Weil-McLain 383500665 Ultra Gas Boilers Control Upgrade Kit, Ultra Gas Boilers

The Weil-McLain 383-500-665 U-Control Upgrade Kit is an OEM-engineered control module replacement designed for Ultra Series 1 and 2 gas boilers. This upgrade kit provides enhanced operational control, improved diagnostics, and compatibility with Weil-McLain’s advanced U-Control system architecture. The module ensures consistent boiler performance, optimized combustion management, and compliance with current system safety and efficiency standards. It is intended for professional installation and field integration with specified Ultra boiler models.

Details

• Model Number: 383-500-665
• Manufacturer: Weil-McLain
• Product Type: U-Control Upgrade Kit / Control Module
• Part Number: 2018424
• Compatibility: Weil-McLain Ultra Gas Boiler Models Ultra 80, Ultra 105, Ultra 155, and Ultra 233
• Series: Ultra Series 1 and 2
• Function: System control and communication upgrade for boiler operation and diagnostics
• Included Components: U-Control module, wiring harnesses, mounting hardware, and installation documentation
• Application: Retrofit or service upgrade for Weil-McLain Ultra boilers requiring updated control compatibility
• Control Features: Integrated logic control, temperature monitoring, and ignition sequencing
• Electrical Interface: Designed for direct connection to existing Ultra boiler wiring harness
• Compliance: Factory-tested OEM component; meets applicable ANSI and CSA standards for gas-fired appliance controls

Professional Specifications

The Weil-McLain 383-500-665 U-Control Upgrade Kit provides system modernization for Ultra Series 1 and 2 boilers, integrating advanced control logic for improved safety, modulation accuracy, and fault diagnostics. The control module interfaces with the boiler’s existing sensors and actuators to manage combustion, water temperature, and ignition sequencing. It includes updated firmware supporting enhanced communication with system components, providing service technicians with expanded troubleshooting data and operational feedback. The kit is configured for direct retrofit installation with no modification to boiler manifolds or gas valves. All components are factory calibrated and verified for compatibility and safety compliance.

Summary

The Weil-McLain 383-500-665 U-Control Upgrade Kit provides a factory-authorized control replacement for Ultra Series 1 and 2 gas boilers. Engineered for reliable integration, it delivers improved control precision, diagnostic capability, and system safety in professional boiler maintenance and retrofit applications.