11 in stock
Honeywell RM7840L1026 Relay Module
Honeywell RM7840L1026 Relay Module
Brand/Manufacturer: Honeywell
Order Number: RM7840L1026
Type: Burner Control Modules
Country of Origin: USA
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The Honeywell RM7840L1026, also cataloged as the RM7840L1026 Burner Control Relay Module, operates as a dedicated hardware component for automatic burner sequencing and safety shutoff execution within 7800 Series burner control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RM7840L1026 |
| Brand | Honeywell |
| Origin | United States |
| Weight | 3.00 lbs |
| Dimensions | Standard 7800 Series Relay Module Footprint |
| Operating Temp | -40 to 60 deg C |
| Power Consumption | 120 VAC (+10/-15%), 50/60 Hz logic supply |
| Ignition Type | Interrupted pilot type |
| Pilot & Timing | Intermittent 2nd stage pilot valve, 5s early spark termination, 15s post purge |
| Configurable Features | User selectable airflow check, pre-ignition interlock monitoring |
Channel-to-Channel Isolation and Loop Protocol Dynamics
Configured for precise combustion control, the module uses integrated solid-state logic to enforce critical pre-ignition purge, pilot ignition timing, and fixed 15-second post-purge cycles. Internal optocoupled isolation networks separate high-voltage valve outputs, airflow switch monitoring loops, and flame detector inputs from internal control microprocessors. Continuous flame signal processing continuously evaluates flame presence over 4-20 mA telemetry or specialized flame sensor circuits, triggering an immediate fail-safe shutdown upon loss of flame or safety interlock fault.
Frequently Asked Questions
Q: Can the RM7840L1026 relay module be hot-swapped while line voltage is active?
A: No, main line power supplying the wiring subbase and field actuators must be completely de-energized prior to installing or removing the module.
Q: How does the 15-second post-purge operate during sequence completion?
A: Upon normal burner shutdown or safety interruption, the module keeps the combustion air blower energized for a fixed 15-second post-purge cycle to clear unburned fuel gases from the combustion chamber.
Field Installation Guidelines
Ensure main power is completely disconnected before inserting the RM7840L1026 module into its matching 7800 Series wiring subbase. Snap the protective dust cover tightly into position to guard internal relay components against dust and particulate contamination. All high-voltage ignition leads and AC load circuits must be installed in separate grounded conduits away from low-voltage flame signal lines to avoid electromagnetic interference. Connect the subbase terminal grounding bar directly to panel earth using a heavy-gauge copper conductor.
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Testimonials
Fast Delivery, Excellent Quality
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
Reliable Partner for Original Parts
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
Trusted Source for Industrial Automation Spares
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson