DHS - HEPA diffuser

HEPA swirl diffuser

High turbulent swirl diffuser with HEPA filter for hospital and clean room environments to be installed flush to the ceiling or to the wall.

  • Horizontal swirl air supply with high mixing properties
  • 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  
  • Filters E10, H11 and H14 available as standard
  • Powder coated finishing, standard colour RAL9010

ACCESORIES

  • E10, H13 and H14 with foamed polyurethane gasket 
  • H14 with gel gasket
  • Filters should be ordered separately

Horizontal radial swirl supply air diffuser Halton DHS with HEPA filter for hospital and clean room environments to be installed flush to the ceiling or to the wall.

Diffuser is adapted for installation in modular suspended ceiling. Diffuser frame will adapt to suite different ceiling types. The diffuser is installed either fast into ceiling/wall or hanged from the ceiling using installation brackets.

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).

Introduction

Halton DHS

HEPA Swirl diffuser

 

  • Horisontal discharge of the supply air with swirl effect
  • 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
  • HEPA filters E10, H13 and H14 available as standard
  • Powder coated finishing, standard colour white (RAL9010)

Accessories

  • Laminar flow filters E10 and H13 with foamed polyurethane gasket
  • Laminar flow filter H14 with foamed polyurethane or gel gasket 
  • Filters do not include to the diffuser delivery, sould be ordered separately

Dimensions

Halton DHS, top connection - circular (D=1)

 

Halton DHS, side connection - circular (D=2)

 

Halton DHS, side connection - rectangular (D=3)

Material and finishing

MATERIAL AND FINISHING

 

Part Material Note

Casing

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

Function

FUNCTION

Air is filtered and supplied with swirl effect into the space or exhausted through the front panel of the unit.

Filters

FILTERS

Laminar flow filter, class E10, H13 ja 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, othewise the efficiency might reduce
 

 

Filter selection 

 Dimensions

E10, H13 and H14 with polyurethane gasket

Filter W H D
CLP-LF-AF-457-457-68 ... 457 457 68

 

H14 with gel gasket

Filter W H D
CLP-LF-AF-457-457-78 ... 457 457 78

  

Technical values 

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

Installation

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 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

ADJUSTMENT

The airflow adjustment and shut off will be made with 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 AIR FLOW & SHUT OFF

The airflow is adjusted with the aid of electrical airflow management damper 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 HFB documentation.

Servicing

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 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.

Specification text

Specification text
 

Horizontal radial swirl supply air diffuser Halton DHS with HEPA filter for hospital and clean room environments to be installed flush to the ceiling or to the wall.

Diffuser is adapted for installation in modular suspended ceiling. Diffuser frame will adapt to suite different ceiling types. The diffuser is installed either fast into ceiling/wall or hanged from the ceiling using installation brackets.

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).

Product code

PRODUCT CODE

DHS-A-D

 

A = Diffuser size
             
A = 595

D = Duct nonnection
             
D = 1   Top connection
              D = 2   Side connection, round
              D = 3   Side connection, rectangular

 

Specifics 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 D = 595)

MA = Material
             CS   Galvanized steel

 

Code Example

DHS-595-1, CO=W, IO=NA, MA=CS

 

Related products

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

 

 

 

Downloads & Media

Halton DHS - uk
Type
Datasheet
Language
English (United Kingdom)
Size
691.1 kB
Halton DHS - fr
Type
Datasheet
Language
French (France)
Size
773.0 kB
Halton DHS - ru
Type
Datasheet
Language
Russian (Russia)
Size
707.3 kB