Description
RM7895C1012 On-Off Primary Control
Prepurge, Interrupted Pilot, 120 Vac, Shutter Drive Output, Valve Proving, Blinking LED Fault Annunciation
The RM7895C1012 is a microprocessor-based On-Off primary burner control designed for automatically or semi-automatically fired single burner systems using gas, oil, coal, or combination fuels. It supports prepurge, shutter drive output, and includes a valve proving feature, delivering advanced burner sequencing and safety diagnostics in demanding industrial applications.
Key Features
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Integrated prepurge function ensures combustion chamber safety prior to ignition
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Interrupted pilot with flame establishing time of 4 or 10 seconds
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Main burner flame establishing period: 10 seconds
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Delayed main valve feature for improved burner sequencing
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Valve proving support when used with S7800A1142 display (not included)
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Shutter drive output compatible with mechanical air dampers
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Automatic burner sequencing and flame supervision
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Diagnostic LEDs provide live system status and fault codes
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Interchangeable plug-in flame amplifiers allow flexible flame detection
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Nonvolatile memory retains lockout and operational data after power loss
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Optional keyboard display, PC interface, remote annunciation, and reset
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Selectable relight or lockout on flame loss
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Supports airflow switch check to ensure proper combustion airflow
Technical Specifications
| Specification | Value |
|---|---|
| Application | On-Off Primary Control with Prepurge |
| Voltage | 120 Vac |
| Pilot Type | Interrupted |
| Prepurge | Determined by ST7800A Purge Timer Card |
| Main Flame Establishing Time | 10 seconds |
| Pilot Flame Establishing Time | 4 or 10 seconds |
| Delayed Main Valve | Yes |
| Valve Proving | Yes (with S7800A1142) |
| Shutter Drive Output | Yes |
| Interlocks | Selectable |
| LED Indicators | 5 status/fault LEDs |
| Memory | Nonvolatile |
| Reset Options | Optional Remote or Local |
Required Components
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Wiring Subbase: Q7800A or Q7800B
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Flame 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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Semi-automatic industrial burners using gas, oil, or coal
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Systems requiring prepurge and delayed main valve operation
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Burner systems with airflow verification and shutter damper control
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Applications needing enhanced diagnostic capabilities and valve proving
