Rittal enclosure cooling unit 7
4 Assembly and connection
EN
4.2.2 Layout of the electronic components in the
enclosure
Fig. 4: Never direct the cold airflow at active components
Air diversion components are available as accessories –
please refer to the Rittal Catalogue.
It is important to ensure even air circulation inside the en-
closure. Under no circumstances should air inlet and
outlet openings be obstructed, otherwise the cooling
performance of the unit will be reduced. Ensure the dis-
tance "x" (see fig. 5) from components and other in-
stalled enclosures so that the required air circulation is
not obstructed and prevented.
Fig. 5: Air circulation inside the enclosure
4.3 Fitting the cooling unit
The enclosure cooling unit may optionally be externally
mounted on the enclosure (1), partially internally mount-
ed (2) or fully internally mounted (3):
Fig. 6: Installation method
To this end, cut the side panel or door of the enclosure
as per the drilling template included with the supply, and
drill the relevant holes.
Note:
Risk of condensation!
When arranging the electronic components
inside the enclosure, please ensure that the
cold airflow from the cooling unit is not di-
rected at active components. Please also
ensure that the cold airflow is not directed at
the warm exhaust airflow from active com-
ponents such as converters. This may lead
to an air short-circuit and therefore prevent
adequate climate control, or may even
cause the cooling unit’s internal safety de-
vices to cease cooling operation.
Note:
Units of type 3302.xxx and 3366.xxx can
only be either externally mounted or fully in-
ternally mounted.
Units of type 3332.xxx can only be either ex-
ternally mounted or partially internally
mounted; they cannot be mounted in locka-
ble doors on 600/1200 wide TS enclosures.
To mount units 3328.xxx, 3329.xxx and
3332.xxx in the TS side or rear panel, we
recommend using enclosure panel fasten-
ers 8800.071 (see Rittal Catalogue). For
high dynamic loads and mounting on the
enclosure door, we recommend using rein-
forced door hinges 8800.710 (see Rittal
Catalogue). Units with protection category
NEMA 4X are only suitable for external
mounting.
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