws.

 


 

Adjustment

Adjustment


Halton DCS

 



The supply and the exhaust flow rates are determined by measuring the differential pressure from the measurement nipple with a manometer.
The air flow rate is calculated by using the formula below.

  

 

k-values for exhaust
 

Neck DCS/A DCS/C DCS/J DCS/P
340 32.3 69.6 28.9 79.3
250 27.9 47.2 21.2 51.8
160 17.6 21.4 13.6 23.2
125 9.7 11.1 8 12

 

 

Nozzles DCS/N
80 52.8
36 27.2
16 12.9



k-values for supply


DCS/A

Neck k-value k-value 0-opening
340 33.1 27.7
250 26.6 0.07 x D + 2.82
160 13.8 11.3
125 8.2 6.6



DCS/C

Neck Directioning k-value k-value 0-opening
340 R4 52.9 0.24 x D - 31.75
340 R3 49.7 0.24 x D - 31.75
340 R2 44 0.24 x D - 31.75
250 R4 32 0.08 x D + 2.73
250 R3 32.6 0.08 x D + 2.73
250 R2 29.2 0.08 x D + 2.73
160   14.5 11.4
125   8.3 6.6



DCS/J

Neck k-value k-value 0-opening
340 33.1 26.3
250 26.1 0.06xD+4.31
160 14.1 11.4
125 8.4 6.6


 

DCS/N

Nozzles Duct connection k-value k-value 0-opening
80 315, 250 48.1 0.18 x D - 13.12
80 200 40.5 0.18 x D - 13.12
36   27.4 0.08 x D + 2.37
16   13.2 0.06 x D + 1.00



DCS/P

Neck Directioning k-value k-value 0-opening
340 R4 50.6 0.22 x D - 26.91
340 R3 47.7 0.22 x D - 26.91
340 R2 46.3 0.22 x D - 26.91
250 R4 30.3 0.08 x D + 3.94
250 R3 29.6 0.08 x D + 3.94
250 R2 28.6 0.08 x D + 3.94
160   13.4 11.1
125   8 6.3



ATTN.
D = diameter of duct connection in mm

Adjust the air flow rate by rotating the control spindle of the MSC/MEC unit until the desired setting is achieved.
Lock the damper in position with a screw. Replace the spindle in the plenum.
 

Servicing

Servicing


Halton DCS

Open the front panel of the diffuser.
Detach the air flow range adapter by unscrewing the four screws.

Remove the air flow adjustment module by pulling gently on the shaft (not the control spindle).
Wipe the parts with a damp cloth, instead of immersing in water.
The washable Dacron sound attenuation material within the plenum can be removed to enable cleaning of the inner side of the plenum.

Remount the measurement and adjustment module by pushing on the shaft until the unit meets the stop.
Fix the air flow range adapter in place by screwing in the four screws.
Push the front panel back into its place so that the springs lock.
 

Technical specification

Technical specification text

 

The diffuser shall be of the modular type and comprise a diffuser and balancing plenum.
The front panel dimensions shall be adapted to a modular 600 x 600 mm suspended ceiling.
The front panel of the diffuser shall be changeable, providing different appearance options.
The air flow operating range shall be adaptable by replacing an exchangeable air flow range adapter, independently of the diffuser size.(DCS/P, DCS/C, DCS/A, DCS/J)
The duct connection shall have optional dimensions, for adaptation to different air flow rates.

The balancing plenum shall be made of galvanised steel, comprising a changeable spigot in different sizes with integral gasket for airtight duct connection.

The front panel of the diffuser shall be detachable for access to the balancing plenum, the air flow range adapter, ductwork and the air flow measurement and adjustment module.

Halton DCS/P
The perforated front panel of the diffuser shall be made of epoxy-painted steel with white (RAL 9010) as the standard colour.

Halton DCS/C, Halton DCS/A
The conical front panel of the diffuser shall be made of extruded aluminium, with polyester white (RAL 9010) as standard colour.

Halton DCS/J
The swirl front panel of the diffuser shall be made of epoxy-painted steel with a white (RAL 9010) standard colour. The swirl diffuser comprises fixed spiral blades to ensure a high mixing rate.

DCS/N
The multi-nozzle front panel of the diffuser shall be made of epoxy-painted steel with a white (RAL 9010) standard colour. The nozzles shall have a two-slot design in order to ensure efficient mixing of supply air. Nozzles shall also be individually adjustable in order to provide high flexibility for the adjustment of the throw pattern.

 

Product Code

Product code
 

DCS/F-D-N-M

F  = Front panel
       C       Conical
       A1     Conical with centre plate, 1
       A2     Conical with centre plate, 2
       A3     Conical with centre plate, 3
       P       Perforated
       J       Swirl
       N1     Nozzle, 16 pcs
       N2     Nozzle, 36 pieces
       N3     Nozzle, 80 pieces

D = Diameter of duct connection
      100, 125, 160, 200, 250, 315

N =  Air flow range adapter
       125, 160, 250, 340
       N        None, if F = N1, N2 or N3

M = Model
       S1      Supply + MSC
       S2      Supply +Airflow equaliser
       E1      Exhaust + MEC
       E2      Exhaust + Airflow equaliser
  

Other options and accessories

J  = Jet direction
       R2      2 directions
       R3      3 directions
       R4      4 directions

IO = Ceiling type installation option
        NA      Standard for T-profile 600
        AM      Armstrong Orcal ceiling
        DC      Dampa ceiling
        FL       Fineline ceiling 600
        TP       T-profile 625
        T2       T-profile 675    
        F2       Fineline ceiling 675

AT = Sound attenuation material
        N        No attenuation material
        D        Polyester fiber
        W       Mineral wool

CO = Colour
         W      White, RAL 9010
         X       Special colour

ZT = Tailored product
         N         No
 

  Code example

  
          DCS/C-315-250-S1, J=R3, IO=NA, AT=D, CO=W,       
 

Downloads & Media

Halton DCS - se
Type
Datasheet
Language
Swedish (Sweden)
Size
5.3 MB
Halton DCS - gb
Type
Datasheet
Language
English (United Kingdom)
Size
5.3 MB
Halton DCS - nl
Type
Datasheet
Language
Dutch (Netherlands)
Size
5.2 MB
Halton DCS - dk
Type
Datasheet
Language
Danish (Denmark)
Size
5.2 MB
Halton DCS - fr
Type
Datasheet
Language
French (France)
Size
2.1 MB
Halton DCS - fi
Type
Datasheet
Language
Finnish (Finland)
Size
5.2 MB
Halton DCS - ru
Type
Datasheet
Language
Russian (Russia)
Size
5.3 MB