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Gamma Ultra - Downflow – GUD406D
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Gamma Ultra - Downflow - GUD406D - Fan

Performance Curve - GUD406D

Performance Curve for Gamma Ultra - Downflow GUD406D

Description

The Gamma Ultra Series of Mixed-Flow roof units has been designed for use in commercial ducted exhaust applications. These compact and low profile units are fitted with birdmesh to prevent the entry of birds and vermin into the ducting or building. They are available in 9 sizes, extending from 250 to 630mm diameter.
Features
  • Robust, lightweight construction.
  • Choice of speeds available.
  • Compact, low profile design.
  • Designed for down flow or vertical exhaust applications.
  • Shutters are an optional extra for single fan units. The pressure loss across the shutter has to be added to the system pressure before making selections.
  • Can be mounted at angle up to 30°.
  • Most 3-phase motors are 2-speed star/delta design.
Construction

Cowls are UV-stabilised plastic.
Impellers are Mixed-Flow design and made from high performance injection moulded composite material.
Steel components have a corrosion resistant finish.
Bird-mesh guards are fitted as standard to both downflow and vertical exhaust models.

Motors

Type - external rotor, squirrel cage induction motor
Electricity supply - 230V, single and 415V, three-phase, 50Hz
Bearings - sealed-for-life, ball
Speed-controllable using electronic or auto-transformer controllers
Most three-phase units are fitted with 2-speed star/delta design motors

Internal Thermal Protection

Thermal protection is supplied as standard on all motors

Testing

Air flow tests based on ISO5801
Noise tests based on ISO13347-3

Suggested Specification

The Gamma Ultra Series roof ventilators shall be the downflow exhaust type as designed and manufactured by Fantech Pty. Ltd and be of the model numbers shown on the schedule/drawings.
Impellers shall be made from high performance injection moulded composite material. They shall be Mixed-Flow design and driven by speed-controllable external rotor motors with integral thermal overload protection.
The cowl shall be of the downflow exhaust design and formed from plastic and/or fibreglass. Steel components are corrosion protected.
All performance data shall be for a complete assembled unit based on ISO5801 for air flow and ISO13347-3 for noise.

Technical Data - GUD406D

Speed [rps] Avg. dBA @ 3m kWatts (Input) Amps Max.°C Approx. Weight [kg]
15 43 0.22 0.56 60 23

Sound Data

Type 63 125 250 500 1K 2K 4K 8K
Inlet 67 66 66 61 59 56 49 39
Outlet 60 69 71 65 65 59 50 40

Dimensions

Dimension Drawing for Gamma Ultra - Downflow GUD406D
A B C D E F G
620 720 75 908 890 530 540

*All dimensions in mm, unless otherwise stated

Wiring Diagram

Wiring Diagram for Gamma Ultra - Downflow GUD406D

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

Ancillaries

CBD-D - Backdraft Shutters
CBD-D
Backdraft Shutters
SD1-S - Star/Delta Switch
SD1-S
Star/Delta Switch