Core Functionality and Application
The Honeywell R7140M1007 programming burner control automates the firing sequence for single-burner combustion systems. This microprocessor-based relay module handles prepurge timing, pilot ignition, main flame establishment, and safety shutdown procedures. It supports gas, oil, or combination fuels, making it suitable for diverse industrial applications. Moreover, the device serves as a direct upgrade replacement for legacy R4140M and BC7000L with PM720M controls.
Technical Specifications
The following table details the core technical parameters for the Honeywell R7140M1007:
| Parameter | Specification |
|---|---|
| Model Number | R7140M1007 |
| Product Type | Programming Burner Control (Relay Module) |
| Operating Voltage | 120 VAC, 50/60 Hz |
| Dimensions (W × H × D) | 25.4 cm × 25.4 cm × 21.6 cm (10 × 10 × 8.5 in) |
| Weight | 1.8 kg (4.0 lbs) |
| Pilot Type | Interrupted or Intermittent (selectable) |
| Pilot Flame Establishing Period | 4 or 10 seconds (selectable) |
| Main Flame Establishing Period | 10 seconds or Intermittent (selectable) |
| Post Purge Duration | 15 seconds |
| Operating Temperature | -40°C to +60°C (-40°F to +140°F) |
Design and Installation Features
The Honeywell R7140M1007 features a microprocessor-based design that provides enhanced reliability and advanced diagnostic capabilities. It plugs directly into the existing Q520A wiring subbase, which eliminates the need for rewiring during upgrades. Furthermore, the module requires only two additional components for a complete system: an R78XX flame amplifier and an ST7800A purge timer card. Optionally, you can add an S7800A keyboard display module for real-time system monitoring and diagnostics.
System Integration and Replacement
This programming burner control directly replaces R4140M and BC7000L with PM720M legacy units using the same Q520A subbase. The module provides running interlocks for enhanced safety during burner operation. Additionally, the on/off configuration with proven low-fire purge ensures reliable startup sequences.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
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