The Quietflow SQS...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 acoustically treated single in-line fans are suitable for internal mounting, manufactured in galvanised steel with a natural finish.
- 11 sizes from 100mm to 710mm.
- Air volume flow rates up to 4.31 m³/s (AC) and 4.4 m³/s (EC).
- Static pressures of up to 1179 Pa (AC) and 1202 Pa (EC).
- Suitable for operating temperatures up to +60°C.
- Robust galvanised sheet steel casing.
FEATURES & BENEFITS
Learn more about individual features and benefits of our products.
The Quietflow SQS range of centrifugal fans as manufactured by Elta Fans Ltd.
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
Elta supply a full range of accessories for each of their products.
Choose up to three products to compare their features side-by-side.
Get the full brochure, wiring diagrams and operation and maintenance instructions.
Features & Benefits
Ideal for roof spaces and / or where space is at a premium.
Each unit is acoustically lined, therefore the breakout noise levels are low.
Ease of InstallationAll 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.
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.
Access to the fan and motor is by an easily removable panel for maintenance when required.
A robust, yet lightweight unit with a galvanised sheet steel casing treated internally with a Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining with a fire resistant polymeric coating.
Motor and Impeller manufactured by Ziehl-Abegg providing increased reliability.
Each unit is supplied with integral mounting brackets.
All SQS units have integral thermal overload protection which prevents the motor from overheating.
Tested To The Very Latest Standards
SQS units are tested to ISO 5801:1997 (airside performance) and to BS 848 Pt 2:1985 (sound performance) at Elta Fans own test facility, meaning accurate, up to date information on performance and noise data that can be relied upon.
All units are designed and manufactured with procedures as defined in BS EN ISO 9001: 2008.
Full Accessory Range
Speed controllers, fast clamps, anti-vibration mounts, electric heater batteries, silencers, panel filters, flexible connectors and non return dampers.
The Quietflow SQS range of in-line single 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.
The robust 1.2mm galvanised mild steel sheet casing, is treated internally with a Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining with a fire resistant polymeric coating. The wrap around folded 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. A removable lid is provided as a standard feature to facilitate ease of maintenance and cleaning.
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.
The single 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. Electrical connection shall be via an IP55 terminal box mounted on the side for easy customer connection.
Units are to be designed and manufactured with procedures as defined in BS EN ISO 9001:2008. All SQS units are to be tested to ISO 5801:2007 (airside performance) and BS 848 Part 2:1985 (sound performance).
All dimensions are expressed in mm.
Performance & Electrical
Overall total efficiency, r/min and FMEG values are per ISO 12759 installation category D.
Tests and preparation of the sound data have been carried out in accordance with BS 848 Part 2:1985 at 50% peak pressure. The In-Duct Sound Power Level Spectra are in dB re-1pW.
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.
Accessories & Wiring Data
Fast Clamps (018)
For quick connection of spigotted fans to circular duct or accessoriesRead more
Pre-galvanised sheet steel with perforated steel liningRead more
Av Mounts (Rubber)
Spring AV mounts - zinc plated steel, rubber insert and foot padRead more
Flexible Connectors (018)Read more
Panel Filters (018)
Filter access with removable panelRead more
Electric Heater Batteries
Safe and clean heatingRead more
Electronic Voltage Controller
Electronic Voltage ControllerRead more
Speed Reference Potentiometer
Speed reference potentiometerRead more