Honeywell RM7898 Microprocessor-Based Integrated Full Function Control
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Integrated full-function primary burner control. 4- or 10-second pilot flame establishing period. Selectable interlocks and pilot type. Pre-purge determined by ST7800A timer cards, Post-purge and valve proving features programmed through S7800A1142 keyboard display module | RM7898A1000 |
- Functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics, and troubleshooting
- Programmable post-purge, shutter drive output, airflow switch check
- Five LEDs provide sequence information. Power LED blinks fault code on safety shutdown.
- Selectable relight or lockout on loss of airflow or flame
- Local or remote annunciation of operation and fault information
- Valve proving feature tests valve seat integrity to detect a leak greater than 0.1% of burner input capacity