Lochinvar & A.O. Smith 100113143 Switch
The Lochinvar & A.O. Smith 100113143 Blocked Inlet Switch is a critical safety component designed for high-efficiency commercial water heaters and boilers, including the Cyclone BTH and State SUF series. This genuine OEM replacement part acts as a normally closed (NC) pressure sensor calibrated to -2.5" WC. Its primary function is to monitor the integrity of the air intake system, ensuring the combustion blower receives adequate airflow for safe operation. If an obstruction occurs in the intake piping, the switch triggers an immediate system shutdown to prevent hazardous conditions such as incomplete combustion or carbon monoxide accumulation.
Built for durability in demanding mechanical rooms, the 100113143 pressure switch features a compact housing that facilitates straightforward mounting and secure hose connectivity. Technicians should verify the specific series 200 or 201 requirements before installation, as this switch is engineered to precise manufacturer tolerances for blocked inlet detection. Replacing a failed switch with this OEM unit restores factory-spec safety protocols and prevents nuisance fault codes related to airflow proving cycles.
Key Benefits- Precise Calibration: Factory-set at -2.5 in WC to ensure accurate blocked inlet detection and system protection.
- Enhanced Safety: Automatically shuts down the burner if air intake is restricted, preventing overheating and venting issues.
- Broad Compatibility: Engineered specifically for Lochinvar Power-fin and A.O. Smith Cyclone BTH/SUF models.
- OEM Reliability: Provides consistent normally closed contact performance compared to generic aftermarket alternatives.
What are the symptoms of a faulty 100113143 switch?
Common indicators include the system failing to trial for ignition or displaying specific airflow error codes. Technicians often find the switch stuck open or failing to reset after the blockage is cleared.
Can this switch be used for the blocked outlet side?
No. This is a blocked inlet switch calibrated for vacuum pressure (-2.5" WC). The exhaust side typically requires a positive pressure switch, such as part number 100187859.
Does this part include the reference tubing?
While some kits vary, the 100113143 is typically provided as the switch assembly. It is recommended to inspect all silicone hoses for cracks or blockages during replacement.
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: $61.78
-65%$61.78
$21.62Lochinvar & A.O. Smith 100113143 Switch
The Lochinvar & A.O. Smith 100113143 Blocked Inlet Switch is a critical safety component designed for high-efficiency commercial water heaters and boilers, including the Cyclone BTH and State SUF series. This genuine OEM replacement part acts as a normally closed (NC) pressure sensor calibrated to -2.5" WC. Its primary function is to monitor the integrity of the air intake system, ensuring the combustion blower receives adequate airflow for safe operation. If an obstruction occurs in the intake piping, the switch triggers an immediate system shutdown to prevent hazardous conditions such as incomplete combustion or carbon monoxide accumulation.
Built for durability in demanding mechanical rooms, the 100113143 pressure switch features a compact housing that facilitates straightforward mounting and secure hose connectivity. Technicians should verify the specific series 200 or 201 requirements before installation, as this switch is engineered to precise manufacturer tolerances for blocked inlet detection. Replacing a failed switch with this OEM unit restores factory-spec safety protocols and prevents nuisance fault codes related to airflow proving cycles.
Key Benefits- Precise Calibration: Factory-set at -2.5 in WC to ensure accurate blocked inlet detection and system protection.
- Enhanced Safety: Automatically shuts down the burner if air intake is restricted, preventing overheating and venting issues.
- Broad Compatibility: Engineered specifically for Lochinvar Power-fin and A.O. Smith Cyclone BTH/SUF models.
- OEM Reliability: Provides consistent normally closed contact performance compared to generic aftermarket alternatives.
What are the symptoms of a faulty 100113143 switch?
Common indicators include the system failing to trial for ignition or displaying specific airflow error codes. Technicians often find the switch stuck open or failing to reset after the blockage is cleared.
Can this switch be used for the blocked outlet side?
No. This is a blocked inlet switch calibrated for vacuum pressure (-2.5" WC). The exhaust side typically requires a positive pressure switch, such as part number 100187859.
Does this part include the reference tubing?
While some kits vary, the 100113143 is typically provided as the switch assembly. It is recommended to inspect all silicone hoses for cracks or blockages during replacement.
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 100113143 Blocked Inlet Switch is a critical safety component designed for high-efficiency commercial water heaters and boilers, including the Cyclone BTH and State SUF series. This genuine OEM replacement part acts as a normally closed (NC) pressure sensor calibrated to -2.5" WC. Its primary function is to monitor the integrity of the air intake system, ensuring the combustion blower receives adequate airflow for safe operation. If an obstruction occurs in the intake piping, the switch triggers an immediate system shutdown to prevent hazardous conditions such as incomplete combustion or carbon monoxide accumulation.
Built for durability in demanding mechanical rooms, the 100113143 pressure switch features a compact housing that facilitates straightforward mounting and secure hose connectivity. Technicians should verify the specific series 200 or 201 requirements before installation, as this switch is engineered to precise manufacturer tolerances for blocked inlet detection. Replacing a failed switch with this OEM unit restores factory-spec safety protocols and prevents nuisance fault codes related to airflow proving cycles.
Key Benefits- Precise Calibration: Factory-set at -2.5 in WC to ensure accurate blocked inlet detection and system protection.
- Enhanced Safety: Automatically shuts down the burner if air intake is restricted, preventing overheating and venting issues.
- Broad Compatibility: Engineered specifically for Lochinvar Power-fin and A.O. Smith Cyclone BTH/SUF models.
- OEM Reliability: Provides consistent normally closed contact performance compared to generic aftermarket alternatives.
What are the symptoms of a faulty 100113143 switch?
Common indicators include the system failing to trial for ignition or displaying specific airflow error codes. Technicians often find the switch stuck open or failing to reset after the blockage is cleared.
Can this switch be used for the blocked outlet side?
No. This is a blocked inlet switch calibrated for vacuum pressure (-2.5" WC). The exhaust side typically requires a positive pressure switch, such as part number 100187859.
Does this part include the reference tubing?
While some kits vary, the 100113143 is typically provided as the switch assembly. It is recommended to inspect all silicone hoses for cracks or blockages during replacement.
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.
