Lochinvar & A.O. Smith 100166222 Pressure Switch
The Lochinvar & A.O. Smith 100166222 Pressure Switch is a critical safety component engineered for precise induced draft monitoring in high-efficiency commercial boilers and water heaters. As a veteran-grade HVAC pressure switch, this part ensures the combustion fan or inducer motor is moving sufficient air to safely vent flue gases before the ignition sequence begins. Built to handle the rigorous demands of hydronic heating systems, it features a highly sensitive internal diaphragm that reacts to minute changes in inches surface water column (wc). When the negative pressure meets the factory-calibrated set point, the internal contacts close, allowing the Smart Control module to proceed with the firing cycle. This genuine OEM replacement part is compatible with a wide range of Lochinvar Knight and A.O. Smith commercial units, providing the reliable blocked vent protection necessary to prevent hazardous exhaust buildup and equipment damage in professional mechanical rooms.
Key Benefits for Contractors- Precise Safety Proving: Ensures the inducer motor is creating a proper draft, preventing ignition failure due to blocked flues or intake pipes.
- High-Durability Diaphragm: Engineered to withstand the thermal cycling and moisture typical of condensing boiler environments.
- Exact OEM Fit: Eliminates the guesswork and mounting struggles associated with universal "one-size-fits-all" switches.
- System Reliability: Minimizes nuisance service calls by providing consistent electrical continuity under specific vacuum thresholds.
- What causes a pressure switch error code on a Lochinvar boiler? Most often, this is due to a blocked flue termination, tubing containing moisture, or a failing inducer motor that cannot reach the required vacuum set point.
- Can I use a universal switch as a substitute for the 100166222? It is not recommended. This Honeywell or Cleveland style switch is calibrated to a specific WC rating; an incorrect set point can lead to unsafe combustion or constant lockout.
- How do I test this switch in the field? Use a digital manometer to measure the actual draft being pulled and a multimeter to check for 24V signal passage once the inducer reaches full speed.
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: $145.87
-65%$145.87
$51.05Lochinvar & A.O. Smith 100166222 Pressure Switch
The Lochinvar & A.O. Smith 100166222 Pressure Switch is a critical safety component engineered for precise induced draft monitoring in high-efficiency commercial boilers and water heaters. As a veteran-grade HVAC pressure switch, this part ensures the combustion fan or inducer motor is moving sufficient air to safely vent flue gases before the ignition sequence begins. Built to handle the rigorous demands of hydronic heating systems, it features a highly sensitive internal diaphragm that reacts to minute changes in inches surface water column (wc). When the negative pressure meets the factory-calibrated set point, the internal contacts close, allowing the Smart Control module to proceed with the firing cycle. This genuine OEM replacement part is compatible with a wide range of Lochinvar Knight and A.O. Smith commercial units, providing the reliable blocked vent protection necessary to prevent hazardous exhaust buildup and equipment damage in professional mechanical rooms.
Key Benefits for Contractors- Precise Safety Proving: Ensures the inducer motor is creating a proper draft, preventing ignition failure due to blocked flues or intake pipes.
- High-Durability Diaphragm: Engineered to withstand the thermal cycling and moisture typical of condensing boiler environments.
- Exact OEM Fit: Eliminates the guesswork and mounting struggles associated with universal "one-size-fits-all" switches.
- System Reliability: Minimizes nuisance service calls by providing consistent electrical continuity under specific vacuum thresholds.
- What causes a pressure switch error code on a Lochinvar boiler? Most often, this is due to a blocked flue termination, tubing containing moisture, or a failing inducer motor that cannot reach the required vacuum set point.
- Can I use a universal switch as a substitute for the 100166222? It is not recommended. This Honeywell or Cleveland style switch is calibrated to a specific WC rating; an incorrect set point can lead to unsafe combustion or constant lockout.
- How do I test this switch in the field? Use a digital manometer to measure the actual draft being pulled and a multimeter to check for 24V signal passage once the inducer reaches full speed.
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
Shipping & Returns
Shipping & Returns
Description
The Lochinvar & A.O. Smith 100166222 Pressure Switch is a critical safety component engineered for precise induced draft monitoring in high-efficiency commercial boilers and water heaters. As a veteran-grade HVAC pressure switch, this part ensures the combustion fan or inducer motor is moving sufficient air to safely vent flue gases before the ignition sequence begins. Built to handle the rigorous demands of hydronic heating systems, it features a highly sensitive internal diaphragm that reacts to minute changes in inches surface water column (wc). When the negative pressure meets the factory-calibrated set point, the internal contacts close, allowing the Smart Control module to proceed with the firing cycle. This genuine OEM replacement part is compatible with a wide range of Lochinvar Knight and A.O. Smith commercial units, providing the reliable blocked vent protection necessary to prevent hazardous exhaust buildup and equipment damage in professional mechanical rooms.
Key Benefits for Contractors- Precise Safety Proving: Ensures the inducer motor is creating a proper draft, preventing ignition failure due to blocked flues or intake pipes.
- High-Durability Diaphragm: Engineered to withstand the thermal cycling and moisture typical of condensing boiler environments.
- Exact OEM Fit: Eliminates the guesswork and mounting struggles associated with universal "one-size-fits-all" switches.
- System Reliability: Minimizes nuisance service calls by providing consistent electrical continuity under specific vacuum thresholds.
- What causes a pressure switch error code on a Lochinvar boiler? Most often, this is due to a blocked flue termination, tubing containing moisture, or a failing inducer motor that cannot reach the required vacuum set point.
- Can I use a universal switch as a substitute for the 100166222? It is not recommended. This Honeywell or Cleveland style switch is calibrated to a specific WC rating; an incorrect set point can lead to unsafe combustion or constant lockout.
- How do I test this switch in the field? Use a digital manometer to measure the actual draft being pulled and a multimeter to check for 24V signal passage once the inducer reaches full speed.
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.
