Lochinvar 100166242 0.27"wc SPDT Pressure Switch

The Lochinvar 100166242 is a single pole double throw (SPDT) pressure switch designed for use in Lochinvar boilers and water heaters. This critical safety component monitors system pressure and is calibrated to activate at 0.27 inches water column ("wc), ensuring proper combustion air pressure verification.

Key Features:

• SPDT (Single Pole Double Throw) switching configuration for versatile control applications
• Calibrated actuation point of 0.27 inches water column
• Genuine OEM Lochinvar replacement part
• Designed for reliable pressure sensing in gas-fired heating equipment
• Ensures safe operation by verifying adequate combustion air pressure

This pressure switch is commonly used to prove combustion air blower operation before allowing the burner to fire. It serves as an essential safety interlock in the ignition sequence, preventing unsafe operating conditions. The SPDT configuration allows for both normally open and normally closed contact applications, providing flexibility in control circuit design.