• 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 Soaker Sheet to suit RA10001 x Soaker Sheet to suit RA3501 x Soaker Sheet to suit RA400/4501 x Soaker Sheet to suit RA315/3002 x Remote Timer Control - 13511 x Run On Timer - 5s - 4hrs - RT5A1 x Time Delay Unit - DT20B3 x Multi Input Run On Timer - 0 - 20min - CFCU3 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer2 x 7 Day Programmable TIMECLOCK1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x KBA- Inlet Mounting 1801 x Helios DDF-200 Roof Cowl1 x RTRD - Three Phase Speed Controller - 2 Amp1 x RTRD - Three Phase Speed Controller - 4 Amp1 x Speed Controller - REB101 x Rectangular Airbrick Adaptor1 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x Helios TSW 7.5 Amp Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-4TK2 x Helios TSW 3 Amp Transformer speed controller2 x RDS 11 Helios Transformer Controller With Motor Protection2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Helios TSW MCB Amp Transformer speed controller1 x Helios TSW 1.5 Amp Transformer speed controller1 x Helios TSW 10 Amp Transformer speed controller2 x Vent Axia ACM 100 inline mixed flow duct fan1 x MV-B Dual Switch for use with Helios HQW plate fans,2 x Systemair Save Connect 2.0 Internet Module2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Electronic extractor fan speed controller - FSC 1.51 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x TDP-D Pressure Sensor with Display1 x Three Phase Transformer controllers - RMT 1.5 Amp1 x RTRD - Three Phase Speed Controller - 7 Amp1 x MWS-75 Transformer controller with TK -7.5A1 x CS2 Current Switch1 x RTRD - Three Phase Speed Controller - 14 Amp1 x TEM 035 - 5 Speed Transformer Speed Control1 x TD EVO-100 PF ECOWATT - Environmentally Friendly Energy Efficient Inline Fan1 x Elta 3 Amp Electronic single phase speed controller with TK1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x RDS 7 Helios Transformer Controller With Motor Protection1 x Transformer speed controller - ATC1 - 1.5 Amps1 x DEF-140T Inlet Guard for the CBT-100N1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x Temperature Fan Speed Controller - ATCP4-WMS1 x Remote controller FLEX - for VEKO INT1 x Vent Axia ACM 125 inline mixed flow duct fan1 x Isolator Switch - ISOSW1 x MWS 3 – Transformer Controller With Motor Protection1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x Vent Axia SC5001 - Speed controller1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Insulated extract Plenum 8+11 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x Insulated extract Plenum 6+11 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT1 x Elta 6 Amp Electronic single phase speed controller with TK1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x ERR 20/1 Centrifugal inline fan1 x WS - Reversing Switch from Helios Fans1 x Two Speed Switch - REGUL-21 x RTRDU 3 Phase Trickle & Boost 5 Step Speed Controller - 2 Amps1 x Transformer 5 Speed Controller - ATC1-10TK1 x Helios HQW-200/2 - IP55
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%...