Honeywell RM7850A1027 Burner Control Relay Module – RM7850 Series
When a burner management relay module fails on an industrial boiler, furnace, or process heater, the consequences are immediate and severe: uncontrolled fuel flow, flame failure lockout, unplanned production shutdown, and in worst cases, catastrophic combustion events. The Honeywell RM7850A1027 is the critical safety brain that prevents these scenarios — continuously monitoring ignition sequences, flame presence, and purge cycles to ensure every combustion event is safe, compliant, and repeatable.
Within the RM7850 relay module family, the RM7850A1027 variant is specified for 120V AC / 50–60 Hz power supply with a 30-second post-purge cycle — a configuration demanded by industrial burner OEMs and plant engineers across North America, Southeast Asia, and the Middle East. As part of Honeywell’s proven Flame-Monitor™ platform, this module is recognized globally as a benchmark for combustion safety reliability in demanding industrial environments.
Technical Specifications
- Model Number: RM7850A1027
- Brand: Honeywell
- Series: RM7850 Relay Module (Flame-Monitor™)
- Supply Voltage: 120V AC
- Frequency: 50/60 Hz
- Post-Purge Duration: 30 seconds
- Product Type: Burner Management / Combustion Safety Control Module
- Weight: 350 g (approx.)
- Compliance: UL Listed, CE Marked, FM Approved (verify current certifications with datasheet)
Key Features & Benefits
- Integrated 30-Second Post-Purge: Automatically purges residual combustible gases after burner shutdown, eliminating re-ignition risk and meeting NFPA 85 / EN 746-2 safety requirements.
- 120V Universal Compatibility: Designed for standard North American and international 120V industrial power infrastructure — no step-down transformer required.
- Flame-Monitor™ Platform: Honeywell’s field-proven architecture with self-diagnostics, lockout memory, and manual reset for traceable safety events.
- Plug-In Relay Design: Tool-free replacement on compatible Honeywell bases — minimizes downtime during maintenance or emergency swap-out.
- Wide Flame Detector Compatibility: Works with UV, IR, and UV/IR flame detectors across the Honeywell ecosystem.
- Fail-Safe Logic: De-energize-to-trip design ensures safe shutdown on any power or signal loss.
Industry & Equipment Applications
- Industrial Boilers: Fire-tube and water-tube boilers in power generation, chemical plants, and refineries.
- Process Furnaces & Ovens: Continuous and batch furnaces in steel, glass, ceramics, and heat treatment industries.
- Burner Management Systems (BMS): Standalone and integrated BMS panels for multi-burner process heaters.
- Commercial HVAC Heating: Large-scale commercial boiler rooms and district heating systems.
- Marine & Offshore: Shipboard boilers and offshore platform heating systems requiring certified combustion safety.
- Food & Beverage Processing: Steam generation and thermal processing equipment with strict safety compliance requirements.
System Integration & Compatible Parts
The RM7850A1027 is designed to integrate within the broader Honeywell combustion control ecosystem. Commonly paired components include:
- Mounting Base: Honeywell Q7800A / Q7800B relay module base
- Flame Detectors: Honeywell C7027, C7035, C7044 UV/IR detectors
- Amplifiers: Honeywell R7847, R7849, R7861 amplifier modules
- Display Modules: Honeywell S7800A1001 keyboard display module
- Wiring Subbase: Honeywell Q7800A1005 / Q7800B1003
Contact Konmask.com for full BOM support and cross-reference assistance.
Our Quality Assurance Process
- Authentic Sourcing: All Honeywell modules are sourced from authorized distributors and verified OEM supply chains — no grey-market or counterfeit risk.
- Pre-Shipment Inspection: Each unit undergoes visual inspection, label verification, and packaging integrity check before dispatch.
- Traceability: Lot codes and date codes are recorded and available upon request for quality-critical procurement.
- Warranty: Manufacturer warranty applies; Konmask.com provides 12-month DOA replacement guarantee.
How to Order
- Submit your inquiry via the Contact / RFQ form on this page.
- Provide your required quantity, delivery timeline, and destination country.
- Our team responds within 24 business hours with availability confirmation and a formal quotation.
