




Halton’ s Jaz series of diffusers combine excellent performance with iconic design. The aerodynamic construction is silent in operation and efficient to buy as smaller diffuser sizes is a possibility. The diffusers are available for both supply and exhaust ensuring architectural ceiling outlook.
The diffuser shall be made of painted steel with a white (RAL 9010) standard colour. Air shall be introduced into the space through the side slot, ensuring a high mixing rate. Flow pattern of the diffuser shall be adjustable in 1, 2, or 3 -way directions by shaping the deflector.
The diffuser shall have a spigot with integral gasket for connection to circular duct.
The diffuser shall have a detachable solid or perforated front panel to provide access to the duct.
The diffuser shall be connected to a balancing plenum equipped with a measurement and adjustment module.
The diffuser shall have a detachable solid or perforated front panel to provide access to the measurement and adjustment module in the plenum.
The balancing plenum shall have a spigot with integral gasket for airtight duct connection.
The balancing plenum shall comprise sound attenuation material made of polyester fibre with a washable surface.
NS | W | H | ØD |
125 | 300 | 116 | 124 |
160 | 300 | 121 | 159 |
200 | 450 | 126 | 199 |
250 | 450 | 136 | 249 |
315 | 600 | 146 | 314 |
NS | W | W1 (WS=T) | W1 (WS=C) | H | ØD |
125 | 300 | 595 | 600 | 119 | 124 |
160 | 300 | 595 | 600 | 124 | 159 |
200 | 450 | 595 | 600 | 129 | 199 |
250 | 450 | 595 | 600 | 139 | 249 |
WS-T = Standard T-bar, tile 600x600
WS-C = Clip-in ceiling, tile 600x600 (Dampa)
NS | kg |
125 | 1.5 |
160 | 1.5 |
200 | 3.3 |
250 | 3.4 |
315 | 6.6 |
Part | Material | Note |
Upper plate | Steel | |
Upper plate, ceiling integrated model (WS) | Steel | |
Front panel | Steel | |
Deflection panels (DP) | Foamed plastic | |
Coupling sleeve with gasket | Galvanised steel | Gasket rubber compound |
Installation panel (PI) | Steel | |
Finishing | Painted White (RAL 9010) | Special colour available |
Accessory | Code | Description |
Deflector panel | DP | A set of panels for providing the flow pattern in |
Balancing plenum | TRI | For balancing and equalising the airflow |
Balancing plenum | TRH | For balancing and equalising the airflow |
Installation panel | PI-N | For standard 600x600 module ceiling installation, |
PI-C | For Clip-In module ceiling installation, |
Fig.1. Halton Jaz JDA (solid) installed with installation panel (PI)
The diffuser is connected either directly to the duct by screwing or riveting, or alternatively to the Halton TRI or Halton TRH balancing plenum.
The desired flow pattern is selected during installation with the deflector panels, according to the installation manual.
The recommended minimum safety distance upstream of the diffuser is 3xD.
In an exhaust application deflector panel is not used.
Ø D | Ø d |
124 | 160 |
159 | 215 |
199 | 255 |
249 | 320 |
314 | 405 |
The ceiling panel will enable installation in different modular suspend ceiling tiles.
Code | Description |
PI-N | T-bar ceilings |
PI-C | Clip-in (Dampa) |
Code | Description |
WS-T | T-bar ceilings |
WS-C | Clip-in (Dampa) |
Diffuser collar of Halton TRI plenum can be installed either internally or externally onto the bottom of the plenum. The height of the unit for the external installation is presented in the table below. When the collar in Halton TRI is installed internally, the heights H and H1 are reduced by 60 mm (see images below).
