FRIEDHELM LOH 3313.410, Руководство по сборке и эксплуатации

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Rittal Liquid Cooling Package 21
6 Installation
6
6 Installation
6.1 General
The interior device (LCP DX) and the external condenser
must be connected with suitable copper pipework. This
pipework may either be inserted from above or, if the de-
vice is positioned on a raised floor or on a pedestal, from
below into the LCP DX.
Prior to delivery, the LCP DX is filled with 1.5 bar nitro-
gen. It is therefore crucial that the following steps are al-
ways carried out in the order shown.
6.2 Notes on pipework
The following basic rules should be observed when con-
necting the LCP DX and external condenser.
Connection diameter LCP Rack DX/LCP Inline DX 12 kW: 12 mm/12 mm
General
1. The piping system may be made exclusively of spe-
cial copper pipes that have been cleansed inside
and sealed on both ends. The material of the copper
pipework must comply with the specifications out-
lined in EN 12735-1 / EN 12735-2 and DIN 8964-3.
2. The external diameter of the copper pipe must have
the dimensions specified in the technical data, both
for the hot gas line from the compressor to the con-
denser, and for the liquid line from the condenser to
the expansion valve (see section 11 "Technical
specifications"). The copper pipe must be suitable
for the therein stated admissible pressure PS of the
R410A coolant, see DIN EN 14276-2.
In order to ensure the correct spatial arrangement of the
pipework, particular consideration should be given to
the position of the individual pipes, the flow conditions
(two-phase flow, oil transportation in part-load opera-
tion), condensation processes, thermal expansion, vi-
bration, and good accessibility.
As a general rule, pipelines should be laid in such a way
as to prevent damage associated with routine activities.
For safety reasons, and in order to protect the environ-
ment, the following aspects should be taken into ac-
count when laying pipework:
1. There must not be any threat to human safety, i.e.
escape and emergency vehicle routes must not be
obstructed or restricted in any way. When using re-
frigerants of groups A2, B1, B2, A3 or B3, no de-
tachable connections or fittings must be positioned
in publicly accessible areas. When using other refrig-
erants, protection against unintentional actuation or
disconnection should be provided.
2. Pipework should be protected from the thermal in-
fluence of hot lines and heat sources by means of
spatial separation.
3. Soldering, welding and mechanical joints in connec-
tion pipes (e.g. in split systems) should be carried
out before the fittings are opened, so as to ensure
the flow of refrigerant between the plant parts. A
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.
Note:
Installation of the pipework, creation of a vac-
uum and filling with coolant must only be car-
ried out by qualified, trained staff in
accordance with the valid technical regula-
tions.
Furthermore, when carrying out the installa-
tion, it is important to observe all the pipe-
work instructions in section 6.2.
Type of
condenser Connection diameter condenser
liquid line/hot gas line
[mm]
Equivalent
length
External diameter of coolant lines
liquid line/hot gas line
[mm]
Standard 22/22 Up to 45 m 12/12
Low temperature 16/16 Up to 45 m 12/12
High temperature 22/22 Up to 45 m 12/12
Tab. 4: Refrigerant pipes
Note:
The routing and brackets of the pipework
have a significant influence on the operational
reliability and service-friendliness of a cooling
system.