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Communication and Sensor Connections/Terminals
E2 Setup • 21
7
E2 Setup
Connect the network cable to the three-terminal connector on the COM port that has been configured for the
thermostat. The thermostat polarity markings are the same as E2; connect the thermostat B+ wire to the E2
RS485 + terminal and connect the thermostat A- wire to the E2 RS485 - terminal. The shield cable should be
connected to the C terminal.
Figure 7-1
- E2 MODBUS connection