Hydrolevel 550SV 120V Low Water Cut-Off for Hot Water Boilers with Manual Reset

The Hydrolevel 550SV is a 120-volt low water cut-off safety control designed specifically for hot water heating systems. This essential safety device automatically shuts down the boiler when water levels drop below a safe operating point, preventing dangerous dry-firing conditions that can damage the heat exchanger and create safety hazards.

Key Features:

• Manual reset function ensures the water level issue is addressed before system restart
• Built-in test button allows for easy verification of proper operation
• Integrated indicator light provides visual confirmation of system status
• 120V operation for standard residential and light commercial applications
• Designed specifically for hot water boiler applications
• Prevents costly boiler damage from low water conditions

This control mounts directly to the boiler and provides reliable protection by continuously monitoring water levels. The manual reset feature requires operator intervention after a low water shutdown, ensuring that the underlying problem is corrected before the system can be restarted. The test button enables regular safety checks without draining the system, while the indicator light makes troubleshooting and status verification simple.