• 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 Soler & Palau - HXTR/12-800/28-A1 x Elta SLC560-1EC -IE5 Motor- IP551 x SDD-U Anti Vibration Pads1 x Elta SCP315/4-1AC - IP551 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x FU 22 25 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 0.75KW1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x ELTA - Three Phase Transformer 10amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x ELTA - Three Phase Transformer 3amps1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x FU 075 04 Frequency Inverter (IP20)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER2 x Remote controller FLEX - for VEKO INT1 x NKS-D swirl diffuser v-300 x 300mm1 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1251 x PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 1001 x Curved Blade Grille 600x600 (2way blow)1 x Circular Ceiling Diffuser - TST 2002 x Helios TSW 7.5 Amp Transformer speed controller1 x Round ceiling diffuser 400mm1 x Circular Ceiling Diffuser - TST 1601 x Balance S Diffuser - NO RING - 100mm1 x Round ceiling diffuser 200mm1 x Round ceiling diffuser 300mm1 x PCA Diffuser - PCA-2501 x Round ceiling diffuser 250mm1 x Round ceiling diffuser 350mm2 x Helios TSW MCB Amp Transformer speed controller2 x Helios TSW 10 Amp Transformer speed controller1 x Run On Timer - 5s - 4hrs - RT5A1 x Remote Timer Control - 13513 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer2 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B2 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller1 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x Helios TSW 1.5 Amp Transformer speed controller1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Helios TSW 0.3Amp Compact 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,1 x DEF-140T Inlet Guard for the CBT-100N1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x COM-31 x Isolator Switch - ISOSW1 x Envirovent 4 Way Remote Control Switch - SWHBKRF-42 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan3 x Three Phase Transformer controllers - RMT 1.5 Amp1 x CS2 Current Switch2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Vent Axia ACM 125 inline mixed flow duct fan1 x TG-K Duct temperature sensor2 x Elta 6 Amp Electronic single phase speed controller with TK1 x Elta ACO Panel 149-ACO14E1 x BEAS-control module1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x Elta 3 Amp Electronic single phase speed controller with TK2 x Transformer 5 Speed Controller - ATC1-12TK3 x Systemair Save Connect 2.0 Internet Module1 x ACO 149-ACO1/EDV1 x Helios HQW-200/2 - IP551 x FAST-TRACK RANGE 90mm - Adaptor For Distribution Box1 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted3 x MWS 1.5 – Transformer Controller With Motor Protection1 x EM30-24 Electro-Mechanical Control Panel1 x Elta ACO Panel 149-ACO18B1 x Envirovent G4 Filter - SL-G4/F71 x ERR 20/1 Centrifugal inline fan1 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT2 x WS - Reversing Switch from Helios Fans1 x EC-Vent Room Unit
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%...