Weil McLain 511-624-510 Pressure Differential Switch, SPDT, 1.00″ Setting, 0–4000 Ft Elevation

Description

The Weil McLain 511-624-510 is a precision-engineered Pressure Differential Switch designed specifically for use with Weil McLain boiler systems. Featuring a Single-Pole Double-Throw (SPDT) switching action, this switch monitors differential pressure to ensure safe and efficient boiler operation. With a factory-set 1.00″ water column pressure setting and a rated operating range of 0 to 4,000 feet elevation, it is well-suited for a broad range of residential and light commercial hydronic heating installations.

Key Features

• SPDT (Single-Pole Double-Throw) switching configuration for versatile circuit control
• Factory-set 1.00″ W.C. differential pressure setting for consistent, reliable performance
• Designed for installations at elevations from 0 to 4,000 feet
• OEM Weil McLain replacement part — ensures compatibility and proper fit
• Monitors pressure differential to protect boiler components and maintain safe operation
• Compact design for straightforward installation in tight boiler cabinet spaces

Application

This pressure differential switch is a genuine Weil McLain OEM component intended as a direct replacement for compatible Weil McLain boiler models. It plays a critical safety role by detecting inadequate airflow or venting conditions and interrupting the ignition or burner circuit when unsafe pressure differentials are detected, helping to prevent equipment damage and ensuring code-compliant operation.

Specifications

• Part Number: 511-624-510
• Brand: Weil McLain
• Switch Type: SPDT (Single-Pole Double-Throw)
• Pressure Setting: 1.00″ W.C.
• Elevation Range: 0 – 4,000 ft
• Application: Hydronic boiler pressure differential sensing