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62
AST 14 C 257/00
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RS connection and settings
Regardless of the number of boards
used, each board must be connected to
the boiler board in cascade via an RS485
connection, as shown in the diagram on
the right:
The boiler board and the additional boards are provided with a jumper that closes the 485
communication line in case of difficulty in transmitting data between the boards, due to
very long connection lines or electromagnetic interferences.
This jumper must only be left on the last board in cascade; all the others, including
the one on the boiler board, must be removed.
Each additional board with the dip switches
must be set in such a way as to associate it
to the zone to be controlled or to the solar
system.
Only the first two of the three dip switches are
used for the setting (the third one must be left
in the “down” position, i.e. OFF).
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K/>Z
KZ
ZONE2
ZONE3
ZONE4
SOLAR
MIXED ZONE2
MIXED ZONE3
MIXED ZONE4
COMPLEX SOLAR
