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4. Installation
4.1. Physical connection between the Procon A1M and M-, S-, and P-Series
indoor units
The Procon A1M has a 1 metre flying lead to connect directly into the CN105/CN92 connector on the indoor unit
controller PCB. As an example, Figure 2 shows this connection on a Mr Slim indoor unit.
4.2. Power supply
The Procon A1M is powered from the CN105/CN92 connector and hence does not require an external power supply.
4.3. Modbus connections
The Procon A1M has a 3-way screw terminal to provide Modbus RTU communication via RS-485. Figure 1 shows the
RS-485 connections. The Modbus section contains further detail of the Modbus communications.
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