• 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 Vent Axia SC5001 - Speed controller1 x HIMF - Mixed Flow Fan 100mm Inline Fan1 x RDH Flange - 03151 x Elta SPA400/4-1AC - IP541 x Helios TSD 3.0 Transformer Speed Control (400v)1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FU 15 40 Frequency Inverter1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x FRQ5-10A Inverter Speed controller1 x Frequency converter RUCK - FU 075 201 x FU 22 25 Frequency Inverter1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 4.0KW1 x FRQ5-4A V2 Inverter Speed Controller1 x Elta Variable Speed Drive IP66 - 0.75KW1 x FRQ-10A V2 Inverter Speed controller1 x FU 075 52 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 211 x ELTA - Three Phase Transformer 10amps1 x FU 075 04 Frequency Inverter (IP20)1 x ELTA - Three Phase Transformer 3amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x TDP-D Pressure Sensor with Display2 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Elta 10 Amp Electronic single phase speed controller.1 x FU 22 04 Frequency Inverter1 x ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Electronic extractor fan speed controller - FSC 1.51 x EC6H - Reversible Group Fan Electronic Controller1 x Balance S Diffuser - NO RING - 125mm2 x Elta 3 Amp Electronic single phase speed controller with TK2 x Airvent ceiling fan controller1 x Circular Ceiling Diffuser - TST 1251 x Elta 2 Amp Electronic single phase speed controller.1 x Elta 6 Amp Electronic single phase speed controller with TK1 x Elta 3 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 12amps1 x Curved Blade Grille 600x600 (2way blow)1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x ELTA - Single Phase Transformer 16amps1 x PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 1001 x ELTA - Single Phase Transformer 8amps1 x JSR 200 Painted RAL50181 x EFSC-3N- Single Phase Speed Control1 x Round ceiling diffuser 400mm2 x ELTA - Single Phase Transformer 4amps1 x Circular Ceiling Diffuser - TST 2001 x AIRVENT speed control - AIR4019611 x PCA Diffuser - PCA-2501 x Round ceiling diffuser 300mm1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 200mm1 x Balance S Diffuser - NO RING - 100mm1 x Round ceiling diffuser 250mm1 x ELTA - Single Phase Transformer 10amps1 x Round ceiling diffuser 350mm1 x Run On Timer - 5s - 4hrs - RT5A2 x Push Timer Switch - ZA41 x Remote Timer Control - 13511 x Helios ZNE Electronic Fan Overrun Timer1 x Time Delay Unit - DT20B2 x Multi Input Run On Timer - 0 - 20min - CFCU1 x TTC-2000 Three phase electric heater controller1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x UB47- Universal Insulated Terminal1 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic1 x EM30-24 Electro-Mechanical Control Panel1 x EC-Vent control board1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Elta ACO Panel 149-ACO18B1 x ACO 149-ACO1/EDV1 x Systemair Save Connect 2.0 Internet Module1 x REB-CVF 0-10v Controller1 x EM30-24 Control Panel Commissioning Service1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Duct Termination with Mesh - 100mm1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Helios TSW 7.5 Amp Transformer speed controller1 x Helios TSW 3 Amp Transformer speed controller2 x Helios TSW 0.3Amp Compact Transformer speed controller1 x COM-31 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Vent Axia ACM 200 inline mixed flow duct fan1 x Helios TSW 10 Amp Transformer speed controller1 x Helios TSW 1.5 Amp Transformer speed controller1 x Helios TSW MCB Amp Transformer speed controller1 x RDS 11 Helios Transformer Controller With Motor Protection1 x Vent Axia ACM 125 inline mixed flow duct fan1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x TG-K Duct temperature sensor1 x REU 3amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x MWS 3 – Transformer Controller With Motor Protection1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x BEAS-control module1 x DEF-140T Inlet Guard for the CBT-100N1 x Helios HQW-200/2 - IP551 x 7 Day Programmable TIMECLOCK1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Envirovent G4 Filter - SL-G4/F71 x MWS 1.5 – Transformer Controller With Motor Protection1 x Speed Controller - REB31 x Vent Axia T-Series Controller1 x Speed Controller - REB51 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

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