Description
The Lochinvar & A.O. Smith 100208384 is a factory-specified pressure switch designed to monitor and protect combustion systems in Lochinvar and A.O. Smith boilers and water heaters. Calibrated to a precise setpoint of 0.85″ water column (WC), this switch ensures safe and efficient operation by verifying proper draft or combustion air pressure before allowing the burner to fire.
Key Features
- Factory-calibrated setpoint of 0.85″ WC for accurate pressure sensing
- OEM replacement part engineered specifically for Lochinvar and A.O. Smith equipment
- Monitors combustion air or draft pressure to confirm safe operating conditions
- Helps prevent unsafe burner operation in the event of blocked flue or inducer failure
- Direct drop-in replacement for simplified installation and minimal downtime
Application
This pressure switch is a critical safety component in gas-fired boilers and water heaters. It works in conjunction with the draft inducer or combustion air blower, confirming that adequate airflow is present before the ignition sequence proceeds. Using a genuine OEM part ensures compatibility and maintains equipment warranty compliance.
Specifications
- SKU: 100208384
- Pressure Setpoint: 0.85″ WC
- Brand: Lochinvar & A.O. Smith
- Type: Combustion Air / Draft Pressure Switch
- Application: Boilers & Water Heaters







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