Description
Lochinvar & A.O. Smith 100290350 – 325°F Manual Reset Rollout Switch
The Lochinvar & A.O. Smith 100290350 is a 325°F manual reset (M/R) rollout switch engineered as a direct OEM replacement for compatible Lochinvar and A.O. Smith heating appliances. Rollout switches are a critical safety component in gas-fired furnaces, boilers, and water heaters — they detect abnormal flame rollout conditions and immediately interrupt the burner circuit to prevent heat exchanger damage, fire hazards, and carbon monoxide risks.
Key Features
- 325°F trip temperature for precise, reliable flame rollout detection
- Manual reset design requires deliberate technician intervention before the appliance can be restarted, ensuring the root cause is identified and corrected
- Direct OEM replacement part for compatible Lochinvar and A.O. Smith heating equipment
- Interrupts burner circuit upon activation to protect heat exchangers and surrounding components
- Compact, durable construction built to withstand the demanding environment of a combustion chamber
Why Rollout Switches Matter
Flame rollout occurs when combustion gases escape the burner compartment — often caused by a cracked heat exchanger, blocked flue, or restricted combustion air. The rollout switch acts as a last line of defense, tripping at its rated temperature to shut down the burner before serious damage or a safety hazard develops. A manual reset switch ensures the appliance cannot be restarted until a qualified technician has inspected and resolved the underlying issue.
Application
- Compatible with select Lochinvar and A.O. Smith gas-fired boilers, water heaters, and heating appliances
- Always verify compatibility with your specific model number before installation
- Intended for installation by qualified HVAC/R or plumbing technicians
Specifications
- Part Number: 100290350
- Brand: Lochinvar & A.O. Smith
- Type: Rollout Switch – Manual Reset (M/R)
- Trip Temperature: 325°F
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