Lochinvar & A.O. Smith 100166241 Pressure Switch
The Lochinvar and A.O. Smith 100166241 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high-efficiency water heaters and boilers. This SPDT (Single Pole Double Throw) switch is factory-calibrated to a .21" WC (water column) set point, ensuring the inducer fan generates sufficient static pressure before allowing the ignition sequence to proceed. Engineered as a direct OEM replacement part, it replaces legacy part numbers 100166241 and 18L13. Its robust diaphragm construction handles the cycling demands of commercial and residential heating systems, maintaining signal integrity to the integrated control board. Field technicians rely on this switch for troubleshooting pressure switch stuck open errors and ensuring reliable flue gas venting. Proper installation ensures accurate differential pressure sensing, preventing hazardous conditions associated with blocked flues or failing blower motors.
Key Benefits for Technicians:
- Precise Actuation: Calibrated at .21" WC for exact compliance with A.O. Smith and Lochinvar combustion specifications.
- Universal SPDT Logic: Provides versatile wiring configurations for both normally open and normally closed circuits.
- OEM Compatibility: Ensures seamless fitment and electrical synchronization with Lochinvar Knight and A.O. Smith Cyclone models.
- Rugged Housing: Designed to withstand high-ambient temperatures near the heat exchanger and venting assembly.
Common Installation & Technical Questions:
How do I diagnose a 100166241 pressure switch failure?
Use a manometer to verify the inducer is pulling more than .21" WC. If the pressure is sufficient but the SPDT switch fails to close the circuit, the internal diaphragm or electrical contacts have likely failed.
What causes this switch to trip frequently?
Frequent tripping usually indicates restricted venting airflow, a clogged condensate trap, or a deteriorating inducer motor rather than a faulty switch. Always check for obstructions in the sensing tubes.
Can this replace a switch with a different WC rating?
No. HVAC safety protocols require using the exact inches of water column rating specified by the manufacturer to ensure proper combustion air verification.
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: $103.91
-65%$103.91
$36.37Lochinvar & A.O. Smith 100166241 Pressure Switch
The Lochinvar and A.O. Smith 100166241 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high-efficiency water heaters and boilers. This SPDT (Single Pole Double Throw) switch is factory-calibrated to a .21" WC (water column) set point, ensuring the inducer fan generates sufficient static pressure before allowing the ignition sequence to proceed. Engineered as a direct OEM replacement part, it replaces legacy part numbers 100166241 and 18L13. Its robust diaphragm construction handles the cycling demands of commercial and residential heating systems, maintaining signal integrity to the integrated control board. Field technicians rely on this switch for troubleshooting pressure switch stuck open errors and ensuring reliable flue gas venting. Proper installation ensures accurate differential pressure sensing, preventing hazardous conditions associated with blocked flues or failing blower motors.
Key Benefits for Technicians:
- Precise Actuation: Calibrated at .21" WC for exact compliance with A.O. Smith and Lochinvar combustion specifications.
- Universal SPDT Logic: Provides versatile wiring configurations for both normally open and normally closed circuits.
- OEM Compatibility: Ensures seamless fitment and electrical synchronization with Lochinvar Knight and A.O. Smith Cyclone models.
- Rugged Housing: Designed to withstand high-ambient temperatures near the heat exchanger and venting assembly.
Common Installation & Technical Questions:
How do I diagnose a 100166241 pressure switch failure?
Use a manometer to verify the inducer is pulling more than .21" WC. If the pressure is sufficient but the SPDT switch fails to close the circuit, the internal diaphragm or electrical contacts have likely failed.
What causes this switch to trip frequently?
Frequent tripping usually indicates restricted venting airflow, a clogged condensate trap, or a deteriorating inducer motor rather than a faulty switch. Always check for obstructions in the sensing tubes.
Can this replace a switch with a different WC rating?
No. HVAC safety protocols require using the exact inches of water column rating specified by the manufacturer to ensure proper combustion air verification.
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 and A.O. Smith 100166241 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high-efficiency water heaters and boilers. This SPDT (Single Pole Double Throw) switch is factory-calibrated to a .21" WC (water column) set point, ensuring the inducer fan generates sufficient static pressure before allowing the ignition sequence to proceed. Engineered as a direct OEM replacement part, it replaces legacy part numbers 100166241 and 18L13. Its robust diaphragm construction handles the cycling demands of commercial and residential heating systems, maintaining signal integrity to the integrated control board. Field technicians rely on this switch for troubleshooting pressure switch stuck open errors and ensuring reliable flue gas venting. Proper installation ensures accurate differential pressure sensing, preventing hazardous conditions associated with blocked flues or failing blower motors.
Key Benefits for Technicians:
- Precise Actuation: Calibrated at .21" WC for exact compliance with A.O. Smith and Lochinvar combustion specifications.
- Universal SPDT Logic: Provides versatile wiring configurations for both normally open and normally closed circuits.
- OEM Compatibility: Ensures seamless fitment and electrical synchronization with Lochinvar Knight and A.O. Smith Cyclone models.
- Rugged Housing: Designed to withstand high-ambient temperatures near the heat exchanger and venting assembly.
Common Installation & Technical Questions:
How do I diagnose a 100166241 pressure switch failure?
Use a manometer to verify the inducer is pulling more than .21" WC. If the pressure is sufficient but the SPDT switch fails to close the circuit, the internal diaphragm or electrical contacts have likely failed.
What causes this switch to trip frequently?
Frequent tripping usually indicates restricted venting airflow, a clogged condensate trap, or a deteriorating inducer motor rather than a faulty switch. Always check for obstructions in the sensing tubes.
Can this replace a switch with a different WC rating?
No. HVAC safety protocols require using the exact inches of water column rating specified by the manufacturer to ensure proper combustion air verification.
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.
