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Plenum for grille
Plenum for grille

Halton BDR – Plenum for grilles

Ideal for spaces that need customization in grille sizes

  • Plenum for connecting supply/exhaust grille to ductwork
  • Ensures proper function of the supply air diffuser

 

Overview

  • Plenum for connecting supply/exhaust grille to ductwork
  • Ensures proper function of the supply air diffuser
  • Wide range of grille dimensions and models
  • Spring clips fastening of the grille
  • Access for ductwork cleaning

Product models and accessories

  • Model with sound attenuation material
  • Detachable airflow rate measurement and adjustment module

Dimensions

Selectable dimension Determined dimension Note
L
(Nominal length)
Inner dimension always L-5 mm Nominal length is selected according to the length of the attachable grille
H
(Nominal height)
Inner dimension always H-5 mm Nominal height is selected according to the length of the attachable grille
D
(Size of duct connection)
W1 = D/2+30 mm For BDR/S-T and BDR/S-S
W1 = W/2 For other configurations with W1 dimension

BDR_S-B_dimensions
Fig.1.
 Standard model with back connection (BDR/S-B)

BDR_S-T_dimensions

Fig.2. Standard with top connection (BDR/S-T)

BDR_S-S_dimensions

Fig.3. Standard with side connection (BDR/S-S)

BDR_L-B_dimensions

Fig.4. L-shape with back connection (BDR/L-B)

BDR_L-T_dimensions

Fig.5. L-shape with top connection (BDR/L-T)

BDR_L-L_dimensions

Fig.6. L-shape with left connection (BDR/L-L)

BDR_L-R_dimensions

Fig.7. L-shape with right connection (BDR/L-R)

BDR_T-B_dimensions

Fig.8. T-shape with back connection (BDR/T-B)

BDR_T-T_dimensions

Fig.9. T-shape with top connection (BDR/T-T)

BDR_T-S_dimensions

Fig.10. T-shape with side connection (BDR/T-S)

Material

BDR_material

 No. Part Material Note
1 Spigot Galvanised steel
2 Plenum box Galvanised steel
3 Insulation Mineral wool or polyester fibre The mineral wool is fixed with nails

Accessories

Accessory Code Description
Sound attenuation IN Mineral wool on 2 sides in
the BDR plenum
Sound attenuation IN Mineral wool on 5 sides in
the BDR plenum
Airflow measurement and
adjustment unit
MSM For supply installation
(for spigot with diameter Ø 315)
Airflow measurement and
adjustment unit
MEM For exhaust installation

Product models

Location of duct connection

Model
S
(Standard)
L
(L-shape)
T
(T-shape)
B
(Back)

*BDR-S-B_overview_left

BDR-L-B_overview_left

*

T
(Top)
BDR-S-T_overview_left BDR-L-T_overview_left BDR-T-T_overview_left
S
(Side)
BDR-S-S_overview_left BDR-T-S_overview_left
L
(Left)
BDR-L-L_overview_left
R
(Right)
BDR-L-R_overview_left

* Available only when height is over 150 mm.

Function

BDR_function-2

The duct pressure and air velocity are reduced inside the Halton BDR plenum box. Consequently supply air is evenly spread over the surface of the grille. The airflow rate can be adjusted using the optional measurement and adjustment module MSM.

Installation

 

BDR-S-T_installation
The Halton BDR plenum is connected to the distribution ductwork with a spigot.
When equipped with a measurement and adjustment module (1), the recommended safety distance upstream of the device is at least 3xD, in order to ensure a reliable airflow rate measurement.

The unit’s control spindle must not be excessively bent.

With wall installations the required hole size is at least (L x H).

The spigot comprises two grooves to enable the grille springs to lock.

 

Clip fastening of grille (standard)

Adjustment

In order to enable airflow adjustment and measurement of airflow rate, it is recommended that the grille be connected to the plenum equipped with the MSM module.
The supply flow rate is determined by using the measurement and adjustment module MSM.

Detach the grille and pass the tubes and control spindle through the grille.
Push the grille back into place.
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.
Replace the tubes and spindle into the plenum and replace the grille.

The k-factor for installations with different safety distances
(D=duct diameter)

Supply air

D >8xD min 3xD
125 9.9 12.6
160 16.9 21.9
200 28.3 31.0
250 47.9 51.5
315 78.6

Exhaust

The airflow rate is determined by measuring the differential pressure between the measurement tap on the Halton BDR plenum and the room air.
The corresponding airflow rate is calculated using the formula above.
The desired airflow rate can be adjusted by turning the control spindle of the adjustment unit MEM.

Servicing

Remove the measurement and adjustment module by gently pulling the shaft (not the control spindle).

Wipe the parts with a damp cloth, instead of immersing in water.

Reassemble the measurement and adjustment module by pushing the shaft back into place until the module meets the stopper.

Specification

The plenum is made of galvanised steel.

The plenum will comprise an airflow measurement and adjustment unit.
The grille is detachable to provide access to the measurement and adjustment module in the plenum.

The plenum has mineral wool as sound insulation material.

The plenum will reduce duct pressure and air velocity in order to supply air through the whole face area of the grille and improve the air distribution quality.

Order code

BDR/M-L-H-A; D-N-GM-FS-AO-AM-MM-ZT

M = Model
S       Standard
L        L-shape
T       T-shape

L = Length (mm)
200, 201, 202, 203, … +1, .., 20000

H = Height (mm)
50, 51, 52, 53, … +1, .., 670

A = Location of duct connection
B        Back
T        Top
S        Side
L         Left
R        Right

Other options and accessories

D = Size of duct connection (mm)
100, 125, 160, 200, 250, 315, 355, 400, 450, 500

N = Number of duct connections
1, 2, 3, 4 …, 10

GM = Model of grille
AGC       AGC
AHD       AHD
ALE        ALE
AWE       AWU
FLE         FLE
FLU        FLU
HDF       HDF
WDD      WDD

FS = Fastening of grille
CL          Clips
SF          Screw fastening
CC          Concealed screw fastening
NA          Not assigned

AO = Sound attenuation options
2             Sound attenuation on 2 sides
5             Sound attenuation on  sides
NA          Not assigned

AM = Sound attenuation material
P             Polyester fibre
M            Mineral wool
NA          Not assigned

MM = Measurement and adjustment module
S            MSM in each spigot (supply)
E            MEM in each spigot (exhaust)
NA         Not assigned

ZT = Tailored product
N           No
Y           Yes (ETO)

Code example

BDR/L-1000-200-T, D=100, N=1, GM=AGC, FS=CL, AO=NA, AM=NA, MM=NA, ZT=N

Downloads

Halton BDR – Plenum for grilles
Data
en
Halton BDR – Liitäntälaatikko
Data
fi
BDR Boîte de raccordement pour grille
Data
fr
BDR Anslutningslåda för galler
Data
se
Halton BDR - fr
Datasheet
fr_FR
451.40 KB
  • Max. file size: 16 MB.

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