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4 Assembly and connection
4.2.2 Layout of the electronic components
in the enclosure
GB
Note:
Risk of condensation!
When arranging the electronic com-
ponents inside the enclosure, please
ensure that the cold airflow from the
cooling unit is not directed at active
components. Please ensure that the cold
airflow is not pointing directly 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 devices to cease cooling
operation.
Fig. 3: Never direct the cold air flow at active components
Air diversion components are available as acces-
sories – please refer to the Rittal Catalogue under
"System climate control".
It is important to ensure even air circulation inside the
enclosure. Under no circumstances should air inlet
and outlet openings be obstructed, otherwise the
cooling performance of the unit will be reduced.
Measure the distance "x" (see Fig. 4) from electronic
components and other installed enclosures so that
the required air circulation is not obstructed and pre-
vented.
8
x
Fig. 4: Air circulation inside the enclosure
4.3 Fitting the cooling unit
The enclosure cooling unit may optionally be exter-
nally mounted on the enclosure (1), partially inter-
nally mounted (2) or fully internally mounted (3):
1
Fig. 5: Installation method
To this end, cut the side panel or door of the enclo-
sure as per the drilling template included with the
supply, and drill the relevant holes.
Note:
Units of type SK 3302.xxx can only be either
externally mounted or fully internally
mounted.
Units of type SK 3332.xxx can only be either
externally mounted or partially internally
mounted.
Rittal cooling unit assembly instructions
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