Description
The Weil McLain 510-811-456 is a complete S86H Conversion to UCS (Universal Control System) Kit designed to upgrade and modernize your Weil McLain boiler’s ignition and control system. This all-in-one kit provides every component needed for a seamless conversion, eliminating the need to source individual parts and ensuring full system compatibility straight from the manufacturer.
What’s Included
- Control Panel
- 2 Ignition/Sensing Control Modules
- Pilot Burner Assembly
- Wiring Harness
- Ignition Cable
Key Benefits
- Factory-matched components ensure full compatibility with applicable Weil McLain boiler models
- Streamlines the conversion from S86H controls to the UCS (Universal Control System) platform
- Dual ignition/sensing control modules provide reliable pilot ignition and flame sensing
- Includes pre-assembled wiring harness and ignition cable for faster, cleaner installation
- Genuine Weil McLain OEM replacement kit for consistent performance and longevity
- Reduces downtime with a complete, ready-to-install kit format
Application
This conversion kit is intended for use on Weil McLain boilers originally equipped with the S86H control configuration. The upgrade to the UCS platform improves system reliability and serviceability. Always refer to the applicable Weil McLain installation and service manual to confirm compatibility with your specific boiler model before installation.
Product Details
- Brand: Weil McLain
- Part Number: 510-811-456
- Kit Type: S86H to UCS Conversion
- Components: Control Panel, 2 Ignition/Sensing Control Modules, Pilot Burner Assembly, Wiring Harness, Ignition Cable







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