• 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 FRQ5-4A V2 Inverter Speed Controller1 x FU 075 52 Frequency Inverter (IP20)2 x Elta 3 Amp Electronic single phase speed controller with TK1 x EFSC-6N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 10amps1 x Run On Timer - 5s - 4hrs - RT5A2 x Remote Timer Control - 13513 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer1 x Time Delay Unit - DT20B3 x Multi Input Run On Timer - 0 - 20min - CFCU1 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x ACO8AC/EC AutoChangeover panel1 x CONTROL ECOWATT - Basic1 x Elta ACO Panel 149-ACO14E1 x EM30-24 Electro-Mechanical Control Panel1 x EC-Vent control board1 x ACO 149-ACO1/EDV1 x Systemair Save Connect 2.0 Internet Module1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Elta ACO Panel 149-ACO18B1 x EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x EM30-24 Control Panel Commissioning Service1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Wall Cowl SWC56/631 x Elta Louvre Shutter - 400mm1 x GRA-100 External Grill by S&P1 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC35/401 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3001 x Jet Cowl - 315mm1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x ELTA - Single Phase Transformer 12amps1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 4amps1 x Temperature Controller - EDTW1 x DEF-140T Inlet Guard for the CBT-100N2 x RDS 11 Helios Transformer Controller With Motor Protection1 x REB-CVF 0-10v Controller1 x ELM 18 EX Flexible Cuff for ERM 182 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-8TK1 x Transformer 5 Speed Controller - ATC1-10TK2 x Transformer 5 Speed Controller - ATC1-4TK2 x Vent Axia ACM 200 inline mixed flow duct fan1 x Helios TSW MCB Amp Transformer speed controller1 x Helios TSW 10 Amp Transformer speed controller1 x Helios TSW 1.5 Amp Transformer speed controller3 x Vent Axia ACM 125 inline mixed flow duct fan3 x COM-31 x TG-K Duct temperature sensor1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)3 x Elta 6 Amp Electronic single phase speed controller with TK1 x Envirovent G4 Filter - SL-G4/F71 x Speed Controller - REB51 x Transformer (silent) speed controller - RE 3.0 Amp1 x Helios HQW-200/4 - IP551 x Multiflow SMB550/4-1AC1 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Transformer (silent) speed controller - RE 5.0 Amp1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Speed Controller - REB1-N2 x MTP 10, 10K, Speed control1 x Silent 100 Window Kit - windowS1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x Helios HQW-250/4 - IP551 x PIR Sensor - PIR41 x QPTW 250C Acoustic Twin Fan with Controller1 x Speed Controller - REB11 x Elta Wall Cowl SWC45/501 x MTS10- extractor fan 3 step switch1 x Elta 6 Amp Electronic single phase speed controller.1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Compact SCD450/4-1AC1 x Single Deflection Grille 400mm with OBD damper1 x Envirovent 4 Way Remote Control Switch - SWHBKRF-43 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x Remote controller FLEX - for VEKO INT1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Helios TSW 3 Amp Transformer speed controller1 x MV-B Dual Switch for use with Helios HQW plate fans,2 x CS2 Current Switch1 x Isolator Switch - ISOSW1 x BEAS-control module1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Helios HQW-200/2 - IP552 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x Vent Axia T-Series Controller1 x EC6H - Reversible Group Fan Electronic Controller1 x WS - Reversing Switch from Helios Fans1 x Helios HQW-630/4 - IP551 x TG-K3/NTC10-01 - Duct temperature sensor1 x REE-1 Electronic Speed Controller
BD9/9 centrifugal M4 0.35Kw
BD9/9 centrifugal M4 0.35Kw
£ 399.00 now £ 350.00
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%...