Twinflow STD

Twinflow STD

 
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Twinflow STD

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The Twinflow STD...EC incorporates the BAT (Best Available Technology) Vpro backward curved impeller, with three dimensional profiled blades powered by the ultra reliable Ziehl-Abegg EC (electronically commutated) external rotor motor. The range of in-line centrifugal twin fans, designed to overcome space restrictions, is suitable for internal mounting.

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FEATURES & BENEFITS

Learn more about individual features and benefits of our products.

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SPECIFICATION

The Twinflow STD range of centrifugal fans as manufactured by Elta Fans Ltd.

Technical information

TECHNICAL INFORMATION

The technical information available to you from ELTA Fans is exhaustive - Choose from either sound, performance and electrical or dimensional data for each and every product

Accessories

ACCESSORIES

Elta supply a full range of accessories for each of their products.

Compare

COMPARE

Choose up to three products to compare their features side-by-side.

Downloads

DOWNLOADS

Get the full brochure, wiring diagrams and operation and maintenance instructions.

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Features & Benefits


Ease of installation.

All models are designed for direct connection to standard diameter flexible or rigid circular ducting with 50 mm long spigots with EPDM rubber U shaped seals for ease of connection.

Material strength

A robust, yet lightweight unit with a galvanised sheet steel casing.

Performance

High efficiency low tonal noise backward curved centrifugal impellers are directly driven by an AC or EC external rotor motor, designed to be non-overloading and provide high performance characteristics. STD units are fitted with a non return damper for elimination of short circuiting of air within the casing.

Mounting

Each unit is supplied with integral mounting brackets.

Design appeal

Ideal for roof spaces and / or where space is at a premium.

Quality assurance

All units are designed and manufactured with procedures as defined in BS EN ISO 9001: 2008.

Warranty

Each STD has a 12 month warranty.

SPP Specifications

Specification

The Twinflow STD range of direct drive twin fans as manufactured by Elta Fans Ltd. 46 Third Avenue, Pensnett Trading Estate, Kingswinford, West Midlands DY6 7US, UK, Tel: +44 (0) 1384 275800 - If you need more information - Contact us.


Casing

Robust 1.2mm galvanised mild steel sheet casing. The casing is specially manufactured using integral motor mounting plates to provide additional rigidity for the casings.

Each casing provides spigots to suit standard circular ducting. EPDM (Ethylene Propylene) rubber U shaped seals (being ozone and UV stable) are used to ensure a good seal back to the duct that is to be attached. Top & bottom access is provided as a standard feature to facilitate ease of maintenance and cleaning.


Impellers

High efficiency low tonal noise backward curved centrifugal impeller, dynamically balanced to ISO 14694 Grade G6.3 and directly driven by the motor to provide a smooth airflow through the unit.


Motors

The twin range of units may have either an EC or AC external rotor motor fitted as standard. The motor contains sealed for life bearings. Thermal Class of motors to THCL 130 or 155 dependent on size.

Manufactured by Ziehl-Abegg providing increased reliability. All motors are suitable for use in ambient air conditions up to 60°C.


Quality Management

Units are to be designed and manufactured with procedures as defined in BS EN ISO 9001:2008. All STD units are to be tested to ISO 5801:2007 (airside performance) and BS 848 Part 2:1985 (sound performance).


Typical Application

  • Toilets
  • Bathrooms
  • Hotels
  • Schools
  • Colleges
  • Libraries

Technical Information

Dimensional Data



twinflow-STD
Twinflow-STD-Dimtable All dimensions are shown in mm.

Performance & Electrical Data

AC Motors



Twinflow-STD-PE-SinlgePh-AC

Overall total efficiency, r/min and FMEG values are per ISO 12759 installation category D. FLC at 230V/1Ph/50Hz
Data provided at standard air density of 1.2 kg/m3.  
The overall A-weighted sound pressure level is at a distance of 3m with spherical free-field propagation. It is expressed in dB re-20µPa and is presented for comparative purposes only.

Twinflow-STD-PE-ThreePh-AC
Overall total efficiency, r/min and FMEG values are per ISO 12759 installation category D. FLC at 400V/3Ph/50Hz
Data provided at standard air density of 1.2 kg/m3.  
The overall A-weighted sound pressure level is at a distance of 3m with spherical free-field propagation. It is expressed in dB re-20µPa and is presented for comparative purposes only.

EC Motors



Twinflow-STD-PE-SinlgePh-EC

Twinflow-STD-PE2-SinlgePh-EC

Data provided at standard air density of 1.2 kg/m3.  
The overall A-weighted sound pressure level is at a distance of 3m with spherical free-field propagation. It is expressed in dB re-20µPa and is presented for comparative purposes only.
Overall total efficiency, r/min and FMEG values are per ISO 12759 installation category D. A Variable Speed Drive is integrated within the fan. FLC at 230V/1Ph/50Hz

Twinflow-STD-PE-ThreePh-EC
Data provided at standard air density of 1.2 kg/m3.  
The overall A-weighted sound pressure level is at a distance of 3m with spherical free-field propagation. It is expressed in dB re-20µPa and is presented for comparative purposes only.
Overall total efficiency, r/min and FMEG values are per ISO 12759 installation category D. A Variable Speed Drive is integrated within the fan. FLC at 400V/3Ph/50Hz


Sound Data



Twinflow-STD-Soudn-SinglePh-AC

Twinflow-STD-Sound-ThreePh-AC

Twinflow-STD-Sound-SinglePh-EC

Twinflow-STD-Sound2-SinglePh-EC

Twinflow-STD-ASound-ThreePh-EC
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.

Accessories & Wiring Data



Twinflow-STD-Accessories-SinglePh-AC

Twinflow-STD-Accessories2Wiring-SinglePh-AC

Twinflow-STD-Accessories-ThreePh-AC

Twinflow-STD-Accessories-SinglePh-EC

Twinflow-STD-Accessories2Wiring-SinglePh-EC

Twinflow-STD-Accessories2Wiring-ThreeePh-EC
Elta Fans 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.

Accessories

  • Fast Clamps (018)

    For quick connection of spigotted fans to circular duct or accessories

    Read more
  • Silencers (068-JF)

    Pre-galvanised sheet steel with perforated steel lining

    Read more
  • Av Mounts (Rubber)

    Spring AV mounts - zinc plated steel, rubber insert and foot pad

    Read more
  • Flexible Connectors (018)

    Read more
  • Panel Filters (018)

    Filter access with removable panel

    Read more
  • Electric Heater Batteries

    Safe and clean heating

    Read more
  • Speed Reference Potentiometer

    Speed reference potentiometer

    Read more
 

Accessories & Wiring Data


Twinflow-STD-Accessories-SinglePh-AC

Twinflow-STD-Accessories2Wiring-SinglePh-AC

Twinflow-STD-Accessories-ThreePh-AC

Twinflow-STD-Accessories-SinglePh-EC

Twinflow-STD-Accessories2Wiring-SinglePh-EC

Twinflow-STD-Accessories2Wiring-ThreeePh-EC

 

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