• 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 Isolator Switch - ISOSW2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Elta ACO Panel 149-ACO14E1 x MWS 3 – Transformer Controller With Motor Protection1 x EC-Vent control board3 x Elta 3 Amp Electronic single phase speed controller with TK1 x Vent Axia ACM 125 inline mixed flow duct fan1 x CS2 Current Switch1 x CONTROL ECOWATT - Basic5 x WS - Reversing Switch from Helios Fans2 x COM-33 x MWS 1.5 – Transformer Controller With Motor Protection1 x ACO 149-ACO1/EDV1 x EM30-24 Electro-Mechanical Control Panel3 x Electronic extractor fan speed controller - FSC 1.51 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x EC6H - Reversible Group Fan Electronic Controller1 x Elta 6 Amp Electronic single phase speed controller with TK1 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 CMT2 x TG-K Duct temperature sensor1 x Transformer Speed Control - RTRE- 12.0Amp2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Elta ACO Panel 149-ACO18B1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x Two Speed Switch - REGUL-21 x Systemair Save Connect 2.0 Internet Module1 x Transformer 5 Speed Controller - ATC1-12TK2 x Envirovent G4 Filter - SL-G4/F71 x Vent Axia T-Series Controller1 x EC-Vent Room Unit2 x BEAS-control module2 x Helios HQW-200/2 - IP551 x Transformer (silent) speed controller - RE 3.0 Amp1 x Helios HQW-630/4 - IP552 x Transformer (silent) speed controller - RE 1.5 Amp1 x EM30-24 Control Panel Commissioning Service1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Remote Timer Control - 13511 x TG-K3/NTC10-01 - Duct temperature sensor1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x REE-1 Electronic Speed Controller1 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x RDS 7 Helios Transformer Controller With Motor Protection1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Easy-fix termination kit - High Rise Ventilator - EFT
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