DHL - HEPA diffuser

HEPA laminar diffuser

Low turbulence flow supply and exhaust Halton Vita perforated laminar diffuser DHL with HEPA filter for hospital and clean room environments.

  • Available for supply and exhaust
  • Suitable for integrated ceiling and wall installation
  • A measurement access through the diffuser plenum for pressure measurement and aerosol test
  • Easy filter change and cleaning through the openable diffuser panel
  • Reduced installation space requirement due to low unit height
  • Easy installation with fixing brackets
  • Sizes 595 and 670 adapted for installation in modular suspended ceilings
  • Filters E10, H13 and H14 available as standard
  • Powder coated finishing, standard colour RAL9010

ACCESSORIES

  • E10, H13 and H14 with foamed polyurethane gasket 
  • H14 with gel gasket
  • Pre-filter G4 for exhaust applications
  • Filters should be ordered separately

Halton DHL

HEPA Laminar diffuser

  • Low turbulent flow diffuser, also suitable for exhaust
  • Installation flush to the ceiling, also suitable for wall installation
  • A measurement access through the diffuser plenum for pressure measurement and aerosol test
  • Easy filter change and cleaning through the openable diffuser panel
  • Low unit height reduces the space for installation
  • Fixing brackets for easy installation of the product
  • Sizes 595 and 670 adapted for installation in modular suspended ceilings
  • HEPA filters E10, H13 and H14 available as standard
  • Powder coated finishing, standard colour RAL9010

Accessories

  • Laminar flow filters E10 and H13 with foamed polyurethane gasket
  • Laminar flow filter H14 with foamed polyurethane or gel gasket
  • Pre-filter G4 for exhaust applications
  • Filters do not include to the diffuser delivery, should be ordered separately.
     

Dimensions

 

DHL ØD W H K K1 K2 P
365-1 159 365 210 336 320 392 27
595-1 199 595 210 554 473 545 33
670-1 314 670 210 642 625 697 39


DHL ØD W P K M
975-1 314 670 975 955 646
1280-1 399 670 1280 1260 646

 

 


DHL ØD W H H1 K K1 K2
365-2 159 365 360 252 336 320 392
595-2 199 595 400 272 554 473 545
670-2 249 670 450 297 642 625 697


 

DHL L W K K1 K2
365-3 199 365 336 320 392
595-3 399 595 554 473 545
670-3 499 670 642 625 697

Material

 Part  Material  Note

 Casing

 Galvanised steel  
 Front panel  Perforated steel  
 Coupling sleeve  Galvanised steel  
 Filter brackets  Acid proof or galvanised steel  
 Guide pins  Polyethylene (PET)  
 Fixing brackets  Galvanized steel  
 Finishing  Polyester painting, standard colour RAL 9010  Special colours available

Function

Air is filtered and supplied with low turbulence into the space or exhausted through the perforated front panel of the unit.

 

Filters

Laminar flow filter, class E10, H13 and H14


Specification

  • Strong frame and construction with steel protection grid
  • Filters available in classes E10, H13 and H14
  • Aluminium frame, foamed polyurethane or gel gasket
  • Protection screens composed of stretched steel grid with white painting
     

Materials

 Part  Material
 Filter media  Folded class fibre paper
 Frame  Aluminium
 Gasket  Foamed polyurethane or gel

 

Operating range

  • Continuous operating temperature  80 0C
  • Relative humidity max. 100 % 
  • Recommended maximum final pressure drop 250 Pa
  • The nominal flow rate is the recommended maximum, otherwise the efficienfy might reduce
 


Filter selection

 

Dimensions

E10, H13 and H14 with polyurethane gasket

Filter W H D
CLP-LF-AF-305-305-68 ... 305 305 68
CLP-LF-AF-457-457-68 ... 457 457 68
CLP-LF-AF-610-610-68 ... 610 610 68
CLP-LF-AF-610-914-68 ... 610 914 68
CLP-LF-AF-610-1219-68 ... 610 1219 68

H14 with gel gasket

Filter W H D
CLP-LF-AF-305-305-78 ... 305 305 78
CLP-LF-AF-457-457-78 ... 457 457 78
CLP-LF-AF-610-610-78 ... 610 610 78
CLP-LF-AF-610-914-78 ... 610 914 78
CLP-LF-AF-610-1219-78 ... 610 1219 78

 

Technical values


Nominal airflow rate is based on face velocity 0,45 m/s. This nominal flow rate should not exceed.

