Lochinvar & A.O. Smith 100157720 Switch
The Lochinvar & A.O. Smith 100157720 Switch is a critical safety component designed for high-performance hydronic systems. This Adjustable High Limit control features a Manual Reset (M/R) mechanism, ensuring that the system remains locked out if temperatures exceed the predetermined safety threshold until a technician can perform a diagnostic check. Engineers and field contractors rely on the 100157720 limit switch for its precision in monitoring outlet water temperatures across various commercial and residential platforms. Built for durability in demanding environments, this OEM replacement part maintains tight tolerances to prevent thermal runaway and protect the heat exchanger from high-limit excursions.
Engineered for broad compatibility, the Lochinvar 100157720 is the standard specification for several high-efficiency series. It is a direct fit for Lochinvar Knight Boilers (models KB080-285 and XL KB399-800), Wall Mount Boilers (WB050-210), and Armor Condensing Water Heaters (AW150-800). By utilizing this HVAC high limit switch, contractors ensure that the safety string remains intact and compliant with manufacturer protocols. The adjustable dial allows for field-tuning to meet specific project requirements, providing the flexibility needed for diverse hydronic heating system repair and maintenance tasks.
Key Benefits:- Precise Temperature Regulation: Features an adjustable range to calibrate the high-end safety cutoff with professional accuracy.
- Manual Reset Safety: The M/R function prevents automatic cycling after a high-temperature event, mandating a manual inspection to ensure system integrity.
- Versatile Application: Fully compatible with Lochinvar Knight, Knight XL, and Armor series commercial water heaters.
- Durable Construction: Designed to withstand the thermal cycling typical of condensing boiler environments without drifting from setpoints.
- Critical Protection: Acts as a failsafe against pump failure or flow obstructions by interrupting the burner circuit immediately upon reaching the limit.
- What happens if the 100157720 switch trips? When the outlet temperature exceeds the setting, the switch opens, breaking the 24V control circuit to the blower and gas valve. It will stay open until the temperature drops and the manual reset button is physically depressed.
- Is this switch compatible with A.O. Smith equipment? Yes, as a shared part number across the manufacturer’s brands, it is used in specific A.O. Smith high-efficiency commercial water heating units that specify this part number.
- Can I use this for both space heating and domestic hot water applications? Yes, this limit switch is rated for use in both Knight heating boilers and Armor water heaters, provided it matches the original equipment specifications.
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 100157720 Switch
The Lochinvar & A.O. Smith 100157720 Switch is a critical safety component designed for high-performance hydronic systems. This Adjustable High Limit control features a Manual Reset (M/R) mechanism, ensuring that the system remains locked out if temperatures exceed the predetermined safety threshold until a technician can perform a diagnostic check. Engineers and field contractors rely on the 100157720 limit switch for its precision in monitoring outlet water temperatures across various commercial and residential platforms. Built for durability in demanding environments, this OEM replacement part maintains tight tolerances to prevent thermal runaway and protect the heat exchanger from high-limit excursions.
Engineered for broad compatibility, the Lochinvar 100157720 is the standard specification for several high-efficiency series. It is a direct fit for Lochinvar Knight Boilers (models KB080-285 and XL KB399-800), Wall Mount Boilers (WB050-210), and Armor Condensing Water Heaters (AW150-800). By utilizing this HVAC high limit switch, contractors ensure that the safety string remains intact and compliant with manufacturer protocols. The adjustable dial allows for field-tuning to meet specific project requirements, providing the flexibility needed for diverse hydronic heating system repair and maintenance tasks.
Key Benefits:- Precise Temperature Regulation: Features an adjustable range to calibrate the high-end safety cutoff with professional accuracy.
- Manual Reset Safety: The M/R function prevents automatic cycling after a high-temperature event, mandating a manual inspection to ensure system integrity.
- Versatile Application: Fully compatible with Lochinvar Knight, Knight XL, and Armor series commercial water heaters.
- Durable Construction: Designed to withstand the thermal cycling typical of condensing boiler environments without drifting from setpoints.
- Critical Protection: Acts as a failsafe against pump failure or flow obstructions by interrupting the burner circuit immediately upon reaching the limit.
- What happens if the 100157720 switch trips? When the outlet temperature exceeds the setting, the switch opens, breaking the 24V control circuit to the blower and gas valve. It will stay open until the temperature drops and the manual reset button is physically depressed.
- Is this switch compatible with A.O. Smith equipment? Yes, as a shared part number across the manufacturer’s brands, it is used in specific A.O. Smith high-efficiency commercial water heating units that specify this part number.
- Can I use this for both space heating and domestic hot water applications? Yes, this limit switch is rated for use in both Knight heating boilers and Armor water heaters, provided it matches the original equipment specifications.
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 100157720 Switch is a critical safety component designed for high-performance hydronic systems. This Adjustable High Limit control features a Manual Reset (M/R) mechanism, ensuring that the system remains locked out if temperatures exceed the predetermined safety threshold until a technician can perform a diagnostic check. Engineers and field contractors rely on the 100157720 limit switch for its precision in monitoring outlet water temperatures across various commercial and residential platforms. Built for durability in demanding environments, this OEM replacement part maintains tight tolerances to prevent thermal runaway and protect the heat exchanger from high-limit excursions.
Engineered for broad compatibility, the Lochinvar 100157720 is the standard specification for several high-efficiency series. It is a direct fit for Lochinvar Knight Boilers (models KB080-285 and XL KB399-800), Wall Mount Boilers (WB050-210), and Armor Condensing Water Heaters (AW150-800). By utilizing this HVAC high limit switch, contractors ensure that the safety string remains intact and compliant with manufacturer protocols. The adjustable dial allows for field-tuning to meet specific project requirements, providing the flexibility needed for diverse hydronic heating system repair and maintenance tasks.
Key Benefits:- Precise Temperature Regulation: Features an adjustable range to calibrate the high-end safety cutoff with professional accuracy.
- Manual Reset Safety: The M/R function prevents automatic cycling after a high-temperature event, mandating a manual inspection to ensure system integrity.
- Versatile Application: Fully compatible with Lochinvar Knight, Knight XL, and Armor series commercial water heaters.
- Durable Construction: Designed to withstand the thermal cycling typical of condensing boiler environments without drifting from setpoints.
- Critical Protection: Acts as a failsafe against pump failure or flow obstructions by interrupting the burner circuit immediately upon reaching the limit.
- What happens if the 100157720 switch trips? When the outlet temperature exceeds the setting, the switch opens, breaking the 24V control circuit to the blower and gas valve. It will stay open until the temperature drops and the manual reset button is physically depressed.
- Is this switch compatible with A.O. Smith equipment? Yes, as a shared part number across the manufacturer’s brands, it is used in specific A.O. Smith high-efficiency commercial water heating units that specify this part number.
- Can I use this for both space heating and domestic hot water applications? Yes, this limit switch is rated for use in both Knight heating boilers and Armor water heaters, provided it matches the original equipment specifications.
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.
