Model 3250 Fuel Smart Hydrostat (Temperature Limit, LWCO, & Boiler Reset Control) for Oil Boilers

Universal replacement for common aquastat models. Offers cold start and tankless coil functionality. Simple to adjust with dial-type limit settings and standard industry wiring designations. Straightforward to install, requiring no outdoor sensor. Operates with virtually any boiler. Safeguards boilers from damaging low water conditions. Reduces boiler temperature to conserve fuel without compromising comfort. Easy to configure by simply dialing in the number of heating zones