Weil-McLain 540202839 LP Orifice Assembly, ECO-155

Weil-McLain LP Orifice Assembly – Precision Component for ECO 155 Boilers

The Weil-McLain 540-202-839 LP Orifice Assembly is a factory-engineered part designed for use with the Weil-McLain ECO 155 gas-fired water boiler. This assembly ensures accurate metering of liquid propane gas, allowing the unit to operate at proper efficiency and combustion performance. Built from durable materials, it provides reliability and consistency in demanding heating applications.

Professional Advantages

• Exact Fit: Specifically manufactured for the ECO 155 model to maintain system integrity and performance.
• Engineered Gas Flow: Ensures correct pressure and flow rates when converting to LP fuel, optimizing combustion efficiency.
• Durable Materials: Constructed from corrosion-resistant brass for longevity under high-temperature and high-demand conditions.
• System Protection: Maintains boiler safety and prevents operational issues linked to incorrect fuel-air mixture.

Technical Specifications

• Part Number: 540-202-839
• Boiler Compatibility: Weil-McLain ECO 155
• Fuel Type: Liquid Propane (LP)
• Material: Brass assembly
• Function: LP gas orifice for precise metering

Installation Notes

Installation of this orifice assembly should be performed by a licensed HVAC technician or plumber. Correct installation is essential for safe combustion, adherence to local code requirements, and warranty compliance. The component is engineered for straightforward integration, but proper testing with combustion analysis equipment is strongly recommended after installation.

Application Guidance

For Contractors: The orifice assembly provides confidence in system performance during natural gas to propane conversions. It reduces call-backs by ensuring combustion efficiency is within Weil-McLain’s design specifications.

For System Owners: This part is critical for reliable operation when converting the ECO 155 to propane. Always consult a qualified professional for installation to maintain safety and system performance.

Summary

The Weil-McLain 540-202-839 LP Orifice Assembly is a precision-engineered part designed to keep ECO 155 boilers operating efficiently and safely on propane fuel. With its durable construction and factory-certified design, it remains the standard choice for professional-grade installations.