• The Fuel Smart HydroStat is standard equipment on many premier boiler lines.  It can also be used as a universal replacement control to improve the performance and fuel efficiency of older boilers.

• Three Function Control: Universal Temp Limit, Low Water Cut-Off,  Fuel-Saving Boiler Reset (Indoor Reset and Outdoor, OS-100 Outdoor Sensor Required).

• Replaces Cold Start and Triple-Action Aquastats: Install HydroStat on existing immersion well, for full temperature and boiler reset functionality, or Install HydroStat on an Electro-Well to add low water cut-off protection.

• Easy Dial Type Set-Up: Simply dial in the Temperature Limit and Economy settings.

• Dynamic Temperature Display: Clearly displays boiler temperature. Instantly changes to show setting whenever any dial is adjusted.

• LED Status Lights: Displays which functions are active and which function is not allowing the burner to fire.

• Test/Settings Button: Tests the low water cut-off and displays all control settings.

• Easy to Wire: Uses the same terminal designations as common Aquastat models.

• Smart DHW Priority: Closely monitors boiler temperature to prioritize domestic hot water calls when needed.