{"product_id":"honeywell-rm7800l1038-relay-module","title":"Honeywell RM7800L1038 Relay Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell RM7800L1038\u003c\/strong\u003e , also cataloged as the \u003cstrong\u003eRM7800L1038\u003c\/strong\u003e Relay Module, operates as a dedicated hardware component for automatic burner sequencing, safety timing, and flame monitoring execution within 7800 Series flame safeguard systems.\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\u003eRM7800L1038\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\u003e3.07 lbs (approx. 1.39 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 7800 Series Module Footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating 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\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003eKeyboard Display Module (KDM) Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterlock Sequence\u003c\/td\u003e\n\u003ctd\u003ePre-ignition interlock, High \u0026amp; Low fire switch tracking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; Network Protocol Execution\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell RM7800L1038 relay module executes microcomputer-based burner control sequences while maintaining channel-to-channel isolation across internal input monitoring circuits. The unit processes status feedback from high\/low fire switches, pre-ignition interlocks, and flame sensors, delivering real-time telemetry and fault diagnostic logging to the front-mounted Keyboard Display Module (KDM). Integrated optocoupled safety pathways ensure immediate safety shutdown output upon detection of a flame failure or interlock opening.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What power input parameters are required to operate the RM7800L1038 relay unit? A: The module requires a nominal line supply of 120 VAC (+10\/-15%) at 50\/60 Hz and consumes a maximum of 10 W.\u003c\/p\u003e\n\u003cp\u003eQ: How are diagnostic states and operating messages presented to field operators? A: Diagnostics, sequence timing status, and lockout history files are rendered directly through the front-mounted Keyboard Display Module (KDM) interface.\u003c\/p\u003e\n\u003cp\u003eQ: Does the RM7800L1038 support automatic lockout under unsafe operating conditions? A: Yes, the microcomputer logic executes an immediate safety lockout upon loss of flame signal or violation of any pre-ignition or running safety interlock.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Lockout\u003c\/strong\u003e : Isolate and verify de-energization of the 120 VAC power feed to the wiring subbase before inserting or servicing the relay module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubbase Fastening\u003c\/strong\u003e : Ensure the universal wiring subbase is securely bolted to the panel interior, maintaining proper grounding contact against the metallic backplate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Mounting\u003c\/strong\u003e : Align the rear terminal header of the RM7800L1038 with the subbase socket and press firmly until side retaining catches engage fully.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Separation\u003c\/strong\u003e : Route low-voltage sensor lines and flame detector leads in separate grounded metallic conduits away from high-voltage ignition transformer wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarth Grounding\u003c\/strong\u003e : Connect the panel ground bus bar directly to the subbase earth terminal using heavy-gauge copper wire to mitigate electromagnetic interference (EMI).\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45455224143987,"sku":"RM7800L1038","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/RM7890B1014_06b45b4b-c950-4c77-9140-49150c879a27.png?v=1788747181","url":"https:\/\/www.dcssupplier.com\/ar\/products\/honeywell-rm7800l1038-relay-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}