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.
EUR-5A Building Automation 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.