Lochinvar & A.O. Smith 100208385 Pressure Switch
The Lochinvar & A.O. Smith 100208385 Pressure Switch is a critical safety component designed for precise draft monitoring in high-efficiency Crest FBN(L) 751-2001 heating boilers. Calibrated to a set point of 3" WC (Water Column), this OEM switch ensures that the inducer motor is generating the required static pressure for safe combustion gas venting before allowing the ignition sequence to proceed. As a veteran-grade HVAC replacement part, it features a robust diaphragm construction to withstand the cycling demands of commercial hydronic systems.
Engineered for seamless integration, the 100208385 pressure switch facilitates accurate boiler pressure sensing to prevent hazardous flue gas recirculation or improper air-to-fuel ratios. When diagnosing furnace ignition failure or intermittent short-cycling, verifying the integrity of this draft inducer switch is a standard protocol for mechanical contractors. This genuine Lochinvar part ensures electrical continuity and system reliability in demanding A.O. Smith water heater and boiler applications where tight tolerances are non-negotiable.
Key Benefits- Precise 3" WC Calibration: Maintains strict safety thresholds for optimal exhaust gas venting and combustion efficiency.
- OEM Compatibility: Specifically engineered for Lochinvar Crest series and related A.O. Smith commercial heating equipment.
- High-Durability Diaphragm: Built to resist premature wear and sticking, reducing frequent pressure switch stuck open faults.
- Direct Fit Installation: Standard terminal connections and mounting footprint allow for rapid field replacement by technicians.
What causes a 100208385 pressure switch to trip?
Trips are typically caused by restricted vent pipes, a failing inducer motor, cracked pressure tubing, or excessive condensate buildup in the collector box.
How do I test this switch with a manometer?
Connect a digital manometer to the sensing port to confirm the system is generating at least 3 inches of water column pressure. Use a multimeter to verify the switch closes once that set point is reached.
Can I use a lower-rated pressure switch as a substitute?
No. Using a switch with a different WC rating can lead to dangerous operating conditions or constant system lockouts, as the control board relies on the specific 3" WC signal for safe operation.
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.
Lochinvar & A.O. Smith 100208385 Pressure Switch
The Lochinvar & A.O. Smith 100208385 Pressure Switch is a critical safety component designed for precise draft monitoring in high-efficiency Crest FBN(L) 751-2001 heating boilers. Calibrated to a set point of 3" WC (Water Column), this OEM switch ensures that the inducer motor is generating the required static pressure for safe combustion gas venting before allowing the ignition sequence to proceed. As a veteran-grade HVAC replacement part, it features a robust diaphragm construction to withstand the cycling demands of commercial hydronic systems.
Engineered for seamless integration, the 100208385 pressure switch facilitates accurate boiler pressure sensing to prevent hazardous flue gas recirculation or improper air-to-fuel ratios. When diagnosing furnace ignition failure or intermittent short-cycling, verifying the integrity of this draft inducer switch is a standard protocol for mechanical contractors. This genuine Lochinvar part ensures electrical continuity and system reliability in demanding A.O. Smith water heater and boiler applications where tight tolerances are non-negotiable.
Key Benefits- Precise 3" WC Calibration: Maintains strict safety thresholds for optimal exhaust gas venting and combustion efficiency.
- OEM Compatibility: Specifically engineered for Lochinvar Crest series and related A.O. Smith commercial heating equipment.
- High-Durability Diaphragm: Built to resist premature wear and sticking, reducing frequent pressure switch stuck open faults.
- Direct Fit Installation: Standard terminal connections and mounting footprint allow for rapid field replacement by technicians.
What causes a 100208385 pressure switch to trip?
Trips are typically caused by restricted vent pipes, a failing inducer motor, cracked pressure tubing, or excessive condensate buildup in the collector box.
How do I test this switch with a manometer?
Connect a digital manometer to the sensing port to confirm the system is generating at least 3 inches of water column pressure. Use a multimeter to verify the switch closes once that set point is reached.
Can I use a lower-rated pressure switch as a substitute?
No. Using a switch with a different WC rating can lead to dangerous operating conditions or constant system lockouts, as the control board relies on the specific 3" WC signal for safe operation.
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 100208385 Pressure Switch is a critical safety component designed for precise draft monitoring in high-efficiency Crest FBN(L) 751-2001 heating boilers. Calibrated to a set point of 3" WC (Water Column), this OEM switch ensures that the inducer motor is generating the required static pressure for safe combustion gas venting before allowing the ignition sequence to proceed. As a veteran-grade HVAC replacement part, it features a robust diaphragm construction to withstand the cycling demands of commercial hydronic systems.
Engineered for seamless integration, the 100208385 pressure switch facilitates accurate boiler pressure sensing to prevent hazardous flue gas recirculation or improper air-to-fuel ratios. When diagnosing furnace ignition failure or intermittent short-cycling, verifying the integrity of this draft inducer switch is a standard protocol for mechanical contractors. This genuine Lochinvar part ensures electrical continuity and system reliability in demanding A.O. Smith water heater and boiler applications where tight tolerances are non-negotiable.
Key Benefits- Precise 3" WC Calibration: Maintains strict safety thresholds for optimal exhaust gas venting and combustion efficiency.
- OEM Compatibility: Specifically engineered for Lochinvar Crest series and related A.O. Smith commercial heating equipment.
- High-Durability Diaphragm: Built to resist premature wear and sticking, reducing frequent pressure switch stuck open faults.
- Direct Fit Installation: Standard terminal connections and mounting footprint allow for rapid field replacement by technicians.
What causes a 100208385 pressure switch to trip?
Trips are typically caused by restricted vent pipes, a failing inducer motor, cracked pressure tubing, or excessive condensate buildup in the collector box.
How do I test this switch with a manometer?
Connect a digital manometer to the sensing port to confirm the system is generating at least 3 inches of water column pressure. Use a multimeter to verify the switch closes once that set point is reached.
Can I use a lower-rated pressure switch as a substitute?
No. Using a switch with a different WC rating can lead to dangerous operating conditions or constant system lockouts, as the control board relies on the specific 3" WC signal for safe operation.
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.
