2 | INSTALLATION
13
- the electrical system is compliant with the applicable regulations
and has been installed by qualified professionals
In the event of a replacement, the system must be inspected by the
designer or by another competent person, and must be compliant
with the technical requirements, as well as the current legislations
and regulations.
The manufacturer shall bear no responsibility for any damages
caused by incorrect system installation.
2.10 Refrigerating connection
The dimensions and positions of
cooling connections are shown
hereunder.
MODELLO 18000-2
1
Gas line connection
2
Liquid line connection
3
Service connection
Model
18000-2
Connections
Liquid line connection
Pollici
2 x 1/4
Gas line connection
Pollici
2 x 3/8
Liquid line connection
mm
2 x 6.35
Gas line connection
mm
2 x 9.52
To access the cooling connections:
- unscrew the fastening screw
- push down the connection covering panel
- remove the connection covering panel
The cooling pipes must respect the lengths and differences in height as
indicated in the following table.
Model
18000-2
Connection pipes
h1
m
7,50
h2
m
7,50
h max
m
15
H-
m
15
H+
m
15
L1, L2
m
20
L1+L2
m
30
Maximum length with standard
charge
m
20
Additional charge
g/m
20
The R32 refrigerant gas is slightly inflammable and odourless.
Carefully read the safety data sheet available from the dealer and
see table .
Use pipes with the thickness indicated in the following table:
Pipe Ø
Thickness
mm
inches
mm
6.35
1/4
0.8
9.52
3/8
0.8
12.7
1/2
0.8
15.88
5/8
1
Maximum operating pressure 4.3 Mpa.
In case of a drop in excess of 5 m, a siphon must be installed every
5-7 metres.
The given measures are the maximum permitted values.
Cooling connections featuring shut-off valves are preconfigured for
flare connections.
Cooling lines must be as straight as possible and any necessary
bends must have a radius grater than 40 mm.
Use clean hoses. Make sure the inside is free of dust, residues,
water.
Avoid the entry of uncondensable gases (air) in the circuit, otherwise,
with the unit in operation, high pressures with the risk of damages
might ensue.
Use copper pipes for cooling systems.
Use connecting pipes and tools appropriate for the system's
refrigerant.
It is forbidden to use second-hand cooling lines since their flare
connection seal is not guaranteed.
