DFB - Conical diffuser

Square conical diffuser for ceiling installation


Easy to clean and maintain.

  • Suitable for horisontal supply and exhaust
  • Openable cone module enables cleaning of the diffuser and ductwork.
  • All sizes adapted for installation in modular 600x600 mm suspended ceiling
  • Lightweight aluminum material

Accessories

  • Airflow adjustment damper
  • Plenum options with measurement and adjustment functions
  • Measurement and adjustment module

The diffuser is made of extruded aluminium, polyester-painted to white (RAL 9010) colour.

The bevel angles of the outer frame and central cone are welded so that the joints are almost invisible.

The diffuser is connected to the ductwork using a plenum with mineral wool as sound attenuation material.

The plenum is equipped with an airflow measurement and adjustment module.
The central cones of the diffuser sre detachable to provide access to the measurement and adjustment module in the plenum.

Halton DFB

Square conical ceiling diffuser

  • Suitable for horisontal supply and exhaust
  • Openable cone module enables cleaning of the diffuser and ductwork.
  • All sizes adapted for installation in modular 600x600 mm suspended ceiling
  • Lightweight aluminum material
     

Accessories

  • Airflow adjustment damper
  • Plenum options with measurement and adjustment functions
  • Measurement and adjustment module
     

Dimensions

NS W W1
6x6 295 150
9x9 370 225
12x12 445 300
15x15 520 375
18x18 595 450
21x21 670 525
24x24 745 600

 

NS W W1 H ØD
6x6 295 150 225 124
9x9 370 225 310 199
12x12 445 300 350 249
15x15 520 375 415 314
18x18 595 450 500 399
21x21 670 525 550 449
24x24 745 600 600 499

Material

 Part  Material  Finishing  Note
 Frame  Aluminium  Polyester-painted,
 White
 (RAL 9010/50% gloss)
 Special colours available
 Central cone  Aluminium  Polyester-painted,
 White
 (RAL 9010/50% gloss)
 Special colours available

Accessories

 Accessory Code  Description
 Plenum PDF/H  Plenum for horizontal duct connection
 (with or without insulation)
 Plenum PDF/V  Plenum for vertical duct connection
 (with or without insulation)
 Airflow measurement
 and adjustment module
MSM  For supply installation
 Sound attenuation IN  Mineral wool in the plenum
 Flow adjustment damper ODD  Aluminium opposite blade damper for
 flow adjustment


Product Models

All standard sizes are available also with 1, 2 or 3 supply directions (DFC).

Function

Air is supplied horisontally into the space through the slots in the conical front panel.
Supply air mixes with room air in the vicinity of the diffuser.

The fixed cones of the diffuser are designed to ensure that the supply air flows along the ceiling.

The Halton DFB diffuser can also be used as an exhaust unit. 

Installation

Code description
1.  Plenum
2.  Spigot
3.  Clips
4.  DFB or DFC plenum
 

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

The diffuser is attached to the plenum via clips.
 

Dimensions of installation hole

NS H (mm) L (mm)
6x6 215 215
9x9 290 290
12x12 365 365
15x15 440 440
18x18 515 515
21x21 590 590
24x24 665 665

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 airflow is determined by measuring the pressure difference with a measurement module.
Measure the differential pressure with a manometer.

The airflow rate is calculated according to the following formula:
 

where:

∆Pm     is the measured pressure (Pa)
k          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
Spigot Diameter > 6xD min. 3xD
100 6 7
125 10 12
160 19 22
200 28 32
250 49 51
315 78 -

 

Airflow adjustment damper OD

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

Servicing

Remove the central cones by gently drawing out the central part.
Clean the parts by wiping them with a damp cloth.

Push the central cones back into place so that the springs lock.
 

Option: With balancing plenum Halton PDF + MSM

Remove the measurement and adjustment module by gently pulling the shaft (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 central cones back into place so that the springs lock.

Specification

The diffuser is made of extruded aluminium, polyester-painted to white (RAL 9010) colour.

The bevel angles of the outer frame and central cone are welded so that the joints are almost invisible.

The diffuser is connected to the ductwork using a plenum with mineral wool as sound attenuation material.

The plenum is equipped with an airflow measurement and adjustment module.
The central cones of the diffuser sre detachable to provide access to the measurement and adjustment module in the plenum.

Order Code

DFB/S-A-B; FI-CO-ZT

S = Model   
      A     Standard
      B     Suspended ceiling installation 600x600
      C     Suspended ceiling installation 675x675

A = Size of connection
       S=A: 6, 9, 12, 15, 18, 21, 24
       S=B: 6, 9, 12, 15
       S=C: 6, 9, 12, 15, 18

B = Height of connection
       A=6: 6
       A=9: 9
       A=12: 12
       A=15: 15
       A=18: 18
       A=21: 21
       A=24: 24
 

Other options and Accessories

FI  = Finishing   
        PN     Painted

CO = Colour
         W      White
         X        Special colour

ZT  = Tailored product
         N        No
         Y       Yes
 

Sub products

          PDF   Plenum for DFB and DFC
 

Code example

          DFB/A-6-6, FI=PN, CO=W, ZT=N

References stored

References stored

20000244

DFB-12X12-W
20000246 DFB-18X18-W
20000249 DFB-600-12X12-W
20000250 DFB-600-15X15-W
20000251 DFB-600-6X6-W
20000252 DFB-600-9X9-W
20000253 DFB-6X6-W
20000254 DFB-9X9-W

 

Accessories stored 

20005701 PDF/H-12x12
20005702 PH-15x15
20005704 PDF/H-6x6
20005705 PDF/H-9x9
20007162 PDF/H-18x18 diam400
20000622 OD/DF-12x12
20000623 OD/DF-15x15
20000624 OD/DF-18x18
20000627 OD/DF-6x6
20000628 OD/DF-9x9

Downloads & Media

Halton DFB - ru
Type
Datasheet
Taal
Russisch (Rusland)
Grote
799,3 kB
Halton DFB - gb
Type
Datasheet
Taal
Engels (Verenigd Koninkrijk)
Grote
768,9 kB
Halton DFB - dk
Type
Datasheet
Taal
Deens (Denemarken)
Grote
771,2 kB
Halton DFB - fr
Type
Datasheet
Taal
Frans (Frankrijk)
Grote
713,2 kB
Halton DFB - se
Type
Datasheet
Taal
Zweeds (Zweden)
Grote
769,0 kB
Halton DFB - fi
Type
Datasheet
Taal
Fins (Finland)
Grote
769,1 kB
Halton DFB - nl
Type
Datasheet
Taal
Nederlands (Nederland)
Grote
769,8 kB