Halton Jaz JDB – Diffuser with side slot

Overview

• Ceiling diffuser with side slot in circular shape
• Suitable for supply and exhaust
• Installation either directly to ductwork or to balancing plenum
• Detachable front panel enables the cleaning of the diffuser and ductwork
• Deflector panels for direction of flow pattern in 1-4 directions
• Circular duct connection with rubber gasket

Accessories

• Set of deflector panels provide control flow pattern direction.
• Balancing plenum with measurement and adjustment functions
• Installation panel for modular ceiling

Product models

• JDB/S, solid front panel
• JDB/P, perforated front panel
• Direct installation to the ceiling opening
  • Standard T-bar ceiling
  • Clip-in ceiling

Quick selection

Dimensions and weight

Halton Jaz JDB, basic model (WS=NA)

Halton Jaz JDB, ceiling integrated model (WS = T or C)

WS-T  =  Standard T-bar, tile 600×600
WS-C  =  Clip-in ceiling, tile 600×600

Weight

Material

Accessories

Installation panel (PI)

Function

• Air is supplied into the space through the side slots and mixed with the room air outside the diffuser.
• Recommended maximum air temperature difference between supply and room air is 10 °C.
• The throw pattern can be deflected in different (1, 2 and 3) directions with the deflection panels.

Product models

Halton Jaz JDB/S (solid front panel)

 Halton Jaz JDB/P (perforated front panel)

 Halton Jaz JDB, ceiling integrated model (WS=T or C)

Installation

Fig.1. Halton Jaz JDB (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 is not used.

Installation in suspend ceiling

Installation with ceiling panel (PI)

Installation with integrated ceiling model (WS)

Installation with Halton TRI or Halton TRH

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 and TRH)

Option 2: Diffuser collar installed internally (Halton TRI) 

The technical performance for the combination of supply air diffuser and plenum is presented separately for these two different installation cases.

Adjustment

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)

Servicing

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.

Option with balancing plenum

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.

Specification

The diffuser shall be made of painted steel with a white (RAL 9003) 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.

Alternative 1: No balancing plenum

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.

Alternative 2: Option with balancing plenum

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.

Order code

JDB/S-D; CO-WS-ZT

S = Model
S      Solid front panel
P      Perforated front panel

D = Duct connection size (mm)
125, 160, 200, 250, 315

Other options and accessories

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

WS = Ceiling integrated model
NA     Not assigned
T        Standard T-bar ceiling, tile 600×600
C        Clip-in ceiling, tile 600×600 (Dampa)

ZT  = Tailored product
N        No
Y        Yes (ETO)

Sub products

DP        Direction set
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

 Code example

JDB/S-200, CO=SW, WS=NA, ZT=N