{"product_id":"honeywell-rm7895c1012-burner-control-unit","title":"Honeywell RM7895C1012 Burner Control Unit","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell RM7895C1012\u003c\/strong\u003e serves as the primary \u003cstrong\u003eRM7895C1012\u003c\/strong\u003e Burner Control Unit utilized to execute safety sequence timing and dynamic flame monitoring across 7800 SERIES combustion platforms. It mounts directly to a wiring subbase to supervise pre-purge timing, interrupted pilot ignition, delayed main fuel valve energization, and safety interlock circuit status during burner operation.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRM7895C1012\u003c\/strong\u003e: Standard production model featuring nonvolatile memory, interrupted pilot functionality, delayed main valve logic, and selectable pilot flame establishing period.\u003c\/li\u003e\n\u003c\/ul\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\u003eRM7895C1012\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\u003e2.12 lbs (0.96 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 Q7800 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\u003eMemory Type\u003c\/td\u003e\n\u003ctd\u003eNonvolatile Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Flame Establishing Period\u003c\/td\u003e\n\u003ctd\u003e10 s\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\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 module provides robust channel-to-channel isolation between internal microprocessor circuits, low-voltage flame signal sensor inputs, and line-voltage output contacts. Signal parameters, lockouts, sequence states, and flame voltage telemetry pass over the integrated ControlBus serial interface to plant DCS networks or supervisory automation systems without introducing signal degradation or loop interference.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the primary benefit of the nonvolatile memory built into the RM7895C1012?\u003c\/p\u003e\n\u003cp\u003eA: Nonvolatile memory retains all critical lockout history, operating status, and system parameters even after total loss of main input supply power.\u003c\/p\u003e\n\u003cp\u003eQ: Can the RM7895C1012 relay module operate without an external plug-in purge card?\u003c\/p\u003e\n\u003cp\u003eA: No, the unit requires an ST7800 plug-in purge timer card, a compatible flame signal amplifier, and a Q7800 subbase for proper functional operation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off main line power supplied to the Q7800 subbase prior to installing or removing the module.\u003c\/li\u003e\n\u003cli\u003eCheck subbase terminal connections to confirm compliance with 120 VAC power and output load ratings.\u003c\/li\u003e\n\u003cli\u003eAlign rear card-edge connectors carefully into the subbase receptacle and press straight until seated, securing all captive retaining screws.\u003c\/li\u003e\n\u003cli\u003eSeparate low-voltage flame detector cables and ControlBus communication lines from high-voltage ignition leads by a minimum distance of 150 mm.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45396606484595,"sku":"RM7895C1012","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/S7800A1001_2042f790-2052-4c85-8e01-fe4ffee8572e.png?v=1787623913","url":"https:\/\/www.dcssupplier.com\/products\/honeywell-rm7895c1012-burner-control-unit","provider":"DcsSupplier Limited","version":"1.0","type":"link"}