• Model:SQS250-1ECL

Quietflow SQS250-1ECL - Centrifugal Box Fan

£ 1,259.39 (excl. VAT)

£ 1,511.27 (inc. VAT)


Quietflow SQS250-1ECL - Centrifugal Box Fan

• Standard size 250 mm
• Air volume flow rates up to 0.347 m3/s
• Static pressures up to 841 Pa
• Suitable for operating temperatures up to +60℃
• Robust galvanised sheet steel casing
Acoustically lined single in-line centrifugal fans, suitable for internal duct mounting. The Quietflow incorporates advanced backward curved impellers, with three ndimensional profiled blades.

Low Noise
Each unit is acoustically lined internally with Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining minimising breakout noise levels.

Easy Installation
New multi-mount brackets allow easy mounting in a range of orientations.

Easy Commissioning
Integrated commissioning control allowing single speed selection and also limiting maximum speed if used with an external potentiometer.

Efficient Performance
High efficiency low tonal noise backward curved centrifugal impellers are directly driven by an EC external rotor motor, provide low specific fan powers and stepless speed control without tonal noise generation.

Weather Resistance
Units can be weatherproofed in the factory to allow external installation.

PDF Files


SQS250-1ECL Specification Sheets

1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x Vent Axia ACM 125 inline mixed flow duct fan1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Elta ACO Panel 149-ACO14E2 x Isolator Switch - ISOSW1 x MWS 3 – Transformer Controller With Motor Protection1 x EC-Vent control board1 x CONTROL ECOWATT - Basic3 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x ACO 149-ACO1/EDV3 x Elta 6 Amp Electronic single phase speed controller with TK1 x EM30-24 Electro-Mechanical Control Panel1 x Elta 3 Amp Electronic single phase speed controller with TK1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection5 x WS - Reversing Switch from Helios Fans2 x COM-35 x MWS 1.5 – Transformer Controller With Motor Protection1 x EC-Vent Room Unit1 x Systemair Save Connect 2.0 Internet Module3 x Electronic extractor fan speed controller - FSC 1.52 x Elta ACO Panel 149-ACO18B2 x EC6H - Reversible Group Fan Electronic Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x EM30-24 Control Panel Commissioning Service1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x TG-K3/NTC10-01 - Duct temperature sensor1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x TG-K Duct temperature sensor1 x Envirovent G4 Filter - SL-G4/F71 x BEAS-control module1 x Transformer 5 Speed Controller - ATC1-12TK1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Vent Axia T-Series Controller1 x Two Speed Switch - REGUL-21 x Transformer (silent) speed controller - RE 3.0 Amp1 x Remote Timer Control - 13511 x Helios HQW-200/2 - IP551 x Easy-fix termination kit - High Rise Ventilator - EFT1 x Helios HQW-630/4 - IP55
Reviews
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I have a loft mount extractor fan which was very noisy. I ...