Description
RM7897C1000 On-Off Primary Control
Integrated Burner Control with Programmable Post Purge and Delayed Main Valve, 120 Vac
The RM7897C1000 is a microprocessor-based On-Off primary burner control for use in gas, oil, or combination fuel single burner applications. Designed for high-reliability safety sequencing, it includes programmable post purge, delayed main valve, and blinking LED fault annunciation. Post purge parameters are configurable using the optional S7800A1142 Keyboard Display Module.
Key Features
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Automatic burner sequencing and flame supervision
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Programmable post purge (via optional S7800A1142 display)
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Blinking LED displays fault codes during safety shutdown
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Interchangeable plug-in flame amplifiers
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Selectable recycle or lockout on airflow or flame loss
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Supports delayed main valve operation
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Local and remote annunciation options
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Retains system history with nonvolatile memory
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Shutter drive output and airflow switch check
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Compatible with expanded annunciators and system diagnostics software
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Optional PC interface and report generation
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Vibration tested: 0.5 G environment
Technical Specifications
| Specification | Value |
|---|---|
| Application | On-Off Primary Control |
| Voltage | 120 Vac |
| Flame Establishing Period | 4 or 10 seconds (pilot) |
| Interlocks | Selectable |
| Prepurge | Determined by ST7800A Purge Timer Card |
| Postpurge | Programmable via S7800A1142 |
| Delayed Main Valve | Yes |
| Pilot Type | Selectable |
| Vibration Rating | 0.5 G |
| Memory | Nonvolatile |
| Reset Options | Local or optional remote |
| LED Indicators | 5 sequence LEDs, blinking fault code |
| Mounting | On Q7800A/B Subbase (required) |
Required Components
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Subbase: Q7800A or Q7800B Universal Wiring Subbase
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Amplifier: R7847, R7848, R7849, R7851, R7852, R7861, or R7886
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Purge Timer: ST7800A Plug-in Purge Timer Card
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Display (optional): S7800A1142 for post purge setup
Common Applications
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Commercial and industrial burner systems
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Boilers, process heating systems
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Safety-focused On-Off ignition systems requiring post purge and main valve delay