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© FANTECH
2016
D
ROOF MOUNTED FANS
D-7
DESCRIPTION
Model
RDLE..
RVLE..
RSSL..
Fan
Speed
rev/sec
Max.
Motor
kW
App. vol.
RD..
m
3
App. vol.
RV..
m
3
0504
24
1.5
0.83
0.72
0506
16
0.37
0564
24
2.2
0.83
0.72
0566
16
0.75
0634
24
4
1.60
1.30
0636
16
1.1
0638
12
0.55
0714
24
5.5
1.60
1.40
0716
16
2.2
0718
12
0.75
0804
24
7.5
3.10
1.80
0806
16
4
0808
12
1.5
1004#
24
7.5
3.80
2.60
1006
16
5.5
1008
12
3
ALPHA & BETA INDUSTRIAL SERIES
The Alpha & Beta Industrial Series of axial roof units are
designed for a wide range of free intake and ducted exhaust
systems. These durable and robust units feature adjustable pitch
impellers which allows for optimum air flow and power efficiency.
There are 6 sizes in each range extending from 500 to 1000mm
diameter.
Typical Applications
Exhausting clean air and a range of toxic, noxious and
corrosive gases from a wide range of commercial
and industrial applications.
Features
O
Wide choice of speeds available.
O
Adjustable pitch impellers provide a wide range of performances.
O
Impeller blades can be GRP, aluminium, nylon or anti-static
to suit the application. GRP blades are standard.
O
Shutters are standard on the RVLE range and an optional
extra on the RDLE units. (See Special Note).
O
Can be used for free intake or ducted systems.
O
Can be mounted at angles up to 30
o
.
O
All standard motors are speed-controllable using
variable speed drives.
O
Multi-speed motors as well as motors to meet Ex d, Ex e,
Ex nA or Ex tD Standards can be supplied.
O
For applications prone to high prevailing winds refer to
Special Note.
Construction
Pressed galvanised steel base; cowls and windbands are of
plastic, fibreglass or galvanised steel.
Shutters are fitted as standard to the Beta series and are an
optional extra on the Alpha series.
Impeller blades are GRP as standard with an option of
aluminium, nylon or anti-static materials where required.
Metal components have a corrosion resistant finish.
Motors
Type - squirrel cage induction motors.
Electricity supply - motors to suit a wide range of voltages and
frequencies can be supplied.
Bearing - sealed-for life, ball.
Speed-controllable using variable speed drives.
See pages
O-3/4
for details on these motors.
Motors with 2-speed windings or to meet Ex d, Ex e, Ex nA or
Ex tD Standards can be supplied.
Internal Thermal Protection
Thermisters can be provided on all motors except where
Standards prohibit their use.
Testing
Air flow tests to BS848:Part 1, 1980
Noise tests to BS848:Part 2, 1985
Wiring Diagram
See pages
N-6/7
diagrams
DD 1, 2, 3, 9.
Special Notes
Quick select envelope curves are shown on pages
D-8/9.
Accurate
selections, including comprehensive noise data, can be obtained from your
local Fantech office or by using the Fans by Fantech Product Selection
Program. Refer to Fantech for performances at speeds other than shown.
When shutters are fitted ensure the roof unit is mounted with the shutter
spindle pointing down the roof. When shutters are fitted to the Alpha series
derate the performance by 15-20%.
Where prevailing winds are high we recommend the fitting of Magloks
®
, see
page
J-8
for details. For capacities greater than shown for the Alpha & Beta
Industrial series, refer to the HC and SS series on pages D-60/62.
SMOKE-SPILL APPLICATIONS
The Beta Industrial RSSL Series of smoke-spill fans has been fully tested
to meet the air performance and high temperature test requirements of
Standards AS/NZS1668.1:1998 and AS4429:1999.
Discharge damper fail-open latching
An additional requirement of AS/NZS1668.1:1998 with respect to
un-sprinklered buildings (300
o
C for 30mins) requires dampers to
fail-open during smoke spill operation.
The fail-open discharge damper latches come in two forms;
the first being a manual release type requiring manual closing
after the fan has been run. The second design, an electro-mechanical
type permits the shutter latch to release and close automatically
after the fan stops.
For advice on smoke-spill wiring requirements refer to
AS/NZS1668.1:1998.
See page
C-8
for details of the smoke-spill range.
TECHNICAL DATA
# Vertical discharge RVLE only.
Amperages for motors can be obtained at time of order.
HOW TO ORDER