RM7840G1022 Honeywell Controller
$2,800.00
RM7840G1022 Honeywell Microprocessor Based Integrated Burner Control for Automatically Fired Gas, Oil, Coal or Combination Fuel Single Burner Applications, 120Vac, 10 Second, 15 Second, 30 Second or Intermittent Main Flame Establishing Period, 4 Second or 10 Second Pilot Flame Establishing Period, Selectable Second Stage Pilot Valve, Running Interlocks, Interuppted Pilot, 5 Second Early Spark Termination, User Selectable AirFlow Check, VPS LHL-LF Proven Purge
The Honeywell RM7840G1022 program controller for VPS LHL-LF Proven Purge. Integrated burner control for gas, oil, coal or combination fuel single burner uses. Provides safety, functional capability and features beyond normal controls. With Valve Proving Feature. RM7840 requires S7800A1142 Keyboard Display.; Microprocessor Based Integrated Burner Control for Automatically Fired Gas, Oil, Coal or Combination Fuel Single Burner Applications, 120Vac, 10 Second, 15 Second, 30 Second or Intermittent Main Flame Establishing Period, 4 Second or 10 Second Pilot Flame Establishing Period, Selectable Second Stage Pilot Valve, Running Interlocks, Interrupted Pilot, 5 Second Early Spark Termination, User Selectable Air Flow Check, VPS LHL-LF Proven Purge
Overview
The Honeywell RM7840G1022 is a microprocessor-based burner controller designed for ON/OFF industrial and commercial burner systems requiring Valve Proving System (VPS) functionality. Operating at 120 VAC, it provides complete burner sequencing, flame supervision, system diagnostics, and lockout protection.
Part of Honeywell’s RM7800 Series, this controller integrates advanced safety logic, non-volatile memory, and LED status indicators to ensure efficient and reliable burner management. The RM7840G1022 is compatible with Honeywell subbases, keyboard display modules, and purge timer cards.
Features
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ON/OFF burner controller with integrated Valve Proving System (VPS)
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Microprocessor logic for precise sequencing and flame safeguard
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Five LED indicators for status, sequence, and fault display
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Non-volatile memory retains lockout history after power loss
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Selectable pilot flame establishing periods (4 or 10 seconds)
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Selectable main flame establishing periods (10, 15, or 30 seconds)
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Early spark termination (5 seconds) for energy efficiency
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Plug-in, modular design for quick service and replacement
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Supports preignition checks and airflow switch verification
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Run/Test switch for commissioning and maintenance
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Compatible with multiple subbases and purge timer modules
Specifications
| Part Number | RM7840G1022 |
| Application | Programming Control w/VPS |
| 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 |
| Dimensions (mm) | 127 mm wide x 127 mm high x 133 mm deep with Q7800A Subbase x 155 mm deep with Q7800B Subbase |
| Weight (lb) | 1 lb 10 oz |
| Weight (kg) | 7 kg |
| Comments | Requires S7800A1142 Display, LHL-LF Proven |
| Frequency | 50 Hz; 60 Hz (±10%) |
| Approvals, Underwriters Laboratories Inc. | Component Recognized, File No. MP268; Guide No. MCCZ. |
| Voltage | 120 Vac (+10, -15%) |
| Shipping and Storage Temperature Range (F) | -40 F to +140 F |
| Shipping and Storage Temperature Range (C) | -40 C to +60 C |
| Approvals, Federal Communications Commission | FCC Part 15, Class B, Emissions. |
| Flame Establishing Period – Pilot | 4 sec or 10 sec |
| Flame Establishing Period – Main | 10 sec, 15 sec, 30 sec, or Intermittent |
| Interlocks | Running |
| Preignition | Yes |
| PrePurge | Determined by ST7800A Purge Timer Card |
| PostPurge | programmed with S7800A1142 display |
| 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. |
| AirFlow Check | User selectable |
| Second Stage Pilot Valve | selectable |
| Pilot Type | interrupted |
| Vibration | 5 G environment |
| Approvals, Factory Mutual | Report No. 1V9AO.AF. |
Applications
The RM7840G1022 Honeywell Controller is designed for a wide range of industrial and commercial burner applications requiring safety interlocks and reliable sequencing. Typical uses include:
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Industrial boilers and furnaces
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Process heaters and ovens
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Packaged burner assemblies
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Combustion systems requiring valve proving and flame safeguard control
It provides precise ignition sequencing, continuous flame monitoring, and automatic system shutdown during unsafe conditions.
Benefits
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Combines burner sequencing, flame safeguard, and valve proving in one unit
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Fast installation and replacement using Honeywell’s modular base design
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Built-in LEDs and non-volatile memory simplify troubleshooting
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Configurable flame timings to match application requirements
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Trusted reliability from Honeywell’s RM7800 series control family
| Weight | 4 lbs |
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| Dimensions | 9 × 9 × 9 in |
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