Resideo by Honeywell L4006B1007 Reverse Acting Aquastat Controller 100-240°F

The Resideo by Honeywell L4006B1007 is a reverse acting aquastat controller designed for hydronic heating systems and boiler applications. This immersion-type temperature control provides reliable water temperature monitoring and control in the 100-240°F range.

Key Features:

• Reverse acting operation for heating system control
• Temperature range: 100-240°F (38-116°C)
• Fixed differential of 5°F for consistent operation
• Includes 1/2" immersion well for easy installation
• 1-1/2" insertion depth for accurate temperature sensing
• Durable construction for long-term reliability
• SPDT switching for versatile wiring configurations

This aquastat is ideal for controlling circulators, zone valves, or other heating system components based on water temperature. The reverse acting design closes the circuit on temperature rise, making it suitable for boiler limit controls and circulator pump activation. The included immersion well allows for installation without draining the system.