Lochinvar & A.O. Smith 100187859 Switch
The Lochinvar & A.O. Smith 100187859 Switch is a critical 2.0" blocked outlet switch designed for high-efficiency gas-fired commercial water heaters and boilers. As a genuine OEM replacement part, this pressure switch is calibrated to detect vent obstructions, ensuring the system shuts down safely if exhaust gases cannot be properly expelled. It is commonly utilized in A.O. Smith Cyclone BTH-300A series and comparable Lochinvar Power-Fin models. This HVAC safety switch monitors the resistance in the 2-inch venting system, preventing the accumulation of carbon monoxide and protecting the heat exchanger from thermal stress. Field technicians should verify the blocked outlet sensor pressure settings against the appliance's data plate to ensure precise boiler performance. Durable construction ensures reliable signal continuity to the control board, maintaining safe operation during high-demand heating cycles. Replacing a fouled or intermittent water heater pressure switch with this factory-spec component restores the integrity of the exhaust monitoring circuit and prevents nuisance lockout codes.
Key Benefits:- OEM Compatibility: Exact replacement for Lochinvar 100187859 and A.O. Smith 100187859, ensuring seamless integration with the factory wiring harness.
- Enhanced System Safety: Actively monitors for blocked outlet conditions to prevent hazardous flue gas recirculation and equipment damage.
- Precision Calibration: Factory-set for 2.0-inch venting requirements, providing accurate response times compared to generic alternatives.
- Contractor Grade: Built to withstand the high-temperature and high-moisture environments found in commercial water heater venting systems.
- How do I know if this switch is failing? Common symptoms include the unit triggering a "Blocked Outlet" or "Pressure Switch Open" fault code, often preventing the burner from igniting.
- Is this compatible with 3-inch venting systems? No, this specific model is engineered for 2.0" blocked outlet applications; always check your manual for the correct vent diameter and switch rating.
- Does this include the sensing tubing? This part number is for the blocked outlet switch assembly; existing silicon tubing should be inspected for cracks or blockages during installation.
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: $64.51
-65%$64.51
$22.58Lochinvar & A.O. Smith 100187859 Switch
The Lochinvar & A.O. Smith 100187859 Switch is a critical 2.0" blocked outlet switch designed for high-efficiency gas-fired commercial water heaters and boilers. As a genuine OEM replacement part, this pressure switch is calibrated to detect vent obstructions, ensuring the system shuts down safely if exhaust gases cannot be properly expelled. It is commonly utilized in A.O. Smith Cyclone BTH-300A series and comparable Lochinvar Power-Fin models. This HVAC safety switch monitors the resistance in the 2-inch venting system, preventing the accumulation of carbon monoxide and protecting the heat exchanger from thermal stress. Field technicians should verify the blocked outlet sensor pressure settings against the appliance's data plate to ensure precise boiler performance. Durable construction ensures reliable signal continuity to the control board, maintaining safe operation during high-demand heating cycles. Replacing a fouled or intermittent water heater pressure switch with this factory-spec component restores the integrity of the exhaust monitoring circuit and prevents nuisance lockout codes.
Key Benefits:- OEM Compatibility: Exact replacement for Lochinvar 100187859 and A.O. Smith 100187859, ensuring seamless integration with the factory wiring harness.
- Enhanced System Safety: Actively monitors for blocked outlet conditions to prevent hazardous flue gas recirculation and equipment damage.
- Precision Calibration: Factory-set for 2.0-inch venting requirements, providing accurate response times compared to generic alternatives.
- Contractor Grade: Built to withstand the high-temperature and high-moisture environments found in commercial water heater venting systems.
- How do I know if this switch is failing? Common symptoms include the unit triggering a "Blocked Outlet" or "Pressure Switch Open" fault code, often preventing the burner from igniting.
- Is this compatible with 3-inch venting systems? No, this specific model is engineered for 2.0" blocked outlet applications; always check your manual for the correct vent diameter and switch rating.
- Does this include the sensing tubing? This part number is for the blocked outlet switch assembly; existing silicon tubing should be inspected for cracks or blockages during installation.
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 100187859 Switch is a critical 2.0" blocked outlet switch designed for high-efficiency gas-fired commercial water heaters and boilers. As a genuine OEM replacement part, this pressure switch is calibrated to detect vent obstructions, ensuring the system shuts down safely if exhaust gases cannot be properly expelled. It is commonly utilized in A.O. Smith Cyclone BTH-300A series and comparable Lochinvar Power-Fin models. This HVAC safety switch monitors the resistance in the 2-inch venting system, preventing the accumulation of carbon monoxide and protecting the heat exchanger from thermal stress. Field technicians should verify the blocked outlet sensor pressure settings against the appliance's data plate to ensure precise boiler performance. Durable construction ensures reliable signal continuity to the control board, maintaining safe operation during high-demand heating cycles. Replacing a fouled or intermittent water heater pressure switch with this factory-spec component restores the integrity of the exhaust monitoring circuit and prevents nuisance lockout codes.
Key Benefits:- OEM Compatibility: Exact replacement for Lochinvar 100187859 and A.O. Smith 100187859, ensuring seamless integration with the factory wiring harness.
- Enhanced System Safety: Actively monitors for blocked outlet conditions to prevent hazardous flue gas recirculation and equipment damage.
- Precision Calibration: Factory-set for 2.0-inch venting requirements, providing accurate response times compared to generic alternatives.
- Contractor Grade: Built to withstand the high-temperature and high-moisture environments found in commercial water heater venting systems.
- How do I know if this switch is failing? Common symptoms include the unit triggering a "Blocked Outlet" or "Pressure Switch Open" fault code, often preventing the burner from igniting.
- Is this compatible with 3-inch venting systems? No, this specific model is engineered for 2.0" blocked outlet applications; always check your manual for the correct vent diameter and switch rating.
- Does this include the sensing tubing? This part number is for the blocked outlet switch assembly; existing silicon tubing should be inspected for cracks or blockages during installation.
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.
