5 Assembly and siting
EN
14
Rittal LCU DX
For the "redundant" version, fit the second external
temperature sensor included with the supply, likewise
in a suitable position in front of the server installations.
5.2.4
Mounting the external unit
The external unit may be secured to a solid wall or onto
a flat roof or concrete surface using wall brackets (ac-
cessory, not included with the supply).
Please observe the following instructions regarding the
installation site:
– The external unit is weather-resistant and may there-
fore be installed completely in the open air, with no
need for a weather protection canopy etc.
– For continuous operation, the base surface must rise
above the snow zone.
– It is also important to ensure that foreign bodies such
as leaves cannot be drawn into the external unit.
– The external unit must not be exposed to extreme
wind conditions, otherwise the heat exchanger could
be excessively under-cooled, or the fan would need to
work against the wind and be unable to move the re-
quired volume of air.
– If necessary, a wind break should be installed at a dis-
tance of 1 m from the device.
– If the unit is installed underneath a canopy, there must
be a distance of at least 2 m between the floor and the
canopy.
The following distances should be observed for mainte-
nance purposes:
Fig. 6:
Distances from external unit
Key
1
Air inlet
2
Distance > 300 mm
3
Clearance for maintenance: Distance > 600 mm
4
Air outlet
5
Distance > 200 mm
6
External unit
7
Distance > 600 mm
8
Roof area/foundations
9
Strip foundation
10
Assembly screws/vibration dampers
The installation site of the external unit must be care-
fully selected to ensure an adequate supply and distri-
bution of the airflow, even in unfavourable conditions.
Install the external unit on brackets, remembering to
observe the required minimum distance from the wall.
Attach the external unit to the base plate to avoid the
risk of tipping over.
Fig. 7:
Attachment points for external unit
Key
1
4 x M10 plugs per external unit
2
Distance > 600 mm
2
10
6
6
6
7
8
9
1
1
2
3
4
5
2
1
1
