Protectorelay Oil Burner Relay with Lock Out Timing, 4" x 4" Junction Box

Honeywell R8184M1051/U – Protectorelay Oil Primary Control with Intermittent Ignition

The Honeywell R8184M1051/U is a solid-state oil burner primary control designed for use with intermittent ignition systems on residential and light commercial oil-fired burners. This control manages the operation of the burner and oil valve, and incorporates flame sensing via a cadmium sulfide (cad cell) sensor to monitor flame presence for safety lockout functionality.

The R8184M model includes a manual reset lockout feature for enhanced safety and a LED diagnostic display for lockout indication. It mounts directly to standard 4” x 4” junction boxes and operates over a broad input voltage range, making it suitable for various burner control applications.

Key Features

• Primary Function: Controls oil burner motor, ignition transformer, and solenoid valve
• Ignition Type: Intermittent ignition with cad cell flame sensing
• Safety Lockout: Manual reset required after safety lockout due to flame failure
• LED Diagnostic Indicator: Provides status indication for lockout events
• Mounting: Standard 4” x 4” junction box compatible
• Electrical Terminals: Quick-connect spade terminals

Technical Specifications

• Model: R8184M1051/U
• Input Voltage: 120/240 VAC, 60 Hz
• Load Rating: 7.4A full load / 44.4A locked rotor
• Temperature Range: -40°F to 130°F (-40°C to 55°C)
• Dimensions: 4-3/8" H × 4-1/8" W × 2-1/2" D
• Flame Detection: Cadmium sulfide cad cell sensor (sold separately)
• Lockout Timing: 15 seconds

Application Considerations

This control is suited for systems requiring intermittent ignition operation and manual reset after flame failure. Ensure compatibility with burner equipment and confirm the cad cell placement aligns with flame envelope. For retrofit installations, verify load capacities and voltage match system requirements.

Installation Notes

Installation should be performed by a qualified technician. Wiring must comply with local electrical and fuel codes. Verify correct alignment of cad cell sensor and ensure burner shutdown occurs within the 15-second trial-for-ignition period in the absence of flame.

System Integration

• Compatible with oil burners using intermittent ignition
• Works with Honeywell cad cell sensors and traditional transformer ignition systems
• Designed for use in conjunction with solenoid valves and ignition transformers

Summary

The Honeywell R8184M1051/U Protectorelay provides safe and reliable oil burner control through intermittent ignition and solid-state flame sensing. Its manual reset lockout, diagnostic feedback, and rugged design make it a dependable solution for residential and commercial burner applications requiring strict flame monitoring and fast shutdown response.