Option 1: Diffuser collar installed externally (Halton TRI or Halton TRH)
Option 2: Diffuser collar installed internally (Halton TRI)
NS | Ø D1 | Halton TRI | H | H1 |
125 | 100 | TRI-100-125 | 91 | 248 |
125 | 125 | TRI-125-125 | 91 | 278 |
160 | 100 | TRI-100-160 | 96 | 253 |
160 | 125 | TRI-125-160 | 96 | 283 |
160 | 160 | TRI-160-160 | 96 | 323 |
200 | 125 | TRI-125-200 | 101 | 288 |
200 | 160 | TRI-160-200 | 101 | 328 |
200 | 200 | TRI-200-200 | 101 | 378 |
250 | 125 | TRI-160-250 | 111 | 338 |
250 | 160 | TRI-200-250 | 111 | 388 |
250 | 200 | TRI-250-250 | 111 | 452 |
315 | 200 | TRI-200-315 | 121 | 398 |
315 | 250 | TRI-250-315 | 121 | 462 |
315 | 315 | TRI-315-315 | 121 | 508 |
NS | Ø D1 | Halton TRH | H | H1 |
125 | 100 | TRH-100-125 | 80 | 232 |
125 | 125 | TRH-125-125 | 80 | 260 |
160 | 100 | TRH-100-160 | 85 | 237 |
160 | 125 | TRH-125-160 | 85 | 265 |
160 | 160 | TRH-160-160 | 85 | 297 |
200 | 125 | TRH-125-200 | 90 | 270 |
200 | 160 | TRH-160-200 | 90 | 302 |
200 | 200 | TRH-200-200 | 90 | 354 |
250 | 125 | TRH-160-250 | 100 | 312 |
250 | 160 | TRH-200-250 | 100 | 364 |
250 | 200 | TRH-250-250 | 100 | 416 |
315 | 200 | TRH-200-315 | 110 | 374 |
315 | 250 | TRH-250-315 | 110 | 426 |
315 | 315 | TRH-315-315 | 110 | 491 |
The technical performance for the combination of supply air diffuser and plenum is presented separately for these two different installation cases.
The diffuser itself has no means for airflow adjustment.
In order to enable airflow adjustment and measurement of airflow rate it is recommended to connect the diffuser to the HaltonTRI/TRH balancing plenum. The supply flow rate is determined by using the measurement and adjustment module MSM.
Open the front plate and pass the tubes and control spindle through the side slot of the diffuser. Replace the front panel.
Measure the differential pressure with a manometer. The flow 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.
Set the tubes and spindle back into the plenum and push back the diffuser front panel.
The k-factor for installations with different safety distances (D = duct diameter)
TRI | > 8xD | min 3xD |
100 | 6.0 | 7.5 |
125 | 9.9 | 12.6 |
160 | 16.9 | 21.9 |
200 | 28.3 | 32.0 |
250 | 47.9 | 51.5 |
315 | 78.6 | - |
TRH | > 8xD | min 3xD |
100 | 6.5 | 7.5 |
125 | 10.8 | 12.6 |
160 | 19.4 | 21.9 |
200 | 29.7 | 31.0 |
250 | 48.8 | 51.5 |
Open the front panel of the diffuser and clean the parts by wiping them with a damp cloth.
Push the front panel back into place so that the springs lock.
Open the front panel of the diffuser.
Remove the measurement and adjustment module by gently pulling the shaft.
Note: 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 unit meets the stopper.
Push the front panel back into place so that the springs lock.
The diffuser shall be made of painted steel with a white (RAL 9010) standard colour. Air shall be introduced into the space through the side slot, ensuring a high mixing rate. Flow pattern of the diffuser shall be adjustable in 1, 2, or 3 -way directions by shaping the deflector.
The diffuser shall have a spigot with integral gasket for connection to circular duct.
The diffuser shall have a detachable solid or perforated front panel to provide access to the duct.
The diffuser shall be connected to a balancing plenum equipped with a measurement and adjustment module.
The diffuser shall have a detachable solid or perforated front panel to provide access to the measurement and adjustment module in the plenum.
The balancing plenum shall have a spigot with integral gasket for airtight duct connection.
The balancing plenum shall comprise sound attenuation material made of polyester fibre with a washable surface.
S = Model
S Solid front panel
P Perforated front panel
D = Nominal duct connection size
125, 160, 200, 250, 315
CO = Colour
W White (RAL 9010), standard
X Special colour (RAL)
WS = Ceiling integration model
NA Not assigned
T Standard T-bar ceiling, tile 600x600
C Clip-in ceiling, tile 600x600 (Dampa)
ZT = Tailored product
N No
Y Yes
DP Deflector panel
PI Panel for ceiling installation:
PI-N T-bar ceilings
PI-C Clip-in (Dampa)
Balancing plenums with airflow controls and sound attenuation
Halton TRI/S for supply air
Halton TRI/E for exhaust air
Halton TRH/S for supply air
JDA/S-200, CO=W, WS=NA, ZT=N
Halton JDA - fr | Type Datasheet | Language French (France) | Size 1,2 MB |