Lochinvar & A.O. Smith 100173747 Low Water Cut Off with Manual Reset

Description

Lochinvar & A.O. Smith 100173747 Low Water Cut Off with Manual Reset

The Lochinvar & A.O. Smith 100173747 Low Water Cut Off with Manual Reset is a critical boiler safety control designed to protect your heating system from the hazards of low water conditions. When water levels drop below a safe operating threshold, this control automatically shuts down the burner, preventing costly dry-fire damage, overheating, and potential system failure.

Key Features

• Genuine OEM Lochinvar & A.O. Smith replacement part — engineered for precise compatibility
• Manual reset function requires deliberate operator action before restart, ensuring the root cause of low water is addressed before resuming operation
• Provides reliable burner shutdown protection against dangerous low water conditions
• Helps safeguard boiler heat exchangers and pressure vessels from dry-fire damage
• Designed for straightforward installation and long-term dependable performance
• Supports compliance with boiler safety codes and best practices

Why Manual Reset Matters

Unlike automatic-reset low water cutoffs, a manual reset control adds an important layer of safety. After a low-water shutdown event, the system cannot restart until a qualified technician physically resets the control and verifies that proper water levels have been restored. This prevents repeated cycling under unsafe conditions and reduces the risk of equipment damage or hazardous operation.

Application

• Compatible with select Lochinvar and A.O. Smith boiler models
• Ideal for residential and light commercial hydronic heating systems
• Suitable for use as a direct OEM replacement part

Ordering Information

• SKU: 100173747
• Brand: Lochinvar & A.O. Smith
• Part Type: Low Water Cut Off with Manual Reset