Three Function Control:
- Universal Temp Limit
Replaces cold-start Hi-Limit Aquastats*
- Low Water Cut-Off
Protects boiler from damaging dry-fires
- Fuel Saving Boiler Reset
Saves fuel by reducing the boiler temperature during non-peak demand
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 cold-start gas boilers equipped with smaller, single-function Aquastats.
- Electro-Well (needed to activate Low Water Cut-Off functionality)
- Outdoor Sensor Kit
- Remote Mounting Kit
For cold start gas boilers, universal replacement high limit control with adjustable high limit. Replaces smaller, single function limit control models.
Replaces Honeywell L4006A, L4080B
*Note: not compatible with OS-100 outdoor reset kit