The Honeywell RM7897A1002, a Microprocessor-based Automatic Primary Control, suits single burner applications with gas, oil, or combination fuel. Operating at 120Vac within a -40-140 degree ambient temperature range, it provides selectable recycle or lockout on airflow or flame loss, and includes a Shutter Drive Output (RM7897A1002). The post-purge feature requires an S7800A1142 Display.
Beyond conventional controls, it offers enhanced safety and functionality. Use the RM/EC7800 2000 Series with subbases Q7800A2005/U, Q7800B2003/U, Q7800B2011/U. Functions encompass automatic burner sequencing, flame supervision, diagnostics, and external electrical voltage checks. Enjoy application flexibility with a 5-LED sequence display, a 5-function Run/Test switch, interchangeable plug-in flame amplifiers, and optional local or remote annunciation of RM7840 operation and faults.
Program post-purge with the S7800A1142 Keyboard Display (not provided). Nonvolatile memory retains history and lockout status, compatible with existing Honeywell flame detectors. Additional features include a dust cover and AirFlow switch check option.
- Flame Establishing Period – Pilot, 4 sec or 10 sec
- Flame Establishing Period – Main, 10 sec or 15 sec
- Early Spark Termination – Yes, 5 sec
- Required Components: Q7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal
- Amplifier. ST7800A Plug-in Purge Timer Card.
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