TRH - Plenum

Plenum for diffuser

Airtight plenum for general use.

  • Plenum ensuring proper function of supply air ceiling diffuser and connecting to ductwork
  • Flexibility for levelling diffuser elevation
  • Detachable measurement and airflow rate adjustment module
  • Effective sound attenuation
  • Access for ductwork cleaning

The balancing plenum shall be made of galvanised steel and shall have a robust and airtight construction.

The airflow rate measurement and adjustment module shall be available for supply application. The measurement and adjustment module shall be adjustable without opening the device.

The balancing plenum shall have a spigot with integral gasket for airtight duct connection and a plug for ductwork pressure testing.

The balancing plenum shall attenuate duct noise. The sound attenuation material shall be made of polyester fibre with a washable surface or mineral wool located on three sides of plenum.

Halton TRH

Plenum for diffusers

  • Plenum ensuring proper function of supply air ceiling diffuser and connecting to ductwork
  • Flexibility for levelling diffuser elevation
  • Detachable measurement and airflow rate adjustment module
  • Effective sound attenuation
  • Access for ductwork cleaning

Dimensions


 

NS A B Ø D Ø d H L1 L2
100/125 63 56 99 127 152 281 281
100/160 63 56 99 162 152 281 281
125/125 63 56 124 127 180 431 431
125/160 63 56 124 162 180 431 431
125/200 63 56 124 202 180 431 431
125/250 63 56 124 252 180 431 431
160/160 63 56 159 162 212 431 431
160/200 63 56 159 202 212 431 431
160/250 63 56 159 252 212 431 431
200/200 63 56 199 202 245 400 550
200/250 63 56 199 252 245 400 550
200/315 63 56 199 317 245 400 550
250/250 63 56 249 252 295 450 600
250/315 63 56 249 317 295 450 600
250/400 63 56 249 402 295 450 600
315/315 63 56 314 317 360 500 650
315/400 63 56 314 402 360 500 650 

Material

 Part  Material  Note
 Casing  Galvanised steel  
 Collar  Galvanised steel  
 Attenuation  Polyester fiber   Alternatively mineral wool
 Spigot with gasket  Galvanised steel   Gasket rubber compound
 Measurement and
 adjustment module
 (MSM / MEM)
 Body:              Aluminium
 Plate:             Galvanised steel
 Brackets:        Galvanised steel
 Plastic parts:  Polypropylene (PP)
 Spindle:         Stainless steel
 

Accessories

 Accessory Code  Description
 Airflow measurement and
 adjustment unit
 MSM  Adjustment and measurement module
  for supply airflow rate
 Airflow adjustment unit  MEM  Adjustment module for exhaust airflow rate
 Sound attenuation material  AT  Internal sound attenuation material
 of mineral wool or polyester fibre
 Sides of sound attenuation  IN  3 sides or 5 sides

Function

Halton TRH balancing plenum equalizes the supply airflow by reducing the flow velocity .

Air is spread evenly into the diffuser ensuring proper function. 

A range of diffusers can be connected to the distribution ductwork using TRH-plenum, which improves their functional characteristics considerably.

The balancing plenum also attenuates duct noise.

Installation

The plenum is connected to the ductwork by use of spigot.

Adjustment for the desired airflow rate can be performed after installation.

The recommended safety distance before Halton TRH plenum is at least 3*D.

The diameter of installation hole in ceiling tile shall be at least 5 mm larger than the diffuser connection.

Adjustment

The supply flow rate is determined by using the measurement and adjustment module MSM.

The tubes and control spindle are passed through the diffuser. 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. If needed lock the damper position with a screw. Replace the tubes and spindle into the plenum.

Servicing

Open or detach the diffuser. Detach the measurement and adjustment module by pulling gently from the casing (not from the control spindle or measurement tubes). Wipe the parts with a damp cloth, instead of immersing in water.

The measurement and adjustment module is remounted by pushing the body until it meets the stopper.

The sound attenuation material within the plenum can also be removed, to enable cleaning of the inner side of the plenum. Close or replace the diffuser after cleaning.

Specification

The balancing plenum ismade of galvanised steel and has a robust and airtight construction.

The airflow rate measurement and adjustment module are available for supply application and adjustment module for exhaust application. The measurement and adjustment module is adjustable without opening the device.

The balancing plenum has a spigot with integral gasket for airtight duct connection and a plug for ductwork pressure testing.

The balancing plenum attenuates duct noise. The sound attenuation material is made of polyester fibre with a washable surface or mineral wool located on three or five sides of plenum.

Order Code

TRH/S-D-E

D = Diameter of duct connection
       100, 125, 160, 200, 250, 315 

E = Diameter of diffuser connection
      100, 125, 160, 200, 250, 315, 400
 

Other options and accessories

AT = Sound attenuation material
     
   W      Mineral wool
        D       Polyester fibre
        N       No sound attenuation

IN  = Sides of sound attenuation
     
   3       Sound attenuation on 3 sides
         5       Sound attenuation on 5 sides
         N       No sound attenuation

OM = Measurement and adjustment module
 
        YS     MSM (Supply)
         YE     MEM  (Exhaust)
         NA     No measurement or adjustment module

ZT = Tailored product
         N       No
         Y       Yes

Code example

          TRH-100-125,AT=D, IN=3, OM=YS, ZT=n

Downloads & Media

Halton TRH - fr
Type
Datasheet
Taal
Frans (Frankrijk)
Grote
1,4 MB
Halton TRH - gb
Type
Datasheet
Taal
Engels (Verenigd Koninkrijk)
Grote
634,1 kB