Description
The Honeywell RM7890A1056 is a microprocessor‑based primary burner control designed for automatic operation of single‑burner gas, oil, or combination fuel systems. It’s engineered for enhanced safety, diagnostics, and flexibility, surpassing traditional analog or relay‑type hangers. Its fixed pilot flame establishing period, selectable between 4 or 10 seconds, provides adaptability for various pilot flame types while maintaining a consistent ignition sequence.
Features:
- Functions include automatic burner sequencing, flame supervision, system status indication, system or self diagnostics and troubleshooting.
- Subbase and amplifier are required for operation.
- Options include PC interface, keyboard display module, DATA CONTROLBUS MODULE, remote display module, first-out expanded annunciator, and COMBUSTION SYSTEM MANAGER software.
- Five LEDs provide sequence information.
- Interchangeable plug-in flame amplifiers.
- Optional local or remote annunciation of operation and fault information.
- Nonvolatile memory retains history files and sequencing status after power loss.
- Optional remote reset capability.
- Optional report generation.
- Selectable relight or lockout on loss of flame.
- Flame Establishing Period – Pilot: 4 sec or 10 sec
- Flame Establishing Period – Main: Intermittent
