{"product_id":"rm7897c1000-honeywell-7800-series-burner-control-module-with-programmable-post-purge-120-vac","title":"RM7897C1000 | Honeywell 7800 Series Burner Control Module with Programmable Post-Purge 120 VAC","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003eThe Honeywell RM7897C1000 is a microprocessor-based primary burner control module designed for automatically fired single-burner applications using gas, oil, or combination fuels. Operating on 120 VAC, 50\/60 Hz, it provides complete control sequencing, flame supervision, diagnostics, and safety shutdown. The module supports programmable post-purge timing, delayed main valve operation, and selectable pilot type for flexible system configurations.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 646.595px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eHVAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eRM7897C1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eBurner Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003e7800 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eMicroprocessor Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003e120 VAC ± 10 %, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eOn-Off Primary Control with Pre- and Post-Purge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 39.1875px;\"\u003e\u003cstrong\u003eFlame Establishing Period\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 39.1875px;\"\u003e4 s or 10 s (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 39.1875px;\"\u003e\u003cstrong\u003eMain Flame Establishing Period\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 39.1875px;\"\u003e10 s \/ 15 s typical (based on configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003ePilot Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eSelectable (interrupted \/ intermittent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003ePre-Purge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eDetermined by ST7800A Purge Timer Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003ePost-Purge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eProgrammable using S7800A1142 KDM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eDelayed Main Valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eInterlocks\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eSelectable airflow and safety interlocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eMemory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eNonvolatile; retains fault and history logs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 39.1875px;\"\u003e\u003cstrong\u003eDiagnostic Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 39.1875px;\"\u003eLocal\/remote annunciation, optional Modbus or Data ControlBus™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eLED Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003e5 LEDs (Power, Sequence, Fault, Flame, Lockout)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eRun\/Test Switch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003e5-position for setup and commissioning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 39.1875px;\"\u003e\u003cstrong\u003eFlame Amplifier Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 39.1875px;\"\u003ePlug-in amplifiers (rectification, UV, IR types)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003e–40 °F to +140 °F (–40 °C to +60 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eVibration Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003e0.5 G environment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eEnclosure Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eEnclosed, dust-protected relay module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 39.1875px;\"\u003e\u003cstrong\u003eDimensions (L × W × H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 39.1875px;\"\u003e7.25 in × 7.0 in × 5.5 in (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003e2.67 lb (1.21 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 32.819%; height: 19.5938px;\"\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 63.8683%; height: 19.5938px;\"\u003eUL Listed, CSA Certified, CE Compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eRM7897C1000\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe RM7897C1000 belongs to Honeywell’s 7800 Series of relay modules, engineered for full-function primary burner management. It coordinates the pre-purge, ignition, flame establishing, main flame proving, and post-purge stages, ensuring safe burner operation. This model features a delayed main valve and a programmable post-purge function, configurable using the S7800A1142 Keyboard Display Module (KDM). Equipped with a nonvolatile memory, the RM7897C1000 stores event history and lockout information for post-failure analysis. It also offers fault annunciation through five sequence LEDs and a blinking fault indicator, while interchangeable plug-in amplifiers allow flexibility with various Honeywell flame detectors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAutomatic Burner Sequencing: Manages pre-purge, pilot ignition, main flame proving, and shutdown cycles automatically.\u003c\/li\u003e\n\u003cli\u003eProgrammable Post-Purge: Post-purge timing adjustable using the S7800A1142 KDM for optimal heat-exchanger cooling and safety.\u003c\/li\u003e\n\u003cli\u003eDelayed Main Valve Feature: Adds a controlled delay between pilot and main valve opening to ensure stable ignition.\u003c\/li\u003e\n\u003cli\u003eSelectable Flame Establishing Period: Configurable 4-second or 10-second pilot flame establishment to match system requirements.\u003c\/li\u003e\n\u003cli\u003eAdvanced Diagnostics: Integrated system and self-diagnostics with LED fault codes simplify troubleshooting and maintenance.\u003c\/li\u003e\n\u003cli\u003eInterchangeable Plug-In Amplifiers: Compatible with multiple Honeywell flame sensors (UV, IR, or rectification) for detection flexibility.\u003c\/li\u003e\n\u003cli\u003eLED Status Indicators: Five LEDs provide visual feedback for sequence steps, system power, and fault conditions.\u003c\/li\u003e\n\u003cli\u003eNonvolatile Memory: Retains operational history and lockout data after power loss for reliable maintenance records.\u003c\/li\u003e\n\u003cli\u003eFlexible Interlock Options: Selectable interlock supervision for airflow, fuel valves, and ignition safety.\u003c\/li\u003e\n\u003cli\u003eOptional Communication Interface: Supports PC connection, Modbus integration, and Data ControlBus™ for advanced monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe RM7897C1000 delivers the control precision, safety integrity, and configuration flexibility essential for industrial and commercial combustion systems.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105128259840,"sku":"RM7897C1000","price":1977.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/44d45139e17245a781d18025420778bb.jpg?v=1785540907","url":"https:\/\/alotechparts.com\/products\/rm7897c1000-honeywell-7800-series-burner-control-module-with-programmable-post-purge-120-vac","provider":"Alo Tech Solutions","version":"1.0","type":"link"}