5 Assembly and siting
EN
12
Rittal LCU DX
5
Assembly and siting
5.1
General
5.1.1
Siting location requirements
To ensure proper functioning of the LCU DX, the follow-
ing conditions for the siting location of the device must
be observed.
Climatic conditions
When choosing a siting location for the internal unit
and external unit, please observe the values pre-
scribed in section 11 "Technical specifications" for the
ambient temperature, dewpoint and air purity.
According to ASHRAE Directive TC 9.9, a maximum
room temperature of 30°C at 50% relative humidity must
be observed at the internal unit's siting location. This
equates to a dew point of 19°C. If these limits are ex-
ceeded, there is a risk of condensation forming on the air
outlet of the internal unit.
Floor conditions
– The floor of the installation space should be rigid and
level.
– Choose the location carefully so that the unit is not sit-
uated on a step or uneven surface, etc.
Minimum required thermal output in the enclosure
In order to achieve continuous operation of the LCU DX,
a heat load of at least 1 kW (3 kW version) or 3 kW
(6.5 kW version) respectively must be installed in the en-
closure. Otherwise, intermittent operation of the system
may occur.
5.1.2
Relative positioning of the internal unit to
the external unit
The internal unit and the external unit must be connect-
ed with a suitable copper pipe connection to DIN EN
378-2. The entire system must then be filled with refrig-
erant (cf. section 6.2 "Notes on pipework").
The following distances and geodetic height differences
must not be exceeded when installing the internal unit
and external unit:
5.1.3
Supply connections required at the installa-
tion site
Power is usually supplied to the external unit.
LCU DX 3 kW
LCU DX 6.5 kW
5.1.4
Electromagnetic interference
– Interfering electrical installations (high frequency) are
to be avoided.
5.2
Assembly procedure
5.2.1
Preparatory tasks
The internal unit may be mounted both on the right and
on the left of the TS IT server enclosure.
Before the internal unit of the LCU DX can be installed in
a TS IT server enclosure, the following work should be
carried out.
Slide the 482.6 mm (19") mounting angles 50 mm
away from you.
Recommendation:
Where necessary, these values should be
achieved by installing an additional room air-
conditioning system.
Position
Distance
Maximum equivalent pipeline
length
LCU DX 3 kW: 30 m
LCU DX 6.5 kW: 50 m
Of which maximum height
difference
12 m
Tab. 3:
Distances and height differences
Connection type
Connection description
Electrical connection
LCU DX 3 kW
230 V, 1~, N, PE, 50 Hz
Electrical fuse provid-
ed by the customer
16 A, miniature circuit-breaker
with C characteristic
Refrigerant connec-
tion
Copper pipework
Tab. 4:
Supply connections for the LCU DX 3 kW
Connection type
Connection description
Electrical connection
LCU DX 6.5 kW
230 V, 1~, N, PE, 50 Hz
Electrical fuse provid-
ed by the customer
20 A, miniature circuit-breaker
with C characteristic
Refrigerant connec-
tion
Copper pipework
Tab. 5:
Supply connections for the LCU DX 6.5 kW
Note:
Installation in a Micro Data Center is de-
scribed in the assembly instructions for the
Micro Data Center. The assembly parts re-
quired for the internal unit are included with
the supply of the Micro Data Center.
Note:
The LCU DX may only be operated in combi-
nation with 482.6 mm (19") mounting angles.
Installation with a 482.6 mm (19") mounting
frame is not possible.
