10
2.7. REFRIGERATOR CONNECTION
2.7.1. Equal level installation
1)
2)
3)
4)
5)
6)
7)
8)
9)
General criteria that must be satisfied in the installation of
the remote units:
Slope of the pipes (Fig.8)
Fastening brackets onto the insulated pipes.
The number of brackets to be applied to the refrige-
rator connection line of the remote units
see
Table 6.
Hermetic sealing (Fig.10).
Execution of the vacuum (0.03 mBar) in the connec-
tion pipes (flow and intake).
Check vacuum sealing of the pipes.
Opening of the shut-off valves on the condensing
unit.
Leak check.
Check of the exact gas load via the liquid passage
indicator light on the condensing unit.
Check of the circulation and pressure of the conden-
sing water (systems with water cooling).
The criteria indicated above are sufficient for
installation at equal level (Fig.11).
The pipes must be installed so that their lengths may be
varied, using supports so they can slide and that provi-
de sufficient space near to the walls and other obstruc-
tions.
If the cabinet holder's heat exchangers can be shut-off
from the rest of the plant via valves, these exchangers
must be protected by suitable safety devices as forese-
en by the Standard EN378-2:2008+A1:2009 in chapter
6.2.6.8.
For water-cooled units or units with heat recovery: for
the choice and installation of the water pipes, the local
provisions and regulations regarding constructions and
the safety standards must be followed.
The installer must provide mechanical coupling of the
appropriately sized connections to the system and make
sure that the water inlet and outlet connections are
compliant with the dimensional drawing and with the
labels on the connections. The pipes must be supported
to reduce weight and strain on the connections. A filter
that can be inspected for filtering solid bodies must be
installed on the inlet pipe to the exchanger. If the noise
and vibrations are critical, anti-vibration joints must be
installed on the water inlet and outlet pipes from the
exchangers.
2%
COMPRESSORE
COMPRESSOR
Tabella 6
DISTANCE
Cell -> Remote unit
NUMBER
OF BRACKETS
5 metres
2
10 metres
3
15 metres
5
20 metres
7
25 metres
8
Fig. 8
Fig. 9
Fig. 10
Equal level
installation
Fig. 11
