24
The unit must be connected directly
t o a n e l e c t r i c a l o u t l e t o r a n
independent circuit.
WARNING: The power cables must be
connected to Phase (L) and Neutral
(N); do not reverse the wiring and
follow the wiring diagram.
Install an electrical isolator or plug
that allows the electrical power to be
completely isolated from the unit.
To protect the unit against short
circuits, fit a circuit breaker of max.
2A 250V (IG) to the power line with a
minimum contact opening distance
of 3 mm.
For installation with three phase power
consideration must be given to the
following precautions:
1. With 3P + N isolators or circuit breakers
the interrupt capacity must be at least
170% of the total absorbed load of the
fan coil units for each phase.
2. The cross section of the neutral cable
must be at least 170% of the total
absorbed load of the fan coil units for
each phase.
CONNECTION CABLE CHARACTERISTICS
The electrical power cable must be of the
H05V-K or N07 V-K type with 300/500V
insulation rating enclosed inside a tube
or conduit.
Use a cable cross section of 1mm
2
minimum.
All the cables must be enclosed inside a
tube or conduit until they are within the
fan coil unit.
The cables at the outlet of the tube or
conduit must not be subjected to stress
or twisting and must be protected from
external forces.
Stranded cables can only be used with
cable lugs. Ensure the strands are
correctly inserted.
Electrical wiring diagrams are subject to
constant updates. Always refer to the
wiring diagrams inside the unit
.
The control panel cannot be mounted
on a metallic wall unless this is
permanently earthed.
C a r e f u l l y r e a d t h e i n s t r u c t i o n s
before installing the control panel
and if necessary proceed with the
configuration of the panel. Some
controls panels require connection
to other components supplied as
accessories; ensure these are available
.
WARNING: Check that the control panel
can support the motor electrical load,
otherwise add the interface accessory
SIT3 between the fan coil unit and the
panel.
WA R N I N G : U n i t s e q u i p p e d w i t h
thermostats of the VMF series must be
combined with an interface accessory
VMF-SIT.
Comply with the elec trical wiring
diagrams when connecting the control
panels
.
If provided, connect the valve and the
sensor to the terminal block positions
shown in the wiring diagram. In
installations with the 3 way valve the
minimum temperature water sensor
must be moved from its coil mount to
the flow tube upstream of the valve.
If the highest motor speeds have to be
used modify the terminal connections
of the electric motor. Refer to the wiring
diagram.
WARNING: Ensure that the installation
has been carried out correctly. Follow
the check procedures shown in the
control panel manuals.
ELECTRICAL CONNECTIONS
SPEED SELECTION: VES 030 - 040 - 130 - 140 - 230 - 330
VES 0 - 1 - 2
V1
V2
V3
V4
V5
V6
L6
L5
L4
L3
L2
L1
Velocità
- Speed - Vitesse- Geschwindigkeit-Velocidad
Collegamento Motore
- Connection to Motor - Connexion à moteur- Verbindung zum Motor - Conexión a Motor
NO!
NON!
NEIN!
OK!
STANDARD
