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5.4.
CONNECTION TERMINALS
This accessory has a number of terminals for the serial connection and the electrical power supply (note that this device must
be supplied with a voltage in the range of 100-240V~50/60Hz); in addition to these terminals, the accessory has other reserved
terminals the use of which is not permitted; the table below summarizes the available ports, their use as well as the type of cable
needed to make the connections.
Terminal
Usage
Power supply
L
supply
N
(100-240V~50/60Hz)
F1
Not
used
F2
G1
Connection
serial CAN-BUS
G2
In the event the panel is installed in a room with strong electromagnetic disturbances, a shielded connection cable must be
(1)
provided;
The Multi systems foresee a dedicated serial line to connect all master outdoor units from which to control the indoor units
(2)
through the MVASZC panel; this serial line (wired on terminals G1/G2 of the units) must respect the length limit specified in the
table;
The Single systems foresee a serial line that starts from the outside unit (or from the outside units in the case of multi-module
(2)
systems) and arrive at the MVASZC panel after passing through each indoor unit; the total length of these serial lines can be
extended up to 1,500m if a cable (of the same characteristics) with a section of 2x1mm
28
Type
Multi system
Three-pole
cable with
/
earthing
/
/
Twisted
250m
jacket
(1)
Cable to use
Maximum length
Single system
(2)
/
/
1000m
is used;
2
Section (mm
)
2
(3)
3G 1.5mm
2
/
2x0.75mm
2
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