Weil McLain 511-624-403 Pressure Switch 1.22″ W.C.

Description

Weil McLain 511-624-403 Pressure Switch Overview

The Weil McLain 511-624-403 is an OEM replacement pressure switch rated at 1.22″ W.C. (water column), engineered specifically for use with compatible Weil McLain boiler systems. This pressure switch plays a critical role in the safe and efficient operation of your heating equipment by monitoring combustion air pressure and confirming proper draft inducer or venting performance before allowing the burner to fire.

Key Features

• OEM Weil McLain replacement pressure switch for precise fit and reliable performance
• Rated setpoint of 1.22″ W.C. (water column) for accurate pressure sensing
• Monitors draft inducer and venting system pressure as a combustion safety control
• Helps prevent unsafe burner operation when proper airflow is not established
• Direct drop-in replacement designed to restore original equipment function
• Built to withstand the demands of residential and light commercial boiler applications

Application

This pressure switch is designed as a direct OEM replacement for select Weil McLain boiler models. Always verify compatibility with your specific boiler model and serial number before installation. Consult the equipment service manual or contact a qualified HVAC technician to confirm the correct part for your application.

Why Choose OEM Weil McLain Parts?

Using genuine Weil McLain replacement components ensures your boiler system operates within factory-specified safety parameters. OEM parts maintain warranty compliance, reduce callbacks, and deliver the dependable performance that installers and homeowners expect from the Weil McLain brand.