Description
RM7896A1012 On-Off Primary Control
Pre & Post-Purge Burner Control with Intermittent Pilot, 120 Vac
The RM7896A1012 is a microprocessor-based On-Off primary burner control designed for automatically fired gas, oil, or combination fuel single-burner systems. It offers a high level of safety and advanced burner management functionality including intermittent pilot operation, 15-second postpurge, and diagnostic features.
Key Features
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Integrated burner sequencing with intermittent pilot
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Includes both pre-purge and 15-second post-purge functions
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Provides system status indication, diagnostics, and troubleshooting
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Interchangeable plug-in flame amplifiers for flexible flame detection
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Five LEDs provide real-time sequence and fault status
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Shutter drive output and airflow switch check for enhanced safety
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Optional PC interface, remote annunciation, and data logging
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Retains lockout history and system status after power loss (nonvolatile memory)
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Optional remote reset and report generation
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Selectable recycle or lockout mode on flame or airflow loss
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Delayed main valve feature improves start-up safety
Technical Specifications
| Specification | Value |
|---|---|
| Application | Primary Control |
| Voltage | 120 Vac |
| Pilot Type | Intermittent |
| Flame Establishing Time (Pilot) | 4 or 10 seconds |
| Flame Establishing Time (Main) | Intermittent |
| Prepurge | Determined by ST7800A Purge Timer Card |
| Postpurge | 15 seconds |
| Interlocks | Selectable |
| Shutter Drive Output | Yes |
| Airflow Switch Check | Yes |
| Memory | Nonvolatile |
| LED Indicators | 5 status/fault LEDs |
| Reset Options | Optional Local or Remote |
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
Common Applications
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Industrial and commercial burners requiring intermittent pilot control
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Systems with demand for enhanced purge and airflow verification
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Installations needing full diagnostics and annunciation options
