Lochinvar & A.O. Smith 100208386 - Pressure Switch Kit, 2.25" WC
Lochinvar & A.O. Smith 100208386 - Pressure Switch Kit, 2.25" WC
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This sensitive air proving device ensures safe boiler operation by verifying proper combustion airflow before ignition. The 100208386 2.25"wc pressure switch kit from Lochinvar is designed to meet strict original factory tolerances, preventing burner lockout or unsafe firing conditions by monitoring differential pressure across the combustion system.
The mechanism utilizes an internal diaphragm that activates a micro-switch once the vent fan reaches the required negative pressure threshold. By providing this critical feedback to the boiler control board, it prevents fuel delivery if the venting system is obstructed or if the blower motor is operating below the necessary RPM range.
Key System Performance Baselines:
- Calibrated Threshold: Precisely set to 2.25 inches of water column to ensure safe ignition.
- Safety Interlock: Directly monitors venting integrity to prevent hazardous combustion.
- OEM Specification: Manufactured by Lochinvar/A.O. Smith for seamless electrical and mechanical integration.
⚠️ Application Profile: Primarily used in commercial and residential Lochinvar and A.O. Smith high-efficiency hydronic boilers and water heaters requiring specific draft proving safety sequences.
| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 100208386 |
| Pressure Setpoint | 2.25"wc |
| Compatible Brands | Lochinvar, A.O. Smith |
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