RM7840G1014 Honeywell 7800 Series Relay Module 120V Burner Control

Product Overview

• The Honeywell RM7840G1014 is a microprocessor-based integrated burner control.
• It provides automatic burner sequencing and flame monitoring for industrial systems.
• This 7800 Series module handles atmospheric and power burners.
• It uses a Relay Module design for high-pressure or low-pressure gas.
• The RM7840G1014 ensures safe light-off through the LHL-LF sequence.
• Engineers can monitor system status via the optional keyboard display module.

Technical Specifications

• Brand: Honeywell
• Model: RM7840G1014
• Series: 7800 Series Burner Program Control
• Voltage: 120 Vac (+10, -15%)
• Frequency: 50 Hz or 60 Hz (±10%)
• Flame Establishing Period (Pilot): Selectable 4 sec or 10 sec
• Flame Establishing Period (Main): 10, 15, or 30 seconds
• Post-Purge Duration: Fixed at 15 seconds
• Pre-Purge Timing: Determined by ST7800A Purge Timer Card
• Pilot Type: Interrupted Pilot sequence
• Vibration Resistance: 0.5 G environment durability
• Temperature Range: -40°F to +140°F (-40°C to +60°C)
• EMC Compliance: FCC Part 15 Class B emissions
• Interlocks: Running interlock circuit integrated

Diagnostic Capabilities

• Fault History: Stores the last five fault codes internally.
• Self-Diagnostics: Continuous internal logic checking during every cycle.
• Dynamic Monitoring: Provides real-time flame signal strength via test jacks.
• Safety Lockout: Shuts down system upon flame failure or air loss.

Compatibility and Installation

• Required Wiring Subbase: Compatible with Q7800A or Q7800B.
• Flame Signal Amplifiers: Supports R7847, R7848, R7849, R7851, R7852, R7861, R7886.
• Purge Timer: Requires ST7800A Plug-in Card for specific timing.
• Mounting: Installs directly onto the Q7800 universal subbase.
• Maintenance: Plug-in design reduces downtime during field replacement.

Shipping and Warranty

• Warranty: Includes a 12-month quality guarantee.
• Packing List: One RM7840G1014 module and installation guide.
• Logistics: Global express shipping via Fedex, UPS, or DHL.
• Technical Inquiries: info@oiltechcontrols.com
• Instant Support: WhatsApp: +86 158 8020 0923

FAQ

• Does this include the subbase? No, you must order the subbase separately.
• Can I change the purge time? Yes, swap the ST7800A timer card.
• Is it compatible with 220V? No, this specific model requires 120V.

Please follow the links below to access more technical documentation:

• Download the official Honeywell 7800 Series technical manual
• Access the RM7840G1014 wiring diagram and installation guide

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