Rittal Liquid Cooling Package 61
16 Further technical information
16
16 Further technical information
16.1 Coolant information
To avoid damage to the device, Rittal prescribes the use
of coolant R410A.
R410A is virtually azeotropic and is comprised of equal
parts of R32 and R125. The basic properties of R410A
are:
– No ozone depletion potential
–Clear
– Liquefied gas smelling of ether
– Non-combustible
– Low toxicity
16.2 Characteristic curves
16.2.1 Cooling output
Due to the device configuration comprising two sub-
units, and the partially linear operation of the compo-
nents (fan, inverter-controlled compressor), the cooling
output of the device is dependent on various factors:
– External temperature at the installation site of the ex-
ternal condenser
– Heat loss from the server enclosure
– Inlet temperature of hot air into the LCP DX
– Settings
The charts and tables apply to the following operating
data:
– Exterior temperatures between -5°C and +42°C
– Cooling output from 3 kW to 12 kW in 3 kW incre-
ments
– Setpoint temperature +22°C for the LCP Inline DX/
Rack DX
Exterior temperature -5°C
Fig. 64: Diagrammatic view
Caution!
The LCP DX may only be operated with
coolant R410A. Use of any other coolant
will invalidate the guarantee.
Caution! Risk of malfunction or damage!
Installation, and in particular the coolant
line pipework between the external con-
denser and the LCP DX, must only be
carried out by trained, qualified and ac-
credited cooling system specialists.
Property Value
Composition 50%: R32 (CH
2
F
2
)
50%: R125 (C
2
HF
5
)
Molar mass [g/mol] 72.585
Boiling point [°C] -52.7
Vapour pressure [bar] 12.46 at 15°C
Relative density 1.11 at 15°C
Tab. 33: Material data for R410A
Note:
Safety data sheets are available as down-
loads on www.rittal.com.
Exterior tempera-
ture [°C]
-5
Cooling output [kW] 3 6 9 12
Inlet temperature
[°C]
25.23 27.71 29.07 32.97
Outlet temperature
[°C]
22.19 22.03 21.68 23.52
dT [°C] 3.04 5.68 7.39 9.45
Output [kW] 0.738 1.522 2.477 4.198
Tab. 34: Tabular view
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