irinox C504, Руководство по эксплуатации и обслуживанию, Страница: 12 / 28

12
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 2 yd 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).
2.7.4 Calibration of pressure switches R404a
Fig.12 Fig. 13
Installation at
different levels
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
27 yd (
see table 7 ).
For greater distances please consult the manufacturer.
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.
Table 7
Condensing
unit model
Model
of
matched
cell
Delivery
line
Suction
line
Hot gas
line
Condenser
inlet line
Condenser
output line
Ø mm
C504 CP40
(1): for unit with remote condenser
0,39“ 0,47“ 0,39“ - -
0,74“
For calibration of pressure switches R404a see table 8 Note: all units without a unit of measure are expressed
in (relative pressure).
Table 8
Model
Low
pressure
(L.P.)
High
pressure
(H.P.)
Fan
start-up
Safety
valve
Safety
valve
Low
pressure
(L.P.)
High
pressure
(H.P.)
PSI - PSI PSI PSI PSI PSI
AIR COOLING WATER COOLING
C504 0 0 min min 363 400 247 428 413
PSI -