BT - High Pressure Twin Fans



The New BT Twin units are constructed to the highest manufacturing standards and developed around a rigid anodised aluminium extruded frame. Panels shall be manufactured from prime quality galvanised or plastisol sheet steel, fixed to the frame, ensuring a robust casing, for those tough site conditions.

Fan / Motor Assembly

Units are twin forward curved, double inlet double width centrifugal impellers, driven by totally enclosed fan ventilated motors, wound to suit either 220-240V/1ph/50Hz or 380-415V/3ph/50Hz electrical supply, with special voltage motors available on request.

The fan and motors are assembled on a rigid angle iron framework, fitted with anti-vibration mounts and a flexible connection between the unit casing and frame to ensure vibration free operation.

The motors are protected to IP55, against dust and water jets complying with BS EN 60529. With motor insulation Class F as a minimum, suitable for operating temperatures up to +55°C. All belt driven fans have metric pulleys to ISO 4183 and wedge belts to ISO 4184 and DIN 7753.

Protection of the motor is to be provided by a current overload protection switch such as a D.O.L. starter or equivalent which is required on all installations or the product guarantee will be invalidated.

Twin Fan Controllers

The BT range offers a guaranteed operation in the unlikely event of fan failure. A full range of control packages are available with facilities of Auto Changeover on fan failure, 24hr Duty Share, BMS compatibility, Night Time Setback and sensor connections for Optical Timelocks, Humidity Sensors, Air Quality Sensors and PIR Detectors.


Trackmaster Twin Fan Controller (ITC)
The ITC model provides automatic changeover on fan failure as well as enabling a manual selection of either fan for duty sharing or test purposes. (BMS compatible via volt free contacts). This controller must have a permanent live supply. Any On/Off switching must be via the sensor connections S1 and SG terminals.
Stock Ref No: 10314200


Trackmaster Twin Fan Controller (ITC-DS)
The ITC-DS model (Duty sharing). Incorporates a timing mechanism which operates alternate fans on 12 or 24 hour intervals, thus ensuring the extended life of the fan bearings. The controller also provides automatic changeover on fan failure along with the facility for manual selection of either fan. (BMS compatible via volt free contacts). This controller must have a permanent live supply. Any On/Off switching must be via the sensor connections S1 and SG terminals
Stock Ref No: 10314210
RSC - Remote Setback Control
The RSC multi-speed control system offers 2 speed fan versatility eg. Energy Management for night-time setback. Can be used in conjunction with Vent-Axia ITC, ITC-DS controllers using 5 step auto-transformer speed controllers for speed selection. Uses 24V output from ITC controller. Dimensions:86mm x 178mm x 100mm (Width x Height x Depth)
Stock Ref No: 10314230A
Remote Visual Indicator (RVC)
Wired in conjunction with either an ITC or ITC-DS controller the RVC can be located up to 100m away using low cost ELV wiring. The compact, single gang RVC ELV (Extra Low Voltage) remote visual controller indicates status of Fan 1 and Fan 2 with status/warning lights. Push button allows Fan 1 and Fan 2 with standby (Off) to be selected.
Stock Ref No: 10314220


Unit A B C D E F G H J K
BT1 F18 720 960 960 640 880 925 840 229 241 167
BT2 F22 720 1260 960 640 1180 1225 840 288 264 228
BT3 F28 1020 1560 1260 940 1480 1525 1140 361 286 279
BT4 F31 1020 1860 1260 940 1780 1825 1140 404 308 350
BT5 F40 1320 2160 1560 1240 2080 2125 1440 507 339 382



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