Cordivari VNT2000 Design Run Use And Maintenance Manual page 8

8 . Electrical connection
Before making the electrical connection, check the nominal voltage of the
unit (230 V AC 50 Hz) is equal to the mains voltage, and that the socket
is able to provide the rated current corresponding to the maximum power
of the model selected. Moreover, such socket must be controlled through
a double-pole switch used to switch the radiator on and off. In case of
damage, the power cable of these radiators can be replaced. Such repair
must be carried out solely and exclusively by the manufacturer.
Refer to the following wiring diagrams, with and without solenoid valve.
Blue
Valve
Brown
Power
Plug
Valve 1
Valve 2
Reserved interfaces
Cod. 1910000000085 - nv02
DC Fan
Motor
Inlet water
(White)
temperature sensor
(Green) Inlet air
temperature sensor
Wired
Controller
Blue
Brown
Power
Plug
Valve 1
Valve 2
Reserved interfaces
In case of damage, the power cable of these radiators can be replaced.
Such repair must be carried out solely and exclusively by the manufacturer.
9 . Start-up checklist
Before starting the unit, some checks must be made to
make sure that the unit operation is correct. The
following checklist represents a minimum list of checks
to be performed before the system is started up:
1. Make sure the fans are unlocked and can rotate
freely without encountering obstacles;
2. Check the correct water flow in all the pipes;
3. Check that the entire system is in the correct operating conditions as
required for correct installation;
4. Check the correct voltage of the power supply system and check
that it is within the operating limits allowed by the unit;
5. Check that the unit is correctly connected to the electrical grounding
system;
6. Check the correct presence of cut-off devices and electrical
protection;
7. Check that the electric cable connections are duly performed and
tightened;
8. Check for any leaks on all connections and hydraulic fittings;
9. Check that the unit is positioned so as to obtain good ventilation;
After carrying out all the pre-start checks and making sure that the
electrical connections comply with all the regulations in force in the
country of installation, the unit can be started. Connect the unit to the
power supply and follow the start-up instructions as described below. If
loud noises or sounds are heard after starting the unit, disconnect the
power supply to secure the unit.
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English
DC Fan
Motor
Inlet water
(White)
temperature sensor
Valve
(Green) Inlet air
temperature sensor
Wired
Controller