{"product_id":"honeywell-rm7898a1000-burner-control-relay-module","title":"Honeywell RM7898A1000 Burner Control Relay Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell RM7898A1000\u003c\/strong\u003e serves as the primary \u003cstrong\u003eRM7898A1000\u003c\/strong\u003e Burner Control Unit utilized to execute dynamic safety sequencing and flame monitoring across 7800 SERIES combustion platforms. It mounts to a standard wiring subbase to manage pre-ignition interlocks, selectable pilot configuration, automatic sequence timing, and safety shutoff circuit operation during industrial burner startup and continuous firing cycles.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRM7898A1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA \/ Mexico\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.30 lbs (1.04 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e127 mm x 127 mm x 133 mm (with Q7800A subbase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e10 W nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC (+10%, -15%), 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePilot Flame Establishing Period\u003c\/td\u003e\n\u003ctd\u003eSelectable 4 s or 10 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Function\u003c\/td\u003e\n\u003ctd\u003eAutomated Burner Sequencing and Flame Safety Supervision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control and DCS Interface Features\u003c\/h3\u003e\n\u003cp\u003eThe unit relies on high-integrity internal relay logic combined with channel-to-channel isolation between low-voltage sensor circuits and line-voltage control outputs. Integrated ControlBus communication interfaces allow sequence timing, flame signal metrics, and diagnostic fault history to be monitored by plant DCS architectures or supervisory Honeywell Process Manager networks without imposing electrical load on safety critical interlock channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the primary functional difference between the RM7898A1000 and the RM7898A1018 model?\u003c\/p\u003e\n\u003cp\u003eA: The RM7898A1000 provides baseline safety sequencing without an internal Valve Proving System (VPS), whereas the RM7898A1018 includes automated VPS safety testing capabilities.\u003c\/p\u003e\n\u003cp\u003eQ: Is a purge card required to operate the RM7898A1000 relay module?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the RM7898A1000 requires a ST7800 plug-in purge timer card, a flame signal amplifier module, and a compatible Q7800 subbase to enable full sequencing logic.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure main power feeds are isolated and locked out before seating the module into the Q7800 subbase.\u003c\/li\u003e\n\u003cli\u003eAlign the rear terminal header precisely with the subbase socket to avoid pin deformation upon insertion.\u003c\/li\u003e\n\u003cli\u003eTighten the central captive retaining screws securely to prevent connection looseness caused by thermal cycling or industrial vibration.\u003c\/li\u003e\n\u003cli\u003eMaintain a minimum clearance of 150 mm between high-voltage ignition lead conduits and low-voltage flame signal cable pathways.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45396605239411,"sku":"RM7898A1000","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/RM7890A1056_16800cd1-31b3-4709-badc-479687c1ca13.png?v=1787623999","url":"https:\/\/www.dcssupplier.com\/ar\/products\/honeywell-rm7898a1000-burner-control-relay-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}