{"product_id":"honeywell-rm7840l1075-burner-control-relay-module","title":"Honeywell RM7840L1075 Burner Control Relay Module","description":"\u003cp\u003eThe Honeywell RM7840L1075 is a microprocessor-based integrated burner control relay module designed for industrial combustion applications. As part of the 7800 Series platform, this unit provides reliable sequencing, flame supervision, and safety interlock monitoring for gas, oil, or combination fuel burners. It is engineered to manage the entire combustion sequence, including purge, pilot ignition, main flame transition, and shutdown, ensuring deterministic operation in process heaters, boilers, and utility burners.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eProgrammable combustion sequencing with Valve Proofing System (VPS) support.\u003c\/li\u003e\n\u003cli\u003eInterrupted pilot ignition configuration for enhanced safety.\u003c\/li\u003e\n\u003cli\u003eSelectable airflow verification and second-stage pilot valve control.\u003c\/li\u003e\n\u003cli\u003eIntegrated 5-second early spark termination logic.\u003c\/li\u003e\n\u003cli\u003eComprehensive fault lockout and safety interlock supervision.\u003c\/li\u003e\n\u003cli\u003eDesigned for continuous industrial duty with robust dust-resistant housing.\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7800 Series subbases and plug-in flame amplifiers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is widely utilized in safety-critical combustion management systems, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIndustrial process furnaces and refinery heaters.\u003c\/li\u003e\n\u003cli\u003eCommercial and utility-scale boiler systems.\u003c\/li\u003e\n\u003cli\u003eCombustion trains requiring precise ignition and flame monitoring.\u003c\/li\u003e\n\u003cli\u003eMulti-stage burner architectures requiring flexible safety sequencing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRM7840L1075\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\u003eSupply 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\u003e6 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition Mode\u003c\/td\u003e\n\u003ctd\u003eInterrupted Pilot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.36 kg (approx. 3.00 lbs)\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 disconnected before installing or removing the module from the subbase.\u003c\/li\u003e\n\u003cli\u003eMount the module in a location protected from excessive vibration, moisture, and corrosive atmospheres.\u003c\/li\u003e\n\u003cli\u003eVerify that the subbase wiring matches the required configuration for the RM7840L1075 before applying power.\u003c\/li\u003e\n\u003cli\u003eEnsure proper grounding of the burner chassis to prevent EMI interference with flame detection signals.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the unit to facilitate airflow and heat dissipation.\u003c\/li\u003e\n\u003cli\u003eAlways perform a full safety checkout of the burner sequence after installation or maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the RM7840L1075?\u003c\/h3\u003e\u003cp\u003eThe RM7840L1075 acts as the central safety controller for industrial burners, managing the startup sequence, flame detection, and emergency shutdown protocols to prevent hazardous combustion conditions.\u003c\/p\u003e\u003ch3\u003eIs this module compatible with existing 7800 Series installations?\u003c\/h3\u003e\u003cp\u003eYes, the RM7840L1075 is designed as a plug-in replacement for the 7800 Series platform, utilizing standard Honeywell subbases and flame amplifier modules.\u003c\/p\u003e\u003ch3\u003eWhat does the 5-second early spark termination mean?\u003c\/h3\u003e\u003cp\u003eThis feature ensures that the ignition spark is de-energized 5 seconds after the pilot valve is opened, preventing unnecessary spark plug wear and reducing potential interference with flame detection systems.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":44664163729496,"sku":"RM7840L1075","price":172.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/wm_1_2d9c24aa-6a9c-4687-8df1-42fb40e97895.jpg?v=1787772036","url":"https:\/\/www.industriaxplc.com\/ar\/products\/honeywell-rm7840l1075-burner-control-relay-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}