TWINFLOW STDL
TWINFLOW STDL
The TWINFLOW STDL is a centrifugal box fan designed for external mounting, featuring backward curved impellers. It is available in sizes from 125 mm to 500 mm, with air volume flow rates up to 1.74 m³/s and static pressures up to 730 Pa. It operates at temperatures up to +60°C and is acoustically lined to reduce noise. The fan offers low specific fan powers and is available with EC motors for precise speed control.
- Sizes: 125 mm to 500 mm
- Air Volume Flow: Up to 1.74 m³/s
- Static Pressure: Up to 730 Pa
- Operating Temperature: Up to +60°C
- Construction: 1.2mm galvanised mild steel casing
- Motors: EC external rotor motors, IP44 rated
- Impellers: Backward curved centrifugal, dynamically balanced
The fan includes a variable speed drive, offering efficient performance with low tonal noise. It provides stepless speed control and complies with EcoDesign 1253/2014 standards, leading to energy savings.
Sound data is provided at standard air density, tested according to BS 848 Part 2:1985. The sound power level spectra are detailed for various models and speeds, indicating noise levels at different octave bands.
The TWINFLOW STDL is suitable for applications in toilets, hotels, schools, libraries, kitchens, factories, industrial units, warehousing, and offices.
Each STDL fan comes with a 12-month warranty.
Product coding examples include STDL200-1EC for circular spigot and STDL200-1EC-R for rectangular spigot options.
The document provides technical specifications and sound data for Elta Limited's TWINFLOW STDL series of fans, including product codes, dimensions, sound power levels, and available accessories.
The document lists various models of the TWINFLOW STDL series, including STDL500-1EC and STDL500-3EC, with control voltages, speeds (r/min), and sound power levels across different octave bands (63Hz to 8kHz).
Dimensions for each product code are provided in millimeters, detailing measurements such as A, B, C, D, E, F, G, H, J, K, L, and M.
Available accessories include EC electronic controllers, fast clamps, AV mounts, panel filters, electric heater batteries, and spigot silencers of varying lengths (300mm to 1200mm).
Elta Limited reserves the right to supply products that may differ from those illustrated and described. Confirmation of dimensions and data can be supplied upon request. The document also mentions compliance with BS EN ISO 9001:2015 and membership in the HEVAC Association.
Catalog excerpts
TWINFLOW STDL Product Overview • 7 standard sizes from 125 mm to 500 mm • Air volume flow rates up to 1.74 m3/s • Static pressures up to 730 Pa • Suitable for operating temperatures up to +60°C • Redesigned casing to improve airflow and reduce specific fan powers • Acoustically lined internally to reduce breakout noise levels • Low Specific Fan Powers • Available in -C Twinflow STDL fans are suitable for external mounting. The range incorporates advanced backward curved impellers. Easy Installation All models are designed for direct connection to standard diameter flexible or rigid circular ducting...
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TWINFLOW STDL Performance Range Curves 800 Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
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Data provided is at standard air density of 1.2 kg/m3. ErP data in accordance with Regulation (EU) 1253/2014. Product category is NRVU. Measurement category used to determine energy efficiency: D. A variable speed drive is integrated within the fan. Peak Amps @ 230V / 1PH / 50Hz. The overall A-weighted sound pressure level is at a distance of 3m with spherical free-field propagation. It is expressed in dB re-20pPa and is presented for comparative purposes only. Email [email protected] Website eltauk.com
Open the catalog to page 4
Data provided is at standard air density of 1.2 kg/m3. ErP data in accordance with Regulation (EU) 1253/2014. Product category is NRVU. Measurement category used to determine energy efficiency: D. A variable speed drive is integrated within the fan. Peak Amps @ 230V / 1PH / 50Hz. The overall A-weighted sound pressure level is at a distance of 3m with spherical free-field propagation. It is expressed in dB re-20pPa and is presented for comparative purposes only. Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which...
Open the catalog to page 5
Data provided is at standard air density of 1.2 kg/m3. ErP data in accordance with Regulation (EU) 1253/2014. Product category is NRVU. Measurement category used to determine energy efficiency: D. A variable speed drive is integrated within the fan. Peak Amps @ 400V / 3PH / 50Hz. The overall A-weighted sound pressure level is at a distance of 3m with spherical free-field propagation. It is expressed in dB re-20pPa and is presented for comparative purposes only. Email [email protected] Website eltauk.com
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Data provided at standard air density of 1.2 kg/m3. Tests and preparation of the sound data have been carried out in accordance with BS 848 Part 2:1985 at 50% peak pressure. The Sound Power Level Spectra are in dB re-1pW. Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
Open the catalog to page 7
Data provided at standard air density of 1.2 kg/m3. Tests and preparation of the sound data have been carried out in accordance with BS 848 Part 2:1985 at 50% peak pressure. The Sound Power Level Spectra are in dB re-1pW. Email [email protected] Website eltauk.com
Open the catalog to page 8
Data provided at standard air density of 1.2 kg/m3. Tests and preparation of the sound data have been carried out in accordance with BS 848 Part 2:1985 at 50% peak pressure. The Sound Power Level Spectra are in dB re-1pW. Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
Open the catalog to page 9
Email [email protected] Website eltauk.com Rectangular Spigot Version All dimensions are expressed in mm.
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‘Supplied as a single mount. Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
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TWINFLOW STDL Email [email protected] Website eltauk.com
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TWINFLOW STDL Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
Open the catalog to page 13
Tel +44 (0) 1384 275800 Email [email protected] eltauk.com STDL-08-2022 Issue D A member of HEVAC ASSOCIATION PATRONS
Open the catalog to page 14All ELTA FANS catalogs and technical brochures
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