The Honeywell EC7850 (230VAC) or RM7850 (120VAC) relay module is a microprocessor-based integrated burner automaton for automatically fired gas burners with modulating control. Base, amplifier and purge card (pre-purge time) are required to complete the system and are selected according to the desired process conditions. The optional display can be mounted on the relay module or on the front of a panel door. The display can also be mounted remotely from the panel if approved for the application. Basic functions of the EC/RM7850 include automatic burner sequencing, flame monitoring, system status indication, system or self-diagnosis, and troubleshooting.

Features and Benefits:
 

• Interchangeable plug-in flame amplifiers i.f. desired process parameters
• Preservation of history files and sequence status after power failure
• Ignition attempts: 1 or 5 (selection by model number)
• Remote reset
• Display module remotely mountable
• Following burner control data available on (optional) display module:
  • Flame signal strength
  • Lockout/alarm status
  • Sequence Status
  • Total number of duty cycles
  • Total operating hours
  • Failure history with the six most recent failures
  • Diagnostic information (flame amplifier type, flame failure response time, on/off status of all digital inputs and outputs, selected pre-purge time, status of configuration sweaters, ...)

Documentation: