Lochinvar & A.O. Smith 100158115 Pressure Switch
Maintaining proper combustion and safety protocols in high-efficiency water heating systems requires precision components like the Lochinvar & A.O. Smith 100158115 Pressure Switch. This genuine OEM replacement part is a normally closed (N.C.) air pressure switch factory-calibrated to a -1.42" WC (Water Column) set point. It serves as a blocked inlet air pressure switch, functioning as a critical safety limit that monitors the differential pressure within the venting system. If the intake or exhaust becomes restricted, the switch opens, breaking the 24V control circuit to prevent unsafe operation or incomplete combustion. Designed for seamless integration with Power Direct Vent residential gas water heaters, this component ensures the blower motor and burner assembly operate within safe manufacturer parameters. When diagnosing ignition failure or pressure switch lockout codes, technicians rely on this specific -1.42 inch WC switch to restore system sequence of operation in compatible A.O. Smith, Lochinvar, and State units.
Key Benefits:
- OEM Precision: Guaranteed -1.42" WC vacuum setting ensures accurate safety monitoring without nuisance tripping.
- Direct Compatibility: Engineered for A.O. Smith PR-5065, PR-7575, and CD-75075 models, as well as Lochinvar Power Direct Vent series.
- Safety Compliance: Functions as a normally closed switch that opens immediately upon detecting a blocked flue or intake air restriction.
- Durability: Built to withstand the high-cycle demands of modern HX condensing systems and variable-speed blowers.
Common Questions:
- Which models use the 100158115 switch? This switch is primarily utilized in A.O. Smith PR series and Lochinvar direct vent gas water heaters. Always verify the part number against your specific unit's rating plate.
- Can I adjust the -1.42" WC set point? No. This is a factory-set fixed pressure switch. Attempting to adjust the calibration can lead to hazardous combustion conditions and equipment damage.
- What causes this switch to stay open? Common field issues include blocked vent terminals, leaking pressure tubing, or a failing inducer blower that cannot pull the required 1.42 inches of vacuum.
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: $45.24
-65%$45.24
$15.83Lochinvar & A.O. Smith 100158115 Pressure Switch
Maintaining proper combustion and safety protocols in high-efficiency water heating systems requires precision components like the Lochinvar & A.O. Smith 100158115 Pressure Switch. This genuine OEM replacement part is a normally closed (N.C.) air pressure switch factory-calibrated to a -1.42" WC (Water Column) set point. It serves as a blocked inlet air pressure switch, functioning as a critical safety limit that monitors the differential pressure within the venting system. If the intake or exhaust becomes restricted, the switch opens, breaking the 24V control circuit to prevent unsafe operation or incomplete combustion. Designed for seamless integration with Power Direct Vent residential gas water heaters, this component ensures the blower motor and burner assembly operate within safe manufacturer parameters. When diagnosing ignition failure or pressure switch lockout codes, technicians rely on this specific -1.42 inch WC switch to restore system sequence of operation in compatible A.O. Smith, Lochinvar, and State units.
Key Benefits:
- OEM Precision: Guaranteed -1.42" WC vacuum setting ensures accurate safety monitoring without nuisance tripping.
- Direct Compatibility: Engineered for A.O. Smith PR-5065, PR-7575, and CD-75075 models, as well as Lochinvar Power Direct Vent series.
- Safety Compliance: Functions as a normally closed switch that opens immediately upon detecting a blocked flue or intake air restriction.
- Durability: Built to withstand the high-cycle demands of modern HX condensing systems and variable-speed blowers.
Common Questions:
- Which models use the 100158115 switch? This switch is primarily utilized in A.O. Smith PR series and Lochinvar direct vent gas water heaters. Always verify the part number against your specific unit's rating plate.
- Can I adjust the -1.42" WC set point? No. This is a factory-set fixed pressure switch. Attempting to adjust the calibration can lead to hazardous combustion conditions and equipment damage.
- What causes this switch to stay open? Common field issues include blocked vent terminals, leaking pressure tubing, or a failing inducer blower that cannot pull the required 1.42 inches of vacuum.
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.
Product Information
Product Information
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Shipping & Returns
Description
Maintaining proper combustion and safety protocols in high-efficiency water heating systems requires precision components like the Lochinvar & A.O. Smith 100158115 Pressure Switch. This genuine OEM replacement part is a normally closed (N.C.) air pressure switch factory-calibrated to a -1.42" WC (Water Column) set point. It serves as a blocked inlet air pressure switch, functioning as a critical safety limit that monitors the differential pressure within the venting system. If the intake or exhaust becomes restricted, the switch opens, breaking the 24V control circuit to prevent unsafe operation or incomplete combustion. Designed for seamless integration with Power Direct Vent residential gas water heaters, this component ensures the blower motor and burner assembly operate within safe manufacturer parameters. When diagnosing ignition failure or pressure switch lockout codes, technicians rely on this specific -1.42 inch WC switch to restore system sequence of operation in compatible A.O. Smith, Lochinvar, and State units.
Key Benefits:
- OEM Precision: Guaranteed -1.42" WC vacuum setting ensures accurate safety monitoring without nuisance tripping.
- Direct Compatibility: Engineered for A.O. Smith PR-5065, PR-7575, and CD-75075 models, as well as Lochinvar Power Direct Vent series.
- Safety Compliance: Functions as a normally closed switch that opens immediately upon detecting a blocked flue or intake air restriction.
- Durability: Built to withstand the high-cycle demands of modern HX condensing systems and variable-speed blowers.
Common Questions:
- Which models use the 100158115 switch? This switch is primarily utilized in A.O. Smith PR series and Lochinvar direct vent gas water heaters. Always verify the part number against your specific unit's rating plate.
- Can I adjust the -1.42" WC set point? No. This is a factory-set fixed pressure switch. Attempting to adjust the calibration can lead to hazardous combustion conditions and equipment damage.
- What causes this switch to stay open? Common field issues include blocked vent terminals, leaking pressure tubing, or a failing inducer blower that cannot pull the required 1.42 inches of vacuum.
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.
