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mitted to change the specifications or to make modifica-
tions of any kind, to this appliance.
3. Installation
3.1 Suspension
•
The method/products used to suspend the unit
must be fit for the purpose.
•
The minimum suspension height is 4.0m. .
•
Install the unit with 2 persons, keeping in mind,
working at height and the weight of the unit.
•
Take care and assign a safe area when working on
this appliance
•
Use certified access equipment.
•
Take care of personal safety. Use safety
gloves and safety shoes.
Each unit has been fitted with 4 suspension eyes for use
with chains or steel wire (not included). Ensure the appli-
ance has an uninterrupted supply of air on both inlet &
outlet, a minimum clearance around the air inlet of 0.5m
should be observed.
3.2 Calculating number of fans required
Calculate the volume of the space in m
The resulting figure is the volume in m
DSF destratification fans.
Select the DSF model based upon air output, throw of the
unit and height of the room. Then simply take the calulat-
ed air volume and divide by the air volume produced by
your selected DSF model. The resulting figure is the qty
needed for your application.
NOTE
Selecting a DSF model with the highest air volume
is not nessecarily the best solution. It is important to
achieve uniform air distribution throughout the space,
for maximum comfort and reduced running costs.
Occasionally it will be nessecary to install more DSF fans
that calculations indicate to achieve uniform air distri-
bution. In these scenarios, where possible, reduce the
model size and increase the quantity.
IMPORTANT
Always ensure the model of fan is capable of
being installed at the height you propose.
3.3 Positioning
Position the destratification fan preferably towards the
end of the throw or area that is not directly served by the
heaters throw.
In general, a higher number of fans provides better air dis-
tribution.
Each DSF fan should be fitted approx. 1.0m beneath the
roof or ceiling, but not closer than 0.5m. The distance be-
tween floor and fan may not exceed the distance stated in
the technical data as this will prevent the warm air from
reaching low level.
On the outlet of the DSF units are a series of twist and set
outlet louvres. It is essential that these louvres be opened
before the fan unit is switched on for the first time.
The louvres are intended to ensure that the airflow from
the fan unit is correctly distributed. Each louvre should be
opened to an angle of at least 45
set at maximum deflection, there will be a severe draft
when the unit is suspended too low.
4. Electrical Connections
WARNING!
electrical circuit you are working on has been shut off.
This appliance must be earthed!
4.1 230Vac supply
The installation must comply with all applicable local and/
or national standards.
All DSF units are supplied fully wired and come with
a plug-in 2m flying lead. This should be connected to a
fused mains isolator (locally mounted).
, multiply this by 2.
3
The fitted thermostat should be set to the temperature at
/h needed by the
3
which the fan is required to be switched on (typically 2 to
5
O
5. Operation and Maintenance
WARNING!
the electrical circuit you are working on has been isolat-
ed.
The appliance must be earthed.
5.1 Operation
The DSF unit does not need manual control, it is automat-
ic. Generally temperature setting has to be done by
the installer.
The user is allowed to do following settings:
5.2 Maintenance
In areas where heavy dust is present, it may be necessary
to clean the fan & guard with compressed air once a year.
If the guard is covered with severe dust, the fan will not
provide optimal performance.
Check if the appliance turns ON and OFF as it should on
the thermostat.
Pay attention on:
Before starting installation ensure that the
C above ambient set-point).
Before starting maintenance make sure that
•
Set the temperature at which the fan should ven-
tilate.
•
Turn ON/OFF main switch
•
The ON and OFF switching from the thermostat
•
The smooth rotation of the fan
•
Remove any dust from the appliance
•
Check that the fan does not have severe vibration
because of unbalance on the fan blades
. Even with the louvres
O
3
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