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3. Mounting
3.1
Choosing the installation site
◾
When choosing the installation site for the enclosure, please
observe the following:
–
The site for the enclosure, and hence the position of the
roof-mounted fan, must be carefully selected so as to ensure
good ventilation.
–
The site must be free from excessive dirt and moisture.
–
Roof-mounted fans must always be installed on horizontal
panels (roof).
–
The ambient temperature must be lower than the admissible
enclosure interior temperature.
–
The mains connection data as stated on the rating plate of
the unit must be guaranteed.
3.2
Notes on installation
3.2.1
General
◾
Check the packaging carefully for signs of damage.
Any packaging damage may be the cause of a subsequent
functional failure.
Note:
The inlet filter must ensure an adequate air exchange.
–
The enclosure must be sealed on all sides (IP 54). If the
enclosure has a leak, unfiltered, contaminated air may enter
the enclosure.
–
The fan motor is a rotating component that may transfer
vibrations and oscillations.
–
Appropriate measures to decouple vibration must be taken in
advance by the company responsible for the overall plant or
system.
–
During transportation, the roof-mounted fan must be secured
in accordance with section 3.3.2 or section 3.3.3 to prevent
damage.
3.2.2
Layout of the electronic components in the enclo-
sure
◾
Take note of the air flows from the internal fans of installed
electronic components.
◾
When installing the roof-mounted fan, it is important to ensure
that the airflows of fans and built-in electronic components do
not adversely influence one another (air short-circuit).
◾
The corresponding minimum distances between the fan and
component must be observed in order to ensure unhindered
air circulation.
Rittal roof-mounted fan
3.2.3
General
◾
Carefully deburr the cut-out to prevent injuries caused by
sharp edges.
–
The position of the roof-mounted fan in the mounting cut-out
is freely selectable. It should be based on the position of the
electrical connection inside the enclosure.
–
No filter mats are needed in order to achieve protection
category IP 21.
◾
Check that the clips are completely snapped into place to
ensure that the roof-mounted fan is securely held in the
mounting cut-out.
–
The filter mats may be removed to achieve a higher air
throughput. In this case, the protection category will be
reduced to IP 21 and UL Type 1.
◾
Use only original Rittal filters which bear the Rittal logo to be
sure of the protection category, air throughout and approvals.
–
The protection category of the roof-mounted fan can be
raised to IP 55. To this end, the pleated filters must be
replaced with Rittal filter mats SK 3174100. The side with the
Rittal logo must face towards the fan (see section 3.3.4).
–
Note: This reduces the air throughput. For details, please
refer to the performance diagrams which can be found on the
Rittal website.
–
You should inspect the filter regularly depending on the
amount of dust. Recommended: Replace after 2,000 operat-
ing hours at the latest, and as and when necessary.
–
The orientation of the cover on the base tray is freely selecta-
ble.
7
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