Gamma Supply Series – CD638S
Performance Curve - CD638S
Description
The Gamma Series of centrifugal supply air roof units have been designed for use in free intake and ducted installations.
These compact and low profile units are ideal for supplying fresh air to an air handling unit or to an air conditioning
system in commercial buildings.
They are available in 8 sizes extending from 315 to 710mm diameter.
Features Corrosion-proof, robust construction.
Choice of speeds available.
Ideal for ducted installations.
Fitted bird mesh prevents debris and birds entering building and interrupting motor operation.
High performance backward-curved centrifugal impellers fitted.
Can be mounted at angles up to 30°.
Some 3-phase motors are 2-speed star/delta design as standard.
Speed-controllable using electronic or auto-transformer controllers.
Construction
Cowls are of UV-stabilised plastic.
Steel components have a corrosion resistant finish.
Backward-curved centrifugal impellers.
Bird-mesh guards are fitted as standard.
Shutters cannot be fitted.
Motors
Type - external rotor, squirrel cage induction motors
Electricity supply - 230V, single and 415V, 3-phase, 50Hz
Bearings - sealed-for-life, ball
Speed-controllable using electronic or auto-transformer controllers
Some three-phase units are fitted with 2-speed star/delta design motors
Internal Thermal Protection
All motors are fitted with Internal Thermal Contacts as standard.
Testing
Air flow tests to BS848:Part 1 1980
Noise tests to BS848:Part 2 1985
Suggested Specification
The roof ventilators shall be of the Gamma Series supply air type as designed and manufactured by Fantech Pty Ltd.
Impellers shall be backward-curved centrifugal design and
driven by speed-controllable external rotor motors with integral thermal protection.
The cowls shall be manufactured from UV-stabilised plastic. Steel components to be corrosion protected. All models shall be fully tested as a complete assembled unit to BS848:Part 1, 1980 for air flow and BS848:Part 2, 1985 for noise.Technical Data - CD638S
| Speed [rps] | Avg. dBA @ 3m | kWatts (Input) | Amps | Max.°C | Approx. Weight [kg] |
|---|
| 11 | 50 | 0.65 | 1.15 | 60 | 67 |
Sound Data
| Type | 63 | 125 | 250 | 500 | 1K | 2K | 4K | 8K |
|---|
| Inlet | 78 | 77 | 73 | 64 | 64 | 59 | 60 | 56 |
Dimensions
*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.
Ancillaries
