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GL GAMMA SERIES
ROOF MOUNTED FANS
D
© FANTECH
2016
D-38
HOW TO ORDER
The roof ventilators shall be of the GL Gamma Series vertical
discharge 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 of the vertical discharge design and
manufactured from galvanised steel. Steel components to be
corrosion protected.
All data shall be based on tests on a complete assembled unit
to ISO5801:1997 for air flow and BS848:Part 2, 1985 for noise.
SUGGESTED SPECIFICATIONS
VA - Speed controller
Ref. M-5
VZ - Run-on timer
Ref. M-14
Speed controllers
Ref. M-1
CBD - Backdraft shutter
Ref. J-2
SD - Star/Delta switch
Ref. M-7
ANCILLARY EQUIPMENT
DESCRIPTION
The GL Gamma Series of centrifugal roof units feature a
removable windband that provides easy access for cleaning
and maintenance. These compact, low profile fans are suited
for ducted exhaust applications and are available in 8 sizes
extending from 315 to 710mm diameter.
Typical Applications
Designed for use in commercial kitchen exhaust installations
as well as applications requiring vertical discharge and all metal
construction.
Features
O
Robust, galvanised steel construction.
O
Fitted with a high performance backward-curved
centrifugal fan.
O
Choice of speeds available.
O
Quick release toggle clamps provide easy access for
cleaning and maintenance.
O
Speed-controllable with electronic or auto-transformer
controllers (not on CE316VGL).
O
Many 3-phase motors are 2-speed star/delta design
O
Can be mounted at angles up to 30°.
Construction
Cowls are of galvanised steel construction
Backward-curved centrifugal impellers
Bird-mesh guards are an optional extra
Powder-coating is an optional extra
Motors
Type - external rotor, squirrel cage induction motors
Electricity supply - 230V, single and 415V, three-phase, 50Hz
Bearings - sealed-for-life, ball
Speed-controllable using electronic or auto-transformer
controllers (not CE316VGL)
Many 3-phase motors are 2-speed, star/delta design.
See pages
O-2/3
for detail on these motors.
Internal Thermal Protection
All motors are fitted with Internal Thermal Contacts as standard.
Testing
Air flow tests to ISO5801:1997
Noise tests to BS848:Part 2, 1985
Wiring Diagram
See page
N-8
, diagrams
ER 1, 2, 4, 5.
Special Notes
Backdraft shutters are an optional extra, refer to page
J-2
for
details. The pressure loss across the shutter has to be added
to the system pressure before making fan selections.
Kitchen Hood Exhaust Systems
AS1668.1:1998 Clause 11.2.5 states that, for commercial
installations, Kitchen Exhaust fan casings and cowls shall be
manufactured from non-combustible materials that have a
fusing temperature above 1000°C.