BEMC stands for Building Energy Management Computer, which can be used to remotely monitor and control the EUR-5A controller.
These connections are made to pins 10 through 16. The following diagram will aid in making these connections.
The BEMC can use the override on and override off to turn the systems on and off and provides internal dry contacts for monitoring and alarms. For a complete description of how the BEMC works refer to the manual page 9.