


Halton Jaz JTH is perfectly suited for installations with variable airflow 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 horisontal. To match with the different interiors Halton Jaz JTH has several outlook options.
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 |
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, | Special colours available |
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 |
Fig.1. Front panel size 595x595 mm, round pattern (P=R)
Fig.2. Front panel size 595x595 mm, star pattern (P=S)
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.
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 |
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.
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.
Halton Jaz 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.
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
CO = Colour
W White (RAL 9010), standard
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
Y Yes
JTH/S-200-495-R, CO=W,AT=W, IN=3, OM=YS, ZT=N
Halton JTH uk | Type Datasheet | Language English (United Kingdom) | Size 770,3 kB |
Halton JTH - fr | Type Datasheet | Language French (France) | Size 776,8 kB |