• 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 Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B2 x CS2 Current Switch1 x Transformer (silent) speed controller - RE 1.5 Amp1 x 7 Day Programmable TIMECLOCK2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x TTC-2000 Three phase electric heater controller3 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Elta 3 Amp Electronic single phase speed controller with TK2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x MWS 3 – Transformer Controller With Motor Protection2 x Isolator Switch - ISOSW1 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp2 x Systemair Save Connect 2.0 Internet Module3 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Elta ACO Panel 149-ACO14E1 x EC-Vent control board1 x CONTROL ECOWATT - Basic3 x TG-K3/NTC10-01 - Duct temperature sensor2 x COM-31 x ACO 149-ACO1/EDV1 x EM30-24 Electro-Mechanical Control Panel2 x Elta 6 Amp Electronic single phase speed controller with TK1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x TG-K Duct temperature sensor1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven3 x WS - Reversing Switch from Helios Fans3 x MWS 1.5 – Transformer Controller With Motor Protection1 x CBM 9-9 550w 4P VR (Open Motor)2 x Transformer 5 Speed Controller - ATC1-12TK2 x Elta Variable Speed Drive IP66 - 0.75KW1 x CBS-60 Outlet Flange for CSB/CBT-603 x Speed Controller - REB101 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x EC6H - Reversible Group Fan Electronic Controller3 x Electronic extractor fan speed controller - FSC 1.52 x Transformer Speed Control - RTRE- 7.0Amp1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection2 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted2 x Helios HQW-630/4 - IP551 x Transformer (silent) speed controller - RE 3.0 Amp1 x Elta 6 Amp Electronic single phase speed controller.1 x CMT-2 180/75 0.75KW - Single inlet centrifugal fan with inlet and outlet flange connections - 200mm1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Envirovent G4 Filter - SL-G4/F71 x Contactor Interface Station - CI91 x CMT-2 120/50 - 0,09Kw - LG270 Single inlet centrifugal fan direct driven1 x REE-1 Electronic Speed Controller2 x Speed Controller - REB11 x CBA-100 Inlet Flange for CBT-1001 x Easy-fix termination kit - High Rise Ventilator - EFT1 x TD Mixvent 800/200 EEXEIIT31 x Elta - Room Sensor - Temp/Humid/C021 x Remote Timer Control - 13511 x TG-R room temperature sensor1 x TUNE-R-200-3-M4 - Control Damper1 x Helios HQW-200/4 - IP551 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x PIR Sensor - PIR41 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x TG-K Duct temperature sensor1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x Speed Controller - REB1-N1 x AXC TP - 150mm Plastic Centrifugal Inline Fan
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

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