 

Coarse panel filter, Class G4

Specification

  • Progressive thermally smoothened synthetic polyester having high dust holding capacity and high constancy for humidity
  • The filter media is framed by a rigid plastic frame, which makes filters completely incinerable.
  • Glueable gasket provided with filter delivery


Filter selection

 

Materials

 Part  Material
 Filter media  Polyester fibre
 Frame  Plastic
 Gasket  Foamed plastic


Operating range

  • Maximum operating temperature  80 0C
  • Relative humidity max. 100 %
  • Final pressure drop recommended for filter replacement 200 Pa 
  • Initial efficiency (2 µm, 1700 m3/h) 50 %
 

Dimensions

                                                                                                          

Filter Code W H D
CL-KSM-300x300x25-G4-S  300  300  25
CL-KSM-455x455x25-G4-S  455  455  25
CL-KSM-610x610x25-G4-S  610  610  25
CL-KSM-455x610x25-G4-S 455 610 25
CL-KSM-605x610x25-G4-S 605 610 25

Filter dimensions are without gasket.

Installation

  1. Front panel
  2. Filter
  3. Plenum
  4. Fixing brackets

The diffuser is connected directly to the duct by screwing or by riveting. The connection is sealed as leakproof with an appropriate method.
The diffuser is installed either fast into or hanged from the ceiling with M6 (recommended minimum) drop rods using fixing brackets. Alternatively the diffuser is installed fast to the wall construction.
It will not be allowed to drill or make any holes to the diffuser plenum.

Open the front panel be gently pulling from the openings in the front panel. Front panel will hang from the hinges. Detach the panel from the hinges.
Clean the diffuser plenum before the filter installation.
Install the filter into diffuser. The guide pins ensure the exact location of the filter. Turn or slide the brackets below the filter and tighten them evenly.

Scan the filter for bypass leakages and correct the tightness, if necessary
Reattach the front panel by pushing it until the springs lock.

Adjustment

The airflow adjustment and shut off will be made with Halton PTS/A damper in the ductwork (tightness class 4 EN 1751). The pressure drop of the clean filter can be used as a reference for airflow rate with a reasonable accuracy. If there is no measurement unit available, Halton MSA or MSD may be used as measurement unit.

 

Constant or variable airflow&shut off

The airflow is adjusted with the aid of electrical airflow management damper Halton HFB/G in the ductwork. Depending on the application the damper is ordered either with constant or variable air volume settings. See details of ordering from Halton HFB documentation.

Servicing

Close the airflow with the shut off damper.
Detach the front panel by gently pulling from the openings in the front panel. The front panel can also be removed to further ease the filter change. 

Remove the filter from the diffuser box by unlocking the brackets and turning or sliding the fasteners to the side.
Clean carefully the diffuser and housing with a suitable method. 
Install the new filter and lock it with the fasteners and tighten the screws.

Scan the filter for bypass leakages and correct the tightness, if necessary.
Reattach the front panel by pushing it until the springs lock.

Technical Specification

Low turbulence flow supply and exhaust Halton laminar diffuser DHL with HEPA filter for hospital and clean room environments to be installed flush to the ceiling or to the wall.

Nominal size 595 and 670 adapted for installation in modular suspended ceiling. Diffuser frame (size 595) adapted to suite different ceiling types. The diffuser is installed either fast into ceiling/wall or hanged from the ceiling using movable fixing parts.

Diffuser casing is made of galvanized steel and powder painted. The inside of the diffuser is smooth to enable easy cleaning and free from grooves to prevent collection of impurities. Plenum is equipped with an internal measurement tap for filter pressure drop and aerosol test.

Easy filter change and cleaning of the diffuser and ductwork through open able diffuser panel. Integral guides shall enable exact positioning of the filter to ensure complete thigness.

HEPA filter with aluminium frame and cold molded polyurethane or gel gasket according to EN 1822 is supplied with individual test certificate (H14).

Order code

DHL-A-D

A = Diffuser size
              A = 365
              A = 595
              A = 670
              A = 975
              A = 1280

D = Duct nonnection
             
D = 1   Top connection (available in all sizes)
              D = 2   Side connection, round (sizes 365, 595 and 670)
              D = 3   Side connection, rectangular (sizes 365, 595 and 670)

 

Other options and and accessories

CO = Colour
              W   White, RAL 9010
              X   Special colour

IO = Ceiling type installation option
             
NA   Standard T-profile (All sizes)
             DC   Dampa ceiling (Only for A = 595)

MA = Material
            
CS   Galvanized steel

 

Code Example

DHL-595-1, CO=W, IO=NA, MA=C

 

Related products

Laminar flow filter 
              CLP-LF-AL-457-457-68-0-E10-GF-P

Goarse panel filter
              CL-KSM-455-455-25-G4-S
 

Downloads & Media

Halton DHL - uk
Type
Datasheet
Language
English (United Kingdom)
Size
839,2 kB
Halton DHL - fr
Type
Datasheet
Language
French (France)
Size
1,2 MB
Halton DHL - ru
Type
Datasheet
Language
Russian (Russia)
Size
857,2 kB