6 Installation
EN
18
Rittal Liquid Cooling Package
6
Installation
6.1
Cooling water connection
The Liquid Cooling Package is connected to the cold
water network via two DN 25 (G1") threaded pipe con-
nections (external thread) on the inlet and return (on the
underside of the unit). The connection nozzles are posi-
tioned vertically downwards. If there is a raised floor
present, connection to the on-site cold water network is
made in a downward direction.
Fig. 20:
Cold water network connection
Key
1
Door bracket hinge
2
LCP Hybrid
3
Server enclosure
4
Cooling water connection, inlet
5
Cooling water connection, return
Tichelmann principle and hydraulic balancing
For an efficient cold water supply to the Liquid Cooling
Package, the cold water system must be hydraulically
balanced. If the hydraulics are not balanced, the LCP
systems will not be supplied homogeneously with the re-
quired volume of cold water. This will adversely affect ef-
ficient operation.
Fig. 21:
Cooling distribution without hydraulic balancing
Key
1
Circulating pump
2
Shut-off valve
3
Fine filter
4
Return
5
Supply
6
Pump pressure
7
Appliance to be cooled (LCP Hybrid)
8
Pipe friction pressure factor
9
Opening of control valve
10
Control valve
Here, hydraulic balancing can be achieved via balancing
valves.
Caution!
When installing, observe the applicable
specifications concerning water quality
and water pressure.
Caution!
Connection of the LCP Hybrid to the
cooling water supply may only be carried
out by properly trained staff.
2
1
3
5
4
Recommendation:
Ideally, Liquid Cooling Packages should be
connected to the cooling water circuit via a
water/water heat exchanger when using a
water/glycol mixture.
Benefit:
– Reduction of water volumes in the second-
ary circuit,
– Setting of a defined water quality,
– Setting of a defined inlet temperature and
– Setting of a defined volumetric flow.
