191 / 416
© FANTECH
2016
D
ROOF MOUNTED FANS
D-45
GL GAMMA SERIES - BUSHFIRE CODE COMPLIANT
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, with bushfire code compliance,
has been developed for bushfire prone regions. They feature a
high performance backward-curved centrifugal fan and a robust
galvanised steel construction.
There are 8 sizes in the range extending from 315 to 710mm
diameter.
Typical Applications
Suitable for applications requiring the combination of
speed-controllable motors with an all metal construction.
Designed for use in commercial kitchen exhaust systems
in bushfire prone areas, see
Special Notes
.
Features
O
Quick release toggle clamps provide easy access for
cleaning and maintenance.
O
Designed for vertical discharge applications.
O
High quality bronze mesh provides ember protection.
O
Speed-controllable with electronic or auto-transformer
controllers (not on CE316VGL-BFC).
O
Compact, low profile design.
O
Choice of speeds available.
O
High performance backward-curved centrifugal fan.
O
Many 3-phase motors are 2-speed star/delta design.
O
Can be mounted at angles up to 30°.
O
Backdraft dampers are an optional extra, refer to page
J-2
for details.
O
Compliant to AS3959:2009 up to and including BAL-40.
Construction
Cowls are of galvanised steel
Ember protection - bronze mesh with maximum of 2mm aperture
Backward-curved centrifugal impellers
Powder-coating is an optional extra
Motors
Type - external rotor, squirrel cage induction motors
Electricity supply - 230V, single or 415V three-phase, 50Hz
Bearings - sealed-for-life, ball
Speed-controllable using electronic or auto-transformer speed
controllers (not CE316VGL-BFC)
Many 3-phase motors are 2-speed star/delta design.
See pages O-2/3 for details on these motors
Internal Thermal Protection
All motors are fitted with Internal Thermal Contacts as standard.
Testing
Air flow to ISO5801:1997
Noise tests to BS848:Part 2, 1985
Wiring Diagram
See page
N-8
, diagrams
ER 1, 2, 4, 5.
Special Notes
Construction of buildings in bushfire prone areas
AS3959:2009, clause 6.6.5(b) "Roof penetrations" states:
Openings in vented roof lights, roof ventilators or vent pipes
shall be fitted with ember guards made from a mesh or
perforated sheet with a maximum aperture of 2mm, made of
corrosion-resistant steel, bronze or aluminium.
Backdraft dampers
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
AS/NZS1668.1:1998, 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".
SUGGESTED SPECIFICATION
The roof ventilators shall be of the GL Gamma Series with
bushfire code compliance as designed and manufactured by
Fantech Pty Ltd.
Impellers shall be of backward-curved centrifugal design and
driven by speed-controllable external rotor motors with integral
thermal protection.
They shall be constructed from galvanised steel and be of
vertical exhaust design.
Ember protection mesh shall be bronze or steel with
openings a maximum of 2mm. The windband shall incorporate
quick-release toggle clamps to provide easy access for cleaning
and maintenance
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.
HOW TO ORDER