
Ensure consistent combustion air monitoring with the high-precision 100166241 pressure switch, engineered for seamless compatibility with Lochinvar and A.O. Smith boiler systems. This 100166241 replacement component provides an accurate .21"wc set point to detect airflow status, allowing your heating equipment to operate within specified safety parameters while preventing ignition cycles under suboptimal draft conditions.
This device functions as a Single Pole Double Throw (SPDT) switch that reacts to precise differential pressure changes. When the measured pressure meets the factory-calibrated .21"wc threshold, the internal diaphragm triggers the switch mechanism, signaling the control board to verify airflow before safely initiating the burner sequence.
Key System Performance Baselines:
- Precision Calibration: Factory-set at .21"wc to match specific OEM venting requirements.
- Reliable Switching: SPDT configuration allows for both normally open and normally closed logic applications.
- Durability Standard: Constructed to withstand the high-cycle demands of commercial and residential hydronic equipment.
⚠️ Application Profile: Primarily utilized in high-efficiency boiler combustion air proving circuits, exhaust vent safety monitoring, and draft regulation systems for Lochinvar and A.O. Smith hydronic units.
| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 100166241 |
| Pressure Setting | .21"wc |
| Switch Configuration | SPDT |
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.