3 Device description
3
12
Rittal Liquid Cooling Package
Fig. 8:
LCP DX rear – rear door open
Key
1
Rear door
2
Condensate collecting tray
3
Compressor
4
Connection lines to the external condenser
5
Inverter
6
Heat exchanger (evaporator coil)
7
Electronics box with voltage connection and network
connection
The device variants differ as follows at the rear:
– LCP Rack DX: Solid rear door
– LCP Inline DX: Perforated rear door
The LCP DX consists of a solid welded frame in which
the evaporator coil, fan modules and compressor are in-
stalled.
3.3.2
Coolant circuit
The coolant circuit consists of the following compo-
nents:
– Compressor: The compressor compresses the cool-
ant and causes it to circulate from the low-pressure
side (evaporator coil) to the high-pressure side (exter-
nal condenser). The motor is activated by an external
inverter, which controls the speed of the compressor
and therefore allows the cooling output to be precisely
adapted to the actual cooling requirement.
– Evaporator coil: The evaporator coil (air/coolant heat
exchanger) is positioned in the centre of the LCP DX.
Any condensate incurred is discharged into a conden-
sate collecting tray in the bottom section of the device.
– Electronic expansion valve: The expansion valve sup-
plies the evaporator coil with the required volume of
coolant to provide the corresponding cooling output in
the current ambient conditions.
– External condenser: The condenser is sited outdoors
from the room where the LCP DX is situated. Connec-
tion details for the LCP DX may be found in section 6
"Installation".
– Temperature sensors: There are three temperature
sensors installed on the front of the device near the
fans. These measure the cold air temperature and for-
ward the readings to the control unit. There are three
further temperature sensors installed on the rear of the
evaporator coil. These measure the hot air tempera-
ture and likewise forward the readings to the control
unit.
Fig. 9:
Coolant circuit
Key
1
Temperature sensor
2
Inverter
3
Evaporator coil
4
Electronic expansion valve
5
Filter dryer
6
Compressor
7
Refrigerant collector
8
Condensate collecting tray
3.3.3
External condenser
An external condenser is required in order to operate the
device. Only Rittal-supplied condenser units may be
used. The following options are available:
– Model No. 3311.363: Standard condenser
– Low-temperature condenser with winter kit module
– High-temperature condenser
1
7
5
2
6
3
4
2
1
7
8
1
3
1
4
5
6
