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2.7.2. Installation at different levels
If the remote group is installed higher than the unit (fig.
13), it is necessary to fit a siphon at the beginning of each
departure or upward section (a), at intervals of 1.8 metres
of difference in level along the return pipe, and at every
arrival (b).
If the remote unit is installed lower than the unit, siphons
are not necessary (fig. 12).
2.7.3. Refrigeration connection of remote groups
Diameters for appliance feed pipes are sized in accor-
dance with the installation distance up to a maximum of
25 metres (
see table 7).
For greater distances please consult the manufacturer.
Table 7
Condensing
Model
Delivery
unit model
of
line
matched
cell
C504
CP40
10
CP40Plus
C508
10
CP80
CP80Plus
C512
10
CP120
(1): for unit with remote condenser
2.7.4 Calibration of pressure switches R404a
For calibration of pressure switches R404a
Table 8
AIR COOLING
Model
Low
High
pressure
pressure
(L.P.)
(H.P.)
bar
-
bar
C504
0
min
27.6
0
min
27.6
C508
C512
0
min
27.6
All manuals and user guides at all-guides.com
Condenser
Suction
Hot gas
inlet line
line
line
Ø mm
12
10
16
10
10 (1)
16
10
see table 8
WATER COOLING
Fan
Safety
Low
start-up
valve
pressure
(L.P.)
bar
bar
bar
-
17
29.5
0
min
17
29.5
0
min
17
29.5
0
min
12
Fig.12
The insulation of suction and hot gas pipelines
must be carried out using good quality insulators of the
closed-cell type having a minimum thickness of 19 mm.
Condenser
output line
-
-
10 (1)
12
10
Note: all units without a unit of measure are expressed
in (relative pressure).
High
Safety
pressure
valve
(H.P.)
bar
bar
25
28.5
25
28.5
25
28.5
Installation at
different levels
Fig. 13
19 mm
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