Tellus-PBM-Opus

TELLUS-PBM-OPUS

CIRCULAR SUPPLY DIFFUSER FOR EXPOSED INSTALLATION

Tellus-PBM-OPUS is a circular supply air diffuser for exposed installation, combining the well-established Tellus-OPUS diffuser with a patented modular plenum solution. The PBM (Plenum Box Modular) enables conversion between exposed installation and ceiling installation, allowing the product to be rebuilt instead of replaced. Tellus-PBM-OPUS retains the proven performance of the Tellus-OPUS diffuser while introducing adjustable airflow control and a new level of adaptability through its modular design.

Marketing highlights:

Patented modular plenum (PBM) enabling conversion between installation types
Possibility to rebuild without replacing the diffuser
Extended actual product lifetime in buildings with frequent changes
Adjustable Opus nozzles for flexible airflow pattern
Prepared for X-SENS-TPDM sensor (Temperature, PIR, Diffuser Mounted)

General information

Application

Tellus-PBM-OPUS is a circular supply air diffuser designed for exposed installation. The diffuser is suitable for both constant and variable air volume systems and provides excellent induction and controllable air

distribution. With adjustable Opus nozzles, the airflow pattern can be adapted to suit different room layouts and applications. This makes the product particularly suitable for spaces with varying

requirements or changing use. The integrated PBM plenum enables the product to function as both an air distribution device and a measurement and regulation

unit. The modular PBM design allows the product to be adapted if installation conditions change, for example when converting from

exposed installation to ceiling installation. This makes the product well suited for buildings with frequent refurbishment or tenant changes.

Functional description

Tellus-PBM-OPUS distributes supply air through adjustable Opus nozzles located in the diffuser front.

The nozzles can be configured to different airflow patterns:

rotational
1-way
2-way (180° or 90°)

This enables precise control of air distribution and optimal adaptation to room geometry. The diffuser features a fixed slot height, allowing easier

commissioning.

The PBM plenum:

ensures even airflow distribution
incorporates an airflow adjustment damper
includes measurement outlets for commissioning
contributes to sound attenuation

The integrated damper can be locked in any position for accurate airflow adjustment. The product can be equipped with the X-SENS-TPDM sensor, integrating temperature measurement and presence detection (PIR), enabling demand-controlled ventilation.

Design

TellusPBM-OPUS features:

circular design for exposed installation
removable front panel with integrated Opus nozzles
adjustable airflow pattern
fixed slot height

The PBM plenum introduces a cylindrical, modular design replacing traditional fixed plenum solutions. PBM – Plenum Box Modular:

cylindrical plenum design
patented solution enabling conversion between installation types
adaptable between exposed installation and ceiling installation
modular construction allowing reconfiguration without replacing the diffuser

The modular design enables reuse of the product in new configurations, reducing the need for replacement.

Material and surfaces

The diffuser is manufactured in steel.

Standard finish:

Diffuser front powder coated in RAL 9006 gloss 30, and plastic

nozzles in RAL 9006, for an unpainted steel design.

Optional finishes:

Special RAL or NCS colours on request. The diffuser front and

plenum box will then be painted in same color.

Opus nozzles:

manufactured in ABS plastic

The PBM plenum:

manufactured in galvanised steel
internally lined with sound absorbing polyester material
equipped with EPDM rubber gasket on connection spigot

Commissioning

The PBM plenum includes:

integrated airflow adjustment damper
measurement outlets for airflow verification

The damper is accessible via the removable front panel.

This enables simple

commissioning, accurate airflow adjustment and easy rebalancing

if system requirements change.

Maintenance

The removable front panel provides easy access to:

damper
measurement points
internal components

Maintenance is minimal and typically limited to inspection and

cleaning.

The product is designed for long service life and stable

performance.

Environment

Tellus-PBM-OPUS is designed to support sustainable building

solutions by extending the actual service life of ventilation

products.

In modern buildings, ventilation products are often replaced due

to layout changes rather than technical limitations. The patented

PBM concept enables reuse by allowing the product to be rebuilt

and adapted between different installation types.

This reduces the need for replacement and contributes to:

reduced material consumption
lower waste generation
decreased environmental impact from production and transport

The product is designed for durability, easy maintenance and long-term performance.

Tekniske informationer

ØD	25dB(A) [m3/h]	30dB(A) [m3/h]	35dB(A) [m3/h]	25dB(A) [l/s]	30dB(A) [l/s]	35dB(A) [l/s]
100	97	122	151	27	34	42
125	144	180	220	40	50	61
160	270	324	371	75	90	103
200	389	454	522	108	126	145
250	338	558	720	94	155	200
315	558	684	792	155	190	220

Tellus-PBM-Opus	-	125	/	X5	/	1
\|		\|		\|		\|
1		2		3		4

1 Type

Tellus-PBM-Opus Swirl diffuser

2 Nominal size

100 mm

125 mm

160 mm

200 mm

250 mm

315 mm

3 Sensor

0 Without sensor

X5 X-Sens TPDM 5M

X1 X-Sens TPDM 1M

4 Exposed surface

0 None, galvanized steel

1 RAL 9003, gloss 30

2 RAL 9005, gloss 30

SL-NCS Special coat NCS

SL-RAL Special coat RAL

Downloads

Produktoplysninger

Product data sheet Tellus-PBM-Opus

TELLUS-PBM-O_PD_2026_07_03_DE_en 1,7 MB pdf

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Til generelle spørgsmål om produkter og tjenester kan du kontakte os på:
Tel.: +45 4914 6633

Angiv venligst et emne for din forespørgsel og dine kontaktoplysninger.
Tel.: +45 4914 6633

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