• Model:SQS400-1ECL

Quietflow SQS400-1ECL - Centrifugal Box Fan

£ 2,284.66 (excl. VAT)

£ 2,741.59 (inc. VAT)


Quietflow SQS400-1ECL - Centrifugal Box Fan

• Standard size 400 mm
• Air volume flow rates up to 1.051 m3/s
• Static pressures up to 839 Pa
• Suitable for operating temperatures up to +60℃
• Robust galvanised sheet steel casing
• Available in EC
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.

3 x Elta Variable Speed Drive IP66 - 2.2KW1 x FU 075 52 Frequency Inverter (IP20)1 x Helios VDS-7 Three Phase Transformer 5-Step1 x Helios TSD 5.5 Transformer Speed Control (400v)1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FU 15 40 Frequency Inverter1 x Frequency converter RUCK - FU 075 202 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x FU 22 25 Frequency Inverter2 x Elta Variable Speed Drive IP66 - 0.75KW1 x FRQ5-4A V2 Inverter Speed Controller1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x FRQ5-10A Inverter Speed controller2 x Elta Variable Speed Drive IP66 - 1.5KW2 x Elta 10 Amp Electronic single phase speed controller.1 x FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x FU 075 04 Frequency Inverter (IP20)1 x ELTA - Three Phase Transformer 10amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x ELTA - Three Phase Transformer 3amps1 x ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm4 x Electronic extractor fan speed controller - FSC 1.51 x Circular Ceiling Diffuser - TST 1251 x Balance S Diffuser - NO RING - 125mm3 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1001 x PCA Diffuser - PCA-3151 x Elta 3 Amp Electronic single phase speed controller with TK1 x Elta 2 Amp Electronic single phase speed controller.1 x Circular Ceiling Diffuser - TST 2001 x ELTA - Single Phase Transformer 12amps1 x EFSC-3N- Single Phase Speed Control1 x Elta 3 Amp Electronic single phase speed controller.4 x Elta 6 Amp Electronic single phase speed controller with TK1 x Curved Blade Grille 600x600 (2way blow)1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 8amps2 x Airvent ceiling fan controller1 x Circular Ceiling Diffuser - TST 1604 x COM-31 x Round ceiling diffuser 400mm1 x JSR 200 Painted RAL50181 x EFSC-6N- Single Phase Speed Control1 x Versio Square Ceiling Diffusers - RS142 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)2 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 4amps3 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 200mm1 x Balance S Diffuser - NO RING - 100mm1 x Elta Variable Speed Drive IP66 - 0.75KW (1ph to 3ph)1 x Round ceiling diffuser 300mm1 x Round ceiling diffuser 250mm1 x PCA Diffuser - PCA-2501 x Elta Variable Speed Drive IP66 - 1.5KW (1ph to 3ph)2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x ACO8AC/EC AutoChangeover panel1 x TTC-2000 Three phase electric heater controller1 x Elta ACO Panel 149-ACO14E1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x ACO 149-ACO1/EDV1 x Elta ACO Panel 149-ACO18B4 x Systemair Save Connect 2.0 Internet Module1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Easy-fix termination kit - High Rise Ventilator - EFT1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Louvre Shutter - 400mm1 x GRA-100 External Grill by S&P1 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC45/501 x Elta Wall Cowl SWC35/401 x REB-CVF 0-10v Controller1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5954 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Vent Axia ACM 100 inline mixed flow duct fan3 x Three Phase Transformer controllers - RMT 1.5 Amp3 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)2 x Transformer 5 Speed Controller - ATC1-12TK2 x Vent Axia ACM 200 inline mixed flow duct fan2 x Vent Axia ACM 125 inline mixed flow duct fan2 x Isolator Switch - ISOSW1 x CONTROL ECOWATT - Basic2 x TG-K Duct temperature sensor1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x 220x90mm Insulated Rectangular Horizontal 90° Bend2 x BEAS-control module2 x MWS 1.5 – Transformer Controller With Motor Protection1 x Envirovent G4 Filter - SL-G4/F72 x Vent Axia T-Series Controller4 x Transformer (silent) speed controller - RE 3.0 Amp2 x Transformer (silent) speed controller - RE 1.5 Amp2 x Quietflow SQS400-1ECL - Centrifugal Box Fan2 x RDH FLEX-SQUARE - ADH/RDH 04502 x Multiflow SMB550/4-1AC2 x Remote Timer Control - 13511 x Speed Controller - REB52 x Transformer (silent) speed controller - RE 5.0 Amp2 x QPTW 250C Acoustic Twin Fan with Controller3 x MTP 10, 10K, Speed control2 x MTS10- extractor fan 3 step switch3 x PIR Sensor - PIR22 x Elta - Room Sensor - Temp/Humid/C023 x PIR Sensor - PIR43 x Speed Controller - REB11 x Non Vision 150mm x 150mm (Air Transfer) Grille - With Flange - MILL FINISH1 x SAVE VSR 300 heat recovery unit2 x Mini Diffuser - 100mm1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x AXC TP - 150mm Plastic Centrifugal Inline Fan1 x CBT-100N Centrifugal3 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan3 x Transformer 5 Speed Controller - ATC1-4TK3 x Remote controller FLEX - for VEKO INT3 x Transformer 5 Speed Controller - ATC1-10TK3 x Transformer 5 Speed Controller - ATC1-8TK3 x Helios TSW 3 Amp Transformer speed controller2 x Multi Input Run On Timer - 0 - 20min - CFCU2 x Envirovent 4 Way Remote Control Switch - SWHBKRF-43 x Temperature Fan Speed Controller - ATCP4-WMS4 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x Push Timer Switch - ZA41 x CS2 Current Switch2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp2 x MWS 3 – Transformer Controller With Motor Protection1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x RSK355 - Back Draught Shutter2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp2 x Helios HQW-200/2 - IP551 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted2 x Helios HQW-630/4 - IP553 x WS - Reversing Switch from Helios Fans1 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x Vent Axia ACM 150 inline mixed flow duct fan2 x Helios HQW-200/4 - IP551 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS2 x REE-1 Electronic Speed Controller2 x Commercial Single or 3 phase Fan Reversing Switch - RS12 x TG-R room temperature sensor1 x Transformer Speed Control - RTRE- 12.0Amp2 x Speed controller with Reverse - REB-1R2 x Helios TSW 1.5 Amp Transformer speed controller1 x Transformer speed controller - ATC1 - 1.5 Amps1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x Vent Axia Silent 100T (TIMER)1 x Isolator Switch - EFF-ISO1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x Helios HQW-250/4 - IP551 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x Transformer Speed Control - RTRE- 7.0Amp1 x Speed Controller - REB101 x REE-2 Electronic Speed Controller2 x UB47- Universal Insulated Terminal1 x Speed Controller - REB1-N1 x EBM-Papst D4E225-BC01-17 Double inlet1 x TD Mixvent 800/200 EEXEIIT31 x Compact SCD450/4-1AC1 x TG-K Duct temperature sensor2 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x CBA-60 Inlet Flange for CBT-601 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x Flakt Woods ME 1.6 speed controller 6.0amp - EA9011591 x TD EVO-100 PF ECOWATT - Environmentally Friendly Energy Efficient Inline Fan1 x TG-K3/NTC10-01 - Duct temperature sensor1 x VTR 300 STD Filter Kit2 x CPTA-E Flush mounted PIR sensor with timer2 x Helios TSW 7.5 Amp Transformer speed controller2 x Helios TSW 0.3Amp Compact Transformer speed controller1 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost
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