resideo Hi-Limit Aquastat

Immersion type controllers for hydronic heating systems that turn off the burner whenever the boiler water temperature rises to the set point. At the set point temperature, a diaphragm-actuated snap switch breaks the power supply to the burner primary control. High Limit Aquastat Controller has adjustable set point.

• Turns off the burner when water reaches the set temperature point
• Can be used with immersion wells or directly for faster response
• Available with second limit switch to shut off all gas to burner