Lochinvar & A.O. Smith 100224394 Pressure Switch
The Lochinvar & A.O. Smith 100224394 Pressure Switch is a critical safety component designed for high-efficiency water heaters and HVAC systems. This air pressure switch is factory-calibrated to a -1.66" WC (Water Column) setpoint and features a Normally Closed (N.C.) contact configuration. As an essential part of the combustion blower assembly, this OEM replacement part monitors the negative pressure generated by the inducer fan to ensure proper venting of flue gases before allowing the ignition sequence to proceed.
Ruggedly constructed for precision and reliability, the 100224394 ensures the combustion process remains within safe operational parameters. Technicians frequently utilize this switch to resolve "pressure switch stuck open" codes or "venting failure" errors in compatible Lochinvar and A.O. Smith residential and light commercial power-vented units. Its specific calibration ensures compatibility with models requiring exact negative pressure sensing to prevent hazardous exhaust backup or incomplete combustion cycles.
Key Benefits- Precise Calibration: Factory-set at -1.66" WC to meet the exact airflow requirements of specified high-efficiency models.
- OEM Compatibility: A direct Lochinvar & A.O. Smith performance switch, ensuring a perfect fit and seamless integration with existing wiring harnesses.
- Safety Compliance: Prevents the burner from firing if the venting system is obstructed or if the inducer blower fails to reach the required RPM.
- Durable Construction: Built to withstand the high-temperature and high-cycling demands of modern HVACR systems.
What causes a pressure switch to trip in these units?
Common triggers include a blocked vent pipe, a kinked sensing tube, or a failing inducer motor that cannot pull the required -1.66" WC vacuum. Always inspect the venting and orifice for debris before replacing the switch.
How do I verify if this normally closed switch is functioning?
Using a multimeter set to continuity, check the terminals while the system is at rest. As an N.C. switch, it should show continuity until the specified negative pressure is reached during the inducer pre-purge cycle.
Can I use this as a universal replacement?
No. Pressure switches are calibrated to specific WC ratings. Using a switch with an incorrect setpoint can lead to dangerous operating conditions or repeated system lockouts.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $41.89
-65%$41.89
$14.66Lochinvar & A.O. Smith 100224394 Pressure Switch
The Lochinvar & A.O. Smith 100224394 Pressure Switch is a critical safety component designed for high-efficiency water heaters and HVAC systems. This air pressure switch is factory-calibrated to a -1.66" WC (Water Column) setpoint and features a Normally Closed (N.C.) contact configuration. As an essential part of the combustion blower assembly, this OEM replacement part monitors the negative pressure generated by the inducer fan to ensure proper venting of flue gases before allowing the ignition sequence to proceed.
Ruggedly constructed for precision and reliability, the 100224394 ensures the combustion process remains within safe operational parameters. Technicians frequently utilize this switch to resolve "pressure switch stuck open" codes or "venting failure" errors in compatible Lochinvar and A.O. Smith residential and light commercial power-vented units. Its specific calibration ensures compatibility with models requiring exact negative pressure sensing to prevent hazardous exhaust backup or incomplete combustion cycles.
Key Benefits- Precise Calibration: Factory-set at -1.66" WC to meet the exact airflow requirements of specified high-efficiency models.
- OEM Compatibility: A direct Lochinvar & A.O. Smith performance switch, ensuring a perfect fit and seamless integration with existing wiring harnesses.
- Safety Compliance: Prevents the burner from firing if the venting system is obstructed or if the inducer blower fails to reach the required RPM.
- Durable Construction: Built to withstand the high-temperature and high-cycling demands of modern HVACR systems.
What causes a pressure switch to trip in these units?
Common triggers include a blocked vent pipe, a kinked sensing tube, or a failing inducer motor that cannot pull the required -1.66" WC vacuum. Always inspect the venting and orifice for debris before replacing the switch.
How do I verify if this normally closed switch is functioning?
Using a multimeter set to continuity, check the terminals while the system is at rest. As an N.C. switch, it should show continuity until the specified negative pressure is reached during the inducer pre-purge cycle.
Can I use this as a universal replacement?
No. Pressure switches are calibrated to specific WC ratings. Using a switch with an incorrect setpoint can lead to dangerous operating conditions or repeated system lockouts.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Lochinvar & A.O. Smith 100224394 Pressure Switch is a critical safety component designed for high-efficiency water heaters and HVAC systems. This air pressure switch is factory-calibrated to a -1.66" WC (Water Column) setpoint and features a Normally Closed (N.C.) contact configuration. As an essential part of the combustion blower assembly, this OEM replacement part monitors the negative pressure generated by the inducer fan to ensure proper venting of flue gases before allowing the ignition sequence to proceed.
Ruggedly constructed for precision and reliability, the 100224394 ensures the combustion process remains within safe operational parameters. Technicians frequently utilize this switch to resolve "pressure switch stuck open" codes or "venting failure" errors in compatible Lochinvar and A.O. Smith residential and light commercial power-vented units. Its specific calibration ensures compatibility with models requiring exact negative pressure sensing to prevent hazardous exhaust backup or incomplete combustion cycles.
Key Benefits- Precise Calibration: Factory-set at -1.66" WC to meet the exact airflow requirements of specified high-efficiency models.
- OEM Compatibility: A direct Lochinvar & A.O. Smith performance switch, ensuring a perfect fit and seamless integration with existing wiring harnesses.
- Safety Compliance: Prevents the burner from firing if the venting system is obstructed or if the inducer blower fails to reach the required RPM.
- Durable Construction: Built to withstand the high-temperature and high-cycling demands of modern HVACR systems.
What causes a pressure switch to trip in these units?
Common triggers include a blocked vent pipe, a kinked sensing tube, or a failing inducer motor that cannot pull the required -1.66" WC vacuum. Always inspect the venting and orifice for debris before replacing the switch.
How do I verify if this normally closed switch is functioning?
Using a multimeter set to continuity, check the terminals while the system is at rest. As an N.C. switch, it should show continuity until the specified negative pressure is reached during the inducer pre-purge cycle.
Can I use this as a universal replacement?
No. Pressure switches are calibrated to specific WC ratings. Using a switch with an incorrect setpoint can lead to dangerous operating conditions or repeated system lockouts.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
