Honeywell RM7840L1018 Full Burner Module

The Honeywell RM7840L1018 is a full burner module designed for reliable burner control in industrial applications. This module offers a comprehensive set of features for programming control, including preignition, post-purge, and flame supervision, ensuring optimal performance and safety.

Key Features of the Honeywell RM7840L1018

Microprocessor-Based Control: Provides precise and efficient burner management for gas, oil, or combination fuel systems.
Flame Supervision: Ensures reliable flame detection with automatic sequencing and flame establishment.
Preignition and Postpurge: Preignition functionality ensures safe operation, while postpurge completes the burner cycle after firing.
Advanced Safety Features: Lockout interlocks and early spark termination protect the system from malfunctioning.
Programmable Control: Customizable to meet specific needs using compatible display modules and timers.

Technical Specifications for Honeywell RM7840L1018

Parameter	Specification
Manufacturer	Honeywell
Model Number	RM7840L1018
Product Type	Full Burner Module
Voltage	120 VAC (+10, -15%)
Frequency	50 Hz; 60 Hz (±10%)
Dimensions	5 in. wide x 5 in. high x 5 1/4 in. deep with Q7800A Subbase
Dimensions (mm)	127 mm x 127 mm x 133 mm deep with Q7800A Subbase
Weight	1 lb 13 oz (0.8 kg)
Shipping and Storage Temperature	-40°F to +140°F (-40°C to +60°C)
Approvals	UL, CSA, FCC
Flame Establishing Period (Pilot)	4 sec or 10 sec
Flame Establishing Period (Main)	10 sec or 15 sec
Preignition	Yes
PrePurge	Determined by ST7800A Purge Timer Card
PostPurge	15 sec
Lockout	Yes, with interlocks
Early Spark Termination	Yes, 5 sec

Description

The Honeywell RM7840L1018 is designed to meet the stringent demands of industrial burner control systems. This full burner module integrates advanced programming control features, allowing seamless operation of single burner applications, whether they are powered by gas, oil, or a combination of both fuels.

With a preignition feature for safe burner ignition and a postpurge function that ensures a smooth shutdown cycle, the RM7840L1018 optimizes both burner safety and longevity. The flame establishing period for both pilot and main flame is customizable, offering enhanced control over the burner ignition sequence.

Safety is a top priority with lockout interlocks, early spark termination, and flame supervision. These features minimize the risk of failure and ensure that the system operates as expected, even in the most demanding environments.

Application and Benefits

Ideal for Burner Control: Designed specifically for on-off burner control with advanced flame supervision and system diagnostics.
Flexible Integration: Compatible with other Honeywell components such as the ST7800A Purge Timer Card for added functionality.
Safety and Reliability: Provides robust protection with lockout features and early spark termination for smooth operation.
Energy Efficiency: The prepurge and postpurge functions improve system efficiency, extending burner life and reducing energy consumption.
Easy Integration: The Honeywell RM7840L1018 is designed to integrate seamlessly with other systems, providing superior control and safety.

Conclusion

The Honeywell RM7840L1018 is a comprehensive solution for burner control. Its preignition, postpurge, and flame supervision features ensure both safety and reliability. Whether for gas, oil, or combination fuel burners, this module offers excellent performance and peace of mind.