- Orders are processed with full export documentation (commercial invoice, packing list, COO) for smooth customs clearance.
Why Choose Konmask.com?
- ✅ Industrial Automation Specialists — 10+ years sourcing PLC, DCS, and combustion control components globally.
- ✅ B2B Export Expertise — experienced in EXW, FOB, CIF shipping terms with full export documentation.
- ✅ Fast Response — dedicated account managers for urgent MRO and project procurement needs.
- ✅ Competitive Pricing — direct relationships with authorized distributors ensure best-in-class pricing.
- ✅ Global Reach — serving clients in 40+ countries across Asia, Middle East, Europe, and the Americas.
Frequently Asked Questions
Q: What is the difference between RM7850A1027 and other RM7850 variants?
A: The RM7850A1027 is specifically configured for 120V AC / 50–60 Hz with a 30-second post-purge. Other variants may differ in voltage (e.g., 240V), pre-purge timing, or amplifier compatibility. Always verify the full part number before ordering.
Q: Can the RM7850A1027 replace an older Honeywell R7850 or R4795 module?
A: Direct replacement depends on the base wiring and amplifier configuration. Contact our technical team with your existing part number and we will confirm compatibility.
Q: Do you provide a Certificate of Origin (COO) for customs?
A: Yes. Full export documentation including COO, commercial invoice, and packing list is provided with every shipment.
Q: What is the lead time for the RM7850A1027?
A: Lead time varies by stock availability. Submit an RFQ and we will confirm within 24 business hours.
Q: Is this product CE and UL certified?
A: Honeywell RM7850 series modules carry UL Listing and CE Marking. Please request the current datasheet for the latest certification status.
{
“@context”: “https://schema.org/”,
“@type”: “Product”,
“name”: “Honeywell RM7850A1027 Burner Control Relay Module”,
“description”: “Honeywell RM7850A1027 – 120V 50/60Hz burner control relay module with 30-second post-purge. Industrial combustion safety control for boilers, furnaces, and burner management systems.”,
“sku”: “RM7850A1027”,
“brand”: {
“@type”: “Brand”,
“name”: “Honeywell”
},
“manufacturer”: {
“@type”: “Organization”,
“name”: “Honeywell International Inc.”
},
“category”: “Burner Management System / Combustion Safety Control”,
“url”: “https://konmask.com/products/honeywell-rm7850a1027-burner-control-relay-module-rm7850-series”,
“image”: “https://cdn.shopify.com/s/files/1/0740/1111/5686/files/zzzwvt24f1k172457.jpg”,
“offers”: {
“@type”: “Offer”,
“url”: “https://konmask.com/products/honeywell-rm7850a1027-burner-control-relay-module-rm7850-series”,
“priceCurrency”: “USD”,
“availability”: “https://schema.org/InStock”,
“seller”: {
“@type”: “Organization”,
“name”: “Konmask.com”
}
}
}
{
“@context”: “https://schema.org”,
“@type”: “FAQPage”,
“mainEntity”: [
{
“@type”: “Question”,
“name”: “What is the difference between RM7850A1027 and other RM7850 variants?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “The RM7850A1027 is specifically configured for 120V AC / 50–60 Hz with a 30-second post-purge. Other variants may differ in voltage, pre-purge timing, or amplifier compatibility.”
}
},
{
“@type”: “Question”,
“name”: “Can the RM7850A1027 replace an older Honeywell R7850 or R4795 module?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Direct replacement depends on the base wiring and amplifier configuration. Contact Konmask.com technical team with your existing part number for compatibility confirmation.”
}
},
{
“@type”: “Question”,
“name”: “Do you provide a Certificate of Origin for customs?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Yes. Full export documentation including COO, commercial invoice, and packing list is provided with every shipment.”
}
},
{
“@type”: “Question”,
“name”: “What is the lead time for the RM7850A1027?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Lead time varies by stock availability. Submit an RFQ and we will confirm within 24 business hours.”
}
},
{
“@type”: “Question”,
“name”: “Is the Honeywell RM7850A1027 CE and UL certified?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Honeywell RM7850 series modules carry UL Listing and CE Marking. Please request the current datasheet for the latest certification status.”
}
}
]
}
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
