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InSTALLATIOn
3�13 Hydraulic connections
3�13�1 Preliminary warnings
The engineer is responsible for choosing the right wa-
ter lines and their size, in accordance with good instal-
lation practices and the applicable law.
The hydraulic system is made by the installer and must
be carried out with reference to the diagrams in this
manual or on the website.
The hydraulic pipes connecting to the appliance must
be suitably sized for the actual water flow rate required
by the plant during operation. The water flow rate to
the heat exchanger must always be constant.
3�13�2 Position and dimensions
1�
Hydraulic connections 3/4" (19 mm)
Hydraulic connection diagram
Seawater circuit must be installed with a slope upwards.
The unit overboard discharge must be installed as close
as possible to the waterline to reduce noise and to be
able to check visually the flow / output of the water cir-
cuit running.
The sea water electric-pump is needed to circulate the
amount of water required in the heat exchanger.
The pump should be installed in a sound insulated en-
vironment.
The pump must be mounted so that it is always at least
20 cm below the waterline
Fix the pump on elastic supports.
16
1
3�13�3 Connection to the system
Preliminary warnings
To allow maintenance or repair operations, each hy-
draulic connection must be equipped with the respec-
tive manual shut-off valves.
Before connecting the piping, make sure that it do not
contain stones, sand, rust or foreign matter that could
damage the plant.
The minimum nominal diameter of the connect-
ing pipes must be 3/4" (19 mm). Keep in mind that
undersized piping determines malfunctions and/
or loss of heating and cooling performance.
The connection piping must be suitably supported so
as not to bear on the appliance with its weight.
Flush the plant thoroughly before connecting the
unit. This cleaning process removes any residue, such
as welding drops, slag, rust or other fouling from the
pipes. These substances may otherwise settle inside
and cause the appliance to malfunction.
It is necessary to install a filtration system at the
inlet of the appliance in an area accessible for
maintenance, in order to protect the appliance
from impurities in the water.
Operating the unit without the water filter installed and
clean is forbidden.
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