CENTRIFUGAL PERFORMANCE
Airflow and pressure
The centrifugal impeller moves air through ductwork. Use the fan curve to check the airflow available at the pressure your duct system needs.
Centro In Line Centrifugal Tube Extractor Fan Duct Mounting 315mm 12"
In stock
Only 4 left
SKU
CENTRO-315
BIM Objects
User Guides & Data Sheets
£178.23 £148.52
Commercial & Residential | Supply & Extract | 1-phase
- Supply or extract ventilation for commercial and residential ducted systems.
- 315 mm circular duct connections.
- Up to 1,340 m³/h (372 l/s) maximum airflow.
- 1-phase AC motor; compatible external speed control.
- Wall and ceiling mounting brackets supplied.
Commercial & residential ventilation
Blauberg CENTRO 315 315 mm Inline Centrifugal Fan
The standard CENTRO fan for 315 mm ductwork.
Blauberg CENTRO 315 is the largest standard model in the range, with a 315 mm duct connection and maximum airflow of 1,340 m³/h. It provides a 1-phase inline fan option for general building ventilation where the duty calls for this connection size and airflow capability.
Maximum airflow is 1,340 m³/h (372 l/s). Check the CENTRO 315 fan curve at your required system pressure, then use the dimensions and electrical data below to complete the selection.
315CENTRO model
1,340 m³/h (372 l/s)Maximum airflow
315 mmCircular duct connection
1-phaseElectrical supply
Inline centrifugal fans
Supply and extract ventilation
DUCT CONNECTION
315 mm circular ductwork
CENTRO 315 connects to 315 mm circular ductwork. Check the fan dimensions and required duty before confirming the installation.
INSTALLATION
Wall or ceiling mounting
Install in any mounting position using the fixing brackets supplied for wall or ceiling mounting. Provide access for inspection and maintenance.
MOTOR & IMPELLER
Thermal overload protection
The 1-phase external rotor motor includes ball bearings and integrated thermal protection with automatic restart. The impeller is dynamically balanced.
Check the full duty for 315 mm ductwork.
Use the CENTRO 315 performance curve to check airflow at the resistance of the proposed supply or extract system. Its 200 W motor rating and 48 dBA catalogue sound pressure at 3 m give additional information for selection; neither figure alone predicts the running cost or room sound of a finished installation.
View CENTRO 315 technical dataPlan access to your CENTRO 315.
The fan weighs 4.85 kg, with a catalogue overall length of 276 mm. The dimensional drawing is important when planning space around a 315 mm duct run. Brackets are supplied for wall or ceiling mounting, and the fan can be installed in any position in accordance with the guide. Keep the terminal box and cover accessible.
View CENTRO 315 technical data
Identify the standard 315 mm model clearly.
CENTRO 315 is the largest duct connection in the standard range, with up to 1,340 m³/h maximum airflow and a 200 W motor. Include the 1-phase, 50 Hz supply and 4.85 kg weight in the project details. Confirm the performance curve and available installation space rather than selecting on duct size alone.
View CENTRO 315 technical data
Plan the service space as well as the airflow.
A larger duct route needs room for the fan, its connections and future maintenance. CENTRO 315 can provide supply or extract ventilation when selected for the system duty. Agree the location, access and sound requirements before the ceiling or service enclosure is finished.
Talk to us about your projectInstallation & control
External speed control when the system needs it
A compatible thyristor speed controller or autotransformer can be specified separately for the 1-phase AC motor. Ball bearings, a dynamically balanced impeller and a continuous-operation rating are part of the standard design. Thermal overload protection has automatic restart, so isolate the supply before inspection or maintenance.
- Wall or ceiling mounting brackets supplied; install in any mounting position in accordance with the user guide.
- Follow the airflow direction marked on the casing and leave access to the terminal box and fan cover.
- For horizontal installations, follow the guide’s minimum 1 m straight inlet duct requirement. Keep the specified straight duct sections at the inlet and outlet.
- Have electrical connections made by a qualified electrician and follow the rating label on the supplied unit.
- Ductwork and compatible external speed controllers are supplied separately.
What is supplied?
The CENTRO 315 fan and wall or ceiling mounting brackets. Select ductwork and any external speed controller to suit the installation.
Keep the fan serviceable
Leave access for inspection and cleaning. The thermal protection has automatic restart: isolate the electrical supply before maintenance and follow the user guide.
Fan selection
Check CENTRO 315 against your design duty
Use the required airflow and total system resistance to check the fan curve. Bends, grilles, filters and duct length affect the airflow available; the catalogue maximum is not the delivered airflow in every installation.
