Innova Stone Monoblock M1, Руководство по установке, Страница: 35 / 72

35
INSTALLATION
2�13 Filling the plant
The plant must be filled once the hydraulic connections have
been completed.
Preliminary warnings
A filling system external to the unit must be provided.
All operations must be carried out with the machine
stopped and disconnected from the power supply.
If an external auxiliary pump is used, it must be switched
off.
The operating pressure of the plant must not exceed 1.5
bar with the pump off. To check for leaks in the plant dur-
ing testing, it is advisable to raise the test pressure and
then discharge it later to reach the correct working pres-
sure. If the pressure exceeds 3 bar, the safety valve opens
and discharges the excess water outside.
Water quality requirements
The quality of the water used must comply with the require-
ments set out in the following table; otherwise, a treatment
system must be provided.
Plant water reference values
pH
6,5 ÷ 7,8
Electrical conductivity
µS/cm 250 ÷ 800
Total hardness
°F 5 ÷ 15
Total Iron
ppm 0,2
Manganese
ppm < 0,05
Chlorides
ppm < 250
Sulphur ions
none
Ammonia ions
none
Well or groundwater not coming from an aqueduct should
always be carefully analysed and, if necessary, conditioned
with appropriate treatment systems.
A water softening plant must be used if the initial water
hardness exceeds the value indicated in the table.
An excessive water softening (total hardness < 1.5 mmol/l)
could generate corrosive phenomena in contact with me-
tallic elements (piping or parts of the boiler). Also keep the
conductivity value within 600 μS/cm.
Check the chloride concentration at the outlet after resin
regeneration.
Introducing acids into the washing circuit is forbidden.
Constantly or frequently topping up the plant is forbid-
den because this can damage the heat exchanger of the
appliance.
Filling
Before starting the filling operation:
– set the plant master switch in the OFF position.
– check that the plant drain cock is closed
– open all the air valves of the plant and its terminals
– open all the system's shut-off devices
To fill the system:
– start filling by slowly opening the plant water filling cock
on the outside of the appliance
When water starts coming out of the terminal vent
valves:
– close the breather valves
– continue filling up to the pressure value required by the
plant
– check that the expected nominal pressure has been
reached
– close the water tap
– check the tightness of the gaskets
It is recommended to repeat this operation after the de-
vice has been running for a few hours.
Regularly check the system's pressure.
Keep the system bleed during operation, penalty, loss of
performance and energy consumption.
2�14 Electric connections
The appliance leaves the factory fully wired and only needs
to be connected to the power supply, Control Panel, discon-
nector and any accessories.
For the operation of the unit, the Control Panel must
be ordered as an accessory.
Preliminary warnings
All operations of an electrical nature must be carried out
by qualified personnel having the necessary legal require-
ments, trained and informed about the risks related to
such operations.
All connections must be made following the regulations
in force in the country of installation.
Before carrying out any work, make sure that the power
supply is switched off.
The unit must only be powered after all plumbing and
electrical work has been completed.
References:
• refer to the wiring diagrams in this manual for the electri-
cal connections, especially the part concerning the power
supply terminal block
• refer to the technical rating plate located on the appliance
for the power supply voltage
Make sure that:
• the characteristics of the electric network are adapted to
the absorption of the apparatus, considering also any oth-
er devices in parallel operation
• the power supply voltage and system frequency match to
the values indicated on the device's plate data