• Model:SB200-C

Helios SB-250-C SilentBox Acoustic Inline Fan

£ 502.24 (excl. VAT)

£ 602.69 (inc. VAT)

Duty: Up to 960m3/hr

■ Installation:
Installation in any position without restriction – horizontally, vertically or pitched – suitable for intake or extract (Exception: SVS must not be installed with the swing-out motor impeller unit facing upward).

■ Motor
Totally enclosed external rotor motor with ball bearings, impregnated windings insulation class F, designed for continuous operation, maintenance free and interference-free.

■ Casing
Like an internal attenuator. Acoustically lined with abrasive resistant 50 mm thick mineral fibreboard. Four quick release clamps permit easy access to motor scroll and impeller set.
Swing out motor and impeller.
Spigots on intake and exhaust twin-seal rubber gaskets fit standard ducts. All parts manufactured from galvanised sheetsteel.

■ Impeller
With backward curved highquality polymer blades. Inflow via inlet cone.

■ Electrical connection
Terminal box (IP 54) is supplied with a 60 cm long electric cable.

■ Motor protection
With thermal contacts wired in series with the windings. To reset the thermal contacts the main supply must be switched off and on.

■ Speed control
Stepless 0 – 100 % using electronic controller or 5 step transformer controller (see table).

■ Protection class
IP 44

■ Casing
Extremely flat casing in longer design with more than 50 mm thick sound-absorbing mineral wool lining and glass fibre surface. The acoustic box which is placed in front of the fan reduces the sound level for the intake significantly. The sound pressure level is reduced to a smaller extent (see sound levels in the tables above the performance curves).

■ The swing out motor and impeller unit permits maintenance and cleaning without disassembly of system components. The swing-out range must be considered for the inspection flap.

■ Impeller
Energy-saving centrifugal impeller with backward curved blades from high quality polymer. Dynamically balanced for low noise operation.

■ Electrical connection
Terminal box (IP 54) mounted on running cable.

■ Motor protection
With thermal contacts wired in series with the windings which automatically reset after cooling.

■ Speed control
Stepless 0 – 100 % by use of electronic controller or 5 step transformer controller (see table).

■ Protection class
When installed in ducting the fan is rated IP 44.

PDF Files


SB250 Datasheet

1 x Jetflow-HIT Metal inline - 125mm1 x Round ceiling diffuser 300mm1 x Curved Blade Grille 600x600 (2way blow)1 x Elta Turboflow-TF - 560mm - Single phase1 x Etaline 630mm - D4 01 3 Phase1 x HD Series Control Damper - 2000mm X 1000mm1 x Helios DDF-315 Roof Cowl1 x Round ceiling diffuser 400mm1 x Round ceiling diffuser 200mm1 x Flat Roof Terminal -OFT 5 - Asphalt1 x RSK355 - Back Draught Shutter1 x SPI-200 C Iris damper1 x HD Series Control Damper - 3000mm X 1500mm1 x SPI-250 C Iris damper1 x Multiflow SMB650/4-1AC1 x SPI-315 C Iris damper1 x Flat Roof Terminal -OFT 5 - EPDM1 x Helios DDF-400 Roof Cowl1 x Circular Ceiling Diffuser - TST 1601 x HD Series Control Damper - 2300mm X 1000mm1 x NKS-D swirl diffuser v-300 x 300mm1 x Flat Roof Terminal -OFT 5 - Bitumen1 x RSK400 - Back Draught Shutter1 x Elta Wall Cowl SWC56/631 x Flat Roof Terminal -OFT 1 - Felt & Asphalt 110mm1 x Circular Ceiling Diffuser - TST 1251 x SPI-125 C Iris damper1 x Miniflow SMF Horizontal Roof Cowl SMF131 x RSK450 - Back Draught Shutter1 x HD-LL Series - 100mm with NFA-S2, Multi Voltage Damper Actuator1 x Elta Wall Cowl SWC25/311 x AW Sileo EC Plate Axial Fan - Three Phase - 710mm1 x KABT High Temp Acoustic Kitchen Fan & Inverter Kit - KABT/4-6000/450 ND - Pack 31 x HRT/4-450/35-BPN1 x EB-100N S - Centrifugal Fan1 x CVAT Acoustic Kitchen Fan & Inverter Kit - CVAT/4-6000/500 ND - Pack 61 x 125mm - 150mm Round Reducer1 x Flexible PVC Ducting - 220x901 x Elta SLC560-1EC -IE5 Motor- IP551 x Helios GigaBox 500mm GBW 500/4 centrifugal1 x CRHB/6- 315mm Roof mounted Fan - Horizontal discharge1 x AM pallet Delivery Surcharge1 x Soler & Palau - HCBT/4-400/H - IP65
Reviews
Circular Inline Silencers - 0.6M long - SLU-600
Circular Inline Silencers - 0.6M long - SLU-600
£ 50.56

I have a loft mount extractor fan which was very noisy. I ...