• 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

4 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x MWS 3 – Transformer Controller With Motor Protection3 x Isolator Switch - ISOSW1 x Helios TSW 3 Amp Transformer speed controller1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Run On Timer - 5s - 4hrs - RT5A2 x CS2 Current Switch3 x Elta 6 Amp Electronic single phase speed controller with TK2 x Helios HQW-200/2 - IP551 x BEAS-control module1 x Systemair Save Connect 2.0 Internet Module3 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Remote Timer Control - 13511 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x Push Timer Switch - ZA42 x COM-31 x MV-B Dual Switch for use with Helios HQW plate fans,2 x TG-K3/NTC10-01 - Duct temperature sensor1 x Transformer 5 Speed Controller - ATC1-12TK1 x Two Speed Switch - REGUL-21 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Helios ZNE Electronic Fan Overrun Timer1 x Envirovent G4 Filter - SL-G4/F71 x Isolator Switch - EFF-ISO1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x Helios TSW 1.5 Amp Transformer speed controller2 x MWS 1.5 – Transformer Controller With Motor Protection1 x EC6H - Reversible Group Fan Electronic Controller1 x ACO8AC/EC AutoChangeover panel1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x TG-K Duct temperature sensor1 x Speed Controller - REB101 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x Time Delay Unit - DT20B1 x Speed Controller - REB31 x Vent Axia Silent 100T (TIMER)1 x RDH FLEX-SQUARE - ADH/RDH 04501 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Helios HQW-630/4 - IP551 x 7 Day Programmable TIMECLOCK1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x EM30-24 Electro-Mechanical Control Panel1 x Vent Axia T-Series Controller1 x CONTROL ECOWATT - Basic1 x TG-R room temperature sensor1 x Elta Variable Speed Drive IP66 - 2.2KW
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

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