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3250-Plus Fuel Smart HydroStat, Temperature Limit, LWCO & Reset Control for Oil Boilers, 120V
Brand: Hydrolevel
Part#: 48-3250
Model: HydroStat 3250-Plus
made in usa
Hydrolevel Fuel Smart 3250-Plus HydroStat is a 120V universal triple-function control for Oil boilers (incl. w/ tankless coil) with boiler reset, temperature limit & low water cut-off capabilities. It is ideally suited for replacing cold-start and triple-action aquastats.
Operates in auto reset mode, but can be switched to manual reset when used with commercial boiler installations.

  • Honeywell: L7124A, L7148A, L7224C, L7248A, L8124A, L8148A, L7124C, L7124C, L7224A, L7224U, L7248C, L8124C, L8148C

  • Universal triple-function control for oil boilers (incl. cold start and w/ tankless coil) - Temperature Limit Control (TLC), Boiler Reset & Low Water Cut-Off (LWCO)
  • Replaces common cold start and triple-action Aquastats (installs on existing well), industry standard wiring
  • Use with Hydrolevel Electro-Well for LWCO functionality
  • Can be set to either Auto (default) or Manual reset mode
  • LWCO test functionality
  • Hinged access cover
  • Dial-type settings inside
  • (6) External colored diagnostic LED's for displaying statuses
  • Dynamic display w/ call for heat indicator
  • Smart DHW priority
  • Thermal Targeting - adjusts boiler temperature based on heating demand
  • Provides automatic shutdown in warm weather w/ optional Outdoor Sensor Kit (sold separately)
  • Optional features include Thermal Pre-Purge for heat conservation, C°/F° display, multiple circulator activation options & enhanced condensing protection
  • Can be mounted to any surface for secure hold and space economy (w/ optional remote mount kit)

Technical Specifications:
  • System Type: Oil-Fired Hot Water Boilers
  • Reset: Automatic or Manual (can be selected)
  • Electro-Well Connection: 3/4" NPT or 1/2" NPT
  • Electrical Specs: 120V, 60 Hz, SPDT (Relay Type), NEMA 1 Enclosure
  • Control Contacts: 7.4 FLA, 44.4 LRA @120VAC (Burner); 5.8 FLA, 34.8 LRA @120VAC (Circulator)
  • Temperature Range: Low Limit - Off or 110°F - 200°F, High Limit - 100°F - 220°F, Differential - Auto (varies between 10°F and 20°F subtractive based on setting and boiler temperature)
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