• 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 Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3001 x Egg Crate Grille with Dust panel filter 1 inch- 300x3001 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x NKS-D swirl diffuser v-300 x 300mm1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Round ceiling diffuser 400mm1 x Elta 3 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 8amps1 x COM-31 x Elta ACO Panel 149-ACO18B2 x Systemair Save Connect 2.0 Internet Module1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Wall Cowl SWC45/501 x Elta Louvre Shutter - 400mm1 x Jet Cowl - 315mm1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5952 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Helios ZNE Electronic Fan Overrun Timer1 x TTC-2000 Three phase electric heater controller1 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x Silentub - STUB 1001 x Elta Wall Cowl SWC35/401 x Mini Diffuser - 100mm1 x SPI-100 C Iris damper1 x KBA- Inlet Mounting 1801 x Duct Termination with Mesh - 150mm1 x Economy Airvent 100mm Fan with Timer1 x Balance S Diffuser - NO RING - 100mm1 x Transformer speed controller - ATC1 - 1.5 Amps1 x CS2 Current Switch1 x Isolator Switch - ISOSW1 x Remote Timer Control - 13512 x MWS 3 – Transformer Controller With Motor Protection1 x Time Delay Unit - DT20B1 x TG-K Duct temperature sensor1 x Two Speed Switch - REGUL-22 x Helios HQW-200/2 - IP551 x ACO 149-ACO1/EDV1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x REB-CVF 0-10v Controller1 x Multiflow SMB550/4-1AC1 x EC-Vent Room Unit1 x Transformer 5 Speed Controller - ATC1-10TK1 x PIR Sensor - PIR41 x Vent Axia Silent 100T (TIMER)1 x EM30-24 Control Panel Commissioning Service1 x TG-K Duct temperature sensor1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x RDH FLEX-SQUARE - ADH/RDH 04501 x UB47- Universal Insulated Terminal1 x VEKA INT 2000/15.0-L1 EKO1 x Round ceiling diffuser 250mm1 x CSB-60 Centrifugal fan1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x Duct Termination with Mesh - 100mm1 x Helios ESA-1 Surface mounted Speed Control 1amp1 x Flakt Woods ME 1.1 speed controller 1amp - EA9011571 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x Remote controller FLEX - for VEKO INT1 x Transformer 5 Speed Controller - ATC1-12TK1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Helios TSW 7.5 Amp Transformer speed controller1 x Helios TSW 1.5 Amp Transformer speed controller1 x RDS 7 Helios Transformer Controller With Motor Protection1 x Vent Axia ACM 200 inline mixed flow duct fan1 x DEF-140T Inlet Guard for the CBT-100N3 x Vent Axia ACM 125 inline mixed flow duct fan1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x 7 Day Programmable TIMECLOCK1 x TD EVO-100 PF ECOWATT - Environmentally Friendly Energy Efficient Inline Fan1 x Speed Controller - REB31 x Transformer (silent) speed controller - RE 3.0 Amp1 x Helios HQW-630/4 - IP55
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Reviews
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Delivered super promptly yesterday, next day. Only just fitt...