CENTRO 315 technical data
| Specification | CENTRO 315 |
|---|---|
| Model | CENTRO-315 |
| Duct connection | 315 mm |
| Maximum airflow | 1,340 m³/h (372 l/s) |
| Electrical supply | 1-phase |
| Frequency | 50 Hz |
| Power | 200 W |
| Current | 0.88 A |
| Speed | 2655 rpm |
| Sound pressure at 3 m | 48 dBA |
| Transported air temperature | -25 to +50 °C |
| Unit ingress protection | IPX4 |
| Motor ingress protection | IP44 |
| Weight | 4.85 kg |
Sound pressure is the catalogue figure at 3 m. Installed sound depends on duty, ductwork and installation. Match the supply to the rating label on the supplied fan.
CENTRO 315 dimensions
| Specification | CENTRO 315 |
|---|---|
| D - duct connection | 315 mm |
| D1 | 400 mm |
| B | 414 mm |
| L - overall length | 276 mm |
| L1 | 40 mm |
| L2 | 55 mm |
| L3 | 40 mm |
The drawing identifies D, D1, B, L, L1, L2 and L3; the table gives the dimensions for this model. Allow additional room for connections and maintenance. Ask technical support for the model performance curve and acoustic data when finalising selection.
Technical advice
Technical support for CENTRO 315
Need to confirm the duty? Share the required airflow, system pressure and installation details with Blauberg UK technical support.
Frequently Asked Questions
1. What is a large inline extractor fan?
A large inline extractor fan, such as the Blauberg Centro-315, is a powerful ventilation device designed for high-performance air extraction in residential and commercial spaces. It is installed within the ductwork rather than on the wall or ceiling surface, making it ideal for concealed applications.
2. Are large centrifugal inline extractor fans better than axial fans?
Yes, large centrifugal inline extractor fans generally perform better than axial fans, especially for long duct runs and complex ventilation systems. They offer higher pressure handling and airflow capacity, making them more efficient for extensive ductwork and more demanding ventilation requirements.
3. How do you install a large inline extractor fan?
Installing a large inline extractor fan involves securing the unit to a wall or ceiling using the provided mounting brackets or an optional wire frame. It connects to the ventilation ducts, which can be flexible or solid. The electrical connection is made through the IP44-rated external mounting box, ensuring safety and protection from dust and water.
4. How big an inline exhaust fan do I need?
The size of the inline exhaust fan you need depends on the airflow requirements of your space. The Blauberg Centro-315, for example, has an airflow capacity of up to 1340 m³/hour (372 l/s), suitable for larger areas or spaces with extensive ductwork. Calculating the required airflow based on room size and ventilation needs will help determine the appropriate fan size.
5. Are large inline extractor fans quiet?
While large inline extractor fans are generally more powerful, the Blauberg Centro-315 is designed to operate relatively quietly, with a sound level of up to 48 dBA at a distance of 3 meters. This ensures minimal noise disturbance while maintaining effective ventilation.
6. Can large inline extractor fans handle long duct runs?
Yes, large inline extractor fans like the Blauberg Centro-315 are specifically designed to handle long duct runs and complex ventilation systems. Their centrifugal impeller with backward-curved blades and high-pressure handling capability make them ideal for such applications.
7. Where should a large inline extractor fan be placed?
A large inline extractor fan should be placed in a location that allows for optimal airflow and ease of maintenance. Common placements include voids, ceiling spaces, lofts, and plant rooms. For kitchen installations, it's recommended to add a filter to prevent grease build-up.
8. Do large inline extractor fans push or pull air better?
Large inline extractor fans are designed to handle both pushing and pulling air effectively. The advanced motor and impeller technology in fans like the Blauberg Centro-315 ensure efficient air movement in both directions, making them versatile for various installation requirements.
9. What are the benefits of using an larger inline extractor fan?
Benefits of using a larger inline extractor fan include higher airflow capacity, better pressure handling for long duct runs, energy efficiency, reduced noise levels, and versatile installation options. These fans are also more durable and require less maintenance, offering a reliable long-term ventilation solution.
10. How far can an larger inline extractor fan extract?
The extraction distance of a larger inline extractor fan depends on its airflow capacity and pressure handling capability. The Blauberg Centro-315 can handle static pressure over 500 Pa and has an airflow capacity of up to 1340 m³/hour (372 l/s), making it suitable for long duct runs and extensive ventilation systems. The exact extraction distance will vary based on the specific installation and ductwork design.
| EAN Number | 5060407915289 |
|---|---|
| Impeller Type | Centrifugal |
| Motor Type | AC Motor |
| Electrical Supply | 1 Phase 220/250 50/60Hz |
| Size | 315mm |
| Maximum Airflow Rate (l/s) | 372 |
| Maximum Airflow Rate (m3/h) | 1340 |
| Duct Connection Size | 315mm Dia |