• 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 - 2.2KW1 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FRQ5-4A V2 Inverter Speed Controller1 x Helios TSD 5.5 Transformer Speed Control (400v)1 x FRQ-10A V2 Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 22 25 Frequency Inverter1 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 ELTA - Three Phase Transformer 3amps1 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 Frequency converter RUCK - FU 075 211 x FU 075 04 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 381 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-3152 x Electronic extractor fan speed controller - FSC 1.51 x Balance S Diffuser - NO RING - 125mm1 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1001 x Curved Blade Grille 600x600 (2way blow)1 x Circular Ceiling Diffuser - TST 2001 x JSR 200 Painted RAL50181 x Elta 2 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 400mm1 x Versio Square Ceiling Diffusers - RS141 x Circular Ceiling Diffuser - TST 1601 x Elta 3 Amp Electronic single phase speed controller with TK1 x Elta 3 Amp Electronic single phase speed controller.2 x Elta 6 Amp Electronic single phase speed controller with TK2 x Airvent ceiling fan controller1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 8amps1 x ELTA - Single Phase Transformer 16amps1 x Balance S Diffuser - NO RING - 100mm1 x ELTA - Single Phase Transformer 12amps1 x AIRVENT speed control - AIR4019611 x Round ceiling diffuser 200mm1 x Round ceiling diffuser 300mm1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)3 x COM-31 x ELTA - Single Phase Transformer 4amps1 x EFSC-6N- Single Phase Speed Control1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 250mm1 x Elta Variable Speed Drive IP66 - 0.75KW (1ph to 3ph)1 x Round ceiling diffuser 350mm1 x PCA Diffuser - PCA-2501 x ELTA - Single Phase Transformer 10amps1 x Elta Variable Speed Drive IP66 - 1.5KW (1ph to 3ph)1 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 REB-CVF 0-10v Controller1 x 7 Day Programmable TIMECLOCK1 x FU 075 52 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 202 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x TTC-2000 Three phase electric heater controller1 x ACO8AC/EC AutoChangeover panel1 x Elta ACO Panel 149-ACO14E1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x ACO 149-ACO1/EDV2 x Transformer 5 Speed Controller - ATC1-12TK2 x Three Phase Transformer controllers - RMT 1.5 Amp1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x Envirovent G4 Filter - SL-G4/F71 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x EC-Vent Room Unit1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x Remote controller FLEX - for VEKO INT2 x Transformer 5 Speed Controller - ATC1-4TK1 x Vent Axia ACM 150 inline mixed flow duct fan2 x Vent Axia ACM 125 inline mixed flow duct fan2 x MWS 3 – Transformer Controller With Motor Protection1 x TG-K Duct temperature sensor1 x RRB- transformer controller2 x Helios HQW-200/2 - IP551 x Helios HQW-630/4 - IP551 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Transformer (silent) speed controller - RE 3.0 Amp1 x EM30-24 Control Panel Commissioning Service1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x Remote Timer Control - 13511 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Transformer 5 Speed Controller - ATC1-10TK2 x Transformer 5 Speed Controller - ATC1-8TK2 x Helios TSW 3 Amp Transformer speed controller1 x Vent Axia ACM 100 inline mixed flow duct fan2 x Vent Axia ACM 200 inline mixed flow duct fan1 x CS2 Current Switch1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x BEAS-control module2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp2 x Vent Axia T-Series Controller1 x Elta ACO Panel 149-ACO18B
Reviews
Circular Inline Silencers - 0.6M long - SLU-600
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I have a loft mount extractor fan which was very noisy. I ...