• 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 Elta Variable Speed Drive IP66 - 7.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 15 40 Frequency Inverter1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 0.75KW1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Elta 10 Amp Electronic single phase speed controller.1 x ELTA - Three Phase Transformer 10amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x FU 22 04 Frequency Inverter1 x FU 075 04 Frequency Inverter (IP20)1 x NKS-D swirl diffuser v-300 x 300mm1 x ELTA - Single Phase Transformer 2amps1 x Circular Ceiling Diffuser - TST 1251 x PCA Diffuser - PCA-3151 x Balance S Diffuser - NO RING - 125mm1 x Electronic extractor fan speed controller - FSC 1.51 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1001 x Elta 2 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 400mm1 x Curved Blade Grille 600x600 (2way blow)3 x Elta 3 Amp Electronic single phase speed controller with TK1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Elta 3 Amp Electronic single phase speed controller.1 x Airvent ceiling fan controller3 x Elta 6 Amp Electronic single phase speed controller with TK1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 8amps1 x ELTA - Single Phase Transformer 16amps1 x Circular Ceiling Diffuser - TST 1601 x Balance S Diffuser - NO RING - 100mm1 x ELTA - Single Phase Transformer 12amps1 x Round ceiling diffuser 200mm3 x COM-31 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 4amps1 x Round ceiling diffuser 300mm1 x EFSC-6N- Single Phase Speed Control1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 350mm1 x PCA Diffuser - PCA-2501 x ELTA - Single Phase Transformer 10amps1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x ACO8AC/EC AutoChangeover panel1 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x ACO 149-ACO1/EDV1 x Elta ACO Panel 149-ACO18B1 x EC-Vent Room Unit1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection2 x Systemair Save Connect 2.0 Internet Module1 x Transformer 5 Speed Controller - ATC1-8TK1 x Remote Timer Control - 13511 x Run On Timer - 5s - 4hrs - RT5A3 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer3 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B1 x 7 Day Programmable TIMECLOCK1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan3 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Transformer 5 Speed Controller - ATC1-12TK1 x Vent Axia ACM 200 inline mixed flow duct fan2 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Isolator Switch - ISOSW2 x TG-K Duct temperature sensor1 x Remote controller FLEX - for VEKO INT2 x CS2 Current Switch2 x MWS 3 – Transformer Controller With Motor Protection1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp2 x BEAS-control module2 x Helios HQW-200/2 - IP552 x MWS 1.5 – Transformer Controller With Motor Protection2 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted2 x Envirovent G4 Filter - SL-G4/F71 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Helios TSW 0.3Amp Compact Transformer speed controller2 x Helios TSW 3 Amp Transformer speed controller1 x Helios TSW MCB Amp Transformer speed controller2 x Vent Axia ACM 125 inline mixed flow duct fan2 x MV-B Dual Switch for use with Helios HQW plate fans,1 x WS - Reversing Switch from Helios Fans
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

Excellent low noise fan, I've got one unit running years and...