{"product_id":"honeywell-rm7865c1007-control-unit","title":"Honeywell RM7865C1007 Control Unit","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell RM7865C1007\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eRM7865C\u003c\/strong\u003e Relay Module, operates as a dedicated hardware component for flame safeguard sequencing and limit interlock logic execution within Honeywell 7800 Series platforms. Powered by a nominal supply of 120 VAC at 50\/60 Hz, this microprocessor-based burner control unit directly interfaces with system safety limit loops, main fuel valves, and pilot ignition circuits. It replaces legacy RM7865A1009 configurations, executing strict timing profiles across pre-purge, post-purge, and flame establishing 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\u003eRM7865C1007\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.57 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003ePlug-in module form factor for 7800 Series subbases\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 maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e120 VAC (+10%, -15%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz (+\/- 10%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePre-Purge \/ Post-Purge Period\u003c\/td\u003e\n\u003ctd\u003e35 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Flame Establishing Period\u003c\/td\u003e\n\u003ctd\u003e4 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePilot Flame Establishing Period\u003c\/td\u003e\n\u003ctd\u003e2 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Features\u003c\/td\u003e\n\u003ctd\u003eLockout Interlocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLegacy Replacement Target\u003c\/td\u003e\n\u003ctd\u003eReplaces RM7865A1009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; Channel Isolation Protocols\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell RM7865C1007 integrates high-integrity channel-to-channel isolation across its low-voltage sensor inputs and line-voltage output drivers to isolate system noise from external DCS and PLC architectures. Designed to monitor flame signal integrity continuously, the module interfaces with optical, UV, or flame rod sensors while routing isolated status feedback to local communication networks. Dynamic safety checking circuits enforce galvanic separation between low-voltage microcontrollers and the 120 VAC safety shut-off valve outputs, guaranteeing deterministic fault response and immediate valve closure upon loss of flame signal or safety interlock trip.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the RM7865C1007 module be hot-swapped onto an active wiring subbase?\u003c\/p\u003e\n\u003cp\u003eA: No. Power to the 120 VAC subbase must be de-energized prior to installing or removing the RM7865C1007 module. Hot-swapping can damage internal plug contacts, generate electrical arcs, or trigger accidental output relay state transitions.\u003c\/p\u003e\n\u003cp\u003eQ: Is the RM7865C1007 directly pin-compatible with installations running the legacy RM7865A1009?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The RM7865C1007 serves as a direct form, fit, and functional replacement for the RM7865A1009, maintaining identical terminal assignments on standard 7800 Series subbases while upgrading internal relay sequence logic.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the wiring subbase inside an NEMA-rated enclosure in a vertical position to provide proper convection airflow for internal component heat dissipation.\u003c\/li\u003e\n\u003cli\u003eEnsure all incoming line and sensor conductors comply with applicable electrical codes. Run high-voltage ignition leads in separate grounded metallic conduits from low-voltage flame signal leads, maintaining a minimum 5-thread engagement on all NPT conduit connections.\u003c\/li\u003e\n\u003cli\u003eAlign the RM7865C1007 housing guide pins with the subbase socket before applying pressure. Fully seat the module into the subbase and tighten the captive retention screws to ensure proper ground integrity and low-resistance backplane contact before restoring 120 VAC power.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45414752125043,"sku":"RM7865C1007","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/RM7898A1000_e539bf87-e183-48f2-a4fc-e2581325a9e4.png?v=1787898530","url":"https:\/\/www.dcssupplier.com\/products\/honeywell-rm7865c1007-control-unit","provider":"DcsSupplier Limited","version":"1.0","type":"link"}