Resideo by Honeywell L4006E1125 Manual Reset Aquastat 100-200°F

The Resideo by Honeywell L4006E1125 is a manual reset aquastat controller designed for high-limit temperature protection in hydronic heating systems. This single-pole, single-throw (SPST) control breaks on temperature rise, providing critical overheat protection for boilers and water heating equipment.

Key Features:

• Manual reset operation requires physical intervention after tripping, ensuring safety verification before system restart
• Adjustable temperature range from 100°F to 200°F for flexible application requirements
• Breaks on rise functionality automatically opens circuit when temperature exceeds setpoint
• Immersion-style temperature sensing element for direct contact with water or heating medium
• Heavy-duty construction rated for commercial and residential hydronic systems
• 6-inch capillary length provides flexible installation options

This aquastat is ideal for high-limit control applications where manual operator intervention is required after a safety shutdown. The manual reset feature prevents automatic restart of potentially unsafe conditions, making it suitable for boiler overheat protection, storage tank temperature limiting, and other critical temperature control applications in hydronic heating systems.