Lochinvar 100112658 Pressure Switch WC - 0.27

The Lochinvar 100112658 is a precision pressure switch designed for HVAC and boiler applications, specifically calibrated to activate at 0.27 inches water column (WC). This critical safety component monitors air pressure or draft conditions to ensure proper combustion and safe operation of heating equipment.

Key Features:

• Factory-calibrated setpoint of 0.27" WC for reliable, consistent operation
• Genuine Lochinvar OEM replacement part ensuring exact fit and compatibility
• Designed for use in gas-fired boilers and water heaters to verify proper draft and combustion air flow
• Reliable pressure sensing mechanism for safety interlock applications
• Durable construction for long service life in demanding HVAC environments

This pressure switch serves as a critical safety device, preventing equipment operation when insufficient air pressure or draft conditions are detected. It's commonly used to verify that combustion air blowers are operating properly before allowing gas valve operation. Regular inspection and replacement of pressure switches according to manufacturer guidelines helps maintain safe, efficient heating system operation.