Halton Jaz Rain Ceiling (JRC ) – Perforated diffuser

• Perforated diffuser for integrated installation with suspended T-bar ceiling
• Excellent indoor climate conditions with horizontally directed supply air and high mixing effect
• Suitable for air supply and exhaust
• Installation either directly to ductwork or to balancing plenum
• Easily openable front plate for convenient cleaning of the diffuser and ductwork
• Circular duct connection with rubber gasket

Accessories

• Deflector panels for providing the flow pattern direction
• Balancing plenum with measurement and adjustment functions
• Installation panel for modular ceiling

Halton Jaz Rain Ceiling with Halton TRI plenum

Halton Jaz Rain Ceiling with Halton TRH plenum

  
Fig.1. Halton TRI                                             Fig.2. Halton TRH

Fig.3.  Deflection panels option

The air is supplied horizontally into the space through the perforated front panel of the diffuser.

The supply air pattern can be deflected radially in the different directions desired (1, 2, 3 and 4) with separate deflector panels (delivered as accessory).

Diffuser can also be used as an exhaust unit.

The recommended maximum temperature difference between supply and room air as follows:

• 8 °C for 4- and 3 –way air supply direction
• 6 °C for 2- and 1–way air supply direction

Fig.4. Installation above list                       Fig.5. Installation under list

The diffuser is available in size 595×595 for direct installation to the modular T-bar ceiling (600×600).

Ceiling installation for standard sizes can be made above or below T-bars (Fig.4. and 5.).

The diffuser is connected either direct to the duct by screwing or riveting, alternatively to the Halton’s balancing plenums Halton TRI or Halton TRH.

Direct the flow pattern in the desired directions by installing the deflector panels on the perforated front panel to meet the required specifications (4 way direction in standard delivery, see Fig.6.).

Fig.6. Deflection panel options

Key
R4        Radial jet, 4 direction
R3        Radial jet, 3 direction
R2        Radial jet, 2 direction
R1        Radial jet, 1 direction
E          Exhaust

A recommended minimum safety distance upstream of the diffuser is normally 3 x duct diameter.

Installation in suspended ceiling

Recommended opening dimensions when installing to the drywall or other panel celilings.

Installation with plenum

The collar in Halton’s TRI can be installed either internally or externally on the bottom of plenum. The height of unit is presented in the tab Dimension.

A recommended minimum safety distance upstream of the plenum is normally 3 x duct diameter.

The technical performance for the combination of Halton Jaz Rain Ceiling diffuser and Halton plenum is presented separately for different installations.

Fig.7. Installation with Halton TRI plenum

Opening the diffuser

Open the front panel using some suitable thin material (like plastic sheet – Fig.8.). Push the sheet on the slot between front panel and chamber on the side where the Halton logo is located (distance about 50 mm from the corners). Pull slightly to open the front panel.

Detach the open front panel by pressing the hinge from inside (Fig.9.); reassembly it by pulling it against the hinges.

Close the front panel by pushing it until the springs lock.

Fig.8. Open with thin plastic sheet

Fig.9. Press the hinge from inside

Halton Jaz Rain Ceiling diffuser does not include any separate airflow adjustment.

In order to enable the adjustment and measurement of airflow rate it will be recommended to connect the diffuser to Halton TRI or Halton TRH plenum. The supply airflow rate is determined by using the plenum’s measurement and adjustment module.

Open the diffuser’s front panel and pass the tubes and control spindle through the hole in perforation. Close then the front panel.

Measure the differential pressure using a suitable 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. If needed lock the damper position with the screw in module.

Replace the tubes and spindle into the plenum.

Detach the front panel of the diffuser and let it balance on the hinges.

Wipe the diffuser casing and front panel with damp cloth. Ensure that the deflector panels are directed as requested. After cleaning reattach the front panel.

Option with balancing plenum

Remove the measurement and adjustment module by gently pulling from the shaft; not from the control spindle or measurement tubes. Wipe the components with damp cloth instead of immersing in water. Wipe also the inner part of the plenum; detach the attenuation material if needed.

Reassemble the module by pushing the shaft until the unit meets the stopper.

Push the front panel back into casing so that the springs lock.

The diffuser is installed flush with the ceiling surface. The diffuser is made of powder painted galvanized steel with a white standard colour (RAL 9003). Air is supplied through the perforated front panel in order to ensure efficient mixing of supply air. The front panel is equipped with direction plate for 4-way air diffusion as standard. Set of deflection panels is available as accessory for directing the throw pattern according request.

The diffuser has a detachable front panel providing access to the duct and/or plenum.

The diffuser is installed alternatively to the balancing plenum or direct to the duct. Balancing plenum has a detachable measurement and adjustment module, attenuation material and cleanable structure.

JRC-D-A, CO-ZT

D = Size of duct connection (mm)
100, 125, 160, 200, 260, 315

A = Diffuser front panel size (mm)
420, 600

Other options and accessories

CO = Colour
SW    Signal white (RAL 9003)
X        Special colour (RAL xxxx)

ZT  = Tailored product
N       No
Y       Yes (ETO)

Sub products

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

Set of deflection panels (DP)

Code example

JRC-125-420, CO=SW, ZT=N