2
3. Storage
Correct storage is important for the
function and durability of the fans.
Damages due to incorrect
storage void the warranty.
4. Installation
4.1 Before installation
Unpack the jet fan by removing the top
and sides of the box. Leave the fan on the
support on which it rests.
Check that the impeller can rotate freely
in the fan casing.
Mount the enclosed suspension brackets
on either side of the fan casing. Tighten
them with a torque of at least 23 Nm.
4.2 Installation
The jet fans must be installed with an
open inlet area below the fans. The outlet
side must have a minimum of 2 m
obstruction free clearance. Obstructions
include beams, columns, and other large
objects that affect the airflow.
The fans are fitted with arrow signs
indicating the direction of airflow and
rotation.
The suspension brackets are
dimensioned to leave a minimum of
5 mm space between the ceiling and the
top of the fan casing. The brackets must
be the only contact points with the
ceiling and the 5 mm space must be
available across the entire surface. This is
to ensure the dampers work properly.
If jet fans are mounted within the fire cell
- the fire room - they must only be
installed on non-flammable ceilings and
materials. The installation must comply
with current national regulations. Jet
fans should in general be installed so that
there is no risk of them falling down in
the event of fire.
Expansion bolts without approval for
high temperature must be of steel, be
minimum M10, and must be installed
twice as deep as required by the
approval and at least 60 mm. The static
load must not exceed a pull of 500 N.
Expansion bolts with documented load
capacity during fire must be installed
and loaded as stated in the approval.
Mount the jet fan to a horizontal plane
with a natural frequency at least 20%
from the fan rotation speed.
After final fastening of the fan check that
the impeller rotates freely in the fan
casing.
To ensure performance and sound level
the airflow must be unobstructed.
4.3 Electrical connection
The installation and connection
to the supply network must be
done by authorised personnel
and according to current legislation,
e.g. the EU standard for
electromagnetic compatibility (EMC).
In the following, refer to figures 4 and 5.
Wire the fan power cable in compliance
with current rules and legislation.
Connect the fan through the motor
protection switch based on the nominal
motor current. The connection must be
made directly in the terminal box
mounted internally below the plate
cover.
Conditions
Specifications
Comments
Outdoor
One month
• Packaging must be
intact
Indoor or
sheltered
Max. six months
• For unprotected
fans with no or
broken packaging
• Ventilated
location
• No condensation
Prolonged
Max. two years
• Indoor
• Remove
packaging
• Ventilated
location
• No condensation
• Turn rotor
20 times every six
months
• Add additional
anti-corrosive
coating on motor
shaft
• Change motor ball
bearings after two
years of storage
Vibrations
No
• Location must be
vibration free
Temperatures -25 to 65 °C
• Constant
temperature,
preferably 20 °C
• Ventilated
• No condensation
Humidity
Below 70%
• Avoid
condensation
• Exceedance
requires airtight
packaging of
complete fan and
use of a moisture
absorbent agent
such as silica gel
Table 1.
Storage recommendations
Figure 3.
Mount suspension brackets
23 Nm
A
A
B
C
D
E
F
G
H
I
J
CGF 500
1297
908
269
73.5
36
858
790
509
8
280
Figure 2.
Dimensions [mm]
C
D
A
E
I
F
G
H
J
B
