CIAT AirCompact Control, Руководство по управлению

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10
1.3.5
Electrical connections
Rx- Rx+
GND
L N
24VAC
The room terminal and the controller are electrically connected using an AWG20/22 shielded cable (not supplied by CIAT)
comprising two twisted pairs.
The first and last controller must be no more than
500m apart. This network must never run parallel to power cables at a distance
of less than 50 cm . These cables may cross, but perpendicularly. You are requested not to form a loop with the network cable or
the earth braid, and to properly separate the various cable families (control, power, earth and communication bus).
In case of transmission problems, it is vital to connect a 120Ω ¼W electrical resistor between terminals TX+ and TX- of the room
terminal, as indicated in the manual supplied with the room terminal.