Gamma Supply
Centrifugal Supply Air Roof Units
- 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.
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Overview
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.
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Features and Benefits
Design
Supplying fresh air to an air handling unit or to an air conditioning system in commercial buildings. Also suitable where make-up air or positive pressure is required in the ventilated space.
Bird Guards
Bird mesh guards are fitted as standard to stop birds and debris from entering.
Protection
All motors are fitted with Internal Thermal Contacts as standard.
Testing
All units tested to BS848:Part 1, 1980 (airside performance) and BS848:Part 2, 1985 (sound performance).
Specification
Construction
Cowls are of UV-stabilised plastic. Steel components have a corrosion resistant finish. Shutters cannot be fitted to this unit.
Impellers
The Gamma Series features high performance backward-curved centrifugal impellers.
Motor
The fans are built with external rotor, squirrel cage induction motors with sealed for life ball bearings. The motor requires an electricity supply of 230V, single and 415V, 3-phase, 50Hz. Some three-phase units are fitted with 2-speed star/delta design motors.
Control
Speed-controllable using electronic or auto-transformer controllers.
Typical Applications
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