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3150 HydroStat, Temperature Limit & Low Water Cut-Off for Oil Boilers, 120V
Brand: Hydrolevel
Part#: 48-3150
Model: HydroStat 3150
made in usa
Hydrolevel 3150 HydroStat is a 120V universal dual-function control for Oil boilers (incl. w/ tankless coil) with temperature limit and low water cut-off functionality, ideally suited for replacing cold-start and triple-action aquastats.

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

  • Universal dual-function oil boiler control - Temperature Limit Control (TLC) & 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
  • Specifically designed for cold start oil boilers and oil boilers w/ tankless DHW coil
  • Thermal Pre-Purge - conserves fuel by circulating latent heat in the boiler to the heating zone before firing the burner
  • Can be set to either Auto (default) or Manual reset mode
  • (4) External colored diagnostic LED's for displaying TLC & LWCO statuses
  • Can be mounted to any surface for secure hold and space economy (w/ optional remote mount kit)
  • Hinged access cover
  • Dial-type settings inside

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 for 110°F - 200°F, High Limit - 110°F - 220°F, Differential - 10°F - 30°F
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