• Functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics and troubleshooting.
• Access for external electrical voltage checks.
• Application flexibility and communication interface capability.
• Five LEDs provide sequence information.
• Five function Run/Test Switch.
• Interchangeable plug-in flame amplifiers.
• Local or remote annunciation of RM7840 operation and fault information.
• Nonvolatile memory retains history files and lockout status after loss of power.
• Compatible with existing Honeywell flame detectors.Automatic Programming Control| Overview | Microprocessor-based integrated burner control for automatically fired gas, oil, coal or combination fuel single burner applications. Provides safety, functional capability and features beyond conventional controls. |
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| Approvals, Federal Communications Commission | FCC Part 15, Class B, Emissions |
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| Application | Programming Control |
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| Flame Establishing Period - Pilot | 4 sec or 10 sec |
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| Approvals, Control Safety Devices | Acceptable: CSD-1 |
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| Flame Establishing Period - Main | 10 sec |
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| Approvals, Underwriters Laboratories Inc | Component Recognized, File No. MP268; Guide No. MCCZ. |
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| PrePurge | Determined by ST7800A Purge Timer Card |
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| Approvals, Canadian Standards Association | Certified, File No. LR95329-3. |
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| 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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| Voltage | 120 Vac (+10, -15%) |
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| AirFlow Check | User selectable |
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| Vibration | 0.5 G environment |
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| Ambient Temperature Range (F) | -40 F to +140 F |
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| Ambient Temperature Range (C) | -40 C to +60 C |
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| Dimensions (in.) | 5 in. wide x 5 in. high x 5 1/4 in. deep with Q7800A Subbase x 6 3/32 in. deep with Q7800B Subbase |
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| Dimensions (mm) | 127 mm wide x 127 mm high x 133 mm deep with Q7800A Subbase x 155 mm deep with Q7800B Subbase |
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| Approvals, Swiss RE (formerly IRI) | Acceptable |
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| Approvals, Factory Mutual | Report No. 1V9AO.AF. |
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Product Family
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