Innova Stone Monoblock M1, Руководство по установке, Страница: 33 / 72

33
INSTALLATION
Connection to the system
Preliminary warnings
To allow maintenance or repair operations, each hydraulic
connection must be equipped with the respective manu-
al shut-off valves.
It is advisable to create a by-pass in the plant to be able to
wash the plate exchanger without having to disconnect
the appliance.
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 connecting
pipes must be 1". Keep in mind that undersized pip-
ing 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.
Plants filled with antifreeze or special legal provisions re-
quire the use of hydraulic disconnectors.
Flush the plant thoroughly before connecting the unit.
This cleaning process removes any residue, such as weld-
ing drops, slag, rust or other fouling from the pipes. These
substances may otherwise settle inside and cause the ap-
pliance to malfunction.
Hydraulic lines and joints must be thermally insulated.
Insulate the water distribution piping with polyethylene
foam or similar materials with a minimum thickness of 13
mm. Shut-off valves, elbows and various fittings must also
be adequately insulated.
Avoid partial insulation of the pipes.
Avoid over-tightening the pipes to avoid damage to the
insulation.
Carefully check that the insulation is tight, in order to pre-
vent the making and dripping of condensate.
Installing a mains water filter at the inlet of the ap-
pliance in an area accessible for maintenance is com-
pulsory to safeguard the appliance from impurities in
the water.
Two antifreeze valves must be installed on the plant
delivery and return hydraulic piping.
Operating the unit without the water filter installed and
clean is forbidden.
Hydraulic connection diagram
1� Plate exchanger
2�
Flow switch (differential pressure switch)
3�
Expansion vessel
4�
3-bar safety valve
5�
Antifreeze valve
6� Network water filter
7�
Flexible connections
8�
Shut-off valves
9�
Plant drain cock
10�
Automatic plant filling assembly
11� PP1 primary circulation pump
12�
Electric heating element (accessory)
13�
By-pass valve
1
3
2
4
12
11
5
5
6
7
7
8
10
13
9
8