JTH - Halton Jaz diffuser

Swirl diffuser

Halton JTH is perfectly suited for installations with variable air flow e.g. with fan-coil units operating at various speed.
The diffuser enables also easy layout changes thanks to adjustment of air supply from vertical to horizontal. To match with the different interiors Halton JTH has several outlook options.

  • Swirl diffuser completed with black adjustable plastic air control blades and plenum with perforated equalizing plate.
  • Blades can be manually adjusted to give either horizontal or vertical discharge.
  • Therefore discharge direction can be easily matched with changing building layouts.
  • Installation using balancing plenum with side connection. Connection box made of galvanized sheet metal.
  • The unit is perfectly suited for installations with variable air flow.
  • Cooperates particularly well with fan-coil units operating at various speed (variable flow from 25% to 100% depending on the settings).
  • Horizontal or vertical air supply. Therefore discharge direction can be easily matched with changing building layouts.
  • Suitable for supply and exhaust.
  • Ceiling integration installation.
  • Supply air jet velocity is effectively reduced due to high mixing effect.
  • Suited for installation in a modular or monolith ceilings.
  • Circular duct connection with rubber gasket.

 

Product models & accessories

  • Model with sound attenuation material (mineral wool)
  • Measurement and airflow rate adjustment module (MSM)
  • Different front plate patterns.

Halton Jaz

JTH - Swirl diffuser unit

 

  • Swirl diffuser completed with black adjustable plastic air control blades and plenum with perforated equalizing plate.
  • Blades can be manually adjusted to give either horizontal or vertical discharge. Therefore the discharge direction can be easily matched with changing building layouts.
  • Installation using balancing plenum with side connection
  • The device is perfectly suited for installations with variable air flow.
  • Cooperates particularly well with fan-coil units operating at various speed (variable flow from 25% to 100% depending on the settings).
  • Horizontal or vertical air supply. Therefore discharge direction can be easily matched with changing building layouts.
  • Suitable for supply and exhaust.
  • Ceiling integration installation.
  • Supply air jet velocity is effectively reduced due to high mixing effect.
  • Suited for installation in a modular or monolith ceilings.
  • Circular duct connection with rubber gasket.

 

Product models & Accessories

  • Model with sound attenuation material   (mineral wool)
  • Measurement and airflow rate adjustment module (MSM) 
  •  Different front plate patterns.

Dimensions

 

L1 L2 H1 H2 ØD
395 367 270 135 124
495 467 270 135 159
595 577 330 165 199
620 587 376 188 249

Material

 Part  Material  Note
 Casing  Galvanised steel  
 Front panel  Steel with plastic vanes  
 Attenuation  Mineral wool  Polyester fibre available by request.
 Coupling sleeve  Galvanised steel  
 Duct gasket  Rubber compound  
 Finishing

 Epoxy-painted,
 white (RAL 9010)

 Special colours available

Accessories

 Accessory Code  Description
 Airflow measurement and
 adjustment unit
YS  Adjustment and measurement module
 for supply airflow rate
 Airflow adjustment unit YE  Adjustment module for exhaust airflow rate
 Sides of sound attenuation IN  3 sides or 5 sides

Product models


Fig.1.  Front panel size 595x595 mm, round pattern (P=R)

 

 


Fig.2.  Front panel size 595x595 mm, star pattern (P=S)

Function

 

  • The highly efficient mixing of the swirl jet produced by the diffuser reduces the end velocity of the jet, as well as the temperature differences very quickly. This allows the air to be blown into the room free from draughts even under extreme conditions (high air exchange or temperature differences.)
  • The free cross-section is the same in all vane positions, so that pressure loss and volume level do not change when the throw pattern is adjusted.
  • Ensures a high level of air flow volume and rapid  air temperature change while maintaining  low noise levels.
  • Appropriate for air supplier differences up to  10 OC degrees.

Installation

 

We recommend installing the plenum part into the suspended ceiling with metal hangers (not supplied in the delivery) and connected to the ductwork with the spigot equipped with an integral rubber gasket.

Adjustment

The supply volume flow rate is determined using the measurement and adjustment module MSM.

Open the front panel and equalisation plate, pass the tubes and control spindle through the equalisation plate and side slot of the diffuser.

Replace the front panel.

Measure the differential pressure using a manometer. The airflow rate is calculated using the formula below.

 

Adjust the airflow rate by rotating the control spindle until the desired setting is achieved.
Lock the damper position with a screw.
Reassemble the tubes and spindle into the plenum and replace the diffuser front panel.

The exhaust flow rate is determined by using the separate measurement module located in the equalisation plate.

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

  Safety distance
Spigot (ØD) > 8 x D min 3 x D
125 9,9 12,6
160 16,9 21,9
200 28,3 32,0
250 47,9 51,5

Servicing

Detach the front panel of the diffuser by removing the central bolt and pulling it down.

Wipe the parts with a damp cloth.

Push the front panel back into place and fasten the central bolt.
 

Option with balancing plenum

Detach the front panel of the diffuser by removing the central bolt and pulling it down. Remove the measurement and adjustment module by gently pulling out the shaft (Not the control spindle or measurement tubes!).

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 front panel back into place and fasten the central bolt.

Technical Specification

Halton JTH is a swirl type ceiling diffuser with a square-shaped powder-coated frontplate and a galvanized plenum with perforated balancing plate.

The individually adjustable plastic vanes generate high induction swirl jet which ensures effective mixing of the supply air with air present in the room, as well as enables fast temperature decrease resulting in low air velocities in the comfort zone.

Since the plastic vanes can be adjusted individually, it is allowing users to set the throw pattern according to the room specification.

Order Code

JTH/S-D-F-P
 

S   =  Model
 
         S       Supply
          E       Exhaust

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

F   =  Front panel size
          395     395x395
          495     495x495
          595     595x595
          620     620x620

P   =  Front panel pattern
         
R        Round
          S        Star


Other options and accessories

CO = Colour 
          W        White (RAL 9010)
           X        Special colour

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

IN  =  Sides of sound attenuation
      
    3          Sound attenuation on 3 sides
          5          Sound attunuation on 5 sides
          N          No sound attenuation
 

OM = Measurement and adjusment module
          YS        MSM (supply)
          YE        MEM (exhaust)
          NA        No measurement or adjusment module

ZT = Tailored product
          N         No


Code example

          JTH/S-200-495-R, CO=W,AT=W, IN=3, OM=YS, ZT=N

 

 

Downloads & Media

Halton JTH uk
Type
Datasheet
Taal
Engels (Verenigd Koninkrijk)
Grote
770,3 kB
Halton JTH - fr
Type
Datasheet
Taal
Frans (Frankrijk)
Grote
776,8 kB