Resideo L4006A1967 High/Low Limit Aquastat Controller 100°-240°F

The Resideo L4006A1967 High/Low Limit Aquastat Controller is a temperature-sensitive switch for hydronic heating in HVAC systems. It controls the temperature of boiler water between 100°F and 240°F. It heats efficiently by turning on or off the burners according to preset temperature limits. This is perfect for boilers, water heaters and other hydronic HVAC equipment and improves system safety and energy efficiency. Its manual reset capability prevents overheating and the immersion-type sensing bulb enables temperature monitoring. This provides reliable performance in maintaining optimum comfort levels and preventing thermal damage to equipment in residential and light commercial HVAC systems.