159 / 416
© FANTECH
2016
D
ROOF MOUNTED FANS
D-13
DESCRIPTION
The Alpha Series of supply air roof units have been designed for
use in free intake or ducted installations. These robust but
lightweight units are fitted with bird mesh as standard to prevent
debris and birds entering the building and interrupting motor
operation. There are 10 models in the series extending from 200
to 630mm diameter.
Typical Applications
Ideal for supplying fresh air to an air handling unit or to an air
conditioning system. Also suitable where make-up air or positive
pressure is required in the ventilated space.
Features
O
Robust, corrosion-resistant construction with high
performance axial flow impellers.
O
Large choice of speeds available.
O
The MV units have durable powder-coated steel blades.
The AD/E units have GRP blades as standard with an
option of aluminium, nylon or anti-static.
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 centrifugal supply air units refer to pages D-32/33.
Construction
Cowls are of UV-stabilised plastic
Steel components have a corrosion resistant finish
MV units have powder-coated galvanised steel impellers
AD/E have GRP blades as standard with an option of
aluminium, nylon or anti-static material where required
Bird-mesh guards are fitted as standard
Shutters cannot be fitted.
Motors
Type - MV - external rotor, squirrel cage induction motors
AD/E - 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
See pages O-2/3 for details of motors in MV units and pages
O-3/4 for details of the AD/E units
Internal Thermal Protection
Auto-reset protection is supplied on all MV units and
manual-reset on the AD/E units.
Testing
Air flow tests to BS848:Part 1 1980
Noise tests to BS848:Part 2 1985
Wiring Diagram
For MV units see page N-8, diagrams ER 4, 6.
For AD/E units see page N-6/7, diagrams DD 4, 5, 6, 7.
SUGGESTED SPECIFICATION
The axial roof units shall be of the Alpha Supply Series as
designed and manufactured by Fantech Pty Ltd.
The axial impellers shall be of powder-coated galvanised
steel or GRP (unless specified otherwise) and driven by
speed-controllable motors with integral thermal protection.
The impellers run in pressed steel plates ensuring a certifiable
performance.
The cowl shall be constructed from UV-stabilised plastic and
steel components shall be corrosion protected.
All models shall be fully tested to BS848:Part1, 1980 for air flow
and BS848:Part 2, 1985 for noise.
SD - Star/Delta switch
Ref. M-7
VA - Speed controller
Ref. M-5
ANCILLARY EQUIPMENT
ALPHA SUPPLY SERIES