{"product_id":"honeywell-rm7840l1018-7800-series-relay-module","title":"Honeywell RM7840L1018 7800 Series Burner Control Relay Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Honeywell RM7840L1018 is a microprocessor-based burner control relay module engineered for advanced flame safeguard and burner sequencing in industrial combustion systems. As part of the Honeywell 7800 Series platform, this module provides integrated valve proving, flame monitoring, ignition control, and safety shutdown functions. It is designed to enhance operational safety by verifying fuel valve integrity prior to burner startup, effectively mitigating risks associated with fuel leakage. The module features a 5-second Early Spark Termination (EST) to optimize ignition sequences and reduce electrode wear, contributing to improved system reliability and component longevity.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIntegrated Valve Proving System (VPS) for pre-ignition fuel valve integrity verification.\u003c\/li\u003e\n\u003cli\u003e5-second Early Spark Termination (EST) to extend ignition component life.\u003c\/li\u003e\n\u003cli\u003eContinuous diagnostic monitoring with comprehensive fault history and lockout protection.\u003c\/li\u003e\n\u003cli\u003eProtective dust cover for enhanced durability in harsh industrial environments.\u003c\/li\u003e\n\u003cli\u003eFull compatibility with existing Honeywell 7800 Series subbases, display modules, and communication interfaces.\u003c\/li\u003e\n\u003cli\u003eDirect functional replacement for the RM7840L1042 model.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThe RM7840L1018 is suitable for a wide range of critical industrial combustion applications, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUtility and industrial boilers\u003c\/li\u003e\n\u003cli\u003eRefinery heaters and process furnaces\u003c\/li\u003e\n\u003cli\u003ePower generation facilities\u003c\/li\u003e\n\u003cli\u003ePetrochemical processing plants\u003c\/li\u003e\n\u003cli\u003eThermal oxidizers and thermal processing equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRM7840L1018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e7800 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eApprox. 12 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 66 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Technology\u003c\/td\u003e\n\u003ctd\u003eMicroprocessor-Based\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement Model\u003c\/td\u003e\n\u003ctd\u003eRM7840L1042\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the system power is completely disconnected before installing or removing the module from the subbase.\u003c\/li\u003e\n\u003cli\u003eMount the module onto a compatible Honeywell 7800 Series wiring subbase, ensuring a secure connection to the terminal blocks.\u003c\/li\u003e\n\u003cli\u003eHandle the module with care to prevent electrostatic discharge (ESD) damage to internal microelectronics.\u003c\/li\u003e\n\u003cli\u003eVerify that all wiring connections are tight and conform to local electrical codes and the specific burner system schematic.\u003c\/li\u003e\n\u003cli\u003eEnsure adequate ventilation around the control cabinet to maintain operating temperatures within the specified -40 to 66 deg C range.\u003c\/li\u003e\n\u003cli\u003ePerform a full system checkout and safety test after installation to confirm proper sequencing and flame detection functionality.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs the RM7840L1018 compatible with my existing 7800 Series subbase?\u003c\/h3\u003e\u003cp\u003eYes, the RM7840L1018 is designed for full compatibility with standard Honeywell 7800 Series wiring subbases, allowing for seamless integration into existing control panels.\u003c\/p\u003e\u003ch3\u003eWhat is the benefit of the Early Spark Termination feature?\u003c\/h3\u003e\u003cp\u003eThe 5-second Early Spark Termination automatically removes the ignition spark once a flame is successfully established. This reduces unnecessary wear on the ignition electrode and helps extend the service life of ignition components.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":50910078206204,"sku":"RM7840L1018","price":172.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_738e165a-7d92-43a8-9aa2-a9e600034c63.jpg?v=1785642222","url":"https:\/\/www.electronicplc.com\/ar\/products\/honeywell-rm7840l1018-7800-series-relay-module","provider":"Electronic PLC","version":"1.0","type":"link"}