Weil McLain 510-811-456 Universal Control System Conversion Kit for LGB MGB Boilers

The Weil McLain 510-811-456 Universal Control System (CSD-1) is a comprehensive conversion kit designed to upgrade LGB and MGB series boilers from S86H control systems to the modern UCS (Universal Control System). This complete retrofit kit provides improved reliability, enhanced safety features, and simplified diagnostics for residential and light commercial boiler applications.

Complete Kit Includes:

• Universal control panel with advanced diagnostic capabilities
• Two ignition/sensing control modules with 24-volt operation
• Pilot burner assembly for reliable ignition
• Pre-wired wiring harness for simplified installation
• Ignition cable assembly
• Mounting hardware and detailed installation instructions

This conversion kit is specifically engineered for Weil McLain LGB (Low Gas Boiler) and MGB (Medium Gas Boiler) models, providing a direct replacement for outdated or damaged control systems. The UCS features lockout after three ignition trials, automatic safety shutdown, and improved flame sensing technology. The modular design allows for easier troubleshooting and component replacement compared to older integrated control systems.

Installation Note: This kit upgrades legacy S86H controls to the Universal Control System. Professional installation by a qualified HVAC technician is recommended to ensure proper wiring, gas valve compatibility, and system safety checks.