Twin Gamma Ultra Vertical – TGUD358

The Twin Gamma Ultra Series of Mixed-Flow roof fans have been designed for use in commercial ducted exhaust applications. Incorporating twin vertical discharge fans, the unit provides 100% stand-by capacity.

These compact and low profile units are fitted with bird-mesh to prevent the entry of birds and vermin into the ducting or building.

They are available in 5 sizes, extending from 315 to 500mm diameter.

• Robust, lightweight construction.
• Choice of speeds available.
• Compact, low profile design.
• Designed for vertical exhaust applications.
• Backdraft-shutters are an optional extra (See special note).
• Can be mounted at angle up to 30°.
• Most 3-phase motors are 2-speed star/delta design

Note: Pressure loss across the shutter is now included in the performance curves.

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

All three-phase units are fitted with 2-speed star/delta design motors

Backdraft shutters are offered as an optional extra, but are essential to prevent short circuiting and ensuring proper performance of the product. Due to this, the backdraft shutter effect on the products performance is included in the performance curves. This is to ensure accurate selections to allow reliable and predictable on-site performance. There is no longer a need to add losses due to the backdraft shutter as is required with single Gamma models.