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TD Silent Series – TD-250/100SILT-4PL

TD Silent Series

Performance Curve - TD-250/100SILT-4PL


The TD Silent Series of low-profile mixed-flow in-line fans incorporates a break-through in noise reduction resulting in units that operate very quietly. The low noise levels are achieved through the technically advanced design of the internal construction, which does not impede on the air flow performance of the fan.
There are 6 models in the series, ranging from 100 to 315mm diameter spigot sizes.
  • High performance mixed-flow impeller.
  • Low noise operation.
  • Vibration absorbing elements are integrated into the advanced body design.
  • 360° rotating junction box makes connection of power cable easier (applicable for 100, 125, 150 and 200mm sizes only).
  • Integral mounting foot makes installation more simple.
  • 1 to 30 minute run-on timer available on 100 to 200mm models.
  • Includes plug and lead for easy installation.
  • Convenient 2-speed motor, factory set to high speed (single speed on models with run-on timer).
  • Fan body can be easily removed without disturbing connected ductwork.
  • Construction
    Casings manufactured from reinforced, injection moulded, polypropylene plastic. Impellers are made of injection moulded plastic and are a mixed-flow design.
    Standard models - 2-speed, squirrel cage induction motor.
    Models with run-on timer - Single-speed, squirrel cage induction motor.
    Electricity supply - 230V, single-phase, 50Hz.
    Bearings - sealed for life, ball.
    Speed-controllable using VA type speed controllers in high speed only. Not applicable to models with run-on timer.
    Class B Insulation, IP44.
    Internal Thermal Protection
    Manual-reset thermal overload protection device in accordance with mandatory requirements for in-line fans, AS/NZS60335-2-80:2004
    Air flow tests to ISO5801: Part1, 1997 and AMCA 210-99
    Noise to ISO 13347-3 2004

    Suggested Specification

    The In-line fans shall be of the TD Silent Series as supplied by Fantech Pty. Ltd.
    Impellers shall be of mixed-flow design and driven by single-phase motors with thermal overload protection.
    Fans shall include vibration absorbing elements and sound absorbing material.
    They shall also include an integral mounting foot and a power lead with plug.
    The fan body can be removed without disturbing connecting ductwork.
    All fans shall be fully tested to ISO5801: Part 1, 1997 or AMCA 210-99 for air flow and ISO13347-3, 2004 for noise.

    Technical Data - TD-250/100SILT-4PL

    Speed [rps]Avg. dBA @ 3mkWatts (Input)Amps Max.°C Approx. Weight [kg]

    Sound Data

    Type631252505001K 2K4K8K
    Inlet5052 555652 433731
    Outlet5251 525545 393529



    *All dimensions in mm, unless otherwise stated

    Wiring Diagram

    Diagram shown is for single-speed only.
    For 2-speed and special motors, contact Fantech for details.


    Elta Group