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GAMMA SUPPLY SERIES
ROOF MOUNTED FANS
D
© FANTECH
2016
D-32
Model
Number
CD..
CE..
A
B
C D
Approx.
weight
kg.
Approx.
volume
m
3
31.S
480 580 420 670
9
0.23
35.S
20
40.S
22
45.S
32
50.S
36
56.S
805 905 690 1395
40
1.60
63.S
67
71.S
70
590
740
1040
690
840
1140
535
670
950
890
1180
1640
0.50
1.10
3.0
D
A
B
E
C
Dimensions, mm
DIMENSIONS
VA - Speed controller
Ref.
M-5
Speed controllers
Ref. M-1
E
SD - Star/Delta switch
Ref. M-7
C
S
C
- centrifu
g
al
D
-
3
phase
E -
1
phase
Fan diameter in cm
Fan speed, no. of poles
S
- suppl
y
air
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.
50
50
50
90
50
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.
Typical Applications
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.
Features
O
Corrosion-proof, robust construction.
O
Choice of speeds available.
O
Ideal for ducted installations.
O
Fitted bird mesh prevents debris and birds entering
building and interrupting motor operation.
O
High performance backward-curved centrifugal impellers
fitted.
O
Can be mounted at angles up to 30°.
O
Some 3-phase motors are 2-speed star/delta design as
standard.
O
Speed-controllable using electronic or auto-transformer
controllers.
O
For axial supply air units refer to pages
D-13/15.
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
See pages
O-2/3
for details of 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
Wiring Diagram
See page
N-8
,
diagram
ER 1, 2, 4, 5.
ANCILLARY EQUIPMENT
HOW TO ORDER
SUGGESTED SPECIFICATION
Scan the QR Code
to view wiring
diagrams or more
information online.