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ALPHA & BETA SERIES
Electrical data in
bold
type refers to fans fitted with 2-speed star/delta motors as
standard.
Maximum ambient temperature is 70°C or 50°C when being speed controlled.
* Amperages shown are a guide only. Refer to our Sales Department for accurate
figures at time of order.
ROOF MOUNTED FANS
D
D-4
© FANTECH
2016
The Alpha & Beta Series of axial roof units are designed for a
wide range of free intake and ducted exhaust air installations.
These robust but lightweight exhaust units are available in
7 sizes in each range extending from 315 to 630mm diameter.
Typical Applications
Exhausts air from a wide range of commercial applications
such as factories, warehouses and workshops, gymnasiums,
bulk goods retail outlets and assembly halls.
Features
O
Wide choice of speeds available.
O
All motors are speed-controllable.
O
Some 3-phase motors are 2-speed star/delta design.
O
Protective bird-mesh guards are fitted as standard on Alpha
model unless fitted with optional shutters.
O
Shutters are fitted as standard to the Beta Series.
O
Robust, lightweight construction.
O
Can be used for free intake and ducted applications.
O
Can be mounted at angles up to 30
o
.
O
Supply air units can be supplied, refer to pages
D-13/15
.
Construction
Cowls are of UV-stabilised plastic or fibreglass.
Impeller blades are GRP as standard with an option of
aluminium where required.
Metal components have a corrosion-resistant finish.
Shutters are fitted as standard to the beta series and are an
optional extra on the Alpha series.
A bird-mesh guard is fitted on the Alpha model unless fitted with
optional shutters.
Motors
Type - Squirrel cage induction motors
Electricity supply - 230V, single or 415V, 3-phase, 50Hz
Bearings- sealed-for-life, ball
Speed-controllable using electronic or auto-transformer
controllers
See pages
O-3/4
for details on these motors
Internal Thermal Protection
Manual-reset thermal protection is supplied as standard on all
motors.
Testing
Air flow testing to BS848:Part 1, 1980
Noise tests to BS848:Part 2, 1985
Wiring Diagram
See pages
N-6/7
, diagrams DD 4, 5, 6, 7.
Model
AD..
AE..
Fan
Speed
rev/sec
Avg.
dB(A)
@ 3m kW Amps* kW Amps*
314
22
45
0.09 0.90 0.12 0.50
354
21
49
0.09 0.90 0.12 0.50
404
23
52
0.25 1.80
0.37 1.40
406
16
47
0.12 1.05 0.16 0.93
454
22
54
0.25 1.80
0.37 1.40
456
16
46
0.12 1.05 0.16 0.93
504
23
58
0.55 3.60
0.55 1.75
506
16
51
0.18 1.55 0.25 0.94
564
22
62
0.75 4.90
0.75 2.00
566
16
57
0.25 2.20 0.25 0.94
634
22
66
-
-
1.50 4.30
636
16
60
0.55 6.00
0.55 2.00
AE…1ph.
AD…3ph.
Model
AD..
AE..
63 125 250 500 1k 2k 4k 8k
314
69 67 63 63 60 57 53 49
354
71 70 65 67 66 59 55 54
404
71 72 68 70 69 64 61 56
406
68 66 64 64 65 59 54 47
454
74 75 72 71 70 67 64 56
456
66 64 66 64 61 58 54 45
504
77 81 78 73 72 72 69 62
506
72 67 69 68 69 63 57 51
564
81 83 80 79 78 75 73 67
566
76 73 76 76 73 71 60 56
634
81 82 86 84 80 78 77 72
636
83 80 78 77 76 73 68 59
In-duct Sound Power Levels
L
w
dB re 1pW
DESCRIPTION
TECHNICAL DATA
NOISE LEVELS
Sound Power Levels shown are for the Inlet Side of the unit.
Special note
Refer to Fantech for fan selections at speeds other than shown.
When shutters are fitted ensure the roof unit is mounted with the
shutter hinge pointing down the slope of the roof.
When shutters are fitted to the Alpha series derate performance
by 15-20%.
HOW TO ORDER