• 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 Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A 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 FU 22 25 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x FRQ5-10A Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x FU 075 04 Frequency Inverter (IP20)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x ELTA - Three Phase Transformer 10amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x ELTA - Three Phase Transformer 3amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Balance S Diffuser - NO RING - 125mm1 x PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 1001 x Circular Ceiling Diffuser - TST 2001 x Curved Blade Grille 600x600 (2way blow)1 x JSR 200 Painted RAL50181 x Round ceiling diffuser 400mm1 x Circular Ceiling Diffuser - TST 1601 x Balance S Diffuser - NO RING - 100mm1 x Round ceiling diffuser 300mm1 x PCA Diffuser - PCA-2501 x Round ceiling diffuser 250mm1 x Round ceiling diffuser 350mm1 x Remote Timer Control - 13511 x Run On Timer - 5s - 4hrs - RT5A3 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer1 x Time Delay Unit - DT20B1 x 7 Day Programmable TIMECLOCK4 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Elta 10 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 2amps1 x Electronic extractor fan speed controller - FSC 1.51 x EC6H - Reversible Group Fan Electronic Controller1 x Elta 2 Amp Electronic single phase speed controller.2 x Elta 3 Amp Electronic single phase speed controller with TK1 x ELTA - Single Phase Transformer 16amps1 x Airvent ceiling fan controller1 x ELTA - Single Phase Transformer 8amps1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x ELTA - Single Phase Transformer 12amps1 x Elta 3 Amp Electronic single phase speed controller.1 x EFSC-3N- Single Phase Speed Control4 x Elta 6 Amp Electronic single phase speed controller with TK1 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 4amps3 x COM-31 x EFSC-6N- Single Phase Speed Control1 x Elta 6 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 10amps2 x Vent Axia ACM 125 inline mixed flow duct fan1 x ACO8AC/EC AutoChangeover panel1 x EM30-24 Electro-Mechanical Control Panel2 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan3 x Transformer 5 Speed Controller - ATC1-10TK2 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 fan3 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x Isolator Switch - ISOSW2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)2 x Remote controller FLEX - for VEKO INT2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Transformer 5 Speed Controller - ATC1-4TK1 x Vent Axia ACM 100 inline mixed flow duct fan2 x MWS 3 – Transformer Controller With Motor Protection1 x TG-K Duct temperature sensor1 x TTC-2000 Three phase electric heater controller1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x Elta ACO Panel 149-ACO14E2 x Helios HQW-200/2 - IP552 x BEAS-control module1 x EC-Vent control board1 x MWS 1.5 – Transformer Controller With Motor Protection2 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x Transformer 5 Speed Controller - ATC1-8TK1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x Helios TSW 3 Amp Transformer speed controller2 x CS2 Current Switch1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x WS - Reversing Switch from Helios Fans1 x Elta ACO Panel 149-ACO18B
Reviews
Transformer (silent) speed controller - RE 1.5 Amp
Transformer (silent) speed controller - RE 1.5 Amp
£ 132.29

Unbelievable! With TDmixvent500: noise reduction minimum 50%...