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Halton TRB – Conical diffuser

Easy to clean and maintain.

  • Suitable for both heating and cooling applications
  • Supply air jet velocity is effectively reduced due to high mixing effect
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Overview

  • Horizontal or vertical air supply
  • Suitable for both heating and cooling applications
  • Supply air jet velocity is effectively reduced due to high mixing effect
  • Installation flush to the ceiling, or exposed (especially in high spaces)
  • Adjustable throw pattern and pressure drop
  • Circular duct connection; gasket in sizes 100 … 400 mm
  • Openable cone module enables cleaning of the diffuser and ductwork.

Accessories

  • Plenum options with measurement and adjustment functions

Quick selection

Values with adjustment module (MSM) fully open.


Fig. 1. Quick selection for diffuser with radial jet, unit l/s

 


Fig. 2. Quick selection for diffuser with radial jet, unit m3/h

 


Fig. 3. Quick selection for diffuser and plenum with radial jet, unit l/s

 


Fig. 4. Quick selection for diffuser and plenum with radial jet, unit m3/h

Dimensions and weight

NS
[mm]
ØW
[mm]
H
[mm]
H1
[mm]
ØD
[mm]
Weight
[kg]
100 286 97 9 99 1.1
125 286 97 9 124 1.1
160 286 97 9 159 1.1
200 354 106 10 199 1.5
250 438 116 11 249 2.0
315 545 130 13 314 3.0
400 682 148 14 399
500 845 168 15 499 7.1
630 1055 195 16 629 6.8

 

Halton TRB with Halton Pop PDI plenum


Fig. 5. Halton TRB with Halton Pop PDI plenum, externally positioned connection spigot

 


Fig. 6. Halton TRB with Halton Pop PDI plenum, internally positioned connection spigot

TRB W
[mm]
PDI ØD
[mm]
ØD1
[mm]
L
[mm]
W1
[mm]
H
[mm]
H1
[mm]
L1
[mm]
Weight
[kg]
100 286 100-100 99 102 308 282 172 168 3.8
125 286 100-125 99 127 308 282 172 168 3.8
286 125-125 124 127 308 282 172 168 3.9
160 286 125-160 124 162 308 282 172 168 3.8
286 160-160 159 162 458 358 239 280 6.1
200 354 160-200 159 202 458 358 239 280 6.4
354 200-200 199 202 458 358 239 280 6.5
250 438 200-250 199 252 458 358 239 280 6.9
438 250-250 249 252 520 480 359 280 10.2
315 545 250-315 249 317 520 480 359 280 11.0
545 315-315 314 317 520 480 359 280 11.2
400 682 315-400 314 402 520 480 359 280

Material

 Part Description  Note
 Frame Galvanised / Aluminium  Sizes 100 … 500 / 630 mm
 Cone module Galvanised / Aluminium  Sizes 100 … 500 / 630 mm
 Finishing Epoxy-painted / White (RAL 9003)  Special colours available

Function


                  Compact Jet                                               Radial Jet

Halton TRB is a conical ceiling diffuser with an adjustable flow pattern.
The horisontal radial jet is used mainly in cooling applications and the vertical compact jet with warm supply air in heating applications.

The supply air pattern is adjusted by rotating the cone module into the desired position.
The recommended maximum temperature difference between supply air and room air in cooling applications is 10 °C.

Installation


Fig. 7. Halton TRB diffuser connected to a Halton Pop PDI plenum

The diffuser is connected usually to balancing plenum Halton Pop PDI. Alternatively, it can be connected direct to the duct by riveting or screwing. In that case, minimum safety distance to the next T-branch or curve is three times the duct diameter (3xD).

Commissioning


Fig. 8. Adjustment of airflow of diffuser and plenum combination

Airflow control

The diffuser itself has no airflow adjustment. To adjust and measure the supply airflow rate, the diffuser shall be combined with Halton Pop PDI balancing plenum with measurement and adjustment module MSM. In case of exhaust air, use of adjustment module MEM is recommended. It is not possible to measure exhaust airflow rate with adjustment module MEM.

Open the front plate and pass the tubes and control spindle through the front panel (Fig. 8.). Replace the front panel. Measure the differential pressure with a manometer. The flow rate is calculated using the formula below:

where

  • qv           Airflow rate [l/s] or [m3/h]
  • ∆pm      Measured pressure [Pa]
  • k            The k factor (see the table below)

Adjust the airflow rate by rotating the control spindle until the desired airflow rate (pressure difference) is achieved.

Set the tubes and spindle back into the plenum. Damper position can be locked with a knurled head screw of the adjuster.

Duct connection (PDI) k factor of MSM adjuster, opening >0 [l/s]
> 8D Min. 3D
100 5.7 7.5
125 9.6 12.6
160 16.4 21.9
200 26.3 31.0
250 47.1 51.5
315 78.8

 

Duct connection (PDI) k factor of MSM adjuster, opening >0 [m3/h]
> 8D Min. 3D
100 20.6 27.0
125 34.4 45.4
160 59.0 78.8
200 94.8 111.6
250 169.5 185.4
315 283.6

Servicing

Detach the cone module of the diffuser and clean the parts by wiping with a damp cloth.
Reinstall the cone module.

Specification

The ceiling diffuser has a steel (or aluminium) casing with an adjustable cone module and a spigot with integral gasket for connection to the circular duct.

The throw pattern of the diffuser is adjustable in radial or compact jet.

Order code

TRB-D, CO-ZT

Main options
D = Diffuser duct connection size [mm] 100, 125, 160, 200, 250, 315, 400, 500, 630
Other options and accessories
C = Colour
SW Signal white (RAL 9003)
X Special colour (RAL xxxx)
ZT = Taylored product
N No
Y Yes (ETO)
Sub products and accessories (ordered separately)
Halton Pop PDI Balancing plenum

Order code example

TRB-250, CO=SW, ZT=N

References stored

Diffusers stored

10000686 TRB-125,CO=W,ZT=N
10000687 TRB-160,CO=W,ZT=N
10000688 TRB-200,CO=W,ZT=N
10000689 TRB-250,CO=W,ZT=N
10000690 TRB-315,CO=W,ZT=N

Accessories stored

10003697 TRI/N 125-125 + MSM
10003698 TRI/N 160-160 + MSM
10003699 TRI/N 250-250 + MSM
10003700 TRI/N 315-315 + MSM
10003702 TRI/N 200-200 + MSM

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