New AirTrak In-Line Centrifugal Duct fans – ACH

The new “ACH” AirTrak in-line centrifugal duct fans shall be as supplied from Vent Axia Ltd, designed around an efficient backward curved centrifugal impeller and external rotor motor, to ensure a compact design, high performance and low sound levels.

The in-line fan shall be constructed from spun steel and incorporate an aerodynamically designed airflow guide vane, ensuring maximum performance from the unit. All models are to have 30mm inlet and discharge spigots, for ease of installation and shall come complete with mounting feet for horizontal or vertical mounting

ACH range is available in six models, sizes 100, 125, 150, 200, 250 & 315mm diameter. The range shall provide a performance from 0.069³/s to 0.51m³/s with a maximum pressure development of up to 700 Pa.

Impellers

The impellers shall be aerodynamically designed centrifugal backward curved type, manufactured from steel or polyamide. The motor and impeller shall be factory matched, statically and dynamically balanced in two planes to ISO 1940, Grade G 6.3.

Motors

All sizes from 100 to 315 shall be protected to IP44 in accordance with BS EN 60529:1992. With motor insulation Class B, suitable for operating temperatures from -15°C to +40°C and atmospheres up to 95% RH. The range shall incorporate maintenance free external rotor motors, fitted with sealed for life ball bearings, ideally suited for speed control by electronic or voltage reduction. The motors shall be wound to suit a 230V/1PH/50Hz electrical supply, with all motors permanent capacitor type to optimise efficiency. HOT SPOT protection by means of a thermal contact switch incorporated within the windings shall be provided to prevent motor damage due to overloading/overheating.

Terminal Box

An IP44 terminal box shall be supplied with all models with 20mm entry.

Performance

The fan performance shall be in accordance with tests to BS848 Part 1 1980, with the fan sound levels measured in a reverberant chamber in accordance with BS848 Part 2 1985.

Quality Assurance

Design and manufacture shall be in accordance with the standard for quality management systems BS EN ISO 9001:1994.

Accessories

A full range of accessories are available with the AirTrak in-line centrifugal duct fans such as:

• Electronic Speed Controllers
• Auto Transformer Speed Controllers – recommended
• D.O.L. Starters
• Pre & Secondary Filter Cassettes
• Electric Heater Batteries
• In-Line Attenuators
• Backdraught Shutters
• Fast Clamps
• Flexible Ducting
• Wall Terminals
• Roof